use nullptr consistently (clang-tidy)

From now on we prefer nullptr instead of 0 to clarify cases where we are assigning or testing a pointer rather than a numeric zero. Also, replaced cases where 0 was passed as Qt::KeyboardModifiers with Qt::NoModifier (clang-tidy replaced them with nullptr, which waas wrong, so it was just as well to make the tests more readable rather than to revert those lines). Change-Id: I4735d35e4d9f42db5216862ce091429eadc6e65d Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
author: Shawn Rutledge <shawn.rutledge@qt.io> 2018-02-21 10:41:54 +0100
committer: Shawn Rutledge <shawn.rutledge@qt.io> 2018-02-26 07:13:18 +0000
commit: 499ec43937e926e4f2fa57a9baa455fcb3862262 (patch)
tree: 206c90d47387f8322b68f5e3db613189397e1af3 /src
parent: 53d1e9ed21d25e65a2f13606af479838f5f21fe7 (diff)
497 files changed, 2907 insertions, 2907 deletions
diff --git a/src/imports/folderlistmodel/fileinfothread.cpp b/src/imports/folderlistmodel/fileinfothread.cpp
index 4ef8d02810..5b44ed012f 100644
--- a/src/imports/folderlistmodel/fileinfothread.cpp
+++ b/src/imports/folderlistmodel/fileinfothread.cpp
@@ -47,7 +47,7 @@ FileInfoThread::FileInfoThread(QObject *parent)
     : QThread(parent),
       abort(false),
 #if QT_CONFIG(filesystemwatcher)
-      watcher(0),
+      watcher(nullptr),
 #endif
       sortFlags(QDir::Name),
       needUpdate(true),
diff --git a/src/imports/folderlistmodel/plugin.cpp b/src/imports/folderlistmodel/plugin.cpp
index e90c8724e0..5e8b41401f 100644
--- a/src/imports/folderlistmodel/plugin.cpp
+++ b/src/imports/folderlistmodel/plugin.cpp
@@ -58,7 +58,7 @@ class QmlFolderListModelPlugin : public QQmlExtensionPlugin
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 
 public:
-    QmlFolderListModelPlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent) { initResources(); }
+    QmlFolderListModelPlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) { initResources(); }
     void registerTypes(const char *uri) override
     {
         Q_ASSERT(QLatin1String(uri) == QLatin1String("Qt.labs.folderlistmodel"));
diff --git a/src/imports/folderlistmodel/qquickfolderlistmodel.cpp b/src/imports/folderlistmodel/qquickfolderlistmodel.cpp
index b3c1de6cc9..32c709830a 100644
--- a/src/imports/folderlistmodel/qquickfolderlistmodel.cpp
+++ b/src/imports/folderlistmodel/qquickfolderlistmodel.cpp
@@ -114,7 +114,7 @@ void QQuickFolderListModelPrivate::updateSorting()
 {
     Q_Q(QQuickFolderListModel);
 
-    QDir::SortFlags flags = 0;
+    QDir::SortFlags flags = nullptr;
 
     switch (sortField) {
         case QQuickFolderListModel::Unsorted:
diff --git a/src/imports/handlers/plugin.cpp b/src/imports/handlers/plugin.cpp
index d26ef2b2d4..026814541e 100644
--- a/src/imports/handlers/plugin.cpp
+++ b/src/imports/handlers/plugin.cpp
@@ -73,7 +73,7 @@ class QtQuickHandlersPlugin : public QQmlExtensionPlugin
     Q_OBJECT
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 public:
-    QtQuickHandlersPlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent) { initResources(); }
+    QtQuickHandlersPlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) { initResources(); }
     void registerTypes(const char *uri) override
     {
         Q_ASSERT(QLatin1String(uri) == QLatin1String("Qt.labs.handlers"));
diff --git a/src/imports/layouts/plugin.cpp b/src/imports/layouts/plugin.cpp
index fc3938c5d8..25d5bacc90 100644
--- a/src/imports/layouts/plugin.cpp
+++ b/src/imports/layouts/plugin.cpp
@@ -57,7 +57,7 @@ class QtQuickLayoutsPlugin : public QQmlExtensionPlugin
     Q_OBJECT
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 public:
-    QtQuickLayoutsPlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent)
+    QtQuickLayoutsPlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent)
     {
         initResources();
     }
diff --git a/src/imports/layouts/qquickgridlayoutengine.cpp b/src/imports/layouts/qquickgridlayoutengine.cpp
index fe716f0694..6004bb92ca 100644
--- a/src/imports/layouts/qquickgridlayoutengine.cpp
+++ b/src/imports/layouts/qquickgridlayoutengine.cpp
@@ -55,7 +55,7 @@ Qt::Alignment QQuickGridLayoutEngine::alignment(QQuickItem *quickItem) const
 {
     if (QGridLayoutItem *item = findLayoutItem(quickItem))
         return item->alignment();
-    return 0;
+    return nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/imports/layouts/qquicklayout.cpp b/src/imports/layouts/qquicklayout.cpp
index 3bfdea5be7..b3a5a2cfc8 100644
--- a/src/imports/layouts/qquicklayout.cpp
+++ b/src/imports/layouts/qquicklayout.cpp
@@ -114,7 +114,7 @@ QQuickLayoutAttached::QQuickLayoutAttached(QObject *parent)
       m_isTopMarginSet(false),
       m_isRightMarginSet(false),
       m_isBottomMarginSet(false),
-      m_alignment(0)
+      m_alignment(nullptr)
 {
 
 }
@@ -683,7 +683,7 @@ QQuickLayout *QQuickLayoutAttached::parentLayout() const
     } else {
         qmlWarning(parent()) << "Layout must be attached to Item elements";
     }
-    return 0;
+    return nullptr;
 }
 
 QQuickItem *QQuickLayoutAttached::item() const
diff --git a/src/imports/layouts/qquicklinearlayout.cpp b/src/imports/layouts/qquicklinearlayout.cpp
index db983e06ba..fa51ef1f2f 100644
--- a/src/imports/layouts/qquicklinearlayout.cpp
+++ b/src/imports/layouts/qquicklinearlayout.cpp
@@ -653,13 +653,13 @@ void QQuickGridLayout::insertLayoutItems()
     const auto items = childItems();
     for (QQuickItem *child : items) {
         checkAnchors(child);
-        QQuickLayoutAttached *info = 0;
+        QQuickLayoutAttached *info = nullptr;
 
         // Will skip all items with effective maximum width/height == 0
         if (shouldIgnoreItem(child, info, sizeHints))
             continue;
 
-        Qt::Alignment alignment = 0;
+        Qt::Alignment alignment = nullptr;
         int row = -1;
         int column = -1;
         int span[2] = {1,1};
@@ -828,13 +828,13 @@ void QQuickLinearLayout::insertLayoutItems()
     for (QQuickItem *child : items) {
         Q_ASSERT(child);
         checkAnchors(child);
-        QQuickLayoutAttached *info = 0;
+        QQuickLayoutAttached *info = nullptr;
 
         // Will skip all items with effective maximum width/height == 0
         if (shouldIgnoreItem(child, info, sizeHints))
             continue;
 
-        Qt::Alignment alignment = 0;
+        Qt::Alignment alignment = nullptr;
         if (info)
             alignment = info->alignment();
 
diff --git a/src/imports/layouts/qquickstacklayout.cpp b/src/imports/layouts/qquickstacklayout.cpp
index cf70856e14..0b51d79bef 100644
--- a/src/imports/layouts/qquickstacklayout.cpp
+++ b/src/imports/layouts/qquickstacklayout.cpp
@@ -213,7 +213,7 @@ QQuickItem *QQuickStackLayout::itemAt(int index) const
             return item;
         --index;
     }
-    return 0;
+    return nullptr;
 }
 
 int QQuickStackLayout::itemCount() const
@@ -320,7 +320,7 @@ void QQuickStackLayout::rearrange(const QSizeF &newSize)
 
 void QQuickStackLayout::collectItemSizeHints(QQuickItem *item, QSizeF *sizeHints)
 {
-    QQuickLayoutAttached *info = 0;
+    QQuickLayoutAttached *info = nullptr;
     QQuickLayout::effectiveSizeHints_helper(item, sizeHints, &info, true);
     if (!info)
         return;
diff --git a/src/imports/localstorage/plugin.cpp b/src/imports/localstorage/plugin.cpp
index 9a67b9a19b..5148b2f18f 100644
--- a/src/imports/localstorage/plugin.cpp
+++ b/src/imports/localstorage/plugin.cpp
@@ -220,7 +220,7 @@ QQmlSqlDatabaseData::~QQmlSqlDatabaseData()
 {
 }
 
-static ReturnedValue qmlsqldatabase_rows_index(const QQmlSqlDatabaseWrapper *r, ExecutionEngine *v4, quint32 index, bool *hasProperty = 0)
+static ReturnedValue qmlsqldatabase_rows_index(const QQmlSqlDatabaseWrapper *r, ExecutionEngine *v4, quint32 index, bool *hasProperty = nullptr)
 {
     Scope scope(v4);
 
@@ -376,10 +376,10 @@ struct TransactionRollback {
     }
 
     void clear() {
-        db = 0;
+        db = nullptr;
         if (inTransactionFlag)
             *inTransactionFlag = false;
-        inTransactionFlag = 0;
+        inTransactionFlag = nullptr;
     }
 };
 
@@ -448,7 +448,7 @@ static ReturnedValue qmlsqldatabase_transaction_shared(const FunctionObject *b,
     if (!r || r->d()->type != Heap::QQmlSqlDatabaseWrapper::Database)
         V4THROW_REFERENCE("Not a SQLDatabase object");
 
-    const FunctionObject *callback = argc ? argv[0].as<FunctionObject>() : 0;
+    const FunctionObject *callback = argc ? argv[0].as<FunctionObject>() : nullptr;
     if (!callback)
         V4THROW_SQL(SQLEXCEPTION_UNKNOWN_ERR, QQmlEngine::tr("transaction: missing callback"));
 
@@ -495,7 +495,7 @@ QQmlSqlDatabaseData::QQmlSqlDatabaseData(ExecutionEngine *v4)
         ScopedObject proto(scope, v4->newObject());
         proto->defineDefaultProperty(QStringLiteral("transaction"), qmlsqldatabase_transaction);
         proto->defineDefaultProperty(QStringLiteral("readTransaction"), qmlsqldatabase_read_transaction);
-        proto->defineAccessorProperty(QStringLiteral("version"), qmlsqldatabase_version, 0);
+        proto->defineAccessorProperty(QStringLiteral("version"), qmlsqldatabase_version, nullptr);
         proto->defineDefaultProperty(QStringLiteral("changeVersion"), qmlsqldatabase_changeVersion);
         databaseProto = proto;
     }
@@ -508,7 +508,7 @@ QQmlSqlDatabaseData::QQmlSqlDatabaseData(ExecutionEngine *v4)
     {
         ScopedObject proto(scope, v4->newObject());
         proto->defineDefaultProperty(QStringLiteral("item"), qmlsqldatabase_rows_item);
-        proto->defineAccessorProperty(QStringLiteral("length"), qmlsqldatabase_rows_length, 0);
+        proto->defineAccessorProperty(QStringLiteral("length"), qmlsqldatabase_rows_length, nullptr);
         proto->defineAccessorProperty(QStringLiteral("forwardOnly"),
                                       qmlsqldatabase_rows_forwardOnly, qmlsqldatabase_rows_setForwardOnly);
         rowsProto = proto;
@@ -690,7 +690,7 @@ class QQuickLocalStorage : public QObject
 {
     Q_OBJECT
 public:
-    QQuickLocalStorage(QObject *parent=0) : QObject(parent)
+    QQuickLocalStorage(QObject *parent=nullptr) : QObject(parent)
     {
     }
     ~QQuickLocalStorage() {
@@ -790,7 +790,7 @@ class QQmlLocalStoragePlugin : public QQmlExtensionPlugin
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 
 public:
-    QQmlLocalStoragePlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent)
+    QQmlLocalStoragePlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent)
     {
         initResources();
     }
diff --git a/src/imports/models/plugin.cpp b/src/imports/models/plugin.cpp
index 5933128713..2f8a9713d2 100644
--- a/src/imports/models/plugin.cpp
+++ b/src/imports/models/plugin.cpp
@@ -77,7 +77,7 @@ class QtQmlModelsPlugin : public QQmlExtensionPlugin
     Q_OBJECT
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 public:
-    QtQmlModelsPlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent) { initResources(); }
+    QtQmlModelsPlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) { initResources(); }
     void registerTypes(const char *uri) override
     {
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQml.Models"));
diff --git a/src/imports/particles/plugin.cpp b/src/imports/particles/plugin.cpp
index f7a3472403..a04e115976 100644
--- a/src/imports/particles/plugin.cpp
+++ b/src/imports/particles/plugin.cpp
@@ -56,7 +56,7 @@ class QtQuick2ParticlesPlugin : public QQmlExtensionPlugin
     Q_OBJECT
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 public:
-    QtQuick2ParticlesPlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent) { initResources(); }
+    QtQuick2ParticlesPlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) { initResources(); }
     void registerTypes(const char *uri) override
     {
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQuick.Particles"));
diff --git a/src/imports/qtquick2/plugin.cpp b/src/imports/qtquick2/plugin.cpp
index a5b2c8c67e..516b823856 100644
--- a/src/imports/qtquick2/plugin.cpp
+++ b/src/imports/qtquick2/plugin.cpp
@@ -56,7 +56,7 @@ class QtQuick2Plugin : public QQmlExtensionPlugin
     Q_OBJECT
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 public:
-    QtQuick2Plugin(QObject *parent = 0) : QQmlExtensionPlugin(parent) { initResources(); }
+    QtQuick2Plugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) { initResources(); }
     void registerTypes(const char *uri) override
     {
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQuick"));
diff --git a/src/imports/settings/plugin.cpp b/src/imports/settings/plugin.cpp
index 70d24c12cd..65de78a2f1 100644
--- a/src/imports/settings/plugin.cpp
+++ b/src/imports/settings/plugin.cpp
@@ -57,7 +57,7 @@ class QmlSettingsPlugin : public QQmlExtensionPlugin
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 
 public:
-    QmlSettingsPlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent) { initResources(); }
+    QmlSettingsPlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) { initResources(); }
     void registerTypes(const char *uri) override
     {
         Q_ASSERT(QByteArray(uri) == QByteArray("Qt.labs.settings"));
diff --git a/src/imports/settings/qqmlsettings.cpp b/src/imports/settings/qqmlsettings.cpp
index f6040e7a64..b00876440d 100644
--- a/src/imports/settings/qqmlsettings.cpp
+++ b/src/imports/settings/qqmlsettings.cpp
@@ -263,7 +263,7 @@ public:
 };
 
 QQmlSettingsPrivate::QQmlSettingsPrivate()
-    : q_ptr(0), timerId(0), initialized(false)
+    : q_ptr(nullptr), timerId(0), initialized(false)
 {
 }
 
diff --git a/src/imports/shapes/plugin.cpp b/src/imports/shapes/plugin.cpp
index 74731aa35f..f0e66479b6 100644
--- a/src/imports/shapes/plugin.cpp
+++ b/src/imports/shapes/plugin.cpp
@@ -58,7 +58,7 @@ class QmlShapesPlugin : public QQmlExtensionPlugin
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 
 public:
-    QmlShapesPlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent) { initResources(); }
+    QmlShapesPlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) { initResources(); }
     void registerTypes(const char *uri) override
     {
         Q_ASSERT(QByteArray(uri) == QByteArray("QtQuick.Shapes"));
diff --git a/src/imports/shapes/qquickshapegenericrenderer.cpp b/src/imports/shapes/qquickshapegenericrenderer.cpp
index 8131f02f1a..411252a906 100644
--- a/src/imports/shapes/qquickshapegenericrenderer.cpp
+++ b/src/imports/shapes/qquickshapegenericrenderer.cpp
@@ -448,14 +448,14 @@ void QQuickShapeGenericRenderer::triangulateStroke(const QPainterPath &path,
     stroker.setInvScale(inverseScale);
 
     if (pen.style() == Qt::SolidLine) {
-        stroker.process(vp, pen, clip, 0);
+        stroker.process(vp, pen, clip, nullptr);
     } else {
         QDashedStrokeProcessor dashStroker;
         dashStroker.setInvScale(inverseScale);
-        dashStroker.process(vp, pen, clip, 0);
+        dashStroker.process(vp, pen, clip, nullptr);
         QVectorPath dashStroke(dashStroker.points(), dashStroker.elementCount(),
                                dashStroker.elementTypes(), 0);
-        stroker.process(dashStroke, pen, clip, 0);
+        stroker.process(dashStroke, pen, clip, nullptr);
     }
 
     if (!stroker.vertexCount()) {
diff --git a/src/imports/shapes/qquickshapenvprrenderer.cpp b/src/imports/shapes/qquickshapenvprrenderer.cpp
index 88f367fe70..51af0d8961 100644
--- a/src/imports/shapes/qquickshapenvprrenderer.cpp
+++ b/src/imports/shapes/qquickshapenvprrenderer.cpp
@@ -986,7 +986,7 @@ void QQuickNvprBlitter::texturedQuad(GLuint textureId, const QSize &size,
 
     m_program->enableAttributeArray(0);
     m_program->enableAttributeArray(1);
-    f->glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), 0);
+    f->glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), nullptr);
     f->glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (const void *) (2 * sizeof(GLfloat)));
 
     f->glBindTexture(GL_TEXTURE_2D, textureId);
diff --git a/src/imports/shapes/qquickshapesoftwarerenderer.cpp b/src/imports/shapes/qquickshapesoftwarerenderer.cpp
index ed13afbc7e..0f5c3604b5 100644
--- a/src/imports/shapes/qquickshapesoftwarerenderer.cpp
+++ b/src/imports/shapes/qquickshapesoftwarerenderer.cpp
@@ -266,7 +266,7 @@ void QQuickShapeSoftwareRenderNode::render(const RenderState *state)
 
 QSGRenderNode::StateFlags QQuickShapeSoftwareRenderNode::changedStates() const
 {
-    return 0;
+    return nullptr;
 }
 
 QSGRenderNode::RenderingFlags QQuickShapeSoftwareRenderNode::flags() const
diff --git a/src/imports/sharedimage/plugin.cpp b/src/imports/sharedimage/plugin.cpp
index 53e95ef21a..b75e38e303 100644
--- a/src/imports/sharedimage/plugin.cpp
+++ b/src/imports/sharedimage/plugin.cpp
@@ -106,7 +106,7 @@ class QtQuickSharedImagePlugin : public QQmlExtensionPlugin
     Q_OBJECT
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 public:
-    QtQuickSharedImagePlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent) {}
+    QtQuickSharedImagePlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) {}
 
     void registerTypes(const char *uri) override
     {
diff --git a/src/imports/statemachine/plugin.cpp b/src/imports/statemachine/plugin.cpp
index 7308df8964..1357743126 100644
--- a/src/imports/statemachine/plugin.cpp
+++ b/src/imports/statemachine/plugin.cpp
@@ -62,7 +62,7 @@ class QtQmlStateMachinePlugin : public QQmlExtensionPlugin
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 
 public:
-    QtQmlStateMachinePlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent) { initResources(); }
+    QtQmlStateMachinePlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) { initResources(); }
     void registerTypes(const char *uri) override
     {
         qmlRegisterType<State>(uri, 1, 0, "State");
diff --git a/src/imports/statemachine/signaltransition.cpp b/src/imports/statemachine/signaltransition.cpp
index 3c3142cce8..63a969c0e8 100644
--- a/src/imports/statemachine/signaltransition.cpp
+++ b/src/imports/statemachine/signaltransition.cpp
@@ -163,7 +163,7 @@ void SignalTransition::connectTriggered()
 
     QObject *target = senderObject();
     QQmlData *ddata = QQmlData::get(this);
-    QQmlContextData *ctxtdata = ddata ? ddata->outerContext : 0;
+    QQmlContextData *ctxtdata = ddata ? ddata->outerContext : nullptr;
 
     Q_ASSERT(m_bindings.count() == 1);
     const QV4::CompiledData::Binding *binding = m_bindings.at(0);
@@ -178,7 +178,7 @@ void SignalTransition::connectTriggered()
 
     QQmlBoundSignalExpression *expression = ctxtdata ?
                 new QQmlBoundSignalExpression(target, signalIndex,
-                                              ctxtdata, this, m_compilationUnit->runtimeFunctions[binding->value.compiledScriptIndex]) : 0;
+                                              ctxtdata, this, m_compilationUnit->runtimeFunctions[binding->value.compiledScriptIndex]) : nullptr;
     if (expression)
         expression->setNotifyOnValueChanged(false);
     m_signalExpression = expression;
diff --git a/src/imports/statemachine/state.cpp b/src/imports/statemachine/state.cpp
index 2467039d01..af76087256 100644
--- a/src/imports/statemachine/state.cpp
+++ b/src/imports/statemachine/state.cpp
@@ -50,7 +50,7 @@ State::State(QState *parent)
 
 void State::componentComplete()
 {
-    if (this->machine() == NULL) {
+    if (this->machine() == nullptr) {
         static bool once = false;
         if (!once) {
             once = true;
diff --git a/src/imports/statemachine/statemachine.cpp b/src/imports/statemachine/statemachine.cpp
index 7c8dcbc6b6..ca6c59b6ac 100644
--- a/src/imports/statemachine/statemachine.cpp
+++ b/src/imports/statemachine/statemachine.cpp
@@ -68,7 +68,7 @@ void StateMachine::setRunning(bool running)
 
 void StateMachine::componentComplete()
 {
-    if (QStateMachine::initialState() == NULL && childMode() == QState::ExclusiveStates)
+    if (QStateMachine::initialState() == nullptr && childMode() == QState::ExclusiveStates)
          qmlWarning(this) << "No initial state set for StateMachine";
 
     // Everything is proper setup, now start the state-machine if we got
diff --git a/src/imports/testlib/main.cpp b/src/imports/testlib/main.cpp
index ab84d83ff7..41b5d1715c 100644
--- a/src/imports/testlib/main.cpp
+++ b/src/imports/testlib/main.cpp
@@ -69,7 +69,7 @@ class QuickTestUtil : public QObject
     Q_PROPERTY(bool printAvailableFunctions READ printAvailableFunctions NOTIFY printAvailableFunctionsChanged)
     Q_PROPERTY(int dragThreshold READ dragThreshold NOTIFY dragThresholdChanged)
 public:
-    QuickTestUtil(QObject *parent = 0)
+    QuickTestUtil(QObject *parent = nullptr)
         :QObject(parent)
     {}
 
@@ -150,7 +150,7 @@ class QTestQmlModule : public QQmlExtensionPlugin
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 
 public:
-    QTestQmlModule(QObject *parent = 0) : QQmlExtensionPlugin(parent) { initResources(); }
+    QTestQmlModule(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) { initResources(); }
     void registerTypes(const char *uri) override
     {
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtTest"));
diff --git a/src/imports/window/plugin.cpp b/src/imports/window/plugin.cpp
index c4ea9a1d04..4e6eedf326 100644
--- a/src/imports/window/plugin.cpp
+++ b/src/imports/window/plugin.cpp
@@ -72,7 +72,7 @@ class QtQuick2WindowPlugin : public QQmlExtensionPlugin
     Q_OBJECT
     Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
 public:
-    QtQuick2WindowPlugin(QObject *parent = 0) : QQmlExtensionPlugin(parent) { initResources(); }
+    QtQuick2WindowPlugin(QObject *parent = nullptr) : QQmlExtensionPlugin(parent) { initResources(); }
     void registerTypes(const char *uri) override
     {
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQuick.Window"));
diff --git a/src/particles/qquickcustomparticle.cpp b/src/particles/qquickcustomparticle.cpp
index e344fea1fa..0e3c656762 100644
--- a/src/particles/qquickcustomparticle.cpp
+++ b/src/particles/qquickcustomparticle.cpp
@@ -246,7 +246,7 @@ QSGNode *QQuickCustomParticle::updatePaintNode(QSGNode *oldNode, UpdatePaintNode
     QQuickOpenGLShaderEffectNode *rootNode = static_cast<QQuickOpenGLShaderEffectNode *>(oldNode);
     if (m_pleaseReset){
         delete rootNode;//Automatically deletes children
-        rootNode = 0;
+        rootNode = nullptr;
         m_nodes.clear();
         m_pleaseReset = false;
         m_dirtyProgram = true;
@@ -270,7 +270,7 @@ QQuickOpenGLShaderEffectNode *QQuickCustomParticle::prepareNextFrame(QQuickOpenG
         rootNode = buildCustomNodes();
 
     if (!rootNode)
-        return 0;
+        return nullptr;
 
     if (m_dirtyProgram) {
         const bool isES = QOpenGLContext::currentContext()->isOpenGLES();
@@ -316,23 +316,23 @@ QQuickOpenGLShaderEffectNode* QQuickCustomParticle::buildCustomNodes()
     typedef QHash<int, QQuickOpenGLShaderEffectNode*>::const_iterator NodeHashConstIt;
 
     if (!QOpenGLContext::currentContext())
-        return 0;
+        return nullptr;
 
     if (m_count * 4 > 0xffff) {
         // Index data is ushort.
         qmlInfo(this) << "CustomParticle: Too many particles - maximum 16383 per CustomParticle";
-        return 0;
+        return nullptr;
     }
 
     if (m_count <= 0) {
         qmlInfo(this) << "CustomParticle: Too few particles";
-        return 0;
+        return nullptr;
     }
 
     if (groups().isEmpty())
-        return 0;
+        return nullptr;
 
-    QQuickOpenGLShaderEffectNode *rootNode = 0;
+    QQuickOpenGLShaderEffectNode *rootNode = nullptr;
     QQuickOpenGLShaderEffectMaterial *material = new QQuickOpenGLShaderEffectMaterial;
     m_dirtyProgram = true;
 
diff --git a/src/particles/qquickimageparticle.cpp b/src/particles/qquickimageparticle.cpp
index 37bf323f42..d2fb78d72a 100644
--- a/src/particles/qquickimageparticle.cpp
+++ b/src/particles/qquickimageparticle.cpp
@@ -67,7 +67,7 @@ class ImageMaterialData
 {
     public:
     ImageMaterialData()
-        : texture(0), colorTable(0)
+        : texture(nullptr), colorTable(nullptr)
     {}
 
     ~ImageMaterialData(){
@@ -701,7 +701,7 @@ void fillUniformArrayFromImage(float* array, const QImage& img, int size)
 QQuickImageParticle::QQuickImageParticle(QQuickItem* parent)
     : QQuickParticlePainter(parent)
     , m_color_variation(0.0)
-    , m_material(0)
+    , m_material(nullptr)
     , m_alphaVariation(0.0)
     , m_alpha(1.0)
     , m_redVariation(0.0)
@@ -712,9 +712,9 @@ QQuickImageParticle::QQuickImageParticle(QQuickItem* parent)
     , m_rotationVelocity(0)
     , m_rotationVelocityVariation(0)
     , m_autoRotation(false)
-    , m_xVector(0)
-    , m_yVector(0)
-    , m_spriteEngine(0)
+    , m_xVector(nullptr)
+    , m_yVector(nullptr)
+    , m_spriteEngine(nullptr)
     , m_spritesInterpolate(true)
     , m_explicitColor(false)
     , m_explicitRotation(false)
@@ -743,7 +743,7 @@ QQmlListProperty<QQuickSprite> QQuickImageParticle::sprites()
 void QQuickImageParticle::sceneGraphInvalidated()
 {
     m_nodes.clear();
-    m_material = 0;
+    m_material = nullptr;
 }
 
 void QQuickImageParticle::setImage(const QUrl &image)
@@ -1011,7 +1011,7 @@ void QQuickImageParticle::resetColor()
     for (auto groupId : groupIds()) {
         for (QQuickParticleData* d : qAsConst(m_system->groupData[groupId]->data)) {
             if (d->colorOwner == this) {
-                d->colorOwner = 0;
+                d->colorOwner = nullptr;
             }
         }
     }
@@ -1030,7 +1030,7 @@ void QQuickImageParticle::resetRotation()
     for (auto groupId : groupIds()) {
         for (QQuickParticleData* d : qAsConst(m_system->groupData[groupId]->data)) {
             if (d->rotationOwner == this) {
-                d->rotationOwner = 0;
+                d->rotationOwner = nullptr;
             }
         }
     }
@@ -1047,7 +1047,7 @@ void QQuickImageParticle::resetDeformation()
     for (auto groupId : groupIds()) {
         for (QQuickParticleData* d : qAsConst(m_system->groupData[groupId]->data)) {
             if (d->deformationOwner == this) {
-                d->deformationOwner = 0;
+                d->deformationOwner = nullptr;
             }
         }
     }
@@ -1055,8 +1055,8 @@ void QQuickImageParticle::resetDeformation()
         delete m_xVector;
     if (m_yVector)
         delete m_yVector;
-    m_xVector = 0;
-    m_yVector = 0;
+    m_xVector = nullptr;
+    m_yVector = nullptr;
 }
 
 void QQuickImageParticle::reset()
@@ -1076,7 +1076,7 @@ void QQuickImageParticle::createEngine()
                 this, SLOT(spriteAdvance(int)), Qt::DirectConnection);
         m_explicitAnimation = true;
     } else {
-        m_spriteEngine = 0;
+        m_spriteEngine = nullptr;
         m_explicitAnimation = false;
     }
     reset();
@@ -1298,7 +1298,7 @@ void QQuickImageParticle::finishBuildParticleNodes(QSGNode** node)
 
     clearShadows();
     if (m_material)
-        m_material = 0;
+        m_material = nullptr;
 
     //Setup material
     QImage colortable;
@@ -1473,12 +1473,12 @@ static inline bool isOpenGL(QSGRenderContext *rc)
 QSGNode *QQuickImageParticle::updatePaintNode(QSGNode *node, UpdatePaintNodeData *)
 {
     if (!node && !isOpenGL(QQuickItemPrivate::get(this)->sceneGraphRenderContext()))
-        return 0;
+        return nullptr;
 
     if (m_pleaseReset){
         if (node)
             delete node;
-        node = 0;
+        node = nullptr;
 
         m_lastLevel = perfLevel;
         m_nodes.clear();
@@ -1487,7 +1487,7 @@ QSGNode *QQuickImageParticle::updatePaintNode(QSGNode *node, UpdatePaintNodeData
         m_startsIdx.clear();
         m_lastIdxStart = 0;
 
-        m_material = 0;
+        m_material = nullptr;
 
         m_pleaseReset = false;
         m_startedImageLoading = 0;//Cancel a part-way build (may still have a pending load)
@@ -1509,7 +1509,7 @@ QSGNode *QQuickImageParticle::updatePaintNode(QSGNode *node, UpdatePaintNodeData
 
 void QQuickImageParticle::prepareNextFrame(QSGNode **node)
 {
-    if (*node == 0){//TODO: Staggered loading (as emitted)
+    if (*node == nullptr){//TODO: Staggered loading (as emitted)
         buildParticleNodes(node);
         if (m_debugMode) {
             qDebug() << "QQuickImageParticle Feature level: " << perfLevel;
@@ -1522,7 +1522,7 @@ void QQuickImageParticle::prepareNextFrame(QSGNode **node)
             }
             qDebug() << "Total count: " << count;
         }
-        if (*node == 0)
+        if (*node == nullptr)
             return;
     }
     qint64 timeStamp = m_system->systemSync(this);
diff --git a/src/particles/qquickitemparticle.cpp b/src/particles/qquickitemparticle.cpp
index 50b66a4d15..412390dffc 100644
--- a/src/particles/qquickitemparticle.cpp
+++ b/src/particles/qquickitemparticle.cpp
@@ -118,7 +118,7 @@ QT_BEGIN_NAMESPACE
 */
 
 QQuickItemParticle::QQuickItemParticle(QQuickItem *parent) :
-    QQuickParticlePainter(parent), m_fade(true), m_lastT(0), m_activeCount(0), m_delegate(0)
+    QQuickParticlePainter(parent), m_fade(true), m_lastT(0), m_activeCount(0), m_delegate(nullptr)
 {
     setFlag(QQuickItem::ItemHasContents);
     clock = new Clock(this);
@@ -195,7 +195,7 @@ void QQuickItemParticle::tick(int time)
         //remove old item from the particle that is dying to make room for this one
         if (d->delegate) {
             m_deletables << d->delegate;
-            d->delegate = 0;
+            d->delegate = nullptr;
         }
         if (!m_pendingItems.isEmpty()){
             d->delegate = m_pendingItems.front();
@@ -289,7 +289,7 @@ void QQuickItemParticle::prepareNextFrame()
             }
             if (t >= 1.0f){//Usually happens from load
                 m_deletables << item;
-                data->delegate = 0;
+                data->delegate = nullptr;
             }else{//Fade
                 data->delegate->setVisible(true);
                 if (m_fade){
diff --git a/src/particles/qquickparticleaffector.cpp b/src/particles/qquickparticleaffector.cpp
index 30716ecb80..76089c1abd 100644
--- a/src/particles/qquickparticleaffector.cpp
+++ b/src/particles/qquickparticleaffector.cpp
@@ -131,7 +131,7 @@ QT_BEGIN_NAMESPACE
 */
 QQuickParticleAffector::QQuickParticleAffector(QQuickItem *parent) :
     QQuickItem(parent), m_needsReset(false), m_ignoresTime(false), m_onceOff(false), m_enabled(true)
-    , m_system(0), m_updateIntSet(false), m_shape(new QQuickParticleExtruder(this))
+    , m_system(nullptr), m_updateIntSet(false), m_shape(new QQuickParticleExtruder(this))
 {
 }
 
diff --git a/src/particles/qquickparticleemitter.cpp b/src/particles/qquickparticleemitter.cpp
index d17c8fc2ba..78409d3a44 100644
--- a/src/particles/qquickparticleemitter.cpp
+++ b/src/particles/qquickparticleemitter.cpp
@@ -222,9 +222,9 @@ QQuickParticleEmitter::QQuickParticleEmitter(QQuickItem *parent) :
   , m_particleDuration(1000)
   , m_particleDurationVariation(0)
   , m_enabled(true)
-  , m_system(0)
-  , m_extruder(0)
-  , m_defaultExtruder(0)
+  , m_system(nullptr)
+  , m_extruder(nullptr)
+  , m_defaultExtruder(nullptr)
   , m_velocity(&m_nullVector)
   , m_acceleration(&m_nullVector)
   , m_particleSize(16)
@@ -349,7 +349,7 @@ void QQuickParticleEmitter::reset()
 
 void QQuickParticleEmitter::emitWindow(int timeStamp)
 {
-    if (m_system == 0)
+    if (m_system == nullptr)
         return;
     if ((!m_enabled || m_particlesPerSecond <= 0)&& !m_pulseLeft && m_burstQueue.isEmpty()){
         m_reset_last = true;
diff --git a/src/particles/qquickparticlegroup.cpp b/src/particles/qquickparticlegroup.cpp
index 2ee2a1d0a3..a42d2bcb13 100644
--- a/src/particles/qquickparticlegroup.cpp
+++ b/src/particles/qquickparticlegroup.cpp
@@ -91,7 +91,7 @@
 
 QQuickParticleGroup::QQuickParticleGroup(QObject* parent)
     : QQuickStochasticState(parent)
-    , m_system(0)
+    , m_system(nullptr)
 {
 
 }
@@ -107,9 +107,9 @@ QQmlListProperty<QObject> QQuickParticleGroup::particleChildren()
 {
     QQuickParticleSystem* system = qobject_cast<QQuickParticleSystem*>(parent());
     if (system)
-        return QQmlListProperty<QObject>(this, 0, &QQuickParticleSystem::statePropertyRedirect, 0, 0, 0);
+        return QQmlListProperty<QObject>(this, nullptr, &QQuickParticleSystem::statePropertyRedirect, nullptr, nullptr, nullptr);
     else
-        return QQmlListProperty<QObject>(this, 0, &delayedRedirect, 0, 0, 0);
+        return QQmlListProperty<QObject>(this, nullptr, &delayedRedirect, nullptr, nullptr, nullptr);
 }
 
 void QQuickParticleGroup::setSystem(QQuickParticleSystem* arg)
diff --git a/src/particles/qquickparticlepainter.cpp b/src/particles/qquickparticlepainter.cpp
index 70fc2d59e3..13591be97a 100644
--- a/src/particles/qquickparticlepainter.cpp
+++ b/src/particles/qquickparticlepainter.cpp
@@ -66,10 +66,10 @@ QT_BEGIN_NAMESPACE
 */
 QQuickParticlePainter::QQuickParticlePainter(QQuickItem *parent)
     : QQuickItem(parent)
-    , m_system(0)
+    , m_system(nullptr)
     , m_count(0)
     , m_pleaseReset(true)
-    , m_window(0)
+    , m_window(nullptr)
     , m_groupIdsNeedRecalculation(false)
 {
 }
diff --git a/src/particles/qquickparticlesystem.cpp b/src/particles/qquickparticlesystem.cpp
index 5e613c484a..612675fec7 100644
--- a/src/particles/qquickparticlesystem.cpp
+++ b/src/particles/qquickparticlesystem.cpp
@@ -378,7 +378,7 @@ QQuickParticleData* QQuickParticleGroupData::newDatum(bool respectsLimits)
         return data[idx];
     }
     if (respectsLimits)
-        return 0;
+        return nullptr;
 
     int oldSize = m_size;
     setSize(oldSize + 10);//###+1,10%,+10? Choose something non-arbitrarily
@@ -418,11 +418,11 @@ QQuickParticleData::QQuickParticleData()
     : index(0)
     , systemIndex(-1)
     , groupId(0)
-    , colorOwner(0)
-    , rotationOwner(0)
-    , deformationOwner(0)
-    , animationOwner(0)
-    , v8Datum(0)
+    , colorOwner(nullptr)
+    , rotationOwner(nullptr)
+    , deformationOwner(nullptr)
+    , animationOwner(nullptr)
+    , v8Datum(nullptr)
 {
     x = 0;
     y = 0;
@@ -455,7 +455,7 @@ QQuickParticleData::QQuickParticleData()
     color.b = 255;
     color.a = 255;
     r = 0;
-    delegate = 0;
+    delegate = nullptr;
     modelIndex = -1;
 }
 
@@ -477,7 +477,7 @@ QQuickParticleData &QQuickParticleData::operator=(const QQuickParticleData &othe
     index = other.index;
     systemIndex = other.systemIndex;
     // Lazily initialized
-    v8Datum = 0;
+    v8Datum = nullptr;
 
     return *this;
 }
@@ -564,9 +564,9 @@ void QQuickParticleData::extendLife(float time, QQuickParticleSystem* particleSy
 
 QQuickParticleSystem::QQuickParticleSystem(QQuickItem *parent) :
     QQuickItem(parent),
-    stateEngine(0),
+    stateEngine(nullptr),
     nextFreeGroupId(0),
-    m_animation(0),
+    m_animation(nullptr),
     m_running(true),
     initialized(0),
     particleCount(0),
@@ -768,9 +768,9 @@ void QQuickParticleSystem::reset()
     timeInt = 0;
     //Clear guarded pointers which have been deleted
     int cleared = 0;
-    cleared += m_emitters.removeAll(0);
-    cleared += m_painters.removeAll(0);
-    cleared += m_affectors.removeAll(0);
+    cleared += m_emitters.removeAll(nullptr);
+    cleared += m_painters.removeAll(nullptr);
+    cleared += m_affectors.removeAll(nullptr);
 
     bySysIdx.resize(0);
     initGroups();//Also clears all logical particles
@@ -945,7 +945,7 @@ void QQuickParticleSystem::createEngine()
     } else {
         if (stateEngine)
             delete stateEngine;
-        stateEngine = 0;
+        stateEngine = nullptr;
     }
 
 }
@@ -993,7 +993,7 @@ QQuickParticleData* QQuickParticleSystem::newDatum(int groupId, bool respectLimi
 
     QQuickParticleData* ret = groupData[groupId]->newDatum(respectLimits);
     if (!ret) {
-        return 0;
+        return nullptr;
     }
     if (sysIndex == -1) {
         if (ret->systemIndex == -1)
@@ -1056,9 +1056,9 @@ void QQuickParticleSystem::updateCurrentTime( int currentTime )
     dt = time - dt;
     needsReset.clear();
 
-    m_emitters.removeAll(0);
-    m_painters.removeAll(0);
-    m_affectors.removeAll(0);
+    m_emitters.removeAll(nullptr);
+    m_painters.removeAll(nullptr);
+    m_affectors.removeAll(nullptr);
 
     bool oldClear = m_empty;
     m_empty = true;
diff --git a/src/particles/qquickparticlesystem_p.h b/src/particles/qquickparticlesystem_p.h
index 92dca40419..6671cec4f8 100644
--- a/src/particles/qquickparticlesystem_p.h
+++ b/src/particles/qquickparticlesystem_p.h
@@ -353,7 +353,7 @@ class Q_QUICKPARTICLES_PRIVATE_EXPORT QQuickParticleSystem : public QQuickItem
     Q_PROPERTY(bool empty READ isEmpty NOTIFY emptyChanged)
 
 public:
-    explicit QQuickParticleSystem(QQuickItem *parent = 0);
+    explicit QQuickParticleSystem(QQuickItem *parent = nullptr);
     ~QQuickParticleSystem();
 
     bool isRunning() const
diff --git a/src/particles/qquickspritegoal.cpp b/src/particles/qquickspritegoal.cpp
index 2e420a2840..75d6f8bdf6 100644
--- a/src/particles/qquickspritegoal.cpp
+++ b/src/particles/qquickspritegoal.cpp
@@ -82,7 +82,7 @@ QT_BEGIN_NAMESPACE
 QQuickSpriteGoalAffector::QQuickSpriteGoalAffector(QQuickItem *parent) :
     QQuickParticleAffector(parent),
     m_goalIdx(-1),
-    m_lastEngine(0),
+    m_lastEngine(nullptr),
     m_jump(false),
     m_systemStates(false),
     m_notUsingEngine(false)
@@ -121,7 +121,7 @@ void QQuickSpriteGoalAffector::setGoalState(const QString &arg)
 bool QQuickSpriteGoalAffector::affectParticle(QQuickParticleData *d, qreal dt)
 {
     Q_UNUSED(dt);
-    QQuickStochasticEngine *engine = 0;
+    QQuickStochasticEngine *engine = nullptr;
     if (!m_systemStates){
         //TODO: Affect all engines
         foreach (QQuickParticlePainter *p, m_system->groupData[d->groupId]->painters)
diff --git a/src/particles/qquicktargetdirection.cpp b/src/particles/qquicktargetdirection.cpp
index a113b7c04a..5d84f9dc2b 100644
--- a/src/particles/qquicktargetdirection.cpp
+++ b/src/particles/qquicktargetdirection.cpp
@@ -91,7 +91,7 @@ QQuickTargetDirection::QQuickTargetDirection(QObject *parent) :
   , m_proportionalMagnitude(false)
   , m_magnitude(0)
   , m_magnitudeVariation(0)
-  , m_targetItem(0)
+  , m_targetItem(nullptr)
 {
 }
 
diff --git a/src/particles/qquicktrailemitter.cpp b/src/particles/qquicktrailemitter.cpp
index 16b87f0e51..fde5eab617 100644
--- a/src/particles/qquicktrailemitter.cpp
+++ b/src/particles/qquicktrailemitter.cpp
@@ -62,7 +62,7 @@ QQuickTrailEmitter::QQuickTrailEmitter(QQuickItem *parent) :
   , m_emitterXVariation(0)
   , m_emitterYVariation(0)
   , m_followCount(0)
-  , m_emissionExtruder(0)
+  , m_emissionExtruder(nullptr)
   , m_defaultEmissionExtruder(new QQuickParticleExtruder(this))
 {
     //TODO: If followed increased their size
@@ -150,7 +150,7 @@ void QQuickTrailEmitter::reset()
 
 void QQuickTrailEmitter::emitWindow(int timeStamp)
 {
-    if (m_system == 0)
+    if (m_system == nullptr)
         return;
     if (!m_enabled && !m_pulseLeft && m_burstQueue.isEmpty())
         return;
diff --git a/src/particles/qquickturbulence.cpp b/src/particles/qquickturbulence.cpp
index f916635358..dc72d884bc 100644
--- a/src/particles/qquickturbulence.cpp
+++ b/src/particles/qquickturbulence.cpp
@@ -81,7 +81,7 @@ QT_BEGIN_NAMESPACE
 
 QQuickTurbulenceAffector::QQuickTurbulenceAffector(QQuickItem *parent) :
     QQuickParticleAffector(parent),
-    m_strength(10), m_lastT(0), m_gridSize(0), m_field(0), m_vectorField(0), m_inited(false)
+    m_strength(10), m_lastT(0), m_gridSize(0), m_field(nullptr), m_vectorField(nullptr), m_inited(false)
 {
 }
 
diff --git a/src/plugins/qmltooling/packetprotocol/qpacketprotocol.cpp b/src/plugins/qmltooling/packetprotocol/qpacketprotocol.cpp
index e541810330..5460d617dd 100644
--- a/src/plugins/qmltooling/packetprotocol/qpacketprotocol.cpp
+++ b/src/plugins/qmltooling/packetprotocol/qpacketprotocol.cpp
@@ -247,7 +247,7 @@ void QPacketProtocol::readyToRead()
                 disconnect(d->dev, &QIODevice::readyRead, this, &QPacketProtocol::readyToRead);
                 disconnect(d->dev, &QIODevice::aboutToClose, this, &QPacketProtocol::aboutToClose);
                 disconnect(d->dev, &QIODevice::bytesWritten, this, &QPacketProtocol::bytesWritten);
-                d->dev = 0;
+                d->dev = nullptr;
                 emit invalidPacket();
                 return;
             }
diff --git a/src/plugins/qmltooling/packetprotocol/qpacketprotocol_p.h b/src/plugins/qmltooling/packetprotocol/qpacketprotocol_p.h
index 7fd722f17f..35edb568aa 100644
--- a/src/plugins/qmltooling/packetprotocol/qpacketprotocol_p.h
+++ b/src/plugins/qmltooling/packetprotocol/qpacketprotocol_p.h
@@ -63,7 +63,7 @@ class QPacketProtocol : public QObject
     Q_OBJECT
     Q_DECLARE_PRIVATE(QPacketProtocol)
 public:
-    explicit QPacketProtocol(QIODevice *dev, QObject *parent = 0);
+    explicit QPacketProtocol(QIODevice *dev, QObject *parent = nullptr);
 
     void send(const QByteArray &data);
     qint64 packetsAvailable() const;
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qqmldebuggerservicefactory.cpp b/src/plugins/qmltooling/qmldbg_debugger/qqmldebuggerservicefactory.cpp
index 9315adf4ce..3851cdc71f 100644
--- a/src/plugins/qmltooling/qmldbg_debugger/qqmldebuggerservicefactory.cpp
+++ b/src/plugins/qmltooling/qmldbg_debugger/qqmldebuggerservicefactory.cpp
@@ -52,7 +52,7 @@ QQmlDebugService *QQmlDebuggerServiceFactory::create(const QString &key)
     if (key == QV4DebugServiceImpl::s_key)
         return new QV4DebugServiceImpl(this);
 
-    return 0;
+    return nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qqmlenginedebugservice.cpp b/src/plugins/qmltooling/qmldbg_debugger/qqmlenginedebugservice.cpp
index 80da09d718..288ad243ce 100644
--- a/src/plugins/qmltooling/qmldbg_debugger/qqmlenginedebugservice.cpp
+++ b/src/plugins/qmltooling/qmldbg_debugger/qqmlenginedebugservice.cpp
@@ -61,7 +61,7 @@
 QT_BEGIN_NAMESPACE
 
 QQmlEngineDebugServiceImpl::QQmlEngineDebugServiceImpl(QObject *parent) :
-    QQmlEngineDebugService(2, parent), m_watch(new QQmlWatcher(this)), m_statesDelegate(0)
+    QQmlEngineDebugService(2, parent), m_watch(new QQmlWatcher(this)), m_statesDelegate(nullptr)
 {
     connect(m_watch, &QQmlWatcher::propertyChanged,
             this, &QQmlEngineDebugServiceImpl::propertyChanged);
@@ -726,7 +726,7 @@ bool QQmlEngineDebugServiceImpl::resetBinding(int objectId, const QString &prope
 
         if (hasValidSignal(object, propertyName)) {
             QQmlProperty property(object, propertyName, context);
-            QQmlPropertyPrivate::setSignalExpression(property, 0);
+            QQmlPropertyPrivate::setSignalExpression(property, nullptr);
             return true;
         }
 
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qqmlwatcher.cpp b/src/plugins/qmltooling/qmldbg_debugger/qqmlwatcher.cpp
index cbbbb2ceb7..86571e6cbe 100644
--- a/src/plugins/qmltooling/qmldbg_debugger/qqmlwatcher.cpp
+++ b/src/plugins/qmltooling/qmldbg_debugger/qqmlwatcher.cpp
@@ -61,12 +61,12 @@ public:
                   QObject *object,
                   int debugId,
                   const QMetaProperty &prop,
-                  QQmlWatcher *parent = 0);
+                  QQmlWatcher *parent = nullptr);
 
     QQmlWatchProxy(int id,
                   QQmlExpression *exp,
                   int debugId,
-                  QQmlWatcher *parent = 0);
+                  QQmlWatcher *parent = nullptr);
 
 public slots:
     void notifyValueChanged(); // Needs to be a slot because of QQmlPropertyPrivate::connect()
@@ -86,7 +86,7 @@ QQmlWatchProxy::QQmlWatchProxy(int id,
                              QQmlExpression *exp,
                              int debugId,
                              QQmlWatcher *parent)
-: QObject(parent), m_id(id), m_watch(parent), m_object(0), m_debugId(debugId), m_expr(exp)
+: QObject(parent), m_id(id), m_watch(parent), m_object(nullptr), m_debugId(debugId), m_expr(exp)
 {
     QObject::connect(m_expr, &QQmlExpression::valueChanged,
                      this, &QQmlWatchProxy::notifyValueChanged);
@@ -97,7 +97,7 @@ QQmlWatchProxy::QQmlWatchProxy(int id,
                              int debugId,
                              const QMetaProperty &prop,
                              QQmlWatcher *parent)
-: QObject(parent), m_id(id), m_watch(parent), m_object(object), m_debugId(debugId), m_property(prop), m_expr(0)
+: QObject(parent), m_id(id), m_watch(parent), m_object(object), m_debugId(debugId), m_property(prop), m_expr(nullptr)
 {
     static int refreshIdx = -1;
     if(refreshIdx == -1)
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qv4datacollector.cpp b/src/plugins/qmltooling/qmldbg_debugger/qv4datacollector.cpp
index a538956e8e..c86f3d1803 100644
--- a/src/plugins/qmltooling/qmldbg_debugger/qv4datacollector.cpp
+++ b/src/plugins/qmltooling/qmldbg_debugger/qv4datacollector.cpp
@@ -69,19 +69,19 @@ QV4::Heap::ExecutionContext *QV4DataCollector::findContext(int frame)
 {
     QV4::CppStackFrame *f = findFrame(frame);
 
-    return f ? f->context()->d() : 0;
+    return f ? f->context()->d() : nullptr;
 }
 
 QV4::Heap::CallContext *QV4DataCollector::findScope(QV4::Heap::ExecutionContext *ctx, int scope)
 {
     if (!ctx)
-        return 0;
+        return nullptr;
 
     for (; scope > 0 && ctx; --scope)
         ctx = ctx->outer;
 
     return (ctx && ctx->type == QV4::Heap::ExecutionContext::Type_CallContext) ?
-                static_cast<QV4::Heap::CallContext *>(ctx) : 0;
+                static_cast<QV4::Heap::CallContext *>(ctx) : nullptr;
 }
 
 QVector<QV4::Heap::ExecutionContext::ContextType> QV4DataCollector::getScopeTypes(int frame)
@@ -139,16 +139,16 @@ const QV4::Object *collectProperty(const QV4::ScopedValue &value, QV4::Execution
     switch (value->type()) {
     case QV4::Value::Empty_Type:
         Q_ASSERT(!"empty Value encountered");
-        return 0;
+        return nullptr;
     case QV4::Value::Undefined_Type:
         dict.insert(valueKey, QJsonValue::Undefined);
-        return 0;
+        return nullptr;
     case QV4::Value::Null_Type:
         dict.insert(valueKey, QJsonValue::Null);
-        return 0;
+        return nullptr;
     case QV4::Value::Boolean_Type:
         dict.insert(valueKey, value->booleanValue());
-        return 0;
+        return nullptr;
     case QV4::Value::Managed_Type:
         if (const QV4::String *s = value->as<QV4::String>()) {
             dict.insert(valueKey, s->toQString());
@@ -176,10 +176,10 @@ const QV4::Object *collectProperty(const QV4::ScopedValue &value, QV4::Execution
         } else {
             Q_UNREACHABLE();
         }
-        return 0;
+        return nullptr;
     case QV4::Value::Integer_Type:
         dict.insert(valueKey, value->integerValue());
-        return 0;
+        return nullptr;
     default: {// double
         const double val = value->doubleValue();
         if (qIsFinite(val))
@@ -190,7 +190,7 @@ const QV4::Object *collectProperty(const QV4::ScopedValue &value, QV4::Execution
             dict.insert(valueKey, QStringLiteral("-Infinity"));
         else
             dict.insert(valueKey, QStringLiteral("Infinity"));
-        return 0;
+        return nullptr;
     }
     }
 }
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qv4debugger.cpp b/src/plugins/qmltooling/qmldbg_debugger/qv4debugger.cpp
index 45817ea38e..a1ed211a55 100644
--- a/src/plugins/qmltooling/qmldbg_debugger/qv4debugger.cpp
+++ b/src/plugins/qmltooling/qmldbg_debugger/qv4debugger.cpp
@@ -71,8 +71,8 @@ QV4Debugger::QV4Debugger(QV4::ExecutionEngine *engine)
     , m_haveBreakPoints(false)
     , m_breakOnThrow(false)
     , m_returnedValue(engine, QV4::Primitive::undefinedValue())
-    , m_gatherSources(0)
-    , m_runningJob(0)
+    , m_gatherSources(nullptr)
+    , m_runningJob(nullptr)
     , m_collector(engine)
 {
     static int debuggerId = qRegisterMetaType<QV4Debugger*>();
@@ -182,7 +182,7 @@ void QV4Debugger::maybeBreakAtInstruction()
     if (m_gatherSources) {
         m_gatherSources->run();
         delete m_gatherSources;
-        m_gatherSources = 0;
+        m_gatherSources = nullptr;
     }
 
     switch (m_stepping) {
@@ -295,11 +295,11 @@ bool QV4Debugger::reallyHitTheBreakPoint(const QString &filename, int linenr)
     if (condition.isEmpty())
         return true;
 
-    Q_ASSERT(m_runningJob == 0);
+    Q_ASSERT(m_runningJob == nullptr);
     EvalJob evilJob(m_engine, condition);
     m_runningJob = &evilJob;
     m_runningJob->run();
-    m_runningJob = 0;
+    m_runningJob = nullptr;
 
     return evilJob.resultAsBoolean();
 }
@@ -313,7 +313,7 @@ void QV4Debugger::runInEngine(QV4DebugJob *job)
 void QV4Debugger::runInEngine_havingLock(QV4DebugJob *job)
 {
     Q_ASSERT(job);
-    Q_ASSERT(m_runningJob == 0);
+    Q_ASSERT(m_runningJob == nullptr);
 
     m_runningJob = job;
     if (state() == Paused)
@@ -321,7 +321,7 @@ void QV4Debugger::runInEngine_havingLock(QV4DebugJob *job)
     else
         emit scheduleJob();
     m_jobIsRunning.wait(&m_lock);
-    m_runningJob = 0;
+    m_runningJob = nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qv4debuggeragent.cpp b/src/plugins/qmltooling/qmldbg_debugger/qv4debuggeragent.cpp
index 87e75c49b5..71645579c5 100644
--- a/src/plugins/qmltooling/qmldbg_debugger/qv4debuggeragent.cpp
+++ b/src/plugins/qmltooling/qmldbg_debugger/qv4debuggeragent.cpp
@@ -56,13 +56,13 @@ QV4Debugger *QV4DebuggerAgent::pausedDebugger() const
         if (debugger->state() == QV4Debugger::Paused)
             return debugger;
     }
-    return 0;
+    return nullptr;
 }
 
 bool QV4DebuggerAgent::isRunning() const
 {
     // "running" means none of the engines are paused.
-    return pausedDebugger() == 0;
+    return pausedDebugger() == nullptr;
 }
 
 void QV4DebuggerAgent::debuggerPaused(QV4Debugger *debugger, QV4Debugger::PauseReason reason)
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qv4debugjob.cpp b/src/plugins/qmltooling/qmldbg_debugger/qv4debugjob.cpp
index 6f254c9e28..5b049ab521 100644
--- a/src/plugins/qmltooling/qmldbg_debugger/qv4debugjob.cpp
+++ b/src/plugins/qmltooling/qmldbg_debugger/qv4debugjob.cpp
@@ -208,7 +208,7 @@ void ValueLookupJob::run()
     QScopedPointer<QObject> scopeObject;
     QV4::ExecutionEngine *engine = collector->engine();
     QV4::Scope scope(engine);
-    QV4::Heap::ExecutionContext *qmlContext = 0;
+    QV4::Heap::ExecutionContext *qmlContext = nullptr;
     if (engine->qmlEngine() && !engine->qmlContext()) {
         scopeObject.reset(new QObject);
         qmlContext = QV4::QmlContext::create(engine->currentContext(),
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qv4debugservice.cpp b/src/plugins/qmltooling/qmldbg_debugger/qv4debugservice.cpp
index 99a57be5d6..61209e08cb 100644
--- a/src/plugins/qmltooling/qmldbg_debugger/qv4debugservice.cpp
+++ b/src/plugins/qmltooling/qmldbg_debugger/qv4debugservice.cpp
@@ -98,7 +98,7 @@ public:
             debugService->send(response);
         }
 
-        debugService = 0;
+        debugService = nullptr;
         seq = QJsonValue();
         req = QJsonObject();
         response = QJsonObject();
diff --git a/src/plugins/qmltooling/qmldbg_inspector/highlight.cpp b/src/plugins/qmltooling/qmldbg_inspector/highlight.cpp
index c7307db240..0d6cd45354 100644
--- a/src/plugins/qmltooling/qmldbg_inspector/highlight.cpp
+++ b/src/plugins/qmltooling/qmldbg_inspector/highlight.cpp
@@ -100,7 +100,7 @@ void Highlight::adjust()
         return;
 
     bool success = false;
-    m_transform = m_item->itemTransform(0, &success);
+    m_transform = m_item->itemTransform(nullptr, &success);
     if (!success)
         m_transform = QTransform();
 
diff --git a/src/plugins/qmltooling/qmldbg_inspector/inspecttool.cpp b/src/plugins/qmltooling/qmldbg_inspector/inspecttool.cpp
index bc146b176c..1781670cf3 100644
--- a/src/plugins/qmltooling/qmldbg_inspector/inspecttool.cpp
+++ b/src/plugins/qmltooling/qmldbg_inspector/inspecttool.cpp
@@ -62,8 +62,8 @@ InspectTool::InspectTool(QQuickWindowInspector *inspector, QQuickWindow *view) :
     m_contentItem(view->contentItem()),
     m_touchTimestamp(0),
     m_hoverHighlight(new HoverHighlight(inspector->overlay())),
-    m_lastItem(0),
-    m_lastClickedItem(0)
+    m_lastItem(nullptr),
+    m_lastClickedItem(nullptr)
 {
     //Timer to display selected item's name
     m_nameDisplayTimer.setSingleShot(true);
diff --git a/src/plugins/qmltooling/qmldbg_inspector/qqmlinspectorservice.cpp b/src/plugins/qmltooling/qmldbg_inspector/qqmlinspectorservice.cpp
index d0d8d62615..fa27adedfd 100644
--- a/src/plugins/qmltooling/qmldbg_inspector/qqmlinspectorservice.cpp
+++ b/src/plugins/qmltooling/qmldbg_inspector/qqmlinspectorservice.cpp
@@ -49,7 +49,7 @@ class QQmlInspectorServiceImpl : public QQmlInspectorService
 {
     Q_OBJECT
 public:
-    QQmlInspectorServiceImpl(QObject *parent = 0);
+    QQmlInspectorServiceImpl(QObject *parent = nullptr);
 
     void addWindow(QQuickWindow *window) override;
     void setParentWindow(QQuickWindow *window, QWindow *parent) override;
@@ -72,7 +72,7 @@ private:
 };
 
 QQmlInspectorServiceImpl::QQmlInspectorServiceImpl(QObject *parent):
-    QQmlInspectorService(1, parent), m_globalInspector(0)
+    QQmlInspectorService(1, parent), m_globalInspector(nullptr)
 {
     connect(this, &QQmlInspectorServiceImpl::scheduleMessage,
             this, &QQmlInspectorServiceImpl::messageFromClient, Qt::QueuedConnection);
@@ -95,7 +95,7 @@ QmlJSDebugger::GlobalInspector *QQmlInspectorServiceImpl::checkInspector()
         }
     } else if (m_globalInspector) {
         delete m_globalInspector;
-        m_globalInspector = 0;
+        m_globalInspector = nullptr;
     }
     return m_globalInspector;
 }
@@ -138,7 +138,7 @@ void QQmlInspectorServiceImpl::messageFromClient(const QByteArray &message)
 
 QQmlDebugService *QQmlInspectorServiceFactory::create(const QString &key)
 {
-    return key == QQmlInspectorServiceImpl::s_key ? new QQmlInspectorServiceImpl(this) : 0;
+    return key == QQmlInspectorServiceImpl::s_key ? new QQmlInspectorServiceImpl(this) : nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/plugins/qmltooling/qmldbg_inspector/qquickwindowinspector.cpp b/src/plugins/qmltooling/qmldbg_inspector/qquickwindowinspector.cpp
index d3bd1ac956..09eb6bfc28 100644
--- a/src/plugins/qmltooling/qmldbg_inspector/qquickwindowinspector.cpp
+++ b/src/plugins/qmltooling/qmldbg_inspector/qquickwindowinspector.cpp
@@ -54,14 +54,14 @@ static QQuickItem *itemAt(QQuickItem *item, const QPointF &pos,
                           QQuickItem *overlay)
 {
     if (item == overlay)
-        return 0;
+        return nullptr;
 
     if (!item->isVisible() || item->opacity() == 0.0)
-        return 0;
+        return nullptr;
 
     if (item->flags() & QQuickItem::ItemClipsChildrenToShape) {
         if (!QRectF(0, 0, item->width(), item->height()).contains(pos))
-            return 0;
+            return nullptr;
     }
 
     QList<QQuickItem *> children = QQuickItemPrivate::get(item)->paintOrderChildItems();
@@ -73,10 +73,10 @@ static QQuickItem *itemAt(QQuickItem *item, const QPointF &pos,
     }
 
     if (!(item->flags() & QQuickItem::ItemHasContents))
-        return 0;
+        return nullptr;
 
     if (!QRectF(0, 0, item->width(), item->height()).contains(pos))
-        return 0;
+        return nullptr;
 
     return item;
 }
@@ -111,8 +111,8 @@ QQuickWindowInspector::QQuickWindowInspector(QQuickWindow *quickWindow, QObject
     QObject(parent),
     m_overlay(new QQuickItem),
     m_window(quickWindow),
-    m_parentWindow(0),
-    m_tool(0)
+    m_parentWindow(nullptr),
+    m_tool(nullptr)
 {
     setParentWindow(quickWindow);
 
@@ -199,7 +199,7 @@ void QQuickWindowInspector::setShowAppOnTop(bool appOnTop)
 
 bool QQuickWindowInspector::isEnabled() const
 {
-    return m_tool != 0;
+    return m_tool != nullptr;
 }
 
 void QQuickWindowInspector::setEnabled(bool enabled)
@@ -208,7 +208,7 @@ void QQuickWindowInspector::setEnabled(bool enabled)
         m_tool = new InspectTool(this, m_window);
     } else {
         delete m_tool;
-        m_tool = 0;
+        m_tool = nullptr;
     }
 }
 
diff --git a/src/plugins/qmltooling/qmldbg_local/qlocalclientconnection.cpp b/src/plugins/qmltooling/qmldbg_local/qlocalclientconnection.cpp
index e60644518f..28cfabc44b 100644
--- a/src/plugins/qmltooling/qmldbg_local/qlocalclientconnection.cpp
+++ b/src/plugins/qmltooling/qmldbg_local/qlocalclientconnection.cpp
@@ -79,8 +79,8 @@ private:
 
 QLocalClientConnection::QLocalClientConnection() :
     m_block(false),
-    m_socket(0),
-    m_debugServer(0)
+    m_socket(nullptr),
+    m_debugServer(nullptr)
 {
 }
 
@@ -106,7 +106,7 @@ void QLocalClientConnection::disconnect()
         m_socket->waitForBytesWritten();
 
     m_socket->deleteLater();
-    m_socket = 0;
+    m_socket = nullptr;
 }
 
 bool QLocalClientConnection::setPortRange(int portFrom, int portTo, bool block,
@@ -161,7 +161,7 @@ void QLocalClientConnection::connectionEstablished()
 
 QQmlDebugServerConnection *QLocalClientConnectionFactory::create(const QString &key)
 {
-    return (key == QLatin1String("QLocalClientConnection") ? new QLocalClientConnection : 0);
+    return (key == QLatin1String("QLocalClientConnection") ? new QLocalClientConnection : nullptr);
 }
 
 QT_END_NAMESPACE
diff --git a/src/plugins/qmltooling/qmldbg_messages/qdebugmessageservice.cpp b/src/plugins/qmltooling/qmldbg_messages/qdebugmessageservice.cpp
index bdfed03a40..2bf9210b37 100644
--- a/src/plugins/qmltooling/qmldbg_messages/qdebugmessageservice.cpp
+++ b/src/plugins/qmltooling/qmldbg_messages/qdebugmessageservice.cpp
@@ -51,7 +51,7 @@ void DebugMessageHandler(QtMsgType type, const QMessageLogContext &ctxt,
 }
 
 QDebugMessageServiceImpl::QDebugMessageServiceImpl(QObject *parent) :
-    QDebugMessageService(2, parent), oldMsgHandler(0),
+    QDebugMessageService(2, parent), oldMsgHandler(nullptr),
     prevState(QQmlDebugService::NotConnected)
 {
     // don't execute stateChanged() in parallel
diff --git a/src/plugins/qmltooling/qmldbg_messages/qdebugmessageservicefactory.cpp b/src/plugins/qmltooling/qmldbg_messages/qdebugmessageservicefactory.cpp
index 860d654128..177ca1fe80 100644
--- a/src/plugins/qmltooling/qmldbg_messages/qdebugmessageservicefactory.cpp
+++ b/src/plugins/qmltooling/qmldbg_messages/qdebugmessageservicefactory.cpp
@@ -48,7 +48,7 @@ QQmlDebugService *QDebugMessageServiceFactory::create(const QString &key)
     if (key == QDebugMessageServiceImpl::s_key)
         return new QDebugMessageServiceImpl(this);
 
-    return 0;
+    return nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/plugins/qmltooling/qmldbg_native/qqmlnativedebugconnector.cpp b/src/plugins/qmltooling/qmldbg_native/qqmlnativedebugconnector.cpp
index a4b3455eff..93ac875e2d 100644
--- a/src/plugins/qmltooling/qmldbg_native/qqmlnativedebugconnector.cpp
+++ b/src/plugins/qmltooling/qmldbg_native/qqmlnativedebugconnector.cpp
@@ -224,7 +224,7 @@ QQmlDebugService *QQmlNativeDebugConnector::service(const QString &name) const
         if ((*i)->name() == name)
             return *i;
     }
-    return 0;
+    return nullptr;
 }
 
 void QQmlNativeDebugConnector::addEngine(QJSEngine *engine)
@@ -360,7 +360,7 @@ void QQmlNativeDebugConnector::sendMessages(const QString &name, const QList<QBy
 
 QQmlDebugConnector *QQmlNativeDebugConnectorFactory::create(const QString &key)
 {
-    return key == QLatin1String("QQmlNativeDebugConnector") ? new QQmlNativeDebugConnector : 0;
+    return key == QLatin1String("QQmlNativeDebugConnector") ? new QQmlNativeDebugConnector : nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/plugins/qmltooling/qmldbg_nativedebugger/qqmlnativedebugservice.cpp b/src/plugins/qmltooling/qmldbg_nativedebugger/qqmlnativedebugservice.cpp
index ba33de9714..718975275a 100644
--- a/src/plugins/qmltooling/qmldbg_nativedebugger/qqmlnativedebugservice.cpp
+++ b/src/plugins/qmltooling/qmldbg_nativedebugger/qqmlnativedebugservice.cpp
@@ -229,7 +229,7 @@ private:
 
     QV4::ExecutionEngine *m_engine;
     QQmlNativeDebugServiceImpl *m_service;
-    QV4::CppStackFrame *m_currentFrame = 0;
+    QV4::CppStackFrame *m_currentFrame = nullptr;
     Speed m_stepping;
     bool m_pauseRequested;
     bool m_runningJob;
@@ -457,7 +457,7 @@ void Collector::collect(QJsonArray *out, const QString &parentIName, const QStri
 void NativeDebugger::handleVariables(QJsonObject *response, const QJsonObject &arguments)
 {
     TRACE_PROTOCOL("Build variables");
-    QV4::CppStackFrame *frame = 0;
+    QV4::CppStackFrame *frame = nullptr;
     decodeFrame(arguments.value(QLatin1String("context")).toString(), &frame);
     if (!frame) {
         setError(response, QStringLiteral("No stack frame passed"));
@@ -500,7 +500,7 @@ void NativeDebugger::handleVariables(QJsonObject *response, const QJsonObject &a
 void NativeDebugger::handleExpressions(QJsonObject *response, const QJsonObject &arguments)
 {
     TRACE_PROTOCOL("Evaluate expressions");
-    QV4::CppStackFrame *frame = 0;
+    QV4::CppStackFrame *frame = nullptr;
     decodeFrame(arguments.value(QLatin1String("context")).toString(), &frame);
     if (!frame) {
         setError(response, QStringLiteral("No stack frame passed"));
diff --git a/src/plugins/qmltooling/qmldbg_nativedebugger/qqmlnativedebugservicefactory.cpp b/src/plugins/qmltooling/qmldbg_nativedebugger/qqmlnativedebugservicefactory.cpp
index 1841c82d5d..c0b74c74ff 100644
--- a/src/plugins/qmltooling/qmldbg_nativedebugger/qqmlnativedebugservicefactory.cpp
+++ b/src/plugins/qmltooling/qmldbg_nativedebugger/qqmlnativedebugservicefactory.cpp
@@ -48,7 +48,7 @@ QQmlDebugService *QQmlNativeDebugServiceFactory::create(const QString &key)
     if (key == QQmlNativeDebugServiceImpl::s_key)
         return new QQmlNativeDebugServiceImpl(this);
 
-    return 0;
+    return nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/plugins/qmltooling/qmldbg_profiler/qqmlprofilerservice.cpp b/src/plugins/qmltooling/qmldbg_profiler/qqmlprofilerservice.cpp
index 1c4daba6af..eb6fbce101 100644
--- a/src/plugins/qmltooling/qmldbg_profiler/qqmlprofilerservice.cpp
+++ b/src/plugins/qmltooling/qmldbg_profiler/qqmlprofilerservice.cpp
@@ -242,7 +242,7 @@ void QQmlProfilerServiceImpl::startProfiling(QJSEngine *engine, quint64 features
 
     d << m_timer.nsecsElapsed() << static_cast<qint32>(Event) << static_cast<qint32>(StartTrace);
     bool startedAny = false;
-    if (engine != 0) {
+    if (engine != nullptr) {
         const auto range = qAsConst(m_engineProfilers).equal_range(engine);
         for (auto it = range.first; it != range.second; ++it) {
             QQmlAbstractProfilerAdapter *profiler = *it;
@@ -297,7 +297,7 @@ void QQmlProfilerServiceImpl::stopProfiling(QJSEngine *engine)
             i != m_engineProfilers.end(); ++i) {
         if (i.value()->isRunning()) {
             m_startTimes.insert(-1, i.value());
-            if (engine == 0 || i.key() == engine) {
+            if (engine == nullptr || i.key() == engine) {
                 stopping << i.value();
             } else {
                 reporting << i.value();
diff --git a/src/plugins/qmltooling/qmldbg_profiler/qqmlprofilerservicefactory.cpp b/src/plugins/qmltooling/qmldbg_profiler/qqmlprofilerservicefactory.cpp
index 0cd3e0b4ab..81a1a35d18 100644
--- a/src/plugins/qmltooling/qmldbg_profiler/qqmlprofilerservicefactory.cpp
+++ b/src/plugins/qmltooling/qmldbg_profiler/qqmlprofilerservicefactory.cpp
@@ -51,7 +51,7 @@ QQmlDebugService *QQmlProfilerServiceFactory::create(const QString &key)
     if (key == QQmlEngineControlServiceImpl::s_key)
         return new QQmlEngineControlServiceImpl(this);
 
-    return 0;
+    return nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/plugins/qmltooling/qmldbg_quickprofiler/qquickprofileradapterfactory.cpp b/src/plugins/qmltooling/qmldbg_quickprofiler/qquickprofileradapterfactory.cpp
index f38307b1f7..66addee2e8 100644
--- a/src/plugins/qmltooling/qmldbg_quickprofiler/qquickprofileradapterfactory.cpp
+++ b/src/plugins/qmltooling/qmldbg_quickprofiler/qquickprofileradapterfactory.cpp
@@ -47,7 +47,7 @@ QT_BEGIN_NAMESPACE
 QQmlAbstractProfilerAdapter *QQuickProfilerAdapterFactory::create(const QString &key)
 {
     if (key != QLatin1String("QQuickProfilerAdapter"))
-        return 0;
+        return nullptr;
     return new QQuickProfilerAdapter(this);
 }
 
diff --git a/src/plugins/qmltooling/qmldbg_server/qqmldebugserver.cpp b/src/plugins/qmltooling/qmldbg_server/qqmldebugserver.cpp
index f87ade568b..1814e28b83 100644
--- a/src/plugins/qmltooling/qmldbg_server/qqmldebugserver.cpp
+++ b/src/plugins/qmltooling/qmldbg_server/qqmldebugserver.cpp
@@ -88,7 +88,7 @@ class QQmlDebugServerImpl;
 class QQmlDebugServerThread : public QThread
 {
 public:
-    QQmlDebugServerThread() : m_server(0), m_portFrom(-1), m_portTo(-1) {}
+    QQmlDebugServerThread() : m_server(nullptr), m_portFrom(-1), m_portTo(-1) {}
 
     void setServer(QQmlDebugServerImpl *server)
     {
@@ -228,7 +228,7 @@ void QQmlDebugServerImpl::cleanup()
 
 void QQmlDebugServerThread::run()
 {
-    Q_ASSERT_X(m_server != 0, Q_FUNC_INFO, "There should always be a debug server available here.");
+    Q_ASSERT_X(m_server != nullptr, Q_FUNC_INFO, "There should always be a debug server available here.");
     QQmlDebugServerConnection *connection = loadQQmlDebugServerConnection(m_pluginName);
     if (connection) {
         {
@@ -274,7 +274,7 @@ static void cleanupOnShutdown()
 }
 
 QQmlDebugServerImpl::QQmlDebugServerImpl() :
-    m_connection(0),
+    m_connection(nullptr),
     m_gotHello(false),
     m_blockingMode(false),
     m_clientSupportsMultiPackets(false)
@@ -570,7 +570,7 @@ void QQmlDebugServerImpl::removeThread()
     QThread *parentThread = m_thread.thread();
 
     delete m_connection;
-    m_connection = 0;
+    m_connection = nullptr;
 
     // Move it back to the parent thread so that we can potentially restart it on a new thread.
     moveToThread(parentThread);
@@ -755,13 +755,13 @@ void QQmlDebugServerImpl::invalidPacket()
     m_connection->disconnect();
     // protocol might still be processing packages at this point
     m_protocol->deleteLater();
-    m_protocol = 0;
+    m_protocol = nullptr;
 }
 
 QQmlDebugConnector *QQmlDebugServerFactory::create(const QString &key)
 {
     // Cannot parent it to this because it gets moved to another thread
-    return (key == QLatin1String("QQmlDebugServer") ? new QQmlDebugServerImpl : 0);
+    return (key == QLatin1String("QQmlDebugServer") ? new QQmlDebugServerImpl : nullptr);
 }
 
 QT_END_NAMESPACE
diff --git a/src/plugins/qmltooling/qmldbg_tcp/qtcpserverconnection.cpp b/src/plugins/qmltooling/qmldbg_tcp/qtcpserverconnection.cpp
index c2aafda863..4006bf17ff 100644
--- a/src/plugins/qmltooling/qmldbg_tcp/qtcpserverconnection.cpp
+++ b/src/plugins/qmltooling/qmldbg_tcp/qtcpserverconnection.cpp
@@ -83,9 +83,9 @@ QTcpServerConnection::QTcpServerConnection() :
     m_portFrom(0),
     m_portTo(0),
     m_block(false),
-    m_socket(0),
-    m_tcpServer(0),
-    m_debugServer(0)
+    m_socket(nullptr),
+    m_tcpServer(nullptr),
+    m_debugServer(nullptr)
 {
 }
 
@@ -116,7 +116,7 @@ void QTcpServerConnection::disconnect()
     }
 
     m_socket->deleteLater();
-    m_socket = 0;
+    m_socket = nullptr;
 }
 
 bool QTcpServerConnection::setPortRange(int portFrom, int portTo, bool block,
@@ -199,7 +199,7 @@ void QTcpServerConnection::newConnection()
 
 QQmlDebugServerConnection *QTcpServerConnectionFactory::create(const QString &key)
 {
-    return (key == QLatin1String("QTcpServerConnection") ? new QTcpServerConnection : 0);
+    return (key == QLatin1String("QTcpServerConnection") ? new QTcpServerConnection : nullptr);
 }
 
 QT_END_NAMESPACE
diff --git a/src/qml/animations/qabstractanimationjob.cpp b/src/qml/animations/qabstractanimationjob.cpp
index b726d2fc43..3f33e7e81b 100644
--- a/src/qml/animations/qabstractanimationjob.cpp
+++ b/src/qml/animations/qabstractanimationjob.cpp
@@ -258,7 +258,7 @@ int QQmlAnimationTimer::closestPauseAnimationTimeToFinish()
 
 QAbstractAnimationJob::QAbstractAnimationJob()
     : m_loopCount(1)
-    , m_group(0)
+    , m_group(nullptr)
     , m_direction(QAbstractAnimationJob::Forward)
     , m_state(QAbstractAnimationJob::Stopped)
     , m_totalCurrentTime(0)
@@ -266,9 +266,9 @@ QAbstractAnimationJob::QAbstractAnimationJob()
     , m_currentLoop(0)
     , m_uncontrolledFinishTime(-1)
     , m_currentLoopStartTime(0)
-    , m_nextSibling(0)
-    , m_previousSibling(0)
-    , m_wasDeleted(0)
+    , m_nextSibling(nullptr)
+    , m_previousSibling(nullptr)
+    , m_wasDeleted(nullptr)
     , m_hasRegisteredTimer(false)
     , m_isPause(false)
     , m_isGroup(false)
diff --git a/src/qml/animations/qanimationgroupjob.cpp b/src/qml/animations/qanimationgroupjob.cpp
index ea6d87952a..344791fd83 100644
--- a/src/qml/animations/qanimationgroupjob.cpp
+++ b/src/qml/animations/qanimationgroupjob.cpp
@@ -42,7 +42,7 @@
 QT_BEGIN_NAMESPACE
 
 QAnimationGroupJob::QAnimationGroupJob()
-    : QAbstractAnimationJob(), m_firstChild(0), m_lastChild(0)
+    : QAbstractAnimationJob(), m_firstChild(nullptr), m_lastChild(nullptr)
 {
     m_isGroup = true;
 }
@@ -111,25 +111,25 @@ void QAnimationGroupJob::removeAnimation(QAbstractAnimationJob *animation)
     else
         m_lastChild = prev;
 
-    animation->m_previousSibling = 0;
-    animation->m_nextSibling = 0;
+    animation->m_previousSibling = nullptr;
+    animation->m_nextSibling = nullptr;
 
-    animation->m_group = 0;
+    animation->m_group = nullptr;
     animationRemoved(animation, prev, next);
 }
 
 void QAnimationGroupJob::clear()
 {
     QAbstractAnimationJob *child = firstChild();
-    QAbstractAnimationJob *nextSibling = 0;
-    while (child != 0) {
-         child->m_group = 0;
+    QAbstractAnimationJob *nextSibling = nullptr;
+    while (child != nullptr) {
+         child->m_group = nullptr;
          nextSibling = child->nextSibling();
          delete child;
          child = nextSibling;
     }
-    m_firstChild = 0;
-    m_lastChild = 0;
+    m_firstChild = nullptr;
+    m_lastChild = nullptr;
 }
 
 void QAnimationGroupJob::resetUncontrolledAnimationsFinishTime()
diff --git a/src/qml/animations/qsequentialanimationgroupjob.cpp b/src/qml/animations/qsequentialanimationgroupjob.cpp
index 25d31e4042..22e20d9268 100644
--- a/src/qml/animations/qsequentialanimationgroupjob.cpp
+++ b/src/qml/animations/qsequentialanimationgroupjob.cpp
@@ -45,7 +45,7 @@ QT_BEGIN_NAMESPACE
 
 QSequentialAnimationGroupJob::QSequentialAnimationGroupJob()
     : QAnimationGroupJob()
-    , m_currentAnimation(0)
+    , m_currentAnimation(nullptr)
     , m_previousLoop(0)
 {
 }
@@ -87,7 +87,7 @@ QSequentialAnimationGroupJob::AnimationIndex QSequentialAnimationGroupJob::index
     Q_ASSERT(firstChild());
 
     AnimationIndex ret;
-    QAbstractAnimationJob *anim = 0;
+    QAbstractAnimationJob *anim = nullptr;
     int duration = 0;
 
     for (anim = firstChild(); anim; anim = anim->nextSibling()) {
@@ -283,7 +283,7 @@ void QSequentialAnimationGroupJob::setCurrentAnimation(QAbstractAnimationJob *an
 {
     if (!anim) {
         Q_ASSERT(!firstChild());
-        m_currentAnimation = 0;
+        m_currentAnimation = nullptr;
         return;
     }
 
@@ -364,7 +364,7 @@ void QSequentialAnimationGroupJob::uncontrolledAnimationFinished(QAbstractAnimat
 
 void QSequentialAnimationGroupJob::animationInserted(QAbstractAnimationJob *anim)
 {
-    if (m_currentAnimation == 0)
+    if (m_currentAnimation == nullptr)
         setCurrentAnimation(firstChild()); // initialize the current animation
 
     if (m_currentAnimation == anim->nextSibling()
@@ -393,7 +393,7 @@ void QSequentialAnimationGroupJob::animationRemoved(QAbstractAnimationJob *anim,
         else if (prev)
             setCurrentAnimation(prev);
         else// case all animations were removed
-            setCurrentAnimation(0);
+            setCurrentAnimation(nullptr);
     }
 
     // duration of the previous animations up to the current animation
diff --git a/src/qml/animations/qsequentialanimationgroupjob_p.h b/src/qml/animations/qsequentialanimationgroupjob_p.h
index 5fbafcb9ac..c7023b77c6 100644
--- a/src/qml/animations/qsequentialanimationgroupjob_p.h
+++ b/src/qml/animations/qsequentialanimationgroupjob_p.h
@@ -77,7 +77,7 @@ protected:
 private:
     struct AnimationIndex
     {
-        AnimationIndex() : afterCurrent(false), timeOffset(0), animation(0) {}
+        AnimationIndex() : afterCurrent(false), timeOffset(0), animation(nullptr) {}
         // AnimationIndex points to the animation at timeOffset, skipping 0 duration animations.
         // Note that the index semantic is slightly different depending on the direction.
         bool afterCurrent;  //whether animation is before or after m_currentAnimation   //TODO: make enum Before/After/Same
diff --git a/src/qml/compiler/qqmlirbuilder.cpp b/src/qml/compiler/qqmlirbuilder.cpp
index 6c8ca4bbfc..237cd9bf3b 100644
--- a/src/qml/compiler/qqmlirbuilder.cpp
+++ b/src/qml/compiler/qqmlirbuilder.cpp
@@ -93,7 +93,7 @@ void Object::init(QQmlJS::MemoryPool *pool, int typeNameIndex, int idIndex, cons
     bindings = pool->New<PoolList<Binding> >();
     functions = pool->New<PoolList<Function> >();
     functionsAndExpressions = pool->New<PoolList<CompiledFunctionOrExpression> >();
-    declarationsOverride = 0;
+    declarationsOverride = nullptr;
 }
 
 QString Object::sanityCheckFunctionNames(const QSet<QString> &illegalNames, QQmlJS::AST::SourceLocation *errorLocation)
@@ -233,7 +233,7 @@ Binding *Object::findBinding(quint32 nameIndex) const
     for (Binding *b = bindings->first; b; b = b->next)
         if (b->propertyNameIndex == nameIndex)
             return b;
-    return 0;
+    return nullptr;
 }
 
 void Object::insertSorted(Binding *b)
@@ -275,7 +275,7 @@ void Document::removeScriptPragmas(QString &script)
     const QLatin1String pragma("pragma");
     const QLatin1String library("library");
 
-    QQmlJS::Lexer l(0);
+    QQmlJS::Lexer l(nullptr);
     l.setCode(script, 0);
 
     int token = l.lex();
@@ -317,7 +317,7 @@ void Document::removeScriptPragmas(QString &script)
 
 Document::Document(bool debugMode)
     : jsModule(debugMode)
-    , program(0)
+    , program(nullptr)
     , jsGenerator(&jsModule)
 {
 }
@@ -363,16 +363,16 @@ void ScriptDirectivesCollector::importModule(const QString &uri, const QString &
 
 IRBuilder::IRBuilder(const QSet<QString> &illegalNames)
     : illegalNames(illegalNames)
-    , _object(0)
-    , _propertyDeclaration(0)
-    , pool(0)
-    , jsGenerator(0)
+    , _object(nullptr)
+    , _propertyDeclaration(nullptr)
+    , pool(nullptr)
+    , jsGenerator(nullptr)
 {
 }
 
 bool IRBuilder::generateFromQml(const QString &code, const QString &url, Document *output)
 {
-    QQmlJS::AST::UiProgram *program = 0;
+    QQmlJS::AST::UiProgram *program = nullptr;
     {
         QQmlJS::Lexer lexer(&output->jsParserEngine);
         lexer.setCode(code, /*line = */ 1);
@@ -479,7 +479,7 @@ bool IRBuilder::visit(QQmlJS::AST::UiObjectDefinition *node)
         appendBinding(nameLocation, nameLocation, emptyStringIndex, idx);
     } else {
         int idx = 0;
-        if (!defineQMLObject(&idx, /*qualfied type name id*/0, node->qualifiedTypeNameId->firstSourceLocation(), node->initializer, /*declarations should go here*/_object))
+        if (!defineQMLObject(&idx, /*qualfied type name id*/nullptr, node->qualifiedTypeNameId->firstSourceLocation(), node->initializer, /*declarations should go here*/_object))
             return false;
         appendBinding(node->qualifiedTypeNameId, idx);
     }
@@ -504,7 +504,7 @@ bool IRBuilder::visit(QQmlJS::AST::UiScriptBinding *node)
 bool IRBuilder::visit(QQmlJS::AST::UiArrayBinding *node)
 {
     const QQmlJS::AST::SourceLocation qualifiedNameLocation = node->qualifiedId->identifierToken;
-    Object *object = 0;
+    Object *object = nullptr;
     QQmlJS::AST::UiQualifiedId *name = node->qualifiedId;
     if (!resolveQualifiedId(&name, &object))
         return false;
@@ -513,7 +513,7 @@ bool IRBuilder::visit(QQmlJS::AST::UiArrayBinding *node)
 
     const int propertyNameIndex = registerString(name->name.toString());
 
-    if (bindingsTarget()->findBinding(propertyNameIndex) != 0) {
+    if (bindingsTarget()->findBinding(propertyNameIndex) != nullptr) {
         recordError(name->identifierToken, tr("Property value set multiple times"));
         return false;
     }
@@ -588,7 +588,7 @@ bool IRBuilder::defineQMLObject(int *objectIndex, QQmlJS::AST::UiQualifiedId *qu
     _object->declarationsOverride = declarationsOverride;
 
     // A new object is also a boundary for property declarations.
-    Property *declaration = 0;
+    Property *declaration = nullptr;
     qSwap(_propertyDeclaration, declaration);
 
     accept(initializer);
@@ -831,7 +831,7 @@ bool IRBuilder::visit(QQmlJS::AST::UiPublicMember *node)
                 return false;
             }
 
-            const TypeNameToType *type = 0;
+            const TypeNameToType *type = nullptr;
             for (int typeIndex = 0; typeIndex < propTypeNameToTypesCount; ++typeIndex) {
                 const TypeNameToType *t = propTypeNameToTypes + typeIndex;
                 if (memberType == QLatin1String(t->name, static_cast<int>(t->nameLength))) {
@@ -1219,7 +1219,7 @@ void IRBuilder::tryGeneratingTranslationBinding(const QStringRef &base, AST::Arg
 void IRBuilder::appendBinding(QQmlJS::AST::UiQualifiedId *name, QQmlJS::AST::Statement *value)
 {
     const QQmlJS::AST::SourceLocation qualifiedNameLocation = name->identifierToken;
-    Object *object = 0;
+    Object *object = nullptr;
     if (!resolveQualifiedId(&name, &object))
         return;
     if (_object == object && name->name == QLatin1String("id")) {
@@ -1234,7 +1234,7 @@ void IRBuilder::appendBinding(QQmlJS::AST::UiQualifiedId *name, QQmlJS::AST::Sta
 void IRBuilder::appendBinding(QQmlJS::AST::UiQualifiedId *name, int objectIndex, bool isOnAssignment)
 {
     const QQmlJS::AST::SourceLocation qualifiedNameLocation = name->identifierToken;
-    Object *object = 0;
+    Object *object = nullptr;
     if (!resolveQualifiedId(&name, &object, isOnAssignment))
         return;
     qSwap(_object, object);
@@ -1385,7 +1385,7 @@ bool IRBuilder::setId(const QQmlJS::AST::SourceLocation &idLocation, QQmlJS::AST
     if (QQmlJS::AST::ExpressionStatement *stmt = QQmlJS::AST::cast<QQmlJS::AST::ExpressionStatement *>(node)) {
         if (QQmlJS::AST::StringLiteral *lit = QQmlJS::AST::cast<QQmlJS::AST::StringLiteral *>(stmt->expression)) {
             str = lit->value;
-            node = 0;
+            node = nullptr;
         } else
             node = stmt->expression;
     }
@@ -1456,9 +1456,9 @@ bool IRBuilder::resolveQualifiedId(QQmlJS::AST::UiQualifiedId **nameToResolve, O
         if (binding) {
             if (isAttachedProperty) {
                 if (!binding->isAttachedProperty())
-                    binding = 0;
+                    binding = nullptr;
             } else if (!binding->isGroupProperty()) {
-                binding = 0;
+                binding = nullptr;
             }
         }
         if (!binding) {
@@ -1480,7 +1480,7 @@ bool IRBuilder::resolveQualifiedId(QQmlJS::AST::UiQualifiedId **nameToResolve, O
                 binding->type = QV4::CompiledData::Binding::Type_GroupProperty;
 
             int objIndex = 0;
-            if (!defineQMLObject(&objIndex, 0, QQmlJS::AST::SourceLocation(), 0, 0))
+            if (!defineQMLObject(&objIndex, nullptr, QQmlJS::AST::SourceLocation(), nullptr, nullptr))
                 return false;
             binding->value.objectIndex = objIndex;
 
@@ -1582,7 +1582,7 @@ QV4::CompiledData::Unit *QmlUnitGenerator::generate(Document &output, const QV4:
     memset(data + unitSize, 0, totalSize - unitSize);
     if (jsUnit != compilationUnit->data)
         free(jsUnit);
-    jsUnit = 0;
+    jsUnit = nullptr;
 
     QV4::CompiledData::Unit *qmlUnit = reinterpret_cast<QV4::CompiledData::Unit *>(data);
     qmlUnit->unitSize = totalSize;
@@ -1782,8 +1782,8 @@ JSCodeGen::JSCodeGen(const QString &sourceCode, QV4::Compiler::JSUnitGenerator *
     , imports(imports)
     , stringPool(stringPool)
     , _disableAcceleratedLookups(false)
-    , _contextObject(0)
-    , _scopeObject(0)
+    , _contextObject(nullptr)
+    , _scopeObject(nullptr)
     , _qmlContextSlot(-1)
     , _importedScriptsSlot(-1)
     , m_globalNames(globalNames)
@@ -1796,7 +1796,7 @@ void JSCodeGen::beginContextScope(const JSCodeGen::ObjectIdMapping &objectIds, Q
 {
     _idObjects = objectIds;
     _contextObject = contextObject;
-    _scopeObject = 0;
+    _scopeObject = nullptr;
 }
 
 void JSCodeGen::beginObjectScope(QQmlPropertyCache *scopeObject)
@@ -1809,7 +1809,7 @@ QVector<int> JSCodeGen::generateJSCodeForFunctionsAndBindings(const QList<Compil
     QVector<int> runtimeFunctionIndices(functions.size());
 
     QV4::Compiler::ScanFunctions scan(this, sourceCode, QV4::Compiler::GlobalCode);
-    scan.enterEnvironment(0, QV4::Compiler::QmlBinding);
+    scan.enterEnvironment(nullptr, QV4::Compiler::QmlBinding);
     scan.enterQmlScope(qmlRoot, QStringLiteral("context scope"));
     for (const CompiledFunctionOrExpression &f : functions) {
         Q_ASSERT(f.node != qmlRoot);
@@ -1826,7 +1826,7 @@ QVector<int> JSCodeGen::generateJSCodeForFunctionsAndBindings(const QList<Compil
     scan.leaveEnvironment();
     scan.leaveEnvironment();
 
-    _context = 0;
+    _context = nullptr;
 
     for (int i = 0; i < functions.count(); ++i) {
         const CompiledFunctionOrExpression &qmlFunction = functions.at(i);
@@ -1845,7 +1845,7 @@ QVector<int> JSCodeGen::generateJSCodeForFunctionsAndBindings(const QList<Compil
 
         QQmlJS::AST::SourceElements *body;
         if (function)
-            body = function->body ? function->body->elements : 0;
+            body = function->body ? function->body->elements : nullptr;
         else {
             // Synthesize source elements.
             QQmlJS::MemoryPool *pool = jsEngine->pool();
@@ -1863,7 +1863,7 @@ QVector<int> JSCodeGen::generateJSCodeForFunctionsAndBindings(const QList<Compil
 
         _disableAcceleratedLookups = qmlFunction.disableAcceleratedLookups;
         int idx = defineFunction(name, node,
-                                 function ? function->formals : 0,
+                                 function ? function->formals : nullptr,
                                  body);
         runtimeFunctionIndices[i] = idx;
     }
@@ -1889,14 +1889,14 @@ int JSCodeGen::defineFunction(const QString &name, AST::Node *ast, AST::FormalPa
 #ifndef V4_BOOTSTRAP
 QQmlPropertyData *JSCodeGen::lookupQmlCompliantProperty(QQmlPropertyCache *cache, const QString &name)
 {
-    QQmlPropertyData *pd = cache->property(name, /*object*/0, /*context*/0);
+    QQmlPropertyData *pd = cache->property(name, /*object*/nullptr, /*context*/nullptr);
 
     // Q_INVOKABLEs can't be FINAL, so we have to look them up at run-time
     if (!pd || pd->isFunction())
-        return 0;
+        return nullptr;
 
     if (!cache->isAllowedInRevision(pd))
-        return 0;
+        return nullptr;
 
     return pd;
 }
@@ -2273,7 +2273,7 @@ QQmlPropertyData *PropertyResolver::property(const QString &name, bool *notInRev
 {
     if (notInRevision) *notInRevision = false;
 
-    QQmlPropertyData *d = cache->property(name, 0, 0);
+    QQmlPropertyData *d = cache->property(name, nullptr, nullptr);
 
     // Find the first property
     while (d && d->isFunction())
@@ -2281,7 +2281,7 @@ QQmlPropertyData *PropertyResolver::property(const QString &name, bool *notInRev
 
     if (check != IgnoreRevision && d && !cache->isAllowedInRevision(d)) {
         if (notInRevision) *notInRevision = true;
-        return 0;
+        return nullptr;
     } else {
         return d;
     }
@@ -2292,7 +2292,7 @@ QQmlPropertyData *PropertyResolver::signal(const QString &name, bool *notInRevis
 {
     if (notInRevision) *notInRevision = false;
 
-    QQmlPropertyData *d = cache->property(name, 0, 0);
+    QQmlPropertyData *d = cache->property(name, nullptr, nullptr);
     if (notInRevision) *notInRevision = false;
 
     while (d && !(d->isFunction()))
@@ -2300,7 +2300,7 @@ QQmlPropertyData *PropertyResolver::signal(const QString &name, bool *notInRevis
 
     if (d && !cache->isAllowedInRevision(d)) {
         if (notInRevision) *notInRevision = true;
-        return 0;
+        return nullptr;
     } else if (d && d->isSignal()) {
         return d;
     }
@@ -2313,7 +2313,7 @@ QQmlPropertyData *PropertyResolver::signal(const QString &name, bool *notInRevis
             return cache->signal(d->notifyIndex());
     }
 
-    return 0;
+    return nullptr;
 }
 
 IRLoader::IRLoader(const QV4::CompiledData::Unit *qmlData, QmlIR::Document *output)
@@ -2450,7 +2450,7 @@ QmlIR::Object *IRLoader::loadObject(const QV4::CompiledData::Object *serializedO
         f->location = compiledFunction->location;
         f->nameIndex = compiledFunction->nameIndex;
 
-        QQmlJS::AST::FormalParameterList *paramList = 0;
+        QQmlJS::AST::FormalParameterList *paramList = nullptr;
         const quint32_le *formalNameIdx = compiledFunction->formalsTable();
         for (uint i = 0; i < compiledFunction->nFormals; ++i, ++formalNameIdx) {
             const QString formal = unit->stringAt(*formalNameIdx);
@@ -2466,7 +2466,7 @@ QmlIR::Object *IRLoader::loadObject(const QV4::CompiledData::Object *serializedO
             paramList = paramList->finish();
 
         const QString name = unit->stringAt(compiledFunction->nameIndex);
-        f->functionDeclaration = new(pool) QQmlJS::AST::FunctionDeclaration(jsParserEngine->newStringRef(name), paramList, /*body*/0);
+        f->functionDeclaration = new(pool) QQmlJS::AST::FunctionDeclaration(jsParserEngine->newStringRef(name), paramList, /*body*/nullptr);
 
         f->formals.allocate(pool, int(compiledFunction->nFormals));
         formalNameIdx = compiledFunction->formalsTable();
diff --git a/src/qml/compiler/qqmlirbuilder_p.h b/src/qml/compiler/qqmlirbuilder_p.h
index f8f8649fc7..673bc2c481 100644
--- a/src/qml/compiler/qqmlirbuilder_p.h
+++ b/src/qml/compiler/qqmlirbuilder_p.h
@@ -80,8 +80,8 @@ template <typename T>
 struct PoolList
 {
     PoolList()
-        : first(0)
-        , last(0)
+        : first(nullptr)
+        , last(nullptr)
         , count(0)
     {}
 
@@ -90,7 +90,7 @@ struct PoolList
     int count;
 
     int append(T *item) {
-        item->next = 0;
+        item->next = nullptr;
         if (last)
             last->next = item;
         else
@@ -110,7 +110,7 @@ struct PoolList
     template <typename Sortable, typename Base, Sortable Base::*sortMember>
     T *findSortedInsertionPoint(T *item) const
     {
-        T *insertPos = 0;
+        T *insertPos = nullptr;
 
         for (T *it = first; it; it = it->next) {
             if (!(it->*sortMember <= item->*sortMember))
@@ -208,7 +208,7 @@ public:
     int count;
 
     FixedPoolArray()
-        : data(0)
+        : data(nullptr)
         , count(0)
     {}
 
@@ -343,16 +343,16 @@ struct Function
 struct Q_QML_PRIVATE_EXPORT CompiledFunctionOrExpression
 {
     CompiledFunctionOrExpression()
-        : node(0)
+        : node(nullptr)
         , nameIndex(0)
         , disableAcceleratedLookups(false)
-        , next(0)
+        , next(nullptr)
     {}
     CompiledFunctionOrExpression(QQmlJS::AST::Node *n)
         : node(n)
         , nameIndex(0)
         , disableAcceleratedLookups(false)
-        , next(0)
+        , next(nullptr)
     {}
     QQmlJS::AST::Node *node; // FunctionDeclaration, Statement or Expression
     quint32 nameIndex;
@@ -514,8 +514,8 @@ public:
     void accept(QQmlJS::AST::Node *node);
 
     // returns index in _objects
-    bool defineQMLObject(int *objectIndex, QQmlJS::AST::UiQualifiedId *qualifiedTypeNameId, const QQmlJS::AST::SourceLocation &location, QQmlJS::AST::UiObjectInitializer *initializer, Object *declarationsOverride = 0);
-    bool defineQMLObject(int *objectIndex, QQmlJS::AST::UiObjectDefinition *node, Object *declarationsOverride = 0)
+    bool defineQMLObject(int *objectIndex, QQmlJS::AST::UiQualifiedId *qualifiedTypeNameId, const QQmlJS::AST::SourceLocation &location, QQmlJS::AST::UiObjectInitializer *initializer, Object *declarationsOverride = nullptr);
+    bool defineQMLObject(int *objectIndex, QQmlJS::AST::UiObjectDefinition *node, Object *declarationsOverride = nullptr)
     { return defineQMLObject(objectIndex, node->qualifiedTypeNameId, node->qualifiedTypeNameId->firstSourceLocation(), node->initializer, declarationsOverride); }
 
     static QString asString(QQmlJS::AST::UiQualifiedId *node);
@@ -598,7 +598,7 @@ struct Q_QML_EXPORT PropertyResolver
         IgnoreRevision
     };
 
-    QQmlPropertyData *property(const QString &name, bool *notInRevision = 0, RevisionCheck check = CheckRevision) const;
+    QQmlPropertyData *property(const QString &name, bool *notInRevision = nullptr, RevisionCheck check = CheckRevision) const;
 
     // This code must match the semantics of QQmlPropertyPrivate::findSignalByName
     QQmlPropertyData *signal(const QString &name, bool *notInRevision) const;
diff --git a/src/qml/compiler/qqmlpropertycachecreator_p.h b/src/qml/compiler/qqmlpropertycachecreator_p.h
index 7a52f3a12c..2af0fe0036 100644
--- a/src/qml/compiler/qqmlpropertycachecreator_p.h
+++ b/src/qml/compiler/qqmlpropertycachecreator_p.h
@@ -214,7 +214,7 @@ inline QQmlPropertyCache *QQmlPropertyCacheCreator<ObjectContainer>::propertyCac
         QQmlType qmltype = typeRef->type;
         if (!qmltype.isValid()) {
             QString propertyName = stringAt(context.instantiatingBinding->propertyNameIndex);
-            if (imports->resolveType(propertyName, &qmltype, 0, 0, 0)) {
+            if (imports->resolveType(propertyName, &qmltype, nullptr, nullptr, nullptr)) {
                 if (qmltype.isComposite()) {
                     QQmlTypeData *tdata = enginePrivate->typeLoader.getType(qmltype.sourceUrl());
                     Q_ASSERT(tdata);
@@ -411,7 +411,7 @@ inline QQmlCompileError QQmlPropertyCacheCreator<ObjectContainer>::createMetaObj
                     Q_ASSERT(param->type == QV4::CompiledData::Property::Custom);
                     const QString customTypeName = stringAt(param->customTypeNameIndex);
                     QQmlType qmltype;
-                    if (!imports->resolveType(customTypeName, &qmltype, 0, 0, 0))
+                    if (!imports->resolveType(customTypeName, &qmltype, nullptr, nullptr, nullptr))
                         return QQmlCompileError(s->location, QQmlPropertyCacheCreatorBase::tr("Invalid signal parameter type: %1").arg(customTypeName));
 
                     if (qmltype.isComposite()) {
@@ -441,7 +441,7 @@ inline QQmlCompileError QQmlPropertyCacheCreator<ObjectContainer>::createMetaObj
         seenSignals.insert(signalName);
 
         cache->appendSignal(signalName, flags, effectiveMethodIndex++,
-                            paramCount?paramTypes.constData():0, names);
+                            paramCount?paramTypes.constData():nullptr, names);
     }
 
 
@@ -492,7 +492,7 @@ inline QQmlCompileError QQmlPropertyCacheCreator<ObjectContainer>::createMetaObj
                      p->type == QV4::CompiledData::Property::Custom);
 
             QQmlType qmltype;
-            if (!imports->resolveType(stringAt(p->customTypeNameIndex), &qmltype, 0, 0, 0)) {
+            if (!imports->resolveType(stringAt(p->customTypeNameIndex), &qmltype, nullptr, nullptr, nullptr)) {
                 return QQmlCompileError(p->location, QQmlPropertyCacheCreatorBase::tr("Invalid property type"));
             }
 
diff --git a/src/qml/compiler/qqmlpropertyvalidator.cpp b/src/qml/compiler/qqmlpropertyvalidator.cpp
index 3aa8befa2c..00bb694ef4 100644
--- a/src/qml/compiler/qqmlpropertyvalidator.cpp
+++ b/src/qml/compiler/qqmlpropertyvalidator.cpp
@@ -58,7 +58,7 @@ QQmlPropertyValidator::QQmlPropertyValidator(QQmlEnginePrivate *enginePrivate, c
 
 QVector<QQmlCompileError> QQmlPropertyValidator::validate()
 {
-    return validateObject(/*root object*/0, /*instantiatingBinding*/0);
+    return validateObject(/*root object*/0, /*instantiatingBinding*/nullptr);
 }
 
 typedef QVarLengthArray<const QV4::CompiledData::Binding *, 8> GroupPropertyVector;
@@ -94,7 +94,7 @@ QVector<QQmlCompileError> QQmlPropertyValidator::validateObject(int objectIndex,
     if (!propertyCache)
         return QVector<QQmlCompileError>();
 
-    QQmlCustomParser *customParser = 0;
+    QQmlCustomParser *customParser = nullptr;
     if (auto typeRef = resolvedTypes.value(obj->inheritedTypeNameIndex)) {
         if (typeRef->type.isValid())
             customParser = typeRef->type.customParser();
@@ -124,7 +124,7 @@ QVector<QQmlCompileError> QQmlPropertyValidator::validateObject(int objectIndex,
     QmlIR::PropertyResolver propertyResolver(propertyCache);
 
     QString defaultPropertyName;
-    QQmlPropertyData *defaultProperty = 0;
+    QQmlPropertyData *defaultProperty = nullptr;
     if (obj->indexOfDefaultPropertyOrAlias != -1) {
         QQmlPropertyCache *cache = propertyCache->parent();
         defaultPropertyName = cache->defaultPropertyName();
@@ -157,7 +157,7 @@ QVector<QQmlCompileError> QQmlPropertyValidator::validateObject(int objectIndex,
         bool isGroupProperty = instantiatingBinding && instantiatingBinding->type == QV4::CompiledData::Binding::Type_GroupProperty;
 
         bool notInRevision = false;
-        QQmlPropertyData *pd = 0;
+        QQmlPropertyData *pd = nullptr;
         if (!name.isEmpty()) {
             if (binding->flags & QV4::CompiledData::Binding::IsSignalHandlerExpression
                 || binding->flags & QV4::CompiledData::Binding::IsSignalHandlerObject)
@@ -188,8 +188,8 @@ QVector<QQmlCompileError> QQmlPropertyValidator::validateObject(int objectIndex,
 
         if (name.constData()->isUpper() && !binding->isAttachedProperty()) {
             QQmlType type;
-            QQmlImportNamespace *typeNamespace = 0;
-            imports.resolveType(stringAt(binding->propertyNameIndex), &type, 0, 0, &typeNamespace);
+            QQmlImportNamespace *typeNamespace = nullptr;
+            imports.resolveType(stringAt(binding->propertyNameIndex), &type, nullptr, nullptr, &typeNamespace);
             if (typeNamespace)
                 return recordError(binding->location, tr("Invalid use of namespace"));
             return recordError(binding->location, tr("Invalid attached object assignment"));
@@ -306,9 +306,9 @@ QVector<QQmlCompileError> QQmlPropertyValidator::validateObject(int objectIndex,
         customParser->engine = enginePrivate;
         customParser->imports = &imports;
         customParser->verifyBindings(qmlUnit, customBindings);
-        customParser->validator = 0;
-        customParser->engine = 0;
-        customParser->imports = (QQmlImports*)0;
+        customParser->validator = nullptr;
+        customParser->engine = nullptr;
+        customParser->imports = (QQmlImports*)nullptr;
         QVector<QQmlCompileError> parserErrors = customParser->errors();
         if (!parserErrors.isEmpty())
             return parserErrors;
diff --git a/src/qml/compiler/qqmltypecompiler.cpp b/src/qml/compiler/qqmltypecompiler.cpp
index ac373aafb4..3415e1c073 100644
--- a/src/qml/compiler/qqmltypecompiler.cpp
+++ b/src/qml/compiler/qqmltypecompiler.cpp
@@ -332,7 +332,7 @@ bool SignalHandlerConverter::convertSignalHandlerExpressionsToFunctionDeclaratio
             auto *typeRef = resolvedTypes.value(binding->propertyNameIndex);
             QQmlType type = typeRef ? typeRef->type : QQmlType();
             if (!type.isValid()) {
-                if (imports->resolveType(propertyName, &type, 0, 0, 0)) {
+                if (imports->resolveType(propertyName, &type, nullptr, nullptr, nullptr)) {
                     if (type.isComposite()) {
                         QQmlTypeData *tdata = enginePrivate->typeLoader.getType(type.sourceUrl());
                         Q_ASSERT(tdata);
@@ -397,7 +397,7 @@ bool SignalHandlerConverter::convertSignalHandlerExpressionsToFunctionDeclaratio
         } else {
             if (notInRevision) {
                 // Try assinging it as a property later
-                if (resolver.property(propertyName, /*notInRevision ptr*/0))
+                if (resolver.property(propertyName, /*notInRevision ptr*/nullptr))
                     continue;
 
                 const QString &originalPropertyName = stringAt(binding->propertyNameIndex);
@@ -457,7 +457,7 @@ bool SignalHandlerConverter::convertSignalHandlerExpressionsToFunctionDeclaratio
 
         QQmlJS::MemoryPool *pool = compiler->memoryPool();
 
-        QQmlJS::AST::FormalParameterList *paramList = 0;
+        QQmlJS::AST::FormalParameterList *paramList = nullptr;
         for (const QString &param : qAsConst(parameters)) {
             QStringRef paramNameRef = compiler->newStringRef(param);
 
@@ -471,7 +471,7 @@ bool SignalHandlerConverter::convertSignalHandlerExpressionsToFunctionDeclaratio
             paramList = paramList->finish();
 
         QmlIR::CompiledFunctionOrExpression *foe = obj->functionsAndExpressions->slowAt(binding->value.compiledScriptIndex);
-        QQmlJS::AST::FunctionDeclaration *functionDeclaration = 0;
+        QQmlJS::AST::FunctionDeclaration *functionDeclaration = nullptr;
         if (QQmlJS::AST::ExpressionStatement *es = QQmlJS::AST::cast<QQmlJS::AST::ExpressionStatement*>(foe->node)) {
             if (QQmlJS::AST::FunctionExpression *fe = QQmlJS::AST::cast<QQmlJS::AST::FunctionExpression*>(es->expression)) {
                 functionDeclaration = new (pool) QQmlJS::AST::FunctionDeclaration(fe->name, fe->formals, fe->body);
@@ -611,7 +611,7 @@ bool QQmlEnumTypeResolver::tryQualifiedEnumAssignment(const QmlIR::Object *obj,
         return true;
     }
     QQmlType type;
-    imports->resolveType(typeName, &type, 0, 0, 0);
+    imports->resolveType(typeName, &type, nullptr, nullptr, nullptr);
 
     if (!type.isValid() && !isQtObject)
         return true;
@@ -663,7 +663,7 @@ int QQmlEnumTypeResolver::evaluateEnum(const QString &scope, const QStringRef &e
 
     if (scope != QLatin1String("Qt")) {
         QQmlType type;
-        imports->resolveType(scope, &type, 0, 0, 0);
+        imports->resolveType(scope, &type, nullptr, nullptr, nullptr);
         if (!type.isValid())
             return -1;
         if (!enumName.isEmpty())
@@ -814,7 +814,7 @@ void QQmlComponentAndAliasResolver::findAndRegisterImplicitComponents(const QmlI
                 continue;
         }
 
-        QQmlPropertyData *pd = 0;
+        QQmlPropertyData *pd = nullptr;
         if (binding->propertyNameIndex != quint32(0)) {
             bool notInRevision = false;
             pd = propertyResolver.property(stringAt(binding->propertyNameIndex), &notInRevision);
@@ -825,7 +825,7 @@ void QQmlComponentAndAliasResolver::findAndRegisterImplicitComponents(const QmlI
             continue;
 
         QQmlPropertyCache *pc = enginePrivate->rawPropertyCacheForType(pd->propType(), pd->typeMinorVersion());
-        const QMetaObject *mo = pc ? pc->firstCppMetaObject() : 0;
+        const QMetaObject *mo = pc ? pc->firstCppMetaObject() : nullptr;
         while (mo) {
             if (mo == &QQmlComponent::staticMetaObject)
                 break;
@@ -1204,7 +1204,7 @@ bool QQmlDeferredAndCustomParserBindingScanner::scanObject(int objectIndex)
         return true;
 
     QString defaultPropertyName;
-    QQmlPropertyData *defaultProperty = 0;
+    QQmlPropertyData *defaultProperty = nullptr;
     if (obj->indexOfDefaultPropertyOrAlias != -1) {
         QQmlPropertyCache *cache = propertyCache->parent();
         defaultPropertyName = cache->defaultPropertyName();
@@ -1229,7 +1229,7 @@ bool QQmlDeferredAndCustomParserBindingScanner::scanObject(int objectIndex)
     }
 
     for (QmlIR::Binding *binding = obj->firstBinding(); binding; binding = binding->next) {
-        QQmlPropertyData *pd = 0;
+        QQmlPropertyData *pd = nullptr;
         QString name = stringAt(binding->propertyNameIndex);
 
         if (customParser) {
@@ -1334,7 +1334,7 @@ bool QQmlJSCodeGenerator::compileComponent(int contextObject)
 
         auto *tref = resolvedTypes.value(obj->inheritedTypeNameIndex);
         if (tref && tref->isFullyDynamicType)
-            m.type = 0;
+            m.type = nullptr;
 
         idMapping << m;
     }
@@ -1412,10 +1412,10 @@ void QQmlDefaultPropertyMerger::mergeDefaultProperties(int objectIndex)
     QmlIR::Object *object = qmlObjects.at(objectIndex);
 
     QString defaultProperty = object->indexOfDefaultPropertyOrAlias != -1 ? propertyCache->parent()->defaultPropertyName() : propertyCache->defaultPropertyName();
-    QmlIR::Binding *bindingsToReinsert = 0;
-    QmlIR::Binding *tail = 0;
+    QmlIR::Binding *bindingsToReinsert = nullptr;
+    QmlIR::Binding *tail = nullptr;
 
-    QmlIR::Binding *previousBinding = 0;
+    QmlIR::Binding *previousBinding = nullptr;
     QmlIR::Binding *binding = object->firstBinding();
     while (binding) {
         if (binding->propertyNameIndex == quint32(0) || stringAt(binding->propertyNameIndex) != defaultProperty) {
@@ -1434,7 +1434,7 @@ void QQmlDefaultPropertyMerger::mergeDefaultProperties(int objectIndex)
             tail->next = toReinsert;
             tail = tail->next;
         }
-        tail->next = 0;
+        tail->next = nullptr;
     }
 
     binding = bindingsToReinsert;
diff --git a/src/qml/compiler/qv4bytecodegenerator_p.h b/src/qml/compiler/qv4bytecodegenerator_p.h
index 3d516da922..3b3c766bfe 100644
--- a/src/qml/compiler/qv4bytecodegenerator_p.h
+++ b/src/qml/compiler/qv4bytecodegenerator_p.h
@@ -94,7 +94,7 @@ public:
             generator->labels[index] = generator->instructions.size();
         }
 
-        BytecodeGenerator *generator = 0;
+        BytecodeGenerator *generator = nullptr;
         int index = -1;
     };
 
diff --git a/src/qml/compiler/qv4codegen.cpp b/src/qml/compiler/qv4codegen.cpp
index f236683506..eb5772e1bc 100644
--- a/src/qml/compiler/qv4codegen.cpp
+++ b/src/qml/compiler/qv4codegen.cpp
@@ -89,10 +89,10 @@ static inline void setJumpOutLocation(QV4::Moth::BytecodeGenerator *bytecodeGene
 }
 
 Codegen::Codegen(QV4::Compiler::JSUnitGenerator *jsUnitGenerator, bool strict)
-    : _module(0)
+    : _module(nullptr)
     , _returnAddress(0)
-    , _context(0)
-    , _labelledStatement(0)
+    , _context(nullptr)
+    , _labelledStatement(nullptr)
     , jsUnitGenerator(jsUnitGenerator)
     , _strictMode(strict)
     , _fileNameIsUrl(false)
@@ -111,7 +111,7 @@ void Codegen::generateFromProgram(const QString &fileName,
     Q_ASSERT(node);
 
     _module = module;
-    _context = 0;
+    _context = nullptr;
 
     // ### should be set on the module outside of this method
     _module->fileName = fileName;
@@ -120,7 +120,7 @@ void Codegen::generateFromProgram(const QString &fileName,
     ScanFunctions scan(this, sourceCode, mode);
     scan(node);
 
-    defineFunction(QStringLiteral("%entry"), node, 0, node->elements);
+    defineFunction(QStringLiteral("%entry"), node, nullptr, node->elements);
 }
 
 void Codegen::enterContext(Node *node)
@@ -635,14 +635,14 @@ bool Codegen::visit(ArrayLiteral *ast)
     for (ElementList *it = ast->elements; it; it = it->next) {
 
         for (Elision *elision = it->elision; elision; elision = elision->next)
-            push(0);
+            push(nullptr);
 
         push(it->expression);
         if (hasError)
             return false;
     }
     for (Elision *elision = ast->elision; elision; elision = elision->next)
-        push(0);
+        push(nullptr);
 
     if (args == -1) {
         Q_ASSERT(argc == 0);
@@ -1496,7 +1496,7 @@ bool Codegen::visit(FunctionExpression *ast)
 
     RegisterScope scope(this);
 
-    int function = defineFunction(ast->name.toString(), ast, ast->formals, ast->body ? ast->body->elements : 0);
+    int function = defineFunction(ast->name.toString(), ast, ast->formals, ast->body ? ast->body->elements : nullptr);
     loadClosure(function);
     _expr.setResult(Reference::fromAccumulator(this));
     return false;
@@ -1720,7 +1720,7 @@ bool Codegen::visit(ObjectLiteral *ast)
 
             v.rvalue = value.storeOnStack();
         } else if (PropertyGetterSetter *gs = AST::cast<AST::PropertyGetterSetter *>(it->assignment)) {
-            const int function = defineFunction(name, gs, gs->formals, gs->functionBody ? gs->functionBody->elements : 0);
+            const int function = defineFunction(name, gs, gs->formals, gs->functionBody ? gs->functionBody->elements : nullptr);
             ObjectPropertyValue &v = valueMap[name];
             if (v.rvalue.isValid() ||
                 (gs->type == PropertyGetterSetter::Getter && v.hasGetter()) ||
@@ -2142,7 +2142,7 @@ int Codegen::defineFunction(const QString &name, AST::Node *ast,
     for (const Context::Member &member : qAsConst(_context->members)) {
         if (member.function) {
             const int function = defineFunction(member.function->name.toString(), member.function, member.function->formals,
-                                                member.function->body ? member.function->body->elements : 0);
+                                                member.function->body ? member.function->body->elements : nullptr);
             loadClosure(function);
             if (! _context->parent) {
                 Reference::fromName(this, member.function->name.toString()).storeConsumeAccumulator();
diff --git a/src/qml/compiler/qv4codegen_p.h b/src/qml/compiler/qv4codegen_p.h
index e52f63e1f4..27c8e96e16 100644
--- a/src/qml/compiler/qv4codegen_p.h
+++ b/src/qml/compiler/qv4codegen_p.h
@@ -423,8 +423,8 @@ protected:
         }
 
         explicit Result(Format requested = ex)
-            : _iftrue(0)
-            , _iffalse(0)
+            : _iftrue(nullptr)
+            , _iffalse(nullptr)
             , _format(ex)
             , _requested(requested) {}
 
@@ -671,7 +671,7 @@ protected:
     Context *_context;
     AST::LabelledStatement *_labelledStatement;
     QV4::Compiler::JSUnitGenerator *jsUnitGenerator;
-    BytecodeGenerator *bytecodeGenerator = 0;
+    BytecodeGenerator *bytecodeGenerator = nullptr;
     bool _strictMode;
     bool useFastLookups = true;
     bool requiresReturnValue = false;
diff --git a/src/qml/compiler/qv4compileddata.cpp b/src/qml/compiler/qv4compileddata.cpp
index 05869c3287..cc11b250f3 100644
--- a/src/qml/compiler/qv4compileddata.cpp
+++ b/src/qml/compiler/qv4compileddata.cpp
@@ -109,7 +109,7 @@ CompilationUnit::~CompilationUnit()
     unlink();
     if (data && !(data->flags & QV4::CompiledData::Unit::StaticData))
         free(const_cast<Unit *>(data));
-    data = 0;
+    data = nullptr;
 }
 
 QV4::Function *CompilationUnit::linkToEngine(ExecutionEngine *engine)
@@ -201,7 +201,7 @@ QV4::Function *CompilationUnit::linkToEngine(ExecutionEngine *engine)
     if (data->indexOfRootFunction != -1)
         return runtimeFunctions[data->indexOfRootFunction];
     else
-        return 0;
+        return nullptr;
 }
 
 void CompilationUnit::unlink()
@@ -228,16 +228,16 @@ void CompilationUnit::unlink()
     qDeleteAll(resolvedTypes);
     resolvedTypes.clear();
 
-    engine = 0;
-    qmlEngine = 0;
+    engine = nullptr;
+    qmlEngine = nullptr;
     free(runtimeStrings);
-    runtimeStrings = 0;
+    runtimeStrings = nullptr;
     delete [] runtimeLookups;
-    runtimeLookups = 0;
+    runtimeLookups = nullptr;
     delete [] runtimeRegularExpressions;
-    runtimeRegularExpressions = 0;
+    runtimeRegularExpressions = nullptr;
     free(runtimeClasses);
-    runtimeClasses = 0;
+    runtimeClasses = nullptr;
     qDeleteAll(runtimeFunctions);
     runtimeFunctions.clear();
 #if Q_BYTE_ORDER == Q_BIG_ENDIAN
@@ -676,7 +676,7 @@ bool qtTypeInherits(const QMetaObject *mo) {
 
 void ResolvedTypeReference::doDynamicTypeCheck()
 {
-    const QMetaObject *mo = 0;
+    const QMetaObject *mo = nullptr;
     if (typePropertyCache)
         mo = typePropertyCache->firstCppMetaObject();
     else if (type.isValid())
diff --git a/src/qml/compiler/qv4compilercontext_p.h b/src/qml/compiler/qv4compilercontext_p.h
index bd68ea513e..d375942d0e 100644
--- a/src/qml/compiler/qv4compilercontext_p.h
+++ b/src/qml/compiler/qv4compilercontext_p.h
@@ -120,7 +120,7 @@ struct Context {
         int index = -1;
         QQmlJS::AST::VariableDeclaration::VariableScope scope = QQmlJS::AST::VariableDeclaration::FunctionScope;
         mutable bool canEscape = false;
-        QQmlJS::AST::FunctionExpression *function = 0;
+        QQmlJS::AST::FunctionExpression *function = nullptr;
 
         bool isLexicallyScoped() const { return this->scope != QQmlJS::AST::VariableDeclaration::FunctionScope; }
     };
@@ -128,12 +128,12 @@ struct Context {
 
     MemberMap members;
     QSet<QString> usedVariables;
-    QQmlJS::AST::FormalParameterList *formals = 0;
+    QQmlJS::AST::FormalParameterList *formals = nullptr;
     QStringList arguments;
     QStringList locals;
     QVector<Context *> nestedContexts;
 
-    ControlFlow *controlFlow = 0;
+    ControlFlow *controlFlow = nullptr;
     QByteArray code;
     QVector<CompiledData::CodeOffsetToLine> lineNumberMapping;
 
@@ -245,7 +245,7 @@ struct Context {
         Q_ASSERT(m);
         MemberMap::const_iterator it = members.find(name);
         if (it == members.end()) {
-            *m = 0;
+            *m = nullptr;
             return false;
         }
         *m = &(*it);
@@ -256,7 +256,7 @@ struct Context {
         usedVariables.insert(name);
     }
 
-    void addLocalVar(const QString &name, MemberType type, QQmlJS::AST::VariableDeclaration::VariableScope scope, QQmlJS::AST::FunctionExpression *function = 0)
+    void addLocalVar(const QString &name, MemberType type, QQmlJS::AST::VariableDeclaration::VariableScope scope, QQmlJS::AST::FunctionExpression *function = nullptr)
     {
         if (! name.isEmpty()) {
             if (type != FunctionDefinition) {
diff --git a/src/qml/compiler/qv4compilercontrolflow_p.h b/src/qml/compiler/qv4compilercontrolflow_p.h
index 13716fe29f..9bda20905a 100644
--- a/src/qml/compiler/qv4compilercontrolflow_p.h
+++ b/src/qml/compiler/qv4compilercontrolflow_p.h
@@ -159,7 +159,7 @@ struct ControlFlow {
     virtual Handler getHandler(HandlerType type, const QString &label = QString()) = 0;
 
     BytecodeGenerator::ExceptionHandler *parentExceptionHandler() {
-        return parent ? parent->exceptionHandler() : 0;
+        return parent ? parent->exceptionHandler() : nullptr;
     }
 
     virtual BytecodeGenerator::ExceptionHandler *exceptionHandler() {
@@ -184,7 +184,7 @@ protected:
         QString label;
         if (cg->_labelledStatement) {
             label = cg->_labelledStatement->label.toString();
-            cg->_labelledStatement = 0;
+            cg->_labelledStatement = nullptr;
         }
         return label;
     }
@@ -196,10 +196,10 @@ protected:
 struct ControlFlowLoop : public ControlFlow
 {
     QString loopLabel;
-    BytecodeGenerator::Label *breakLabel = 0;
-    BytecodeGenerator::Label *continueLabel = 0;
+    BytecodeGenerator::Label *breakLabel = nullptr;
+    BytecodeGenerator::Label *continueLabel = nullptr;
 
-    ControlFlowLoop(Codegen *cg, BytecodeGenerator::Label *breakLabel, BytecodeGenerator::Label *continueLabel = 0)
+    ControlFlowLoop(Codegen *cg, BytecodeGenerator::Label *breakLabel, BytecodeGenerator::Label *continueLabel = nullptr)
         : ControlFlow(cg, Loop), loopLabel(ControlFlow::loopLabel()), breakLabel(breakLabel), continueLabel(continueLabel)
     {
     }
@@ -407,7 +407,7 @@ struct ControlFlowFinally : public ControlFlowUnwind
     ControlFlowFinally(Codegen *cg, AST::Finally *finally)
         : ControlFlowUnwind(cg, Finally), finally(finally)
     {
-        Q_ASSERT(finally != 0);
+        Q_ASSERT(finally != nullptr);
         generator()->setExceptionHandler(&unwindLabel);
     }
 
diff --git a/src/qml/compiler/qv4compilerscanfunctions.cpp b/src/qml/compiler/qv4compilerscanfunctions.cpp
index 808e79959d..89f602b409 100644
--- a/src/qml/compiler/qv4compilerscanfunctions.cpp
+++ b/src/qml/compiler/qv4compilerscanfunctions.cpp
@@ -59,7 +59,7 @@ using namespace QQmlJS::AST;
 ScanFunctions::ScanFunctions(Codegen *cg, const QString &sourceCode, CompilationMode defaultProgramMode)
     : _cg(cg)
     , _sourceCode(sourceCode)
-    , _context(0)
+    , _context(nullptr)
     , _allowFuncDecls(true)
     , defaultProgramMode(defaultProgramMode)
 {
@@ -208,7 +208,7 @@ bool ScanFunctions::visit(VariableDeclaration *ast)
         return false;
     }
     QString name = ast->name.toString();
-    const Context::Member *m = 0;
+    const Context::Member *m = nullptr;
     if (_context->memberInfo(name, &m)) {
         if (m->isLexicallyScoped() || ast->isLexicallyScoped()) {
             _cg->throwSyntaxError(ast->identifierToken, QStringLiteral("Identifier %1 has already been declared").arg(name));
@@ -258,7 +258,7 @@ void ScanFunctions::enterFunction(FunctionExpression *ast, bool enterName)
 {
     if (_context->isStrict && (ast->name == QLatin1String("eval") || ast->name == QLatin1String("arguments")))
         _cg->throwSyntaxError(ast->identifierToken, QStringLiteral("Function name may not be eval or arguments in strict mode"));
-    enterFunction(ast, ast->name.toString(), ast->formals, ast->body, enterName ? ast : 0);
+    enterFunction(ast, ast->name.toString(), ast->formals, ast->body, enterName ? ast : nullptr);
 }
 
 void ScanFunctions::endVisit(FunctionExpression *)
@@ -287,7 +287,7 @@ bool ScanFunctions::visit(ObjectLiteral *ast)
 bool ScanFunctions::visit(PropertyGetterSetter *ast)
 {
     TemporaryBoolAssignment allowFuncDecls(_allowFuncDecls, true);
-    enterFunction(ast, QString(), ast->formals, ast->functionBody, /*FunctionExpression*/0);
+    enterFunction(ast, QString(), ast->formals, ast->functionBody, /*FunctionExpression*/nullptr);
     return true;
 }
 
diff --git a/src/qml/compiler/qv4compilerscanfunctions_p.h b/src/qml/compiler/qv4compilerscanfunctions_p.h
index 526278fdd8..745e9f8a73 100644
--- a/src/qml/compiler/qv4compilerscanfunctions_p.h
+++ b/src/qml/compiler/qv4compilerscanfunctions_p.h
@@ -88,7 +88,7 @@ public:
     void leaveEnvironment();
 
     void enterQmlScope(AST::Node *ast, const QString &name)
-    { enterFunction(ast, name, /*formals*/0, /*body*/0, /*expr*/0); }
+    { enterFunction(ast, name, /*formals*/nullptr, /*body*/nullptr, /*expr*/nullptr); }
 
     void enterQmlFunction(AST::FunctionDeclaration *ast)
     { enterFunction(ast, false); }
diff --git a/src/qml/debugger/qqmlabstractprofileradapter_p.h b/src/qml/debugger/qqmlabstractprofileradapter_p.h
index 5d1b339324..f86855e964 100644
--- a/src/qml/debugger/qqmlabstractprofileradapter_p.h
+++ b/src/qml/debugger/qqmlabstractprofileradapter_p.h
@@ -68,8 +68,8 @@ class Q_QML_PRIVATE_EXPORT QQmlAbstractProfilerAdapter : public QObject, public
 public:
     static const int s_numMessagesPerBatch = 1000;
 
-    QQmlAbstractProfilerAdapter(QObject *parent = 0) :
-        QObject(parent), service(0), waiting(true), featuresEnabled(0) {}
+    QQmlAbstractProfilerAdapter(QObject *parent = nullptr) :
+        QObject(parent), service(nullptr), waiting(true), featuresEnabled(0) {}
     virtual ~QQmlAbstractProfilerAdapter() {}
     void setService(QQmlProfilerService *new_service) { service = new_service; }
 
diff --git a/src/qml/debugger/qqmlconfigurabledebugservice_p.h b/src/qml/debugger/qqmlconfigurabledebugservice_p.h
index e09d5f779a..96ec46f475 100644
--- a/src/qml/debugger/qqmlconfigurabledebugservice_p.h
+++ b/src/qml/debugger/qqmlconfigurabledebugservice_p.h
@@ -63,7 +63,7 @@ template <class Base>
 class QQmlConfigurableDebugService : public Base
 {
 protected:
-    QQmlConfigurableDebugService(float version, QObject *parent = 0) :
+    QQmlConfigurableDebugService(float version, QObject *parent = nullptr) :
         Base(version, parent), m_configMutex(QMutex::Recursive)
     {
         init();
diff --git a/src/qml/debugger/qqmldebugconnector.cpp b/src/qml/debugger/qqmldebugconnector.cpp
index 01f74f08be..d9f51ce09f 100644
--- a/src/qml/debugger/qqmldebugconnector.cpp
+++ b/src/qml/debugger/qqmldebugconnector.cpp
@@ -66,7 +66,7 @@ struct QQmlDebugConnectorParams {
     QString arguments;
     QQmlDebugConnector *instance;
 
-    QQmlDebugConnectorParams() : instance(0)
+    QQmlDebugConnectorParams() : instance(nullptr)
     {
         if (qApp) {
             QCoreApplicationPrivate *appD =
@@ -109,7 +109,7 @@ QQmlDebugConnector *QQmlDebugConnector::instance()
 {
     QQmlDebugConnectorParams *params = qmlDebugConnectorParams();
     if (!params)
-        return 0;
+        return nullptr;
 
     if (!QQmlEnginePrivate::qml_debugging_enabled) {
         if (!params->arguments.isEmpty()) {
@@ -118,14 +118,14 @@ QQmlDebugConnector *QQmlDebugConnector::instance()
                                         "has not been enabled.").arg(params->arguments);
             params->arguments.clear();
         }
-        return 0;
+        return nullptr;
     }
 
     if (!params->instance) {
         if (!params->pluginKey.isEmpty()) {
             params->instance = loadQQmlDebugConnector(params->pluginKey);
         } else if (params->arguments.isEmpty()) {
-            return 0; // no explicit class name given and no command line arguments
+            return nullptr; // no explicit class name given and no command line arguments
         } else if (params->arguments.startsWith(QLatin1String("connector:"))) {
             static const int connectorBegin = int(strlen("connector:"));
 
@@ -169,7 +169,7 @@ QQmlDebugConnectorFactory::~QQmlDebugConnectorFactory()
         params->arguments.clear();
         params->services.clear();
         delete params->instance;
-        params->instance = 0;
+        params->instance = nullptr;
     }
 }
 
diff --git a/src/qml/debugger/qqmldebugconnector_p.h b/src/qml/debugger/qqmldebugconnector_p.h
index a2a6f5047d..cead6af338 100644
--- a/src/qml/debugger/qqmldebugconnector_p.h
+++ b/src/qml/debugger/qqmldebugconnector_p.h
@@ -114,7 +114,7 @@ public:
     static Service *service()
     {
         QQmlDebugConnector *inst = instance();
-        return inst ? static_cast<Service *>(inst->service(Service::s_key)) : 0;
+        return inst ? static_cast<Service *>(inst->service(Service::s_key)) : nullptr;
     }
 
 protected:
diff --git a/src/qml/debugger/qqmldebugserverconnection_p.h b/src/qml/debugger/qqmldebugserverconnection_p.h
index 536ad830b4..9c4af4d225 100644
--- a/src/qml/debugger/qqmldebugserverconnection_p.h
+++ b/src/qml/debugger/qqmldebugserverconnection_p.h
@@ -61,7 +61,7 @@ class Q_QML_PRIVATE_EXPORT QQmlDebugServerConnection : public QObject
 {
     Q_OBJECT
 public:
-    QQmlDebugServerConnection(QObject *parent = 0) : QObject(parent) {}
+    QQmlDebugServerConnection(QObject *parent = nullptr) : QObject(parent) {}
 
     virtual void setServer(QQmlDebugServer *server) = 0;
     virtual bool setPortRange(int portFrom, int portTo, bool block, const QString &hostaddress) = 0;
diff --git a/src/qml/debugger/qqmldebugservice_p.h b/src/qml/debugger/qqmldebugservice_p.h
index 34bbd631ec..e9f7d2d396 100644
--- a/src/qml/debugger/qqmldebugservice_p.h
+++ b/src/qml/debugger/qqmldebugservice_p.h
@@ -93,7 +93,7 @@ public:
     static QObject *objectForId(int id) { return objectsForIds().value(id); }
 
 protected:
-    explicit QQmlDebugService(const QString &, float version, QObject *parent = 0);
+    explicit QQmlDebugService(const QString &, float version, QObject *parent = nullptr);
 
 signals:
     void attachedToEngine(QJSEngine *);
diff --git a/src/qml/debugger/qqmlprofiler_p.h b/src/qml/debugger/qqmlprofiler_p.h
index 58db26f2ac..deb4d107d6 100644
--- a/src/qml/debugger/qqmlprofiler_p.h
+++ b/src/qml/debugger/qqmlprofiler_p.h
@@ -450,7 +450,7 @@ struct QQmlCompilingProfiler : public QQmlProfilerHelper {
 struct QQmlVmeProfiler : public QQmlProfilerDefinitions {
 public:
 
-    QQmlVmeProfiler() : profiler(0) {}
+    QQmlVmeProfiler() : profiler(nullptr) {}
 
     void init(QQmlProfiler *p, int maxDepth)
     {
diff --git a/src/qml/jit/qv4assembler.cpp b/src/qml/jit/qv4assembler.cpp
index fdb795be92..186e5952da 100644
--- a/src/qml/jit/qv4assembler.cpp
+++ b/src/qml/jit/qv4assembler.cpp
@@ -1319,7 +1319,7 @@ class QIODevicePrintStream: public FilePrintStream
 
 public:
     explicit QIODevicePrintStream(QIODevice *dest)
-        : FilePrintStream(0)
+        : FilePrintStream(nullptr)
         , dest(dest)
         , buf(4096, '0')
     {
@@ -1373,7 +1373,7 @@ void Assembler::link(Function *function)
         jumpTarget.jump.linkTo(pasm()->labelsByOffset[jumpTarget.offset], pasm());
 
     JSC::JSGlobalData dummy(function->internalClass->engine->executableAllocator);
-    JSC::LinkBuffer<PlatformAssembler::MacroAssembler> linkBuffer(dummy, pasm(), 0);
+    JSC::LinkBuffer<PlatformAssembler::MacroAssembler> linkBuffer(dummy, pasm(), nullptr);
 
     for (const auto &ehTarget : pasm()->ehTargets) {
         auto targetLabel = pasm()->labelsByOffset.value(ehTarget.offset);
diff --git a/src/qml/jsapi/qjsengine.cpp b/src/qml/jsapi/qjsengine.cpp
index 1c1314f05d..c483af638b 100644
--- a/src/qml/jsapi/qjsengine.cpp
+++ b/src/qml/jsapi/qjsengine.cpp
@@ -783,7 +783,7 @@ QJSEngine *qjsEngine(const QObject *object)
 {
     QQmlData *data = QQmlData::get(object, false);
     if (!data || data->jsWrapper.isNullOrUndefined())
-        return 0;
+        return nullptr;
     return data->jsWrapper.engine()->jsEngine();
 }
 
diff --git a/src/qml/jsapi/qjsengine_p.h b/src/qml/jsapi/qjsengine_p.h
index cbfe0f14a3..1ea1d77851 100644
--- a/src/qml/jsapi/qjsengine_p.h
+++ b/src/qml/jsapi/qjsengine_p.h
@@ -163,7 +163,7 @@ QQmlPropertyCache until the QQmlEngine is destroyed.
 QQmlPropertyCache *QJSEnginePrivate::cache(QObject *obj)
 {
     if (!obj || QObjectPrivate::get(obj)->metaObject || QObjectPrivate::get(obj)->wasDeleted)
-        return 0;
+        return nullptr;
 
     Locker locker(this);
     const QMetaObject *mo = obj->metaObject();
diff --git a/src/qml/jsapi/qjsvalue.cpp b/src/qml/jsapi/qjsvalue.cpp
index c4090ac482..b97468ab7b 100644
--- a/src/qml/jsapi/qjsvalue.cpp
+++ b/src/qml/jsapi/qjsvalue.cpp
@@ -662,7 +662,7 @@ QVariant QJSValue::toVariant() const
         return QVariant(val->asDouble());
     }
     if (val->isNull())
-        return QVariant(QMetaType::Nullptr, 0);
+        return QVariant(QMetaType::Nullptr, nullptr);
     Q_ASSERT(val->isUndefined());
     return QVariant();
 }
@@ -831,7 +831,7 @@ QJSEngine* QJSValue::engine() const
     QV4::ExecutionEngine *engine = QJSValuePrivate::engine(this);
     if (engine)
         return engine->jsEngine();
-    return 0;
+    return nullptr;
 }
 
 #endif // QT_DEPRECATED
@@ -884,7 +884,7 @@ void QJSValue::setPrototype(const QJSValue& prototype)
     if (!val)
         return;
     if (val->isNull()) {
-        o->setPrototype(0);
+        o->setPrototype(nullptr);
         return;
     }
 
@@ -1308,11 +1308,11 @@ QObject *QJSValue::toQObject() const
 {
     QV4::ExecutionEngine *engine = QJSValuePrivate::engine(this);
     if (!engine)
-        return 0;
+        return nullptr;
     QV4::Scope scope(engine);
     QV4::Scoped<QV4::QObjectWrapper> wrapper(scope, QJSValuePrivate::getValue(this));
     if (!wrapper)
-        return 0;
+        return nullptr;
 
     return wrapper->object();
 }
@@ -1329,11 +1329,11 @@ const QMetaObject *QJSValue::toQMetaObject() const
 {
     QV4::ExecutionEngine *engine = QJSValuePrivate::engine(this);
     if (!engine)
-        return 0;
+        return nullptr;
     QV4::Scope scope(engine);
     QV4::Scoped<QV4::QMetaObjectWrapper> wrapper(scope, QJSValuePrivate::getValue(this));
     if (!wrapper)
-        return 0;
+        return nullptr;
 
     return wrapper->metaObject();
 }
@@ -1389,7 +1389,7 @@ bool QJSValue::isRegExp() const
 bool QJSValue::isQObject() const
 {
     QV4::Value *val = QJSValuePrivate::getValue(this);
-    return val && val->as<QV4::QObjectWrapper>() != 0;
+    return val && val->as<QV4::QObjectWrapper>() != nullptr;
 }
 
 /*!
@@ -1403,7 +1403,7 @@ bool QJSValue::isQObject() const
 bool QJSValue::isQMetaObject() const
 {
     QV4::Value *val = QJSValuePrivate::getValue(this);
-    return val && val->as<QV4::QMetaObjectWrapper>() != 0;
+    return val && val->as<QV4::QMetaObjectWrapper>() != nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/qml/jsapi/qjsvalue_p.h b/src/qml/jsapi/qjsvalue_p.h
index c4761ad6ea..62e09f72be 100644
--- a/src/qml/jsapi/qjsvalue_p.h
+++ b/src/qml/jsapi/qjsvalue_p.h
@@ -68,7 +68,7 @@ public:
     static inline QV4::Value *getValue(const QJSValue *jsval)
     {
         if (jsval->d & 3)
-            return 0;
+            return nullptr;
         return reinterpret_cast<QV4::Value *>(jsval->d);
     }
 
@@ -76,7 +76,7 @@ public:
     {
         if (jsval->d & 1)
             return reinterpret_cast<QVariant *>(jsval->d & ~3);
-        return 0;
+        return nullptr;
     }
 
     static inline void setVariant(QJSValue *jsval, const QVariant &v) {
@@ -153,14 +153,14 @@ public:
             *v = QV4::Encode(variant->toUInt());
             break;
         default:
-            return 0;
+            return nullptr;
         }
         return v;
     }
 
     static QV4::ExecutionEngine *engine(const QJSValue *jsval) {
         QV4::Value *v = getValue(jsval);
-        return v ? QV4::PersistentValueStorage::getEngine(v) : 0;
+        return v ? QV4::PersistentValueStorage::getEngine(v) : nullptr;
     }
 
     static inline bool checkEngine(QV4::ExecutionEngine *e, const QJSValue &jsval) {
diff --git a/src/qml/jsruntime/qv4arraybuffer.cpp b/src/qml/jsruntime/qv4arraybuffer.cpp
index f7b9e8acef..c4eddb6b2a 100644
--- a/src/qml/jsruntime/qv4arraybuffer.cpp
+++ b/src/qml/jsruntime/qv4arraybuffer.cpp
@@ -96,7 +96,7 @@ void Heap::ArrayBuffer::init(size_t length)
     Object::init();
     data = QTypedArrayData<char>::allocate(length + 1);
     if (!data) {
-        data = 0;
+        data = nullptr;
         internalClass->engine->throwRangeError(QStringLiteral("ArrayBuffer: out of memory"));
         return;
     }
@@ -152,7 +152,7 @@ void ArrayBufferPrototype::init(ExecutionEngine *engine, Object *ctor)
     ctor->defineReadonlyProperty(engine->id_prototype(), (o = this));
     ctor->defineDefaultProperty(QStringLiteral("isView"), ArrayBufferCtor::method_isView, 1);
     defineDefaultProperty(engine->id_constructor(), (o = ctor));
-    defineAccessorProperty(QStringLiteral("byteLength"), method_get_byteLength, 0);
+    defineAccessorProperty(QStringLiteral("byteLength"), method_get_byteLength, nullptr);
     defineDefaultProperty(QStringLiteral("slice"), method_slice, 2);
     defineDefaultProperty(QStringLiteral("toString"), method_toString, 0);
 }
diff --git a/src/qml/jsruntime/qv4arraybuffer_p.h b/src/qml/jsruntime/qv4arraybuffer_p.h
index e236a23d1f..59e78ee85f 100644
--- a/src/qml/jsruntime/qv4arraybuffer_p.h
+++ b/src/qml/jsruntime/qv4arraybuffer_p.h
@@ -93,8 +93,8 @@ struct Q_QML_PRIVATE_EXPORT ArrayBuffer : Object
 
     QByteArray asByteArray() const;
     uint byteLength() const { return d()->byteLength(); }
-    char *data() { detach(); return d()->data ? d()->data->data() : 0; }
-    const char *constData() { detach(); return d()->data ? d()->data->data() : 0; }
+    char *data() { detach(); return d()->data ? d()->data->data() : nullptr; }
+    const char *constData() { detach(); return d()->data ? d()->data->data() : nullptr; }
 
 private:
     void detach();
diff --git a/src/qml/jsruntime/qv4arraydata.cpp b/src/qml/jsruntime/qv4arraydata.cpp
index 5e971c8e9b..30c8527f21 100644
--- a/src/qml/jsruntime/qv4arraydata.cpp
+++ b/src/qml/jsruntime/qv4arraydata.cpp
@@ -50,7 +50,7 @@ using namespace QV4;
 QT_WARNING_SUPPRESS_GCC_TAUTOLOGICAL_COMPARE_ON
 
 const QV4::VTable QV4::ArrayData::static_vtbl = {
-    0,
+    nullptr,
     0,
     0,
     QV4::ArrayData::IsExecutionContext,
@@ -69,7 +69,7 @@ const QV4::VTable QV4::ArrayData::static_vtbl = {
 
 const ArrayVTable SimpleArrayData::static_vtbl =
 {
-    DEFINE_MANAGED_VTABLE_INT(SimpleArrayData, 0),
+    DEFINE_MANAGED_VTABLE_INT(SimpleArrayData, nullptr),
     Heap::ArrayData::Simple,
     SimpleArrayData::reallocate,
     SimpleArrayData::get,
@@ -85,7 +85,7 @@ const ArrayVTable SimpleArrayData::static_vtbl =
 
 const ArrayVTable SparseArrayData::static_vtbl =
 {
-    DEFINE_MANAGED_VTABLE_INT(SparseArrayData, 0),
+    DEFINE_MANAGED_VTABLE_INT(SparseArrayData, nullptr),
     Heap::ArrayData::Sparse,
     SparseArrayData::reallocate,
     SparseArrayData::get,
@@ -170,7 +170,7 @@ void ArrayData::realloc(Object *o, Type newType, uint requested, bool enforceAtt
     newData->setType(newType);
     if (d)
         newData->d()->needsMark = d->d()->needsMark;
-    newData->setAttrs(enforceAttributes ? reinterpret_cast<PropertyAttributes *>(newData->d()->values.values + alloc) : 0);
+    newData->setAttrs(enforceAttributes ? reinterpret_cast<PropertyAttributes *>(newData->d()->values.values + alloc) : nullptr);
     o->setArrayData(newData);
 
     if (d) {
@@ -203,7 +203,7 @@ void ArrayData::realloc(Object *o, Type newType, uint requested, bool enforceAtt
     if (d && d->type() == Heap::ArrayData::Sparse) {
         Heap::SparseArrayData *old = static_cast<Heap::SparseArrayData *>(d->d());
         sparse->sparse = old->sparse;
-        old->sparse = 0;
+        old->sparse = nullptr;
         lastFree = &sparse->sparse->freeList;
     } else {
         sparse->sparse = new SparseArray;
@@ -779,7 +779,7 @@ void ArrayData::sort(ExecutionEngine *engine, Object *thisObject, const Value &c
         if (!sparse->sparse()->nEntries())
             return;
 
-        thisObject->setArrayData(0);
+        thisObject->setArrayData(nullptr);
         ArrayData::realloc(thisObject, Heap::ArrayData::Simple, sparse->sparse()->nEntries(), sparse->attrs() ? true : false);
         Heap::SimpleArrayData *d = thisObject->d()->arrayData.cast<Heap::SimpleArrayData>();
 
diff --git a/src/qml/jsruntime/qv4arraydata_p.h b/src/qml/jsruntime/qv4arraydata_p.h
index d6549e44ee..9356670b6d 100644
--- a/src/qml/jsruntime/qv4arraydata_p.h
+++ b/src/qml/jsruntime/qv4arraydata_p.h
@@ -331,7 +331,7 @@ ArrayData::Index ArrayData::getValueOrSetter(uint index, PropertyAttributes *att
     uint idx = mappedIndex(index);
     if (idx == UINT_MAX) {
         *attrs = Attr_Invalid;
-        return { 0, 0 };
+        return { nullptr, 0 };
     }
 
     *attrs = attributes(index);
diff --git a/src/qml/jsruntime/qv4context.cpp b/src/qml/jsruntime/qv4context.cpp
index 00d816fe91..020e519e74 100644
--- a/src/qml/jsruntime/qv4context.cpp
+++ b/src/qml/jsruntime/qv4context.cpp
@@ -302,7 +302,7 @@ ReturnedValue ExecutionContext::getProperty(String *name)
 
 ReturnedValue ExecutionContext::getPropertyAndBase(String *name, Value *base)
 {
-    base->setM(0);
+    base->setM(nullptr);
     name->makeIdentifier();
 
     Heap::ExecutionContext *ctx = d();
diff --git a/src/qml/jsruntime/qv4context_p.h b/src/qml/jsruntime/qv4context_p.h
index dfac5534be..512bfa06d8 100644
--- a/src/qml/jsruntime/qv4context_p.h
+++ b/src/qml/jsruntime/qv4context_p.h
@@ -246,12 +246,12 @@ struct CatchContext : public ExecutionContext
 
 inline CallContext *ExecutionContext::asCallContext()
 {
-    return d()->type == Heap::ExecutionContext::Type_CallContext ? static_cast<CallContext *>(this) : 0;
+    return d()->type == Heap::ExecutionContext::Type_CallContext ? static_cast<CallContext *>(this) : nullptr;
 }
 
 inline const CallContext *ExecutionContext::asCallContext() const
 {
-    return d()->type == Heap::ExecutionContext::Type_CallContext ? static_cast<const CallContext *>(this) : 0;
+    return d()->type == Heap::ExecutionContext::Type_CallContext ? static_cast<const CallContext *>(this) : nullptr;
 }
 
 } // namespace QV4
diff --git a/src/qml/jsruntime/qv4dataview.cpp b/src/qml/jsruntime/qv4dataview.cpp
index 397ef1cfec..d894d909ff 100644
--- a/src/qml/jsruntime/qv4dataview.cpp
+++ b/src/qml/jsruntime/qv4dataview.cpp
@@ -88,9 +88,9 @@ void DataViewPrototype::init(ExecutionEngine *engine, Object *ctor)
     ctor->defineReadonlyProperty(engine->id_length(), Primitive::fromInt32(3));
     ctor->defineReadonlyProperty(engine->id_prototype(), (o = this));
     defineDefaultProperty(engine->id_constructor(), (o = ctor));
-    defineAccessorProperty(QStringLiteral("buffer"), method_get_buffer, 0);
-    defineAccessorProperty(QStringLiteral("byteLength"), method_get_byteLength, 0);
-    defineAccessorProperty(QStringLiteral("byteOffset"), method_get_byteOffset, 0);
+    defineAccessorProperty(QStringLiteral("buffer"), method_get_buffer, nullptr);
+    defineAccessorProperty(QStringLiteral("byteLength"), method_get_byteLength, nullptr);
+    defineAccessorProperty(QStringLiteral("byteOffset"), method_get_byteOffset, nullptr);
 
     defineDefaultProperty(QStringLiteral("getInt8"), method_getChar<signed char>, 0);
     defineDefaultProperty(QStringLiteral("getUint8"), method_getChar<unsigned char>, 0);
diff --git a/src/qml/jsruntime/qv4dateobject_p.h b/src/qml/jsruntime/qv4dateobject_p.h
index a4ab0a27ed..2b9a580288 100644
--- a/src/qml/jsruntime/qv4dateobject_p.h
+++ b/src/qml/jsruntime/qv4dateobject_p.h
@@ -101,7 +101,7 @@ struct DateObject: Object {
 
 template<>
 inline const DateObject *Value::as() const {
-    return isManaged() && m()->vtable()->type == Managed::Type_DateObject ? static_cast<const DateObject *>(this) : 0;
+    return isManaged() && m()->vtable()->type == Managed::Type_DateObject ? static_cast<const DateObject *>(this) : nullptr;
 }
 
 struct DateCtor: FunctionObject
diff --git a/src/qml/jsruntime/qv4engine.cpp b/src/qml/jsruntime/qv4engine.cpp
index 4b5aadbdcf..168a2ea9d4 100644
--- a/src/qml/jsruntime/qv4engine.cpp
+++ b/src/qml/jsruntime/qv4engine.cpp
@@ -127,13 +127,13 @@ ExecutionEngine::ExecutionEngine()
     , bumperPointerAllocator(new WTF::BumpPointerAllocator)
     , jsStack(new WTF::PageAllocation)
     , gcStack(new WTF::PageAllocation)
-    , globalCode(0)
-    , v8Engine(0)
-    , argumentsAccessors(0)
+    , globalCode(nullptr)
+    , v8Engine(nullptr)
+    , argumentsAccessors(nullptr)
     , nArgumentsAccessors(0)
     , m_engineId(engineSerial.fetchAndAddOrdered(1))
-    , regExpCache(0)
-    , m_multiplyWrappedQObjects(0)
+    , regExpCache(nullptr)
+    , m_multiplyWrappedQObjects(nullptr)
 #if defined(V4_ENABLE_JIT) && !defined(V4_BOOTSTRAP)
     , m_canAllocateExecutableMemory(OSAllocator::canAllocateExecutableMemory())
 #endif
@@ -314,7 +314,7 @@ ExecutionEngine::ExecutionEngine()
     internalClasses[EngineBase::Class_RegExpExecArray] = ic->addMember(id_input(), Attr_Data, &index);
     Q_ASSERT(index == RegExpObject::Index_ArrayInput);
 
-    ic = newInternalClass(ErrorObject::staticVTable(), 0);
+    ic = newInternalClass(ErrorObject::staticVTable(), nullptr);
     ic = ic->addMember((str = newIdentifier(QStringLiteral("stack"))), Attr_Accessor|Attr_NotConfigurable|Attr_NotEnumerable, &index);
     Q_ASSERT(index == ErrorObject::Index_Stack);
     ic = ic->addMember((str = newIdentifier(QStringLiteral("fileName"))), Attr_Data|Attr_NotEnumerable, &index);
@@ -396,8 +396,8 @@ ExecutionEngine::ExecutionEngine()
     jsObjects[DataView_Ctor] = memoryManager->allocObject<DataViewCtor>(global);
     jsObjects[DataViewProto] = memoryManager->allocObject<DataViewPrototype>();
     static_cast<DataViewPrototype *>(dataViewPrototype())->init(this, dataViewCtor());
-    jsObjects[ValueTypeProto] = (Heap::Base *) 0;
-    jsObjects[SignalHandlerProto] = (Heap::Base *) 0;
+    jsObjects[ValueTypeProto] = (Heap::Base *) nullptr;
+    jsObjects[SignalHandlerProto] = (Heap::Base *) nullptr;
 
     for (int i = 0; i < Heap::TypedArray::NTypes; ++i) {
         static_cast<Value &>(typedArrayCtors[i]) = memoryManager->allocObject<TypedArrayCtor>(global, Heap::TypedArray::Type(i));
@@ -480,7 +480,7 @@ ExecutionEngine::ExecutionEngine()
 ExecutionEngine::~ExecutionEngine()
 {
     delete m_multiplyWrappedQObjects;
-    m_multiplyWrappedQObjects = 0;
+    m_multiplyWrappedQObjects = nullptr;
     delete identifierTable;
     delete memoryManager;
 
@@ -531,7 +531,7 @@ InternalClass *ExecutionEngine::newClass(const InternalClass &other)
 
 InternalClass *ExecutionEngine::newInternalClass(const VTable *vtable, Object *prototype)
 {
-    return internalClasses[EngineBase::Class_Empty]->changeVTable(vtable)->changePrototype(prototype ? prototype->d() : 0);
+    return internalClasses[EngineBase::Class_Empty]->changeVTable(vtable)->changePrototype(prototype ? prototype->d() : nullptr);
 }
 
 Heap::Object *ExecutionEngine::newObject()
@@ -733,18 +733,18 @@ Heap::Object *ExecutionEngine::newForEachIteratorObject(Object *o)
 Heap::QmlContext *ExecutionEngine::qmlContext() const
 {
     if (!currentStackFrame)
-        return 0;
+        return nullptr;
     Heap::ExecutionContext *ctx = currentContext()->d();
 
     if (ctx->type != Heap::ExecutionContext::Type_QmlContext && !ctx->outer)
-        return 0;
+        return nullptr;
 
     while (ctx->outer && ctx->outer->type != Heap::ExecutionContext::Type_GlobalContext)
         ctx = ctx->outer;
 
     Q_ASSERT(ctx);
     if (ctx->type != Heap::ExecutionContext::Type_QmlContext)
-        return 0;
+        return nullptr;
 
     return static_cast<Heap::QmlContext *>(ctx);
 }
@@ -753,7 +753,7 @@ QObject *ExecutionEngine::qmlScopeObject() const
 {
     Heap::QmlContext *ctx = qmlContext();
     if (!ctx)
-        return 0;
+        return nullptr;
 
     return ctx->qml()->scopeObject;
 }
@@ -783,7 +783,7 @@ QQmlContextData *ExecutionEngine::callingQmlContext() const
 {
     Heap::QmlContext *ctx = qmlContext();
     if (!ctx)
-        return 0;
+        return nullptr;
 
     return ctx->qml()->context->contextData();
 }
@@ -1091,7 +1091,7 @@ QQmlError ExecutionEngine::catchExceptionAsQmlError()
 typedef QSet<QV4::Heap::Object *> V4ObjectSet;
 static QVariant toVariant(QV4::ExecutionEngine *e, const QV4::Value &value, int typeHint, bool createJSValueForObjects, V4ObjectSet *visitedObjects);
 static QObject *qtObjectFromJS(QV4::ExecutionEngine *engine, const QV4::Value &value);
-static QVariant objectToVariant(QV4::ExecutionEngine *e, const QV4::Object *o, V4ObjectSet *visitedObjects = 0);
+static QVariant objectToVariant(QV4::ExecutionEngine *e, const QV4::Object *o, V4ObjectSet *visitedObjects = nullptr);
 static bool convertToNativeQObject(QV4::ExecutionEngine *e, const QV4::Value &value,
                             const QByteArray &targetType,
                             void **result);
@@ -1105,7 +1105,7 @@ static QV4::ReturnedValue variantToJS(QV4::ExecutionEngine *v4, const QVariant &
 
 QVariant ExecutionEngine::toVariant(const Value &value, int typeHint, bool createJSValueForObjects)
 {
-    return ::toVariant(this, value, typeHint, createJSValueForObjects, 0);
+    return ::toVariant(this, value, typeHint, createJSValueForObjects, nullptr);
 }
 
 
@@ -1469,7 +1469,7 @@ static QV4::ReturnedValue variantMapToJS(QV4::ExecutionEngine *v4, const QVarian
 // Returns the value if conversion succeeded, an empty handle otherwise.
 QV4::ReturnedValue ExecutionEngine::metaTypeToJS(int type, const void *data)
 {
-    Q_ASSERT(data != 0);
+    Q_ASSERT(data != nullptr);
 
     // check if it's one of the types we know
     switch (QMetaType::Type(type)) {
@@ -1742,7 +1742,7 @@ bool ExecutionEngine::metaTypeFromJS(const Value *value, int type, void *data)
                     QByteArray className = name.left(name.size()-1);
                     QV4::ScopedObject p(scope, proto.getPointer());
                     if (QObject *qobject = qtObjectFromJS(this, p))
-                        canCast = qobject->qt_metacast(className) != 0;
+                        canCast = qobject->qt_metacast(className) != nullptr;
                 }
                 if (canCast) {
                     QByteArray varTypeName = QMetaType::typeName(var.userType());
@@ -1756,7 +1756,7 @@ bool ExecutionEngine::metaTypeFromJS(const Value *value, int type, void *data)
             }
         }
     } else if (value->isNull() && name.endsWith('*')) {
-        *reinterpret_cast<void* *>(data) = 0;
+        *reinterpret_cast<void* *>(data) = nullptr;
         return true;
     } else if (type == qMetaTypeId<QJSValue>()) {
         *reinterpret_cast<QJSValue*>(data) = QJSValue(this, value->asReturnedValue());
@@ -1784,7 +1784,7 @@ static bool convertToNativeQObject(QV4::ExecutionEngine *e, const QV4::Value &va
 static QObject *qtObjectFromJS(QV4::ExecutionEngine *engine, const QV4::Value &value)
 {
     if (!value.isObject())
-        return 0;
+        return nullptr;
 
     QV4::Scope scope(engine);
     QV4::Scoped<QV4::VariantObject> v(scope, value);
@@ -1797,7 +1797,7 @@ static QObject *qtObjectFromJS(QV4::ExecutionEngine *engine, const QV4::Value &v
     }
     QV4::Scoped<QV4::QObjectWrapper> wrapper(scope, value);
     if (!wrapper)
-        return 0;
+        return nullptr;
     return wrapper->object();
 }
 
diff --git a/src/qml/jsruntime/qv4engine_p.h b/src/qml/jsruntime/qv4engine_p.h
index a37c640431..5edf89f720 100644
--- a/src/qml/jsruntime/qv4engine_p.h
+++ b/src/qml/jsruntime/qv4engine_p.h
@@ -459,7 +459,7 @@ public:
     StackTrace exceptionStackTrace;
 
     ReturnedValue throwError(const Value &value);
-    ReturnedValue catchException(StackTrace *trace = 0);
+    ReturnedValue catchException(StackTrace *trace = nullptr);
 
     ReturnedValue throwError(const QString &message);
     ReturnedValue throwSyntaxError(const QString &message);
diff --git a/src/qml/jsruntime/qv4errorobject_p.h b/src/qml/jsruntime/qv4errorobject_p.h
index a5ee0eb886..6b578e8c38 100644
--- a/src/qml/jsruntime/qv4errorobject_p.h
+++ b/src/qml/jsruntime/qv4errorobject_p.h
@@ -180,7 +180,7 @@ struct ErrorObject: Object {
 
 template<>
 inline const ErrorObject *Value::as() const {
-    return isManaged() && m()->vtable()->isErrorObject ? reinterpret_cast<const ErrorObject *>(this) : 0;
+    return isManaged() && m()->vtable()->isErrorObject ? reinterpret_cast<const ErrorObject *>(this) : nullptr;
 }
 
 struct EvalErrorObject: ErrorObject {
@@ -322,7 +322,7 @@ struct URIErrorPrototype : ErrorObject
 
 inline SyntaxErrorObject *ErrorObject::asSyntaxError()
 {
-    return d()->errorType == QV4::Heap::ErrorObject::SyntaxError ? static_cast<SyntaxErrorObject *>(this) : 0;
+    return d()->errorType == QV4::Heap::ErrorObject::SyntaxError ? static_cast<SyntaxErrorObject *>(this) : nullptr;
 }
 
 
diff --git a/src/qml/jsruntime/qv4executableallocator.cpp b/src/qml/jsruntime/qv4executableallocator.cpp
index 64ac1267ce..6f04a712e6 100644
--- a/src/qml/jsruntime/qv4executableallocator.cpp
+++ b/src/qml/jsruntime/qv4executableallocator.cpp
@@ -159,7 +159,7 @@ ExecutableAllocator::~ExecutableAllocator()
 ExecutableAllocator::Allocation *ExecutableAllocator::allocate(size_t size)
 {
     QMutexLocker locker(&mutex);
-    Allocation *allocation = 0;
+    Allocation *allocation = nullptr;
 
     // Code is best aligned to 16-byte boundaries.
     size = WTF::roundUpToMultipleOf(16, size);
@@ -217,7 +217,7 @@ void ExecutableAllocator::free(Allocation *allocation)
     if (!merged)
         freeAllocations.insert(allocation->size, allocation);
 
-    allocation = 0;
+    allocation = nullptr;
 
     if (!chunk->firstAllocation->next) {
         freeAllocations.remove(chunk->firstAllocation->size, chunk->firstAllocation);
@@ -235,7 +235,7 @@ ExecutableAllocator::ChunkOfPages *ExecutableAllocator::chunkForAllocation(Alloc
     if (it != chunks.begin())
         --it;
     if (it == chunks.end())
-        return 0;
+        return nullptr;
     return *it;
 }
 
diff --git a/src/qml/jsruntime/qv4executableallocator_p.h b/src/qml/jsruntime/qv4executableallocator_p.h
index 353a6eacff..2984a89df5 100644
--- a/src/qml/jsruntime/qv4executableallocator_p.h
+++ b/src/qml/jsruntime/qv4executableallocator_p.h
@@ -85,8 +85,8 @@ public:
             : addr(0)
             , size(0)
             , free(true)
-            , next(0)
-            , prev(0)
+            , next(nullptr)
+            , prev(nullptr)
         {}
 
         void *start() const;
@@ -117,8 +117,8 @@ public:
     struct ChunkOfPages
     {
         ChunkOfPages()
-            : pages(0)
-            , firstAllocation(0)
+            : pages(nullptr)
+            , firstAllocation(nullptr)
         {}
         ~ChunkOfPages();
 
diff --git a/src/qml/jsruntime/qv4functionobject.cpp b/src/qml/jsruntime/qv4functionobject.cpp
index 165f1801ea..a8c1640767 100644
--- a/src/qml/jsruntime/qv4functionobject.cpp
+++ b/src/qml/jsruntime/qv4functionobject.cpp
@@ -232,7 +232,7 @@ ReturnedValue FunctionCtor::callAsConstructor(const FunctionObject *f, const Val
     if (!fe)
         return scope.engine->throwSyntaxError(QLatin1String("Parse error"));
 
-    Compiler::Module module(scope.engine->debugger() != 0);
+    Compiler::Module module(scope.engine->debugger() != nullptr);
 
     Compiler::JSUnitGenerator jsGenerator(&module);
     RuntimeCodegen cg(scope.engine, &jsGenerator, false);
@@ -351,7 +351,7 @@ ReturnedValue FunctionPrototype::method_bind(const FunctionObject *b, const Valu
         return scope.engine->throwTypeError();
 
     ScopedValue boundThis(scope, argc ? argv[0] : Primitive::undefinedValue());
-    Scoped<MemberData> boundArgs(scope, (Heap::MemberData *)0);
+    Scoped<MemberData> boundArgs(scope, (Heap::MemberData *)nullptr);
     if (argc > 1) {
         boundArgs = MemberData::allocate(scope.engine, argc - 1);
         boundArgs->d()->values.size = argc - 1;
@@ -440,7 +440,7 @@ void Heap::BoundFunction::init(QV4::ExecutionContext *scope, QV4::FunctionObject
     Scope s(scope);
     Heap::FunctionObject::init(scope, QStringLiteral("__bound function__"));
     this->target.set(s.engine, target->d());
-    this->boundArgs.set(s.engine, boundArgs ? boundArgs->d() : 0);
+    this->boundArgs.set(s.engine, boundArgs ? boundArgs->d() : nullptr);
     this->boundThis.set(scope->engine(), boundThis);
 
     ScopedObject f(s, this);
diff --git a/src/qml/jsruntime/qv4functionobject_p.h b/src/qml/jsruntime/qv4functionobject_p.h
index abd6f2dbcb..d6066ec648 100644
--- a/src/qml/jsruntime/qv4functionobject_p.h
+++ b/src/qml/jsruntime/qv4functionobject_p.h
@@ -84,7 +84,7 @@ DECLARE_HEAP_OBJECT(FunctionObject, Object) {
     };
 
     Q_QML_PRIVATE_EXPORT void init(QV4::ExecutionContext *scope, QV4::String *name, ReturnedValue (*code)(const QV4::FunctionObject *, const Value *thisObject, const Value *argv, int argc));
-    void init(QV4::ExecutionContext *scope, QV4::String *name = 0, bool createProto = false);
+    void init(QV4::ExecutionContext *scope, QV4::String *name = nullptr, bool createProto = false);
     void init(QV4::ExecutionContext *scope, QV4::Function *function, bool createProto = false);
     void init(QV4::ExecutionContext *scope, const QString &name, bool createProto = false);
     void init();
@@ -179,7 +179,7 @@ struct Q_QML_EXPORT FunctionObject: Object {
 
 template<>
 inline const FunctionObject *Value::as() const {
-    return isManaged() && m()->vtable()->isFunctionObject ? reinterpret_cast<const FunctionObject *>(this) : 0;
+    return isManaged() && m()->vtable()->isFunctionObject ? reinterpret_cast<const FunctionObject *>(this) : nullptr;
 }
 
 
diff --git a/src/qml/jsruntime/qv4globalobject.cpp b/src/qml/jsruntime/qv4globalobject.cpp
index 3214a716e8..f419ab53fe 100644
--- a/src/qml/jsruntime/qv4globalobject.cpp
+++ b/src/qml/jsruntime/qv4globalobject.cpp
@@ -375,12 +375,12 @@ ReturnedValue EvalFunction::evalCall(const Value *, const Value *argv, int argc,
     if (function->isStrict() || isStrict) {
         ScopedFunctionObject e(scope, FunctionObject::createScriptFunction(ctx, function));
         ScopedValue thisObject(scope, directCall ? scope.engine->currentStackFrame->thisObject() : scope.engine->globalObject->asReturnedValue());
-        return e->call(thisObject, 0, 0);
+        return e->call(thisObject, nullptr, 0);
     }
 
     ScopedValue thisObject(scope, scope.engine->currentStackFrame->thisObject());
 
-    return function->call(thisObject, 0, 0, ctx);
+    return function->call(thisObject, nullptr, 0, ctx);
 }
 
 
@@ -507,7 +507,7 @@ ReturnedValue GlobalFunctions::method_parseFloat(const FunctionObject *b, const
     QByteArray ba = trimmed.toLatin1();
     bool ok;
     const char *begin = ba.constData();
-    const char *end = 0;
+    const char *end = nullptr;
     double d = qstrtod(begin, &end, &ok);
     if (end - begin == 0)
         RETURN_RESULT(Encode(std::numeric_limits<double>::quiet_NaN())); // 3
diff --git a/src/qml/jsruntime/qv4identifier.cpp b/src/qml/jsruntime/qv4identifier.cpp
index 116d4ec201..c122bcb51a 100644
--- a/src/qml/jsruntime/qv4identifier.cpp
+++ b/src/qml/jsruntime/qv4identifier.cpp
@@ -132,13 +132,13 @@ IdentifierHashEntry *IdentifierHash::addEntry(const Identifier *identifier)
 const IdentifierHashEntry *IdentifierHash::lookup(const Identifier *identifier) const
 {
     if (!d)
-        return 0;
+        return nullptr;
     Q_ASSERT(d->entries);
 
     uint idx = identifier->hashValue % d->alloc;
     while (1) {
         if (!d->entries[idx].identifier)
-            return 0;
+            return nullptr;
         if (d->entries[idx].identifier == identifier)
             return d->entries + idx;
         ++idx;
@@ -149,14 +149,14 @@ const IdentifierHashEntry *IdentifierHash::lookup(const Identifier *identifier)
 const IdentifierHashEntry *IdentifierHash::lookup(const QString &str) const
 {
     if (!d)
-        return 0;
+        return nullptr;
     Q_ASSERT(d->entries);
 
     uint hash = String::createHashValue(str.constData(), str.length(), nullptr);
     uint idx = hash % d->alloc;
     while (1) {
         if (!d->entries[idx].identifier)
-            return 0;
+            return nullptr;
         if (d->entries[idx].identifier->string == str)
             return d->entries + idx;
         ++idx;
@@ -167,7 +167,7 @@ const IdentifierHashEntry *IdentifierHash::lookup(const QString &str) const
 const IdentifierHashEntry *IdentifierHash::lookup(String *str) const
 {
     if (!d)
-        return 0;
+        return nullptr;
     if (str->d()->identifier)
         return lookup(str->d()->identifier);
     return lookup(str->toQString());
diff --git a/src/qml/jsruntime/qv4identifier_p.h b/src/qml/jsruntime/qv4identifier_p.h
index f0ff987608..21e4e8ea66 100644
--- a/src/qml/jsruntime/qv4identifier_p.h
+++ b/src/qml/jsruntime/qv4identifier_p.h
@@ -97,7 +97,7 @@ struct IdentifierHash
 
     IdentifierHashData *d;
 
-    IdentifierHash() : d(0) {}
+    IdentifierHash() : d(nullptr) {}
     IdentifierHash(ExecutionEngine *engine);
     inline IdentifierHash(const IdentifierHash &other);
     inline ~IdentifierHash();
diff --git a/src/qml/jsruntime/qv4identifiertable.cpp b/src/qml/jsruntime/qv4identifiertable.cpp
index 3def6defbf..b77f9478d3 100644
--- a/src/qml/jsruntime/qv4identifiertable.cpp
+++ b/src/qml/jsruntime/qv4identifiertable.cpp
@@ -142,7 +142,7 @@ Identifier *IdentifierTable::identifierImpl(const Heap::String *str)
         return str->identifier;
     uint hash = str->hashValue();
     if (str->subtype == Heap::String::StringType_ArrayIndex)
-        return 0;
+        return nullptr;
 
     uint idx = hash % alloc;
     while (Heap::String *e = entries[idx]) {
@@ -161,7 +161,7 @@ Identifier *IdentifierTable::identifierImpl(const Heap::String *str)
 Heap::String *IdentifierTable::stringFromIdentifier(Identifier *i)
 {
     if (!i)
-        return 0;
+        return nullptr;
 
     uint idx = i->hashValue % alloc;
     while (1) {
diff --git a/src/qml/jsruntime/qv4include.cpp b/src/qml/jsruntime/qv4include.cpp
index d1ceb0a892..aaf5e3b857 100644
--- a/src/qml/jsruntime/qv4include.cpp
+++ b/src/qml/jsruntime/qv4include.cpp
@@ -61,7 +61,7 @@ QV4Include::QV4Include(const QUrl &url, QV4::ExecutionEngine *engine,
                        QV4::QmlContext *qmlContext, const QV4::Value &callback)
     : v4(engine), m_url(url)
 #if QT_CONFIG(qml_network)
-    , m_redirectCount(0), m_network(0) , m_reply(0)
+    , m_redirectCount(0), m_network(nullptr) , m_reply(nullptr)
 #endif
 {
     if (qmlContext)
@@ -88,7 +88,7 @@ QV4Include::~QV4Include()
 {
 #if QT_CONFIG(qml_network)
     delete m_reply;
-    m_reply = 0;
+    m_reply = nullptr;
 #endif
 }
 
diff --git a/src/qml/jsruntime/qv4internalclass.cpp b/src/qml/jsruntime/qv4internalclass.cpp
index 4041052344..9da854e7d7 100644
--- a/src/qml/jsruntime/qv4internalclass.cpp
+++ b/src/qml/jsruntime/qv4internalclass.cpp
@@ -105,10 +105,10 @@ void PropertyHash::addEntry(const PropertyHash::Entry &entry, int classSize)
 
 InternalClass::InternalClass(ExecutionEngine *engine)
     : engine(engine)
-    , vtable(0)
-    , prototype(0)
-    , m_sealed(0)
-    , m_frozen(0)
+    , vtable(nullptr)
+    , prototype(nullptr)
+    , m_sealed(nullptr)
+    , m_frozen(nullptr)
     , size(0)
     , extensible(true)
 {
@@ -124,8 +124,8 @@ InternalClass::InternalClass(const QV4::InternalClass &other)
     , propertyTable(other.propertyTable)
     , nameMap(other.nameMap)
     , propertyData(other.propertyData)
-    , m_sealed(0)
-    , m_frozen(0)
+    , m_sealed(nullptr)
+    , m_frozen(nullptr)
     , size(other.size)
     , extensible(other.extensible)
     , isUsedAsProto(other.isUsedAsProto)
@@ -223,7 +223,7 @@ InternalClass *InternalClass::changePrototypeImpl(Heap::Object *proto)
     Q_ASSERT(prototype != proto);
     Q_ASSERT(!proto || proto->internalClass->isUsedAsProto);
 
-    Transition temp = { { nullptr }, 0, Transition::PrototypeChange };
+    Transition temp = { { nullptr }, nullptr, Transition::PrototypeChange };
     temp.prototype = proto;
 
     Transition &t = lookupOrInsertTransition(temp);
@@ -487,7 +487,7 @@ void InternalClass::destroy()
         destroyStack.pop_back();
         if (!next->engine)
             continue;
-        next->engine = 0;
+        next->engine = nullptr;
         next->propertyTable.~PropertyHash();
         next->nameMap.~SharedInternalClassData<Identifier *>();
         next->propertyData.~SharedInternalClassData<PropertyAttributes>();
diff --git a/src/qml/jsruntime/qv4internalclass_p.h b/src/qml/jsruntime/qv4internalclass_p.h
index 546073dcf5..b689272006 100644
--- a/src/qml/jsruntime/qv4internalclass_p.h
+++ b/src/qml/jsruntime/qv4internalclass_p.h
@@ -277,10 +277,10 @@ struct InternalClass : public QQmlJS::Managed {
     }
 
     static void addMember(Object *object, String *string, PropertyAttributes data, uint *index);
-    Q_REQUIRED_RESULT InternalClass *addMember(String *string, PropertyAttributes data, uint *index = 0);
-    Q_REQUIRED_RESULT InternalClass *addMember(Identifier *identifier, PropertyAttributes data, uint *index = 0);
-    Q_REQUIRED_RESULT InternalClass *changeMember(Identifier *identifier, PropertyAttributes data, uint *index = 0);
-    static void changeMember(Object *object, String *string, PropertyAttributes data, uint *index = 0);
+    Q_REQUIRED_RESULT InternalClass *addMember(String *string, PropertyAttributes data, uint *index = nullptr);
+    Q_REQUIRED_RESULT InternalClass *addMember(Identifier *identifier, PropertyAttributes data, uint *index = nullptr);
+    Q_REQUIRED_RESULT InternalClass *changeMember(Identifier *identifier, PropertyAttributes data, uint *index = nullptr);
+    static void changeMember(Object *object, String *string, PropertyAttributes data, uint *index = nullptr);
     static void removeMember(Object *object, Identifier *id);
     uint find(const String *string);
     uint find(const Identifier *id)
diff --git a/src/qml/jsruntime/qv4jscall_p.h b/src/qml/jsruntime/qv4jscall_p.h
index 6d641bf9c5..c676b57c51 100644
--- a/src/qml/jsruntime/qv4jscall_p.h
+++ b/src/qml/jsruntime/qv4jscall_p.h
@@ -61,7 +61,7 @@ QT_BEGIN_NAMESPACE
 namespace QV4 {
 
 struct JSCallData {
-    JSCallData(const Scope &scope, int argc = 0, const Value *argv = 0, const Value *thisObject = 0)
+    JSCallData(const Scope &scope, int argc = 0, const Value *argv = nullptr, const Value *thisObject = nullptr)
         : scope(scope), argc(argc)
     {
         if (thisObject)
@@ -124,7 +124,7 @@ struct ScopedStackFrame {
             return;
         frame.jsFrame = reinterpret_cast<CallData *>(scope.alloc(sizeof(CallData)/sizeof(Value)));
         frame.jsFrame->context = context;
-        frame.v4Function = frame.parent ? frame.parent->v4Function : 0;
+        frame.v4Function = frame.parent ? frame.parent->v4Function : nullptr;
         scope.engine->currentStackFrame = &frame;
     }
     ~ScopedStackFrame() {
diff --git a/src/qml/jsruntime/qv4jsonobject.cpp b/src/qml/jsruntime/qv4jsonobject.cpp
index 51802d895b..99666806be 100644
--- a/src/qml/jsruntime/qv4jsonobject.cpp
+++ b/src/qml/jsruntime/qv4jsonobject.cpp
@@ -634,7 +634,7 @@ struct Stringify
         return false;
     }
 
-    Stringify(ExecutionEngine *e) : v4(e), replacerFunction(0), propertyList(0), propertyListSize(0) {}
+    Stringify(ExecutionEngine *e) : v4(e), replacerFunction(nullptr), propertyList(nullptr), propertyListSize(0) {}
 
     QString Str(const QString &key, const Value &v);
     QString JA(ArrayObject *a);
@@ -920,11 +920,11 @@ ReturnedValue JsonObject::method_stringify(const FunctionObject *b, const Value
                 if (v->as<NumberObject>() || v->as<StringObject>() || v->isNumber())
                     *v = v->toString(scope.engine);
                 if (!v->isString()) {
-                    v->setM(0);
+                    v->setM(nullptr);
                 } else {
                     for (uint j = 0; j <i; ++j) {
                         if (stringify.propertyList[j].m() == v->m()) {
-                            v->setM(0);
+                            v->setM(nullptr);
                             break;
                         }
                     }
diff --git a/src/qml/jsruntime/qv4managed.cpp b/src/qml/jsruntime/qv4managed.cpp
index 200380eda0..b50e5f0355 100644
--- a/src/qml/jsruntime/qv4managed.cpp
+++ b/src/qml/jsruntime/qv4managed.cpp
@@ -46,7 +46,7 @@ using namespace QV4;
 
 const VTable Managed::static_vtbl =
 {
-    0,
+    nullptr,
     0,
     0,
     Managed::IsExecutionContext,
@@ -58,15 +58,15 @@ const VTable Managed::static_vtbl =
     0,
     Managed::MyType,
     "Managed",
-    0,
-    0 /*markObjects*/,
+    nullptr,
+    nullptr /*markObjects*/,
     isEqualTo
 };
 
 
 QString Managed::className() const
 {
-    const char *s = 0;
+    const char *s = nullptr;
     switch (Type(d()->vtable()->type)) {
     case Type_Invalid:
     case Type_String:
diff --git a/src/qml/jsruntime/qv4memberdata_p.h b/src/qml/jsruntime/qv4memberdata_p.h
index 12eaf336b9..ac9671254d 100644
--- a/src/qml/jsruntime/qv4memberdata_p.h
+++ b/src/qml/jsruntime/qv4memberdata_p.h
@@ -93,7 +93,7 @@ struct MemberData : Managed
 
     inline uint size() const { return d()->values.size; }
 
-    static Heap::MemberData *allocate(QV4::ExecutionEngine *e, uint n, Heap::MemberData *old = 0);
+    static Heap::MemberData *allocate(QV4::ExecutionEngine *e, uint n, Heap::MemberData *old = nullptr);
 };
 
 }
diff --git a/src/qml/jsruntime/qv4object.cpp b/src/qml/jsruntime/qv4object.cpp
index aa8e850aed..8e9bf794a9 100644
--- a/src/qml/jsruntime/qv4object.cpp
+++ b/src/qml/jsruntime/qv4object.cpp
@@ -94,7 +94,7 @@ void Heap::Object::setUsedAsProto()
 
 bool Object::setPrototype(Object *proto)
 {
-    Heap::Object *p = proto ? proto->d() : 0;
+    Heap::Object *p = proto ? proto->d() : nullptr;
     Heap::Object *pp = p;
     while (pp) {
         if (pp == d())
@@ -193,8 +193,8 @@ void Object::defineAccessorProperty(String *name, ReturnedValue (*getter)(const
     QV4::Scope scope(v4);
     ScopedProperty p(scope);
     ExecutionContext *global = v4->rootContext();
-    p->setGetter(ScopedFunctionObject(scope, (getter ? FunctionObject::createBuiltinFunction(global, name, getter) : 0)));
-    p->setSetter(ScopedFunctionObject(scope, (setter ? FunctionObject::createBuiltinFunction(global, name, setter) : 0)));
+    p->setGetter(ScopedFunctionObject(scope, (getter ? FunctionObject::createBuiltinFunction(global, name, getter) : nullptr)));
+    p->setSetter(ScopedFunctionObject(scope, (setter ? FunctionObject::createBuiltinFunction(global, name, setter) : nullptr)));
     insertMember(name, p, QV4::Attr_Accessor|QV4::Attr_NotConfigurable|QV4::Attr_NotEnumerable);
 }
 
@@ -321,7 +321,7 @@ MemberData::Index Object::getValueOrSetter(String *name, PropertyAttributes *att
         o = o->prototype();
     }
     *attrs = Attr_Invalid;
-    return { 0, 0 };
+    return { nullptr, nullptr };
 }
 
 ArrayData::Index Object::getValueOrSetter(uint index, PropertyAttributes *attrs)
@@ -346,7 +346,7 @@ ArrayData::Index Object::getValueOrSetter(uint index, PropertyAttributes *attrs)
         o = o->prototype();
     }
     *attrs = Attr_Invalid;
-    return { 0, 0 };
+    return { nullptr, 0 };
 }
 
 bool Object::hasProperty(String *name) const
@@ -484,7 +484,7 @@ bool Object::deleteIndexedProperty(Managed *m, uint index)
 void Object::advanceIterator(Managed *m, ObjectIterator *it, Value *name, uint *index, Property *pd, PropertyAttributes *attrs)
 {
     Object *o = static_cast<Object *>(m);
-    name->setM(0);
+    name->setM(nullptr);
     *index = UINT_MAX;
 
     if (o->arrayData()) {
@@ -508,7 +508,7 @@ void Object::advanceIterator(Managed *m, ObjectIterator *it, Value *name, uint *
                     return;
                 }
             }
-            it->arrayNode = 0;
+            it->arrayNode = nullptr;
             it->arrayIndex = UINT_MAX;
         }
         // dense arrays
@@ -628,7 +628,7 @@ bool Object::internalPut(String *name, const Value &value)
     name->makeIdentifier();
     Identifier *id = name->identifier();
 
-    MemberData::Index memberIndex{0, 0};
+    MemberData::Index memberIndex{nullptr, nullptr};
     uint member = internalClass()->find(id);
     PropertyAttributes attrs;
     if (member < UINT_MAX) {
@@ -704,7 +704,7 @@ bool Object::internalPutIndexed(uint index, const Value &value)
 
     PropertyAttributes attrs;
 
-    ArrayData::Index arrayIndex = arrayData() ? arrayData()->getValueOrSetter(index, &attrs) : ArrayData::Index{ 0, 0 };
+    ArrayData::Index arrayIndex = arrayData() ? arrayData()->getValueOrSetter(index, &attrs) : ArrayData::Index{ nullptr, 0 };
 
     if (arrayIndex.isNull() && isStringObject()) {
         if (index < static_cast<StringObject *>(this)->length())
@@ -898,7 +898,7 @@ bool Object::defineOwnProperty2(ExecutionEngine *engine, uint index, const Prope
         return true;
     }
 
-    return __defineOwnProperty__(engine, index, 0, p, attrs);
+    return __defineOwnProperty__(engine, index, nullptr, p, attrs);
 }
 
 bool Object::__defineOwnProperty__(ExecutionEngine *engine, uint index, String *member, const Property *p, PropertyAttributes attrs)
@@ -949,8 +949,8 @@ bool Object::__defineOwnProperty__(ExecutionEngine *engine, uint index, String *
                 Q_ASSERT(arrayData());
                 setArrayAttributes(index, cattrs);
             }
-            current->setGetter(0);
-            current->setSetter(0);
+            current->setGetter(nullptr);
+            current->setSetter(nullptr);
         } else {
             // 9c
             cattrs.setType(PropertyAttributes::Data);
diff --git a/src/qml/jsruntime/qv4object_p.h b/src/qml/jsruntime/qv4object_p.h
index db57d1cf3f..1731ae3c76 100644
--- a/src/qml/jsruntime/qv4object_p.h
+++ b/src/qml/jsruntime/qv4object_p.h
@@ -236,8 +236,8 @@ struct Q_QML_EXPORT Object: Managed {
     Heap::Object *prototype() const { return d()->prototype(); }
     bool setPrototype(Object *proto);
 
-    void getOwnProperty(String *name, PropertyAttributes *attrs, Property *p = 0);
-    void getOwnProperty(uint index, PropertyAttributes *attrs, Property *p = 0);
+    void getOwnProperty(String *name, PropertyAttributes *attrs, Property *p = nullptr);
+    void getOwnProperty(uint index, PropertyAttributes *attrs, Property *p = nullptr);
 
     MemberData::Index getValueOrSetter(String *name, PropertyAttributes *attrs);
     ArrayData::Index getValueOrSetter(uint index, PropertyAttributes *attrs);
@@ -346,8 +346,8 @@ public:
     }
 
     void initSparseArray();
-    SparseArrayNode *sparseBegin() { return arrayType() == Heap::ArrayData::Sparse ? d()->arrayData->sparse->begin() : 0; }
-    SparseArrayNode *sparseEnd() { return arrayType() == Heap::ArrayData::Sparse ? d()->arrayData->sparse->end() : 0; }
+    SparseArrayNode *sparseBegin() { return arrayType() == Heap::ArrayData::Sparse ? d()->arrayData->sparse->begin() : nullptr; }
+    SparseArrayNode *sparseEnd() { return arrayType() == Heap::ArrayData::Sparse ? d()->arrayData->sparse->end() : nullptr; }
 
     inline bool protoHasArray() {
         Scope scope(engine());
@@ -360,9 +360,9 @@ public:
         return false;
     }
 
-    inline ReturnedValue get(String *name, bool *hasProperty = 0) const
+    inline ReturnedValue get(String *name, bool *hasProperty = nullptr) const
     { return vtable()->get(this, name, hasProperty); }
-    inline ReturnedValue getIndexed(uint idx, bool *hasProperty = 0) const
+    inline ReturnedValue getIndexed(uint idx, bool *hasProperty = nullptr) const
     { return vtable()->getIndexed(this, idx, hasProperty); }
 
     // use the set variants instead, to customize throw behavior
@@ -551,7 +551,7 @@ inline void Object::arraySet(uint index, const Value &value)
 
 template<>
 inline const ArrayObject *Value::as() const {
-    return isManaged() && m()->vtable()->type == Managed::Type_ArrayObject ? static_cast<const ArrayObject *>(this) : 0;
+    return isManaged() && m()->vtable()->type == Managed::Type_ArrayObject ? static_cast<const ArrayObject *>(this) : nullptr;
 }
 
 #ifndef V4_BOOTSTRAP
diff --git a/src/qml/jsruntime/qv4objectiterator.cpp b/src/qml/jsruntime/qv4objectiterator.cpp
index 0394c704f9..7bf7e1aa04 100644
--- a/src/qml/jsruntime/qv4objectiterator.cpp
+++ b/src/qml/jsruntime/qv4objectiterator.cpp
@@ -47,8 +47,8 @@ using namespace QV4;
 
 void ObjectIterator::init(const Object *o)
 {
-    object->setM(o ? o->m() : 0);
-    current->setM(o ? o->m() : 0);
+    object->setM(o ? o->m() : nullptr);
+    current->setM(o ? o->m() : nullptr);
 
     if (object->as<ArgumentsObject>()) {
         Scope scope(engine);
@@ -58,7 +58,7 @@ void ObjectIterator::init(const Object *o)
 
 void ObjectIterator::next(Value *name, uint *index, Property *pd, PropertyAttributes *attrs)
 {
-    name->setM(0);
+    name->setM(nullptr);
     *index = UINT_MAX;
 
     if (!object->as<Object>()) {
@@ -100,7 +100,7 @@ void ObjectIterator::next(Value *name, uint *index, Property *pd, PropertyAttrib
         if (flags & WithProtoChain)
             current->setM(co->prototype());
         else
-            current->setM(0);
+            current->setM(nullptr);
 
         arrayIndex = 0;
         memberIndex = 0;
diff --git a/src/qml/jsruntime/qv4objectiterator_p.h b/src/qml/jsruntime/qv4objectiterator_p.h
index 3e501f23ce..744d16301a 100644
--- a/src/qml/jsruntime/qv4objectiterator_p.h
+++ b/src/qml/jsruntime/qv4objectiterator_p.h
@@ -101,7 +101,7 @@ struct Q_QML_EXPORT ObjectIterator: ObjectIteratorData
         init(o);
     }
 
-    void next(Value *name, uint *index, Property *pd, PropertyAttributes *attributes = 0);
+    void next(Value *name, uint *index, Property *pd, PropertyAttributes *attributes = nullptr);
     ReturnedValue nextPropertyName(Value *value);
     ReturnedValue nextPropertyNameAsString(Value *value);
     ReturnedValue nextPropertyNameAsString();
diff --git a/src/qml/jsruntime/qv4objectproto.cpp b/src/qml/jsruntime/qv4objectproto.cpp
index a86352be40..b998b78520 100644
--- a/src/qml/jsruntime/qv4objectproto.cpp
+++ b/src/qml/jsruntime/qv4objectproto.cpp
@@ -638,7 +638,7 @@ ReturnedValue ObjectPrototype::method_set_proto(const FunctionObject *b, const V
         THROW_TYPE_ERROR();
 
     if (argv[0].isNull()) {
-        o->setPrototype(0);
+        o->setPrototype(nullptr);
         RETURN_UNDEFINED();
     }
 
diff --git a/src/qml/jsruntime/qv4persistent.cpp b/src/qml/jsruntime/qv4persistent.cpp
index 973541553a..7fc74173e3 100644
--- a/src/qml/jsruntime/qv4persistent.cpp
+++ b/src/qml/jsruntime/qv4persistent.cpp
@@ -172,7 +172,7 @@ Value &PersistentValueStorage::Iterator::operator *()
 
 PersistentValueStorage::PersistentValueStorage(ExecutionEngine *engine)
     : engine(engine),
-      firstPage(0)
+      firstPage(nullptr)
 {
 }
 
@@ -185,9 +185,9 @@ PersistentValueStorage::~PersistentValueStorage()
                 p->values[i] = Encode::undefined();
         }
         Page *n = p->header.next;
-        p->header.engine = 0;
-        p->header.prev = 0;
-        p->header.next = 0;
+        p->header.engine = nullptr;
+        p->header.prev = nullptr;
+        p->header.next = nullptr;
         Q_ASSERT(p->header.refCount);
         p = n;
     }
@@ -260,7 +260,7 @@ void PersistentValueStorage::freePage(void *page)
 
 
 PersistentValue::PersistentValue(const PersistentValue &other)
-    : val(0)
+    : val(nullptr)
 {
     if (other.val) {
         val = other.engine()->memoryManager->m_persistentValues->allocate();
@@ -281,7 +281,7 @@ PersistentValue::PersistentValue(ExecutionEngine *engine, ReturnedValue value)
 }
 
 PersistentValue::PersistentValue(ExecutionEngine *engine, Object *object)
-    : val(0)
+    : val(nullptr)
 {
     if (!object)
         return;
@@ -358,7 +358,7 @@ void PersistentValue::set(ExecutionEngine *engine, Heap::Base *obj)
 }
 
 WeakValue::WeakValue(const WeakValue &other)
-    : val(0)
+    : val(nullptr)
 {
     if (other.val) {
         allocVal(other.engine());
@@ -418,6 +418,6 @@ void WeakValue::free()
         PersistentValueStorage::free(val);
     }
 
-    val = 0;
+    val = nullptr;
 }
 
diff --git a/src/qml/jsruntime/qv4persistent_p.h b/src/qml/jsruntime/qv4persistent_p.h
index 1f838f5531..5a0b2389e1 100644
--- a/src/qml/jsruntime/qv4persistent_p.h
+++ b/src/qml/jsruntime/qv4persistent_p.h
@@ -81,7 +81,7 @@ struct Q_QML_EXPORT PersistentValueStorage
         Value &operator *();
     };
     Iterator begin() { return Iterator(firstPage, 0); }
-    Iterator end() { return Iterator(0, 0); }
+    Iterator end() { return Iterator(nullptr, 0); }
 
     static ExecutionEngine *getEngine(Value *v);
 
@@ -94,7 +94,7 @@ private:
 class Q_QML_EXPORT PersistentValue
 {
 public:
-    PersistentValue() : val(0) {}
+    PersistentValue() : val(nullptr) {}
     PersistentValue(const PersistentValue &other);
     PersistentValue &operator=(const PersistentValue &other);
     PersistentValue &operator=(const WeakValue &other);
@@ -117,19 +117,19 @@ public:
     }
     Managed *asManaged() const {
         if (!val)
-            return 0;
+            return nullptr;
         return val->managed();
     }
     template<typename T>
     T *as() const {
         if (!val)
-            return 0;
+            return nullptr;
         return val->as<T>();
     }
 
     ExecutionEngine *engine() const {
         if (!val)
-            return 0;
+            return nullptr;
         return PersistentValueStorage::getEngine(val);
     }
 
@@ -137,7 +137,7 @@ public:
     bool isNullOrUndefined() const { return !val || val->isNullOrUndefined(); }
     void clear() {
         PersistentValueStorage::free(val);
-        val = 0;
+        val = nullptr;
     }
     bool isEmpty() { return !val; }
 
@@ -148,7 +148,7 @@ private:
 class Q_QML_EXPORT WeakValue
 {
 public:
-    WeakValue() : val(0) {}
+    WeakValue() : val(nullptr) {}
     WeakValue(const WeakValue &other);
     WeakValue(ExecutionEngine *engine, const Value &value);
     WeakValue &operator=(const WeakValue &other);
@@ -183,19 +183,19 @@ public:
     }
     Managed *asManaged() const {
         if (!val)
-            return 0;
+            return nullptr;
         return val->managed();
     }
     template <typename T>
     T *as() const {
         if (!val)
-            return 0;
+            return nullptr;
         return val->as<T>();
     }
 
     ExecutionEngine *engine() const {
         if (!val)
-            return 0;
+            return nullptr;
         return PersistentValueStorage::getEngine(val);
     }
 
diff --git a/src/qml/jsruntime/qv4profiling_p.h b/src/qml/jsruntime/qv4profiling_p.h
index c69d1e4cf6..e8c154e4e7 100644
--- a/src/qml/jsruntime/qv4profiling_p.h
+++ b/src/qml/jsruntime/qv4profiling_p.h
@@ -139,7 +139,7 @@ struct MemoryAllocationProperties {
 class FunctionCall {
 public:
 
-    FunctionCall() : m_function(0), m_start(0), m_end(0)
+    FunctionCall() : m_function(nullptr), m_start(0), m_end(0)
     { Q_ASSERT_X(false, Q_FUNC_INFO, "Cannot construct a function call without function"); }
 
     FunctionCall(Function *function, qint64 start, qint64 end) :
@@ -276,7 +276,7 @@ public:
     // It's enough to ref() the function in the destructor as it will probably not disappear while
     // it's executing ...
     FunctionCallProfiler(ExecutionEngine *engine, Function *f)
-        : profiler(0)
+        : profiler(nullptr)
     {
         Profiler *p = engine->profiler();
         if (Q_UNLIKELY(p) && (p->featuresEnabled & (1 << Profiling::FeatureFunctionCall))) {
diff --git a/src/qml/jsruntime/qv4property_p.h b/src/qml/jsruntime/qv4property_p.h
index 2a5b6f7f74..7cb106c424 100644
--- a/src/qml/jsruntime/qv4property_p.h
+++ b/src/qml/jsruntime/qv4property_p.h
@@ -84,7 +84,7 @@ struct Property {
     inline Heap::FunctionObject *getter() const { return reinterpret_cast<Heap::FunctionObject *>(value.heapObject()); }
     inline Heap::FunctionObject *setter() const { return reinterpret_cast<Heap::FunctionObject *>(set.heapObject()); }
     inline void setGetter(FunctionObject *g) { value = reinterpret_cast<Managed *>(g); }
-    inline void setSetter(FunctionObject *s) { set = (s ? reinterpret_cast<Managed *>(s) : 0); }
+    inline void setSetter(FunctionObject *s) { set = (s ? reinterpret_cast<Managed *>(s) : nullptr); }
 
     void copy(const Property *other, PropertyAttributes attrs) {
         value = other->value;
@@ -92,7 +92,7 @@ struct Property {
             set = other->set;
     }
 
-    explicit Property()  { value = Encode::undefined(); set = Value::fromHeapObject(0); }
+    explicit Property()  { value = Encode::undefined(); set = Value::fromHeapObject(nullptr); }
     Property(Heap::FunctionObject *getter, Heap::FunctionObject *setter) {
         value.setM(reinterpret_cast<Heap::Base *>(getter));
         set.setM(reinterpret_cast<Heap::Base *>(setter));
diff --git a/src/qml/jsruntime/qv4qmlcontext.cpp b/src/qml/jsruntime/qv4qmlcontext.cpp
index cf4ef68bc0..040f060476 100644
--- a/src/qml/jsruntime/qv4qmlcontext.cpp
+++ b/src/qml/jsruntime/qv4qmlcontext.cpp
@@ -202,7 +202,7 @@ ReturnedValue QQmlContextWrapper::get(const Managed *m, String *name, bool *hasP
                 return result->asReturnedValue();
             }
         }
-        scopeObject = 0;
+        scopeObject = nullptr;
 
 
         // Search context object
@@ -272,7 +272,7 @@ bool QQmlContextWrapper::put(Managed *m, String *name, const Value &value)
         if (scopeObject &&
             QV4::QObjectWrapper::setQmlProperty(v4, context, scopeObject, name, QV4::QObjectWrapper::CheckRevision, value))
             return true;
-        scopeObject = 0;
+        scopeObject = nullptr;
 
         // Search context object
         if (context->contextObject &&
@@ -312,7 +312,7 @@ Heap::QmlContext *QmlContext::createWorkerContext(ExecutionContext *parent, cons
     context->isInternal = true;
     context->isJSContext = true;
 
-    Scoped<QQmlContextWrapper> qml(scope, scope.engine->memoryManager->allocObject<QQmlContextWrapper>(context, (QObject*)0));
+    Scoped<QQmlContextWrapper> qml(scope, scope.engine->memoryManager->allocObject<QQmlContextWrapper>(context, (QObject*)nullptr));
     qml->d()->isNullWrapper = true;
 
     qml->setReadOnly(false);
diff --git a/src/qml/jsruntime/qv4qobjectwrapper.cpp b/src/qml/jsruntime/qv4qobjectwrapper.cpp
index 9ee357eca5..5ebd385cfb 100644
--- a/src/qml/jsruntime/qv4qobjectwrapper.cpp
+++ b/src/qml/jsruntime/qv4qobjectwrapper.cpp
@@ -99,7 +99,7 @@ QPair<QObject *, int> QObjectMethod::extractQtMethod(const QV4::FunctionObject *
             return qMakePair(method->object(), method->methodIndex());
     }
 
-    return qMakePair((QObject *)0, -1);
+    return qMakePair((QObject *)nullptr, -1);
 }
 
 static QPair<QObject *, int> extractQtSignal(const Value &value)
@@ -116,7 +116,7 @@ static QPair<QObject *, int> extractQtSignal(const Value &value)
             return qMakePair(handler->object(), handler->signalIndex());
     }
 
-    return qMakePair((QObject *)0, -1);
+    return qMakePair((QObject *)nullptr, -1);
 }
 
 static QV4::ReturnedValue loadProperty(QV4::ExecutionEngine *v4, QObject *object,
@@ -126,7 +126,7 @@ static QV4::ReturnedValue loadProperty(QV4::ExecutionEngine *v4, QObject *object
     QV4::Scope scope(v4);
 
     if (property.isQObject()) {
-        QObject *rv = 0;
+        QObject *rv = nullptr;
         property.readProperty(object, &rv);
         return QV4::QObjectWrapper::wrap(v4, rv);
     } else if (property.isQList()) {
@@ -194,7 +194,7 @@ static QV4::ReturnedValue loadProperty(QV4::ExecutionEngine *v4, QObject *object
                  "'%s::%s'", p.typeName(), object->metaObject()->className(), p.name());
         return QV4::Encode::undefined();
     } else {
-        QVariant v(property.propType(), (void *)0);
+        QVariant v(property.propType(), (void *)nullptr);
         property.readProperty(object, v.data());
         return scope.engine->fromVariant(v);
     }
@@ -217,7 +217,7 @@ QQmlPropertyData *QObjectWrapper::findProperty(ExecutionEngine *engine, QObject
     Q_UNUSED(revisionMode);
 
     QQmlData *ddata = QQmlData::get(o, false);
-    QQmlPropertyData *result = 0;
+    QQmlPropertyData *result = nullptr;
     if (ddata && ddata->propertyCache)
         result = ddata->propertyCache->property(name, o, qmlContext);
     else
@@ -249,7 +249,7 @@ ReturnedValue QObjectWrapper::getProperty(ExecutionEngine *engine, QObject *obje
         }
     }
 
-    QQmlEnginePrivate *ep = engine->qmlEngine() ? QQmlEnginePrivate::get(engine->qmlEngine()) : 0;
+    QQmlEnginePrivate *ep = engine->qmlEngine() ? QQmlEnginePrivate::get(engine->qmlEngine()) : nullptr;
 
     if (captureRequired && ep && ep->propertyCapture && !property->isConstant())
         ep->propertyCapture->captureProperty(object, property->coreIndex(), property->notifyIndex());
@@ -434,7 +434,7 @@ void QObjectWrapper::setProperty(ExecutionEngine *engine, QObject *object, QQmlP
         return;
     }
 
-    QQmlBinding *newBinding = 0;
+    QQmlBinding *newBinding = nullptr;
     QV4::Scope scope(engine);
     QV4::ScopedFunctionObject f(scope, value);
     if (f) {
@@ -496,9 +496,9 @@ void QObjectWrapper::setProperty(ExecutionEngine *engine, QObject *object, QQmlP
     QMetaObject::metacall(object, QMetaObject::WriteProperty, property->coreIndex(), argv);
 
     if (value.isNull() && property->isQObject()) {
-        PROPERTY_STORE(QObject*, 0);
+        PROPERTY_STORE(QObject*, nullptr);
     } else if (value.isUndefined() && property->isResettable()) {
-        void *a[] = { 0 };
+        void *a[] = { nullptr };
         QMetaObject::metacall(object, QMetaObject::ResetProperty, property->coreIndex(), a);
     } else if (value.isUndefined() && property->propType() == qMetaTypeId<QVariant>()) {
         PROPERTY_STORE(QVariant, QVariant());
@@ -531,7 +531,7 @@ void QObjectWrapper::setProperty(ExecutionEngine *engine, QObject *object, QQmlP
         Q_ASSERT(vmemo);
         vmemo->setVMEProperty(property->coreIndex(), value);
     } else if (property->propType() == qMetaTypeId<QQmlScriptString>() && (value.isUndefined() || value.isPrimitive())) {
-        QQmlScriptString ss(value.toQStringNoThrow(), 0 /* context */, object);
+        QQmlScriptString ss(value.toQStringNoThrow(), nullptr /* context */, object);
         if (value.isNumber()) {
             ss.d->numberValue = value.toNumber();
             ss.d->isNumberLiteral = true;
@@ -549,7 +549,7 @@ void QObjectWrapper::setProperty(ExecutionEngine *engine, QObject *object, QQmlP
 
         QQmlContextData *callingQmlContext = scope.engine->callingQmlContext();
         if (!QQmlPropertyPrivate::write(object, *property, v, callingQmlContext)) {
-            const char *valueType = 0;
+            const char *valueType = nullptr;
             if (v.userType() == QVariant::Invalid) valueType = "null";
             else valueType = QMetaType::typeName(v.userType());
 
@@ -590,7 +590,7 @@ ReturnedValue QObjectWrapper::wrap_slowPath(ExecutionEngine *engine, QObject *ob
     } else {
         // If this object is tainted, we have to check to see if it is in our
         // tainted object list
-        ScopedObject alternateWrapper(scope, (Object *)0);
+        ScopedObject alternateWrapper(scope, (Object *)nullptr);
         if (engine->m_multiplyWrappedQObjects && ddata->hasTaintedV4Object)
             alternateWrapper = engine->m_multiplyWrappedQObjects->value(object);
 
@@ -736,7 +736,7 @@ void QObjectWrapper::advanceIterator(Managed *m, ObjectIterator *it, Value *name
     static const int destroyedIdx2 = QObject::staticMetaObject.indexOfSignal("destroyed()");
     static const int deleteLaterIdx = QObject::staticMetaObject.indexOfSlot("deleteLater()");
 
-    name->setM(0);
+    name->setM(nullptr);
     *index = UINT_MAX;
 
     QObjectWrapper *that = static_cast<QObjectWrapper*>(m);
@@ -813,7 +813,7 @@ struct QObjectSlotDispatcher : public QtPrivate::QSlotObjectBase
                 break;
 
             QQmlMetaObject::ArgTypeStorage storage;
-            int *argsTypes = QQmlMetaObject(r).methodParameterTypes(This->signalIndex, &storage, 0);
+            int *argsTypes = QQmlMetaObject(r).methodParameterTypes(This->signalIndex, &storage, nullptr);
 
             int argCount = argsTypes ? argsTypes[0]:0;
 
@@ -842,7 +842,7 @@ struct QObjectSlotDispatcher : public QtPrivate::QSlotObjectBase
                     QQmlEnginePrivate::get(qmlEngine)->warning(error);
                 } else {
                     QMessageLogger(error.url().toString().toLatin1().constData(),
-                                   error.line(), 0).warning().noquote()
+                                   error.line(), nullptr).warning().noquote()
                             << error.toString();
                 }
             }
@@ -1052,8 +1052,8 @@ void QObjectWrapper::destroyObject(bool lastCall)
                 if (ddata && ddata->ownContext) {
                     Q_ASSERT(ddata->ownContext == ddata->context);
                     ddata->ownContext->emitDestruction();
-                    ddata->ownContext = 0;
-                    ddata->context = 0;
+                    ddata->ownContext = nullptr;
+                    ddata->context = nullptr;
                 }
                 // This object is notionally destroyed now
                 ddata->isQueuedForDeletion = true;
@@ -1181,7 +1181,7 @@ static QV4::ReturnedValue CallMethod(const QQmlObjectOrGadget &object, int index
 
     } else {
 
-        void *args[] = { 0 };
+        void *args[] = { nullptr };
         object.metacall(callType, index, args);
         return Encode::undefined();
 
@@ -1354,7 +1354,7 @@ static const QQmlPropertyData * RelatedMethod(const QQmlObjectOrGadget &object,
                                               const QQmlPropertyCache *propertyCache)
 {
     if (!current->isOverload())
-        return 0;
+        return nullptr;
 
     Q_ASSERT(!current->overrideIndexIsProperty());
 
@@ -1372,7 +1372,7 @@ static const QQmlPropertyData * RelatedMethod(const QQmlObjectOrGadget &object,
         // If we've been called before with the same override index, then
         // we can't go any further...
         if (&dummy == current && dummy.coreIndex() == current->overrideIndex())
-            return 0;
+            return nullptr;
 
         QMetaMethod method = mo->method(current->overrideIndex());
         dummy.load(method);
@@ -1407,7 +1407,7 @@ static QV4::ReturnedValue CallPrecise(const QQmlObjectOrGadget &object, const QQ
 
     if (data.hasArguments()) {
 
-        int *args = 0;
+        int *args = nullptr;
         QQmlMetaObject::ArgTypeStorage storage;
 
         if (data.isConstructor())
@@ -1430,7 +1430,7 @@ static QV4::ReturnedValue CallPrecise(const QQmlObjectOrGadget &object, const QQ
 
     } else {
 
-        return CallMethod(object, data.coreIndex(), returnType, 0, 0, engine, callArgs, callType);
+        return CallMethod(object, data.coreIndex(), returnType, 0, nullptr, engine, callArgs, callType);
 
     }
 }
@@ -1467,9 +1467,9 @@ static QV4::ReturnedValue CallOverloaded(const QQmlObjectOrGadget &object, const
     do {
         QQmlMetaObject::ArgTypeStorage storage;
         int methodArgumentCount = 0;
-        int *methodArgTypes = 0;
+        int *methodArgTypes = nullptr;
         if (attempt->hasArguments()) {
-            int *args = object.methodParameterTypes(attempt->coreIndex(), &storage, 0);
+            int *args = object.methodParameterTypes(attempt->coreIndex(), &storage, nullptr);
             if (!args) // Must be an unknown argument
                 continue;
 
@@ -1497,7 +1497,7 @@ static QV4::ReturnedValue CallOverloaded(const QQmlObjectOrGadget &object, const
         if (bestParameterScore == 0 && bestMatchScore == 0)
             break; // We can't get better than that
 
-    } while ((attempt = RelatedMethod(object, attempt, dummy, propertyCache)) != 0);
+    } while ((attempt = RelatedMethod(object, attempt, dummy, propertyCache)) != nullptr);
 
     if (best.isValid()) {
         return CallPrecise(object, best, engine, callArgs, callType);
@@ -1564,7 +1564,7 @@ void *CallArgument::dataPtr()
         return stdVectorQModelIndexPtr;
     else if (type != 0)
         return (void *)&allocData;
-    return 0;
+    return nullptr;
 }
 
 void CallArgument::initAsType(int callType)
@@ -1582,7 +1582,7 @@ void CallArgument::initAsType(int callType)
                callType == QMetaType::Float) {
         type = callType;
     } else if (callType == QMetaType::QObjectStar) {
-        qobjectPtr = 0;
+        qobjectPtr = nullptr;
         type = callType;
     } else if (callType == QMetaType::QString) {
         qstringPtr = new (&allocData) QString();
@@ -1607,7 +1607,7 @@ void CallArgument::initAsType(int callType)
         jsonValuePtr = new (&allocData) QJsonValue();
     } else {
         type = -1;
-        qvariantPtr = new (&allocData) QVariant(callType, (void *)0);
+        qvariantPtr = new (&allocData) QVariant(callType, (void *)nullptr);
     }
 }
 
@@ -1659,7 +1659,7 @@ void CallArgument::fromValue(int callType, QV4::ExecutionEngine *engine, const Q
             qstringPtr = new (&allocData) QString(value.toQStringNoThrow());
         type = callType;
     } else if (callType == QMetaType::QObjectStar) {
-        qobjectPtr = 0;
+        qobjectPtr = nullptr;
         if (const QV4::QObjectWrapper *qobjectWrapper = value.as<QV4::QObjectWrapper>())
             qobjectPtr = qobjectWrapper->object();
         else if (const QV4::QQmlTypeWrapper *qmlTypeWrapper = value.as<QV4::QQmlTypeWrapper>())
@@ -1676,14 +1676,14 @@ void CallArgument::fromValue(int callType, QV4::ExecutionEngine *engine, const Q
 
             uint length = array->getLength();
             for (uint ii = 0; ii < length; ++ii)  {
-                QObject *o = 0;
+                QObject *o = nullptr;
                 qobjectWrapper = array->getIndexed(ii);
                 if (!!qobjectWrapper)
                     o = qobjectWrapper->object();
                 qlistPtr->append(o);
             }
         } else {
-            QObject *o = 0;
+            QObject *o = nullptr;
             if (const QV4::QObjectWrapper *qobjectWrapper = value.as<QV4::QObjectWrapper>())
                 o = qobjectWrapper->object();
             qlistPtr->append(o);
@@ -1740,7 +1740,7 @@ void CallArgument::fromValue(int callType, QV4::ExecutionEngine *engine, const Q
         qvariantPtr = new (&allocData) QVariant();
         type = -1;
 
-        QQmlEnginePrivate *ep = engine->qmlEngine() ? QQmlEnginePrivate::get(engine->qmlEngine()) : 0;
+        QQmlEnginePrivate *ep = engine->qmlEngine() ? QQmlEnginePrivate::get(engine->qmlEngine()) : nullptr;
         QVariant v = scope.engine->toVariant(value, callType);
 
         if (v.userType() == callType) {
@@ -1753,12 +1753,12 @@ void CallArgument::fromValue(int callType, QV4::ExecutionEngine *engine, const Q
             if (!mo.isNull()) {
                 QObject *obj = ep->toQObject(v);
 
-                if (obj != 0 && !QQmlMetaObject::canConvert(obj, mo))
-                    obj = 0;
+                if (obj != nullptr && !QQmlMetaObject::canConvert(obj, mo))
+                    obj = nullptr;
 
                 *qvariantPtr = QVariant(callType, &obj);
             } else {
-                *qvariantPtr = QVariant(callType, (void *)0);
+                *qvariantPtr = QVariant(callType, (void *)nullptr);
             }
         }
     }
@@ -1957,7 +1957,7 @@ ReturnedValue QObjectMethod::callInternal(const Value *thisObject, const Value *
         QQmlV4Function func(callData, rv, v4);
         QQmlV4Function *funcptr = &func;
 
-        void *args[] = { 0, &funcptr };
+        void *args[] = { nullptr, &funcptr };
         object.metacall(QMetaObject::InvokeMetaMethod, method.coreIndex(), args);
 
         return rv->asReturnedValue();
@@ -2089,9 +2089,9 @@ ReturnedValue QMetaObjectWrapper::callOverloadedConstructor(QV4::ExecutionEngine
         const QQmlPropertyData & attempt = d()->constructors[i];
         QQmlMetaObject::ArgTypeStorage storage;
         int methodArgumentCount = 0;
-        int *methodArgTypes = 0;
+        int *methodArgTypes = nullptr;
         if (attempt.hasArguments()) {
-            int *args = object.constructorParameterTypes(attempt.coreIndex(), &storage, 0);
+            int *args = object.constructorParameterTypes(attempt.coreIndex(), &storage, nullptr);
             if (!args) // Must be an unknown argument
                 continue;
 
diff --git a/src/qml/jsruntime/qv4qobjectwrapper_p.h b/src/qml/jsruntime/qv4qobjectwrapper_p.h
index 28717b5d80..1455acc1b3 100644
--- a/src/qml/jsruntime/qv4qobjectwrapper_p.h
+++ b/src/qml/jsruntime/qv4qobjectwrapper_p.h
@@ -166,8 +166,8 @@ struct Q_QML_EXPORT QObjectWrapper : public Object
 
     QObject *object() const { return d()->object(); }
 
-    ReturnedValue getQmlProperty(QQmlContextData *qmlContext, String *name, RevisionMode revisionMode, bool *hasProperty = 0, bool includeImports = false) const;
-    static ReturnedValue getQmlProperty(ExecutionEngine *engine, QQmlContextData *qmlContext, QObject *object, String *name, RevisionMode revisionMode, bool *hasProperty = 0);
+    ReturnedValue getQmlProperty(QQmlContextData *qmlContext, String *name, RevisionMode revisionMode, bool *hasProperty = nullptr, bool includeImports = false) const;
+    static ReturnedValue getQmlProperty(ExecutionEngine *engine, QQmlContextData *qmlContext, QObject *object, String *name, RevisionMode revisionMode, bool *hasProperty = nullptr);
 
     static bool setQmlProperty(ExecutionEngine *engine, QQmlContextData *qmlContext, QObject *object, String *name, RevisionMode revisionMode, const Value &value);
 
diff --git a/src/qml/jsruntime/qv4regexp.cpp b/src/qml/jsruntime/qv4regexp.cpp
index 36616bc024..d99536829b 100644
--- a/src/qml/jsruntime/qv4regexp.cpp
+++ b/src/qml/jsruntime/qv4regexp.cpp
@@ -48,7 +48,7 @@ RegExpCache::~RegExpCache()
 {
     for (RegExpCache::Iterator it = begin(), e = end(); it != e; ++it) {
         if (RegExp *re = it.value().as<RegExp>())
-            re->d()->cache = 0;
+            re->d()->cache = nullptr;
     }
 }
 
@@ -100,7 +100,7 @@ void Heap::RegExp::init(ExecutionEngine *engine, const QString &pattern, bool ig
 
     valid = false;
 
-    const char* error = 0;
+    const char* error = nullptr;
     JSC::Yarr::YarrPattern yarrPattern(WTF::String(pattern), ignoreCase, multiLine, &error);
     if (error)
         return;
diff --git a/src/qml/jsruntime/qv4regexpobject.cpp b/src/qml/jsruntime/qv4regexpobject.cpp
index 9a5afdf308..000e2c3a7e 100644
--- a/src/qml/jsruntime/qv4regexpobject.cpp
+++ b/src/qml/jsruntime/qv4regexpobject.cpp
@@ -283,25 +283,25 @@ void RegExpPrototype::init(ExecutionEngine *engine, Object *constructor)
     ctor->defineReadonlyProperty(engine->id_length(), Primitive::fromInt32(2));
 
     // Properties deprecated in the spec but required by "the web" :(
-    ctor->defineAccessorProperty(QStringLiteral("lastMatch"), method_get_lastMatch_n<0>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$&"), method_get_lastMatch_n<0>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$1"), method_get_lastMatch_n<1>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$2"), method_get_lastMatch_n<2>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$3"), method_get_lastMatch_n<3>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$4"), method_get_lastMatch_n<4>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$5"), method_get_lastMatch_n<5>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$6"), method_get_lastMatch_n<6>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$7"), method_get_lastMatch_n<7>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$8"), method_get_lastMatch_n<8>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$9"), method_get_lastMatch_n<9>, 0);
-    ctor->defineAccessorProperty(QStringLiteral("lastParen"), method_get_lastParen, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$+"), method_get_lastParen, 0);
-    ctor->defineAccessorProperty(QStringLiteral("input"), method_get_input, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$_"), method_get_input, 0);
-    ctor->defineAccessorProperty(QStringLiteral("leftContext"), method_get_leftContext, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$`"), method_get_leftContext, 0);
-    ctor->defineAccessorProperty(QStringLiteral("rightContext"), method_get_rightContext, 0);
-    ctor->defineAccessorProperty(QStringLiteral("$'"), method_get_rightContext, 0);
+    ctor->defineAccessorProperty(QStringLiteral("lastMatch"), method_get_lastMatch_n<0>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$&"), method_get_lastMatch_n<0>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$1"), method_get_lastMatch_n<1>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$2"), method_get_lastMatch_n<2>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$3"), method_get_lastMatch_n<3>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$4"), method_get_lastMatch_n<4>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$5"), method_get_lastMatch_n<5>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$6"), method_get_lastMatch_n<6>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$7"), method_get_lastMatch_n<7>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$8"), method_get_lastMatch_n<8>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$9"), method_get_lastMatch_n<9>, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("lastParen"), method_get_lastParen, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$+"), method_get_lastParen, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("input"), method_get_input, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$_"), method_get_input, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("leftContext"), method_get_leftContext, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$`"), method_get_leftContext, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("rightContext"), method_get_rightContext, nullptr);
+    ctor->defineAccessorProperty(QStringLiteral("$'"), method_get_rightContext, nullptr);
 
     defineDefaultProperty(QStringLiteral("constructor"), (o = ctor));
     defineDefaultProperty(QStringLiteral("exec"), method_exec, 1);
diff --git a/src/qml/jsruntime/qv4runtime.cpp b/src/qml/jsruntime/qv4runtime.cpp
index eb4f6a21fc..04cad8ddb7 100644
--- a/src/qml/jsruntime/qv4runtime.cpp
+++ b/src/qml/jsruntime/qv4runtime.cpp
@@ -382,11 +382,11 @@ double RuntimeHelpers::stringToNumber(const QString &string)
 {
     const QStringRef s = QStringRef(&string).trimmed();
     if (s.startsWith(QLatin1String("0x")) || s.startsWith(QLatin1String("0X")))
-        return s.toLong(0, 16);
+        return s.toLong(nullptr, 16);
     bool ok;
     QByteArray ba = s.toLatin1();
     const char *begin = ba.constData();
-    const char *end = 0;
+    const char *end = nullptr;
     double d = qstrtod(begin, &end, &ok);
     if (end - begin != ba.size()) {
         if (ba == "Infinity" || ba == "+Infinity")
@@ -457,7 +457,7 @@ Heap::Object *RuntimeHelpers::convertToObject(ExecutionEngine *engine, const Val
     case Value::Undefined_Type:
     case Value::Null_Type:
         engine->throwTypeError();
-        return 0;
+        return nullptr;
     case Value::Boolean_Type:
         return engine->newBooleanObject(value.booleanValue());
     case Value::Managed_Type:
@@ -680,7 +680,7 @@ bool Runtime::method_storeElement(ExecutionEngine *engine, const Value &object,
 ReturnedValue Runtime::method_foreachIterator(ExecutionEngine *engine, const Value &in)
 {
     Scope scope(engine);
-    ScopedObject o(scope, (Object *)0);
+    ScopedObject o(scope, (Object *)nullptr);
     if (!in.isNullOrUndefined())
         o = in.toObject(engine);
     return engine->newForEachIteratorObject(o)->asReturnedValue();
@@ -1199,7 +1199,7 @@ ReturnedValue Runtime::method_createCatchContext(ExecutionContext *parent, int e
 {
     ExecutionEngine *e = parent->engine();
     return parent->newCatchContext(e->currentStackFrame->v4Function->compilationUnit->runtimeStrings[exceptionVarNameIndex],
-                                   e->catchException(0))->asReturnedValue();
+                                   e->catchException(nullptr))->asReturnedValue();
 }
 
 void Runtime::method_declareVar(ExecutionEngine *engine, bool deletable, int nameIndex)
@@ -1299,7 +1299,7 @@ ReturnedValue Runtime::method_loadQmlIdObject(ExecutionEngine *engine, const Val
     if (!context || index >= (uint)context->idValueCount)
         return Encode::undefined();
 
-    QQmlEnginePrivate *ep = engine->qmlEngine() ? QQmlEnginePrivate::get(engine->qmlEngine()) : 0;
+    QQmlEnginePrivate *ep = engine->qmlEngine() ? QQmlEnginePrivate::get(engine->qmlEngine()) : nullptr;
     if (ep && ep->propertyCapture)
         ep->propertyCapture->captureProperty(&context->idValues[index].bindings);
 
diff --git a/src/qml/jsruntime/qv4runtimecodegen.cpp b/src/qml/jsruntime/qv4runtimecodegen.cpp
index 662a780e71..fe18ddf9ed 100644
--- a/src/qml/jsruntime/qv4runtimecodegen.cpp
+++ b/src/qml/jsruntime/qv4runtimecodegen.cpp
@@ -50,15 +50,15 @@ void RuntimeCodegen::generateFromFunctionExpression(const QString &fileName,
     _module = module;
     _module->fileName = fileName;
     _module->finalUrl = fileName;
-    _context = 0;
+    _context = nullptr;
 
     Compiler::ScanFunctions scan(this, sourceCode, Compiler::GlobalCode);
     // fake a global environment
-    scan.enterEnvironment(0, Compiler::FunctionCode);
+    scan.enterEnvironment(nullptr, Compiler::FunctionCode);
     scan(ast);
     scan.leaveEnvironment();
 
-    int index = defineFunction(ast->name.toString(), ast, ast->formals, ast->body ? ast->body->elements : 0);
+    int index = defineFunction(ast->name.toString(), ast, ast->formals, ast->body ? ast->body->elements : nullptr);
     _module->rootContext = _module->functions.at(index);
 }
 
diff --git a/src/qml/jsruntime/qv4scopedvalue_p.h b/src/qml/jsruntime/qv4scopedvalue_p.h
index afb5c21d36..bb20f384b3 100644
--- a/src/qml/jsruntime/qv4scopedvalue_p.h
+++ b/src/qml/jsruntime/qv4scopedvalue_p.h
@@ -209,7 +209,7 @@ struct Scoped
     enum ConvertType { Convert };
 
     QML_NEARLY_ALWAYS_INLINE void setPointer(const Managed *p) {
-        ptr->setM(p ? p->m() : 0);
+        ptr->setM(p ? p->m() : nullptr);
     }
 
     QML_NEARLY_ALWAYS_INLINE Scoped(const Scope &scope)
@@ -244,7 +244,7 @@ struct Scoped
     QML_NEARLY_ALWAYS_INLINE Scoped(const Scope &scope, const Value *v)
     {
         ptr = scope.engine->jsAlloca(1);
-        setPointer(v ? v->as<T>() : 0);
+        setPointer(v ? v->as<T>() : nullptr);
     }
 
     QML_NEARLY_ALWAYS_INLINE Scoped(const Scope &scope, T *t)
@@ -290,7 +290,7 @@ struct Scoped
         return *this;
     }
     Scoped<T> &operator=(Value *v) {
-        setPointer(v ? v->as<T>() : 0);
+        setPointer(v ? v->as<T>() : nullptr);
         return *this;
     }
 
diff --git a/src/qml/jsruntime/qv4script.cpp b/src/qml/jsruntime/qv4script.cpp
index 0c5f02bcfc..bb6608bec0 100644
--- a/src/qml/jsruntime/qv4script.cpp
+++ b/src/qml/jsruntime/qv4script.cpp
@@ -62,14 +62,14 @@ using namespace QV4;
 
 Script::Script(ExecutionEngine *v4, QmlContext *qml, CompiledData::CompilationUnit *compilationUnit)
     : line(1), column(0), context(v4->rootContext()), strictMode(false), inheritContext(true), parsed(false)
-    , compilationUnit(compilationUnit), vmFunction(0), parseAsBinding(true)
+    , compilationUnit(compilationUnit), vmFunction(nullptr), parseAsBinding(true)
 {
     if (qml)
         qmlContext.set(v4, *qml);
 
     parsed = true;
 
-    vmFunction = compilationUnit ? compilationUnit->linkToEngine(v4) : 0;
+    vmFunction = compilationUnit ? compilationUnit->linkToEngine(v4) : nullptr;
 }
 
 Script::~Script()
@@ -88,7 +88,7 @@ void Script::parse()
     ExecutionEngine *v4 = context->engine();
     Scope valueScope(v4);
 
-    Module module(v4->debugger() != 0);
+    Module module(v4->debugger() != nullptr);
 
     Engine ee, *engine = &ee;
     Lexer lexer(engine);
@@ -149,10 +149,10 @@ ReturnedValue Script::run()
     if (qmlContext.isUndefined()) {
         TemporaryAssignment<Function*> savedGlobalCode(engine->globalCode, vmFunction);
 
-        return vmFunction->call(engine->globalObject, 0, 0, context);
+        return vmFunction->call(engine->globalObject, nullptr, 0, context);
     } else {
         Scoped<QmlContext> qml(valueScope, qmlContext.value());
-        return vmFunction->call(0, 0, 0, qml);
+        return vmFunction->call(nullptr, nullptr, 0, qml);
     }
 }
 
@@ -199,14 +199,14 @@ QQmlRefPointer<QV4::CompiledData::CompilationUnit> Script::precompile(QV4::Compi
     if (!errors.isEmpty()) {
         if (reportedErrors)
             *reportedErrors << errors;
-        return 0;
+        return nullptr;
     }
 
     Program *program = AST::cast<Program *>(parser.rootNode());
     if (!program) {
         // if parsing was successful, and we have no program, then
         // we're done...:
-        return 0;
+        return nullptr;
     }
 
     Codegen cg(unitGenerator, /*strict mode*/false);
@@ -216,7 +216,7 @@ QQmlRefPointer<QV4::CompiledData::CompilationUnit> Script::precompile(QV4::Compi
     if (!errors.isEmpty()) {
         if (reportedErrors)
             *reportedErrors << errors;
-        return 0;
+        return nullptr;
     }
 
     return cg.generateCompilationUnit(/*generate unit data*/false);
diff --git a/src/qml/jsruntime/qv4script_p.h b/src/qml/jsruntime/qv4script_p.h
index 6ba405f828..24291b9aa6 100644
--- a/src/qml/jsruntime/qv4script_p.h
+++ b/src/qml/jsruntime/qv4script_p.h
@@ -68,11 +68,11 @@ struct Q_QML_EXPORT Script {
     Script(ExecutionContext *scope, QV4::Compiler::CompilationMode mode, const QString &sourceCode, const QString &source = QString(), int line = 1, int column = 0)
         : sourceFile(source), line(line), column(column), sourceCode(sourceCode)
         , context(scope), strictMode(false), inheritContext(false), parsed(false), compilationMode(mode)
-        , vmFunction(0), parseAsBinding(false) {}
+        , vmFunction(nullptr), parseAsBinding(false) {}
     Script(ExecutionEngine *engine, QmlContext *qml, const QString &sourceCode, const QString &source = QString(), int line = 1, int column = 0)
         : sourceFile(source), line(line), column(column), sourceCode(sourceCode)
         , context(engine->rootContext()), strictMode(false), inheritContext(true), parsed(false)
-        , vmFunction(0), parseAsBinding(true) {
+        , vmFunction(nullptr), parseAsBinding(true) {
         if (qml)
             qmlContext.set(engine, *qml);
     }
@@ -100,7 +100,7 @@ struct Q_QML_EXPORT Script {
     static QQmlRefPointer<CompiledData::CompilationUnit> precompile(
             QV4::Compiler::Module *module, Compiler::JSUnitGenerator *unitGenerator,
             const QString &fileName, const QString &finalUrl, const QString &source,
-            QList<QQmlError> *reportedErrors = 0, QQmlJS::Directives *directivesCollector = 0);
+            QList<QQmlError> *reportedErrors = nullptr, QQmlJS::Directives *directivesCollector = nullptr);
     static Script *createFromFileOrCache(ExecutionEngine *engine, QmlContext *qmlContext, const QString &fileName, const QUrl &originalUrl);
 
     static ReturnedValue evaluate(ExecutionEngine *engine, const QString &script, QmlContext *qmlContext);
diff --git a/src/qml/jsruntime/qv4sequenceobject.cpp b/src/qml/jsruntime/qv4sequenceobject.cpp
index 78413f1b0e..7d29d0b517 100644
--- a/src/qml/jsruntime/qv4sequenceobject.cpp
+++ b/src/qml/jsruntime/qv4sequenceobject.cpp
@@ -340,7 +340,7 @@ public:
 
     void containerAdvanceIterator(ObjectIterator *it, Value *name, uint *index, Property *p, PropertyAttributes *attrs)
     {
-        name->setM(0);
+        name->setM(nullptr);
         *index = UINT_MAX;
 
         if (d()->isReference) {
@@ -535,7 +535,7 @@ public:
     {
         Q_ASSERT(d()->object);
         Q_ASSERT(d()->isReference);
-        void *a[] = { d()->container, 0 };
+        void *a[] = { d()->container, nullptr };
         QMetaObject::metacall(d()->object, QMetaObject::ReadProperty, d()->propertyIndex, a);
     }
 
@@ -545,7 +545,7 @@ public:
         Q_ASSERT(d()->isReference);
         int status = -1;
         QQmlPropertyData::WriteFlags flags = QQmlPropertyData::DontRemoveBinding;
-        void *a[] = { d()->container, 0, &status, &flags };
+        void *a[] = { d()->container, nullptr, &status, &flags };
         QMetaObject::metacall(d()->object, QMetaObject::WriteProperty, d()->propertyIndex, a);
     }
 
diff --git a/src/qml/jsruntime/qv4sparsearray.cpp b/src/qml/jsruntime/qv4sparsearray.cpp
index f295e74adc..2a3e28bf63 100644
--- a/src/qml/jsruntime/qv4sparsearray.cpp
+++ b/src/qml/jsruntime/qv4sparsearray.cpp
@@ -89,20 +89,20 @@ const SparseArrayNode *SparseArrayNode::previousNode() const
 
 SparseArrayNode *SparseArrayNode::copy(SparseArray *d) const
 {
-    SparseArrayNode *n = d->createNode(size_left, 0, false);
+    SparseArrayNode *n = d->createNode(size_left, nullptr, false);
     n->value = value;
     n->setColor(color());
     if (left) {
         n->left = left->copy(d);
         n->left->setParent(n);
     } else {
-        n->left = 0;
+        n->left = nullptr;
     }
     if (right) {
         n->right = right->copy(d);
         n->right->setParent(n);
     } else {
-        n->right = 0;
+        n->right = nullptr;
     }
     return n;
 }
@@ -119,7 +119,7 @@ void SparseArray::rotateLeft(SparseArrayNode *x)
     SparseArrayNode *&root = header.left;
     SparseArrayNode *y = x->right;
     x->right = y->left;
-    if (y->left != 0)
+    if (y->left != nullptr)
         y->left->setParent(x);
     y->setParent(x->parent());
     if (x == root)
@@ -146,7 +146,7 @@ void SparseArray::rotateRight(SparseArrayNode *x)
     SparseArrayNode *&root = header.left;
     SparseArrayNode *y = x->left;
     x->left = y->right;
-    if (y->right != 0)
+    if (y->right != nullptr)
         y->right->setParent(x);
     y->setParent(x->parent());
     if (x == root)
@@ -209,7 +209,7 @@ void SparseArray::deleteNode(SparseArrayNode *z)
     SparseArrayNode *y = z;
     SparseArrayNode *x;
     SparseArrayNode *x_parent;
-    if (y->left == 0) {
+    if (y->left == nullptr) {
         x = y->right;
         if (y == mostLeftNode) {
             if (x)
@@ -217,11 +217,11 @@ void SparseArray::deleteNode(SparseArrayNode *z)
             else
                 mostLeftNode = y->parent();
         }
-    } else if (y->right == 0) {
+    } else if (y->right == nullptr) {
             x = y->left;
     } else {
         y = y->right;
-        while (y->left != 0)
+        while (y->left != nullptr)
             y = y->left;
         x = y->right;
     }
@@ -261,7 +261,7 @@ void SparseArray::deleteNode(SparseArrayNode *z)
         y->size_left = 0;
     }
     if (y->color() != SparseArrayNode::Red) {
-        while (x != root && (x == 0 || x->color() == SparseArrayNode::Black)) {
+        while (x != root && (x == nullptr || x->color() == SparseArrayNode::Black)) {
             if (x == x_parent->left) {
                 SparseArrayNode *w = x_parent->right;
                 if (w->color() == SparseArrayNode::Red) {
@@ -270,13 +270,13 @@ void SparseArray::deleteNode(SparseArrayNode *z)
                     rotateLeft(x_parent);
                     w = x_parent->right;
                 }
-                if ((w->left == 0 || w->left->color() == SparseArrayNode::Black) &&
-                    (w->right == 0 || w->right->color() == SparseArrayNode::Black)) {
+                if ((w->left == nullptr || w->left->color() == SparseArrayNode::Black) &&
+                    (w->right == nullptr || w->right->color() == SparseArrayNode::Black)) {
                     w->setColor(SparseArrayNode::Red);
                     x = x_parent;
                     x_parent = x_parent->parent();
                 } else {
-                    if (w->right == 0 || w->right->color() == SparseArrayNode::Black) {
+                    if (w->right == nullptr || w->right->color() == SparseArrayNode::Black) {
                         if (w->left)
                             w->left->setColor(SparseArrayNode::Black);
                         w->setColor(SparseArrayNode::Red);
@@ -298,13 +298,13 @@ void SparseArray::deleteNode(SparseArrayNode *z)
                 rotateRight(x_parent);
                 w = x_parent->left;
             }
-            if ((w->right == 0 || w->right->color() == SparseArrayNode::Black) &&
-                (w->left == 0 || w->left->color() == SparseArrayNode::Black)) {
+            if ((w->right == nullptr || w->right->color() == SparseArrayNode::Black) &&
+                (w->left == nullptr || w->left->color() == SparseArrayNode::Black)) {
                 w->setColor(SparseArrayNode::Red);
                 x = x_parent;
                 x_parent = x_parent->parent();
             } else {
-                if (w->left == 0 || w->left->color() == SparseArrayNode::Black) {
+                if (w->left == nullptr || w->left->color() == SparseArrayNode::Black) {
                     if (w->right)
                         w->right->setColor(SparseArrayNode::Black);
                     w->setColor(SparseArrayNode::Red);
@@ -363,8 +363,8 @@ SparseArrayNode *SparseArray::createNode(uint sl, SparseArrayNode *parent, bool
     Q_CHECK_PTR(node);
 
     node->p = (quintptr)parent;
-    node->left = 0;
-    node->right = 0;
+    node->left = nullptr;
+    node->right = nullptr;
     node->size_left = sl;
     node->value = UINT_MAX;
     ++numEntries;
@@ -397,15 +397,15 @@ SparseArray::SparseArray()
 {
     freeList = Primitive::emptyValue(UINT_MAX).asReturnedValue();
     header.p = 0;
-    header.left = 0;
-    header.right = 0;
+    header.left = nullptr;
+    header.right = nullptr;
     mostLeftNode = &header;
 }
 
 SparseArray::SparseArray(const SparseArray &other)
 {
     header.p = 0;
-    header.right = 0;
+    header.right = nullptr;
     if (other.header.left) {
         header.left = other.header.left->copy(this);
         header.left->setParent(&header);
diff --git a/src/qml/jsruntime/qv4sparsearray_p.h b/src/qml/jsruntime/qv4sparsearray_p.h
index ca6abcda89..51869b259f 100644
--- a/src/qml/jsruntime/qv4sparsearray_p.h
+++ b/src/qml/jsruntime/qv4sparsearray_p.h
@@ -109,7 +109,7 @@ struct SparseArrayNode
 inline SparseArrayNode *SparseArrayNode::lowerBound(uint akey)
 {
     SparseArrayNode *n = this;
-    SparseArrayNode *last = 0;
+    SparseArrayNode *last = nullptr;
     while (n) {
         if (akey <= n->size_left) {
             last = n;
@@ -126,7 +126,7 @@ inline SparseArrayNode *SparseArrayNode::lowerBound(uint akey)
 inline SparseArrayNode *SparseArrayNode::upperBound(uint akey)
 {
     SparseArrayNode *n = this;
-    SparseArrayNode *last = 0;
+    SparseArrayNode *last = nullptr;
     while (n) {
         if (akey < n->size_left) {
             last = n;
@@ -223,7 +223,7 @@ inline SparseArrayNode *SparseArray::findNode(uint akey) const
         }
     }
 
-    return 0;
+    return nullptr;
 }
 
 inline uint SparseArray::pop_front()
diff --git a/src/qml/jsruntime/qv4string.cpp b/src/qml/jsruntime/qv4string.cpp
index 40280534c4..8f6f50338e 100644
--- a/src/qml/jsruntime/qv4string.cpp
+++ b/src/qml/jsruntime/qv4string.cpp
@@ -174,7 +174,7 @@ void Heap::String::simplifyString() const
     text = result.data_ptr();
     text->ref.ref();
     const ComplexString *cs = static_cast<const ComplexString *>(this);
-    identifier = 0;
+    identifier = nullptr;
     cs->left = cs->right = nullptr;
 
     internalClass->engine->memoryManager->changeUnmanagedHeapSizeUsage(qptrdiff(text->size) * (qptrdiff)sizeof(QChar));
diff --git a/src/qml/jsruntime/qv4string_p.h b/src/qml/jsruntime/qv4string_p.h
index 679cb7329c..5466cc274d 100644
--- a/src/qml/jsruntime/qv4string_p.h
+++ b/src/qml/jsruntime/qv4string_p.h
@@ -282,7 +282,7 @@ struct ComplexString : String {
 
 template<>
 inline const String *Value::as() const {
-    return isManaged() && m()->vtable()->isString ? static_cast<const String *>(this) : 0;
+    return isManaged() && m()->vtable()->isString ? static_cast<const String *>(this) : nullptr;
 }
 
 template<>
diff --git a/src/qml/jsruntime/qv4stringobject.cpp b/src/qml/jsruntime/qv4stringobject.cpp
index 8125aa53b2..e5a02fdc22 100644
--- a/src/qml/jsruntime/qv4stringobject.cpp
+++ b/src/qml/jsruntime/qv4stringobject.cpp
@@ -86,7 +86,7 @@ Heap::String *Heap::StringObject::getIndex(uint index) const
 {
     QString str = string->toQString();
     if (index >= (uint)str.length())
-        return 0;
+        return nullptr;
     return internalClass->engine->newString(str.mid(index, 1));
 }
 
@@ -109,7 +109,7 @@ bool StringObject::deleteIndexedProperty(Managed *m, uint index)
 
 void StringObject::advanceIterator(Managed *m, ObjectIterator *it, Value *name, uint *index, Property *p, PropertyAttributes *attrs)
 {
-    name->setM(0);
+    name->setM(nullptr);
     StringObject *s = static_cast<StringObject *>(m);
     uint slen = s->d()->string->toQString().length();
     if (it->arrayIndex <= slen) {
@@ -717,7 +717,7 @@ ReturnedValue StringPrototype::method_split(const FunctionObject *b, const Value
     Scoped<RegExpObject> re(scope, separatorValue);
     if (re) {
         if (re->value()->pattern->isEmpty()) {
-            re = (RegExpObject *)0;
+            re = (RegExpObject *)nullptr;
             separatorValue = scope.engine->newString();
         }
     }
diff --git a/src/qml/jsruntime/qv4typedarray.cpp b/src/qml/jsruntime/qv4typedarray.cpp
index 4ba31f9b6e..ea1532b8ce 100644
--- a/src/qml/jsruntime/qv4typedarray.cpp
+++ b/src/qml/jsruntime/qv4typedarray.cpp
@@ -399,10 +399,10 @@ void TypedArrayPrototype::init(ExecutionEngine *engine, TypedArrayCtor *ctor)
     ctor->defineReadonlyProperty(engine->id_prototype(), (o = this));
     ctor->defineReadonlyProperty(QStringLiteral("BYTES_PER_ELEMENT"), Primitive::fromInt32(operations[ctor->d()->type].bytesPerElement));
     defineDefaultProperty(engine->id_constructor(), (o = ctor));
-    defineAccessorProperty(QStringLiteral("buffer"), method_get_buffer, 0);
-    defineAccessorProperty(QStringLiteral("byteLength"), method_get_byteLength, 0);
-    defineAccessorProperty(QStringLiteral("byteOffset"), method_get_byteOffset, 0);
-    defineAccessorProperty(QStringLiteral("length"), method_get_length, 0);
+    defineAccessorProperty(QStringLiteral("buffer"), method_get_buffer, nullptr);
+    defineAccessorProperty(QStringLiteral("byteLength"), method_get_byteLength, nullptr);
+    defineAccessorProperty(QStringLiteral("byteOffset"), method_get_byteOffset, nullptr);
+    defineAccessorProperty(QStringLiteral("length"), method_get_length, nullptr);
     defineReadonlyProperty(QStringLiteral("BYTES_PER_ELEMENT"), Primitive::fromInt32(operations[ctor->d()->type].bytesPerElement));
 
     defineDefaultProperty(QStringLiteral("set"), method_set, 1);
@@ -514,7 +514,7 @@ ReturnedValue TypedArrayPrototype::method_set(const FunctionObject *b, const Val
         RETURN_UNDEFINED();
     }
 
-    char *srcCopy = 0;
+    char *srcCopy = nullptr;
     if (buffer->d() == srcBuffer->d()) {
         // same buffer, need to take a temporary copy, to not run into problems
         srcCopy = new char[srcTypedArray->d()->byteLength];
diff --git a/src/qml/jsruntime/qv4value_p.h b/src/qml/jsruntime/qv4value_p.h
index b3f04d69be..97ed13cd91 100644
--- a/src/qml/jsruntime/qv4value_p.h
+++ b/src/qml/jsruntime/qv4value_p.h
@@ -426,7 +426,7 @@ public:
     template <typename T>
     const T *as() const {
         if (!isManaged())
-            return 0;
+            return nullptr;
 
         Q_ASSERT(m()->vtable());
 #if !defined(QT_NO_QOBJECT_CHECK)
@@ -438,7 +438,7 @@ public:
                 return static_cast<const T *>(this);
             vt = vt->parent;
         }
-        return 0;
+        return nullptr;
     }
     template <typename T>
     T *as() {
@@ -474,7 +474,7 @@ public:
     Value &operator=(ReturnedValue v) { _val = v; return *this; }
     Value &operator=(Managed *m) {
         if (!m) {
-            setM(0);
+            setM(nullptr);
         } else {
             _val = reinterpret_cast<Value *>(m)->_val;
         }
diff --git a/src/qml/jsruntime/qv4vme_moth.cpp b/src/qml/jsruntime/qv4vme_moth.cpp
index d44c219d18..feeeee527a 100644
--- a/src/qml/jsruntime/qv4vme_moth.cpp
+++ b/src/qml/jsruntime/qv4vme_moth.cpp
@@ -553,7 +553,7 @@ QV4::ReturnedValue VME::exec(const FunctionObject *fo, const Value *thisObject,
 
     Profiling::FunctionCallProfiler profiler(engine, function); // start execution profiling
     QV4::Debugging::Debugger *debugger = engine->debugger();
-    const uchar *exceptionHandler = 0;
+    const uchar *exceptionHandler = nullptr;
 
     QV4::Value &accumulator = frame.jsFrame->accumulator;
     QV4::ReturnedValue acc = Encode::undefined();
diff --git a/src/qml/memory/qv4mm.cpp b/src/qml/memory/qv4mm.cpp
index 9c51013317..cdda0bf7ef 100644
--- a/src/qml/memory/qv4mm.cpp
+++ b/src/qml/memory/qv4mm.cpp
@@ -186,7 +186,7 @@ struct MemorySegment {
     }
 
     PageReservation pageReservation;
-    Chunk *base = 0;
+    Chunk *base = nullptr;
     quint64 allocatedMap = 0;
     size_t availableBytes = 0;
     uint nChunks = 0;
@@ -203,14 +203,14 @@ Chunk *MemorySegment::allocate(size_t size)
     }
     size_t requiredChunks = (size + sizeof(Chunk) - 1)/sizeof(Chunk);
     uint sequence = 0;
-    Chunk *candidate = 0;
+    Chunk *candidate = nullptr;
     for (uint i = 0; i < nChunks; ++i) {
         if (!testBit(i)) {
             if (!candidate)
                 candidate = base + i;
             ++sequence;
         } else {
-            candidate = 0;
+            candidate = nullptr;
             sequence = 0;
         }
         if (sequence == requiredChunks) {
@@ -221,7 +221,7 @@ Chunk *MemorySegment::allocate(size_t size)
             return candidate;
         }
     }
-    return 0;
+    return nullptr;
 }
 
 struct ChunkAllocator {
@@ -594,7 +594,7 @@ HeapItem *BlockAllocator::allocate(size_t size, bool forceAllocation) {
 
     if (!m) {
         if (!forceAllocation)
-            return 0;
+            return nullptr;
         Chunk *newChunk = chunkAllocator->allocate();
         Q_V4_PROFILE_ALLOC(engine, Chunk::DataSize, Profiling::HeapPage);
         chunks.push_back(newChunk);
@@ -617,7 +617,7 @@ done:
 
 void BlockAllocator::sweep()
 {
-    nextFree = 0;
+    nextFree = nullptr;
     nFree = 0;
     memset(freeBins, 0, sizeof(freeBins));
 
diff --git a/src/qml/memory/qv4mm_p.h b/src/qml/memory/qv4mm_p.h
index 7dc73bdacc..1ef54ffcc6 100644
--- a/src/qml/memory/qv4mm_p.h
+++ b/src/qml/memory/qv4mm_p.h
@@ -105,7 +105,7 @@ struct BlockAllocator {
     void collectGrayItems(MarkStack *markStack);
 
     // bump allocations
-    HeapItem *nextFree = 0;
+    HeapItem *nextFree = nullptr;
     size_t nFree = 0;
     size_t usedSlotsAfterLastSweep = 0;
     HeapItem *freeBins[NumBins];
@@ -229,7 +229,7 @@ public:
     {
         Scope scope(engine);
         Scoped<ObjectType> t(scope, allocateObject<ObjectType>(ic));
-        Q_ASSERT(t->internalClass()->prototype == (prototype ? prototype->d() : 0));
+        Q_ASSERT(t->internalClass()->prototype == (prototype ? prototype->d() : nullptr));
         Q_UNUSED(prototype);
         t->d_unchecked()->init();
         return t->d();
@@ -240,7 +240,7 @@ public:
     {
         Scope scope(engine);
         Scoped<ObjectType> t(scope, allocateObject<ObjectType>(ic));
-        Q_ASSERT(t->internalClass()->prototype == (prototype ? prototype->d() : 0));
+        Q_ASSERT(t->internalClass()->prototype == (prototype ? prototype->d() : nullptr));
         Q_UNUSED(prototype);
         t->d_unchecked()->init(arg1);
         return t->d();
@@ -251,7 +251,7 @@ public:
     {
         Scope scope(engine);
         Scoped<ObjectType> t(scope, allocateObject<ObjectType>(ic));
-        Q_ASSERT(t->internalClass()->prototype == (prototype ? prototype->d() : 0));
+        Q_ASSERT(t->internalClass()->prototype == (prototype ? prototype->d() : nullptr));
         Q_UNUSED(prototype);
         t->d_unchecked()->init(arg1, arg2);
         return t->d();
@@ -262,7 +262,7 @@ public:
     {
         Scope scope(engine);
         Scoped<ObjectType> t(scope, allocateObject<ObjectType>(ic));
-        Q_ASSERT(t->internalClass()->prototype == (prototype ? prototype->d() : 0));
+        Q_ASSERT(t->internalClass()->prototype == (prototype ? prototype->d() : nullptr));
         Q_UNUSED(prototype);
         t->d_unchecked()->init(arg1, arg2, arg3);
         return t->d();
@@ -273,7 +273,7 @@ public:
     {
         Scope scope(engine);
         Scoped<ObjectType> t(scope, allocateObject<ObjectType>(ic));
-        Q_ASSERT(t->internalClass()->prototype == (prototype ? prototype->d() : 0));
+        Q_ASSERT(t->internalClass()->prototype == (prototype ? prototype->d() : nullptr));
         Q_UNUSED(prototype);
         t->d_unchecked()->init(arg1, arg2, arg3, arg4);
         return t->d();
diff --git a/src/qml/memory/qv4mmdefs_p.h b/src/qml/memory/qv4mmdefs_p.h
index 4e64ba8118..3e2bae46c2 100644
--- a/src/qml/memory/qv4mmdefs_p.h
+++ b/src/qml/memory/qv4mmdefs_p.h
@@ -272,9 +272,9 @@ Q_STATIC_ASSERT((1 << Chunk::BitShift) == Chunk::Bits);
 
 struct MarkStack {
     MarkStack(ExecutionEngine *engine);
-    Heap::Base **top = 0;
-    Heap::Base **base = 0;
-    Heap::Base **limit = 0;
+    Heap::Base **top = nullptr;
+    Heap::Base **base = nullptr;
+    Heap::Base **limit = nullptr;
     ExecutionEngine *engine;
     void push(Heap::Base *m) {
         *top = m;
diff --git a/src/qml/parser/qqmljsast.cpp b/src/qml/parser/qqmljsast.cpp
index 2433522f42..34657a7d48 100644
--- a/src/qml/parser/qqmljsast.cpp
+++ b/src/qml/parser/qqmljsast.cpp
@@ -61,22 +61,22 @@ void Node::accept(Node *node, Visitor *visitor)
 
 ExpressionNode *Node::expressionCast()
 {
-    return 0;
+    return nullptr;
 }
 
 BinaryExpression *Node::binaryExpressionCast()
 {
-    return 0;
+    return nullptr;
 }
 
 Statement *Node::statementCast()
 {
-    return 0;
+    return nullptr;
 }
 
 UiObjectMember *Node::uiObjectMemberCast()
 {
-    return 0;
+    return nullptr;
 }
 
 ExpressionNode *ExpressionNode::expressionCast()
diff --git a/src/qml/parser/qqmljsast_p.h b/src/qml/parser/qqmljsast_p.h
index 7291cf0d3d..acbd88d466 100644
--- a/src/qml/parser/qqmljsast_p.h
+++ b/src/qml/parser/qqmljsast_p.h
@@ -457,11 +457,11 @@ public:
     QQMLJS_DECLARE_AST_NODE(ArrayLiteral)
 
     ArrayLiteral(Elision *e):
-        elements (0), elision (e)
+        elements (nullptr), elision (e)
         { kind = K; }
 
     ArrayLiteral(ElementList *elts):
-        elements (elts), elision (0)
+        elements (elts), elision (nullptr)
         { kind = K; }
 
     ArrayLiteral(ElementList *elts, Elision *e):
@@ -490,7 +490,7 @@ public:
     QQMLJS_DECLARE_AST_NODE(ObjectLiteral)
 
     ObjectLiteral():
-        properties (0) { kind = K; }
+        properties (nullptr) { kind = K; }
 
     ObjectLiteral(PropertyAssignmentList *plist):
         properties (plist) { kind = K; }
@@ -535,7 +535,7 @@ public:
     inline Elision *finish ()
     {
         Elision *front = next;
-        next = 0;
+        next = nullptr;
         return front;
     }
 
@@ -564,7 +564,7 @@ public:
     inline ElementList *finish ()
     {
         ElementList *front = next;
-        next = 0;
+        next = nullptr;
         return front;
     }
 
@@ -641,7 +641,7 @@ public:
     inline PropertyAssignmentList *finish ()
     {
         PropertyAssignmentList *front = next;
-        next = 0;
+        next = nullptr;
         return front;
     }
 
@@ -693,7 +693,7 @@ public:
     };
 
     PropertyGetterSetter(PropertyName *n, FunctionBody *b)
-        : PropertyAssignment(n), type(Getter), formals(0), functionBody (b)
+        : PropertyAssignment(n), type(Getter), formals(nullptr), functionBody (b)
     { kind = K; }
 
     PropertyGetterSetter(PropertyName *n, FormalParameterList *f, FunctionBody *b)
@@ -917,7 +917,7 @@ public:
     inline ArgumentList *finish ()
     {
         ArgumentList *front = next;
-        next = 0;
+        next = nullptr;
         return front;
     }
 
@@ -1281,7 +1281,7 @@ public:
     inline StatementList *finish ()
     {
         StatementList *front = next;
-        next = 0;
+        next = nullptr;
         return front;
     }
 
@@ -1377,9 +1377,9 @@ public:
     inline VariableDeclarationList *finish(VariableDeclaration::VariableScope s)
     {
         VariableDeclarationList *front = next;
-        next = 0;
+        next = nullptr;
         VariableDeclarationList *vdl;
-        for (vdl = front; vdl != 0; vdl = vdl->next) {
+        for (vdl = front; vdl != nullptr; vdl = vdl->next) {
             vdl->declaration->scope = s;
         }
         return front;
@@ -1436,7 +1436,7 @@ class QML_PARSER_EXPORT IfStatement: public Statement
 public:
     QQMLJS_DECLARE_AST_NODE(IfStatement)
 
-    IfStatement(ExpressionNode *e, Statement *t, Statement *f = 0):
+    IfStatement(ExpressionNode *e, Statement *t, Statement *f = nullptr):
         expression (e), ok (t), ko (f)
         { kind = K; }
 
@@ -1727,7 +1727,7 @@ class QML_PARSER_EXPORT CaseBlock: public Node
 public:
     QQMLJS_DECLARE_AST_NODE(CaseBlock)
 
-    CaseBlock(CaseClauses *c, DefaultClause *d = 0, CaseClauses *r = 0):
+    CaseBlock(CaseClauses *c, DefaultClause *d = nullptr, CaseClauses *r = nullptr):
         clauses (c), defaultClause (d), moreClauses (r)
         { kind = K; }
 
@@ -1824,7 +1824,7 @@ public:
     inline CaseClauses *finish ()
     {
         CaseClauses *front = next;
-        next = 0;
+        next = nullptr;
         return front;
     }
 
@@ -1960,11 +1960,11 @@ public:
         { kind = K; }
 
     TryStatement(Statement *stmt, Finally *f):
-        statement (stmt), catchExpression (0), finallyExpression (f)
+        statement (stmt), catchExpression (nullptr), finallyExpression (f)
         { kind = K; }
 
     TryStatement(Statement *stmt, Catch *c):
-        statement (stmt), catchExpression (c), finallyExpression (0)
+        statement (stmt), catchExpression (c), finallyExpression (nullptr)
         { kind = K; }
 
     void accept0(Visitor *visitor) override;
@@ -2058,7 +2058,7 @@ public:
     inline FormalParameterList *finish ()
     {
         FormalParameterList *front = next;
-        next = 0;
+        next = nullptr;
         return front;
     }
 
@@ -2106,7 +2106,7 @@ public:
     inline SourceElements *finish ()
     {
         SourceElements *front = next;
-        next = 0;
+        next = nullptr;
         return front;
     }
 
@@ -2240,7 +2240,7 @@ public:
     UiQualifiedId *finish()
     {
         UiQualifiedId *head = next;
-        next = 0;
+        next = nullptr;
         return head;
     }
 
@@ -2264,7 +2264,7 @@ public:
     QQMLJS_DECLARE_AST_NODE(UiImport)
 
     UiImport(const QStringRef &fileName)
-        : fileName(fileName), importUri(0)
+        : fileName(fileName), importUri(nullptr)
     { kind = K; }
 
     UiImport(UiQualifiedId *uri)
@@ -2328,7 +2328,7 @@ public:
     UiObjectMemberList *finish()
     {
         UiObjectMemberList *head = next;
-        next = 0;
+        next = nullptr;
         return head;
     }
 
@@ -2357,7 +2357,7 @@ public:
     UiQualifiedPragmaId *finish()
     {
         UiQualifiedPragmaId *head = next;
-        next = 0;
+        next = nullptr;
         return head;
     }
 
@@ -2430,7 +2430,7 @@ public:
     UiHeaderItemList *finish()
     {
         UiHeaderItemList *head = next;
-        next = 0;
+        next = nullptr;
         return head;
     }
 
@@ -2509,7 +2509,7 @@ public:
     UiArrayMemberList *finish()
     {
         UiArrayMemberList *head = next;
-        next = 0;
+        next = nullptr;
         return head;
     }
 
@@ -2570,7 +2570,7 @@ public:
     inline UiParameterList *finish ()
     {
         UiParameterList *front = next;
-        next = 0;
+        next = nullptr;
         return front;
     }
 
@@ -2590,13 +2590,13 @@ public:
 
     UiPublicMember(UiQualifiedId *memberType,
                    const QStringRef &name)
-        : type(Property), memberType(memberType), name(name), statement(0), binding(0), isDefaultMember(false), isReadonlyMember(false), parameters(0)
+        : type(Property), memberType(memberType), name(name), statement(nullptr), binding(nullptr), isDefaultMember(false), isReadonlyMember(false), parameters(nullptr)
     { kind = K; }
 
     UiPublicMember(UiQualifiedId *memberType,
                    const QStringRef &name,
                    Statement *statement)
-        : type(Property), memberType(memberType), name(name), statement(statement), binding(0), isDefaultMember(false), isReadonlyMember(false), parameters(0)
+        : type(Property), memberType(memberType), name(name), statement(statement), binding(nullptr), isDefaultMember(false), isReadonlyMember(false), parameters(nullptr)
     { kind = K; }
 
     void accept0(Visitor *visitor) override;
@@ -2825,7 +2825,7 @@ public:
     UiEnumMemberList *finish()
     {
         UiEnumMemberList *head = next;
-        next = 0;
+        next = nullptr;
         return head;
     }
 
diff --git a/src/qml/parser/qqmljsengine_p.cpp b/src/qml/parser/qqmljsengine_p.cpp
index 7a6d9c3826..b4f0debf85 100644
--- a/src/qml/parser/qqmljsengine_p.cpp
+++ b/src/qml/parser/qqmljsengine_p.cpp
@@ -120,7 +120,7 @@ double integerFromString(const QString &str, int radix)
 
 
 Engine::Engine()
-    : _lexer(0), _directives(0)
+    : _lexer(nullptr), _directives(nullptr)
 { }
 
 Engine::~Engine()
diff --git a/src/qml/parser/qqmljsgrammar.cpp b/src/qml/parser/qqmljsgrammar.cpp
index f345990ff9..2aaeb385e3 100644
--- a/src/qml/parser/qqmljsgrammar.cpp
+++ b/src/qml/parser/qqmljsgrammar.cpp
@@ -49,11 +49,11 @@ const char *const QQmlJSGrammar::spell [] = {
     "if", "in", "instanceof", "{", "[", "<=", "(", "<", "<<", "<<=",
     "-", "-=", "--", "new", "!", "!=", "!==", "numeric literal", "|", "|=",
     "||", "+", "+=", "++", "?", "}", "]", "%", "%=", "return",
-    ")", ";", 0, "*", "*=", "string literal", "property", "signal", "readonly", "switch",
+    ")", ";", nullptr, "*", "*=", "string literal", "property", "signal", "readonly", "switch",
     "this", "throw", "~", "try", "typeof", "var", "void", "while", "with", "^",
     "^=", "null", "true", "false", "const", "let", "debugger", "reserved word", "multiline string literal", "comment",
-    0, "enum", "public", "import", "pragma", "as", "on", "get", "set", 0,
-    0, 0, 0, 0, 0, 0, 0, 0
+    nullptr, "enum", "public", "import", "pragma", "as", "on", "get", "set", nullptr,
+    nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr
 };
 
 const short QQmlJSGrammar::lhs [] = {
diff --git a/src/qml/parser/qqmljslexer.cpp b/src/qml/parser/qqmljslexer.cpp
index bf56307e39..aab9025a08 100644
--- a/src/qml/parser/qqmljslexer.cpp
+++ b/src/qml/parser/qqmljslexer.cpp
@@ -85,11 +85,11 @@ static inline QChar convertUnicode(QChar c1, QChar c2, QChar c3, QChar c4)
 
 Lexer::Lexer(Engine *engine)
     : _engine(engine)
-    , _codePtr(0)
-    , _endPtr(0)
-    , _lastLinePtr(0)
-    , _tokenLinePtr(0)
-    , _tokenStartPtr(0)
+    , _codePtr(nullptr)
+    , _endPtr(nullptr)
+    , _lastLinePtr(nullptr)
+    , _tokenLinePtr(nullptr)
+    , _tokenStartPtr(nullptr)
     , _char(QLatin1Char('\n'))
     , _errorCode(NoError)
     , _currentLineNumber(0)
@@ -589,7 +589,7 @@ again:
             chars.append('\0');
 
             const char *begin = chars.constData();
-            const char *end = 0;
+            const char *end = nullptr;
             bool ok = false;
 
             _tokenValue = qstrtod(begin, &end, &ok);
@@ -915,7 +915,7 @@ int Lexer::scanNumber(QChar ch)
                 scanChar();
             }
             buf.append('\0');
-            _tokenValue = strtod(buf.constData(), 0);
+            _tokenValue = strtod(buf.constData(), nullptr);
             return T_NUMERIC_LITERAL;
         }
     } else if (_char.isDigit() && !qmlMode()) {
@@ -1010,7 +1010,7 @@ int Lexer::scanNumber(QChar ch)
     chars.append('\0');
 
     const char *begin = chars.constData();
-    const char *end = 0;
+    const char *end = nullptr;
     bool ok = false;
 
     _tokenValue = qstrtod(begin, &end, &ok);
diff --git a/src/qml/parser/qqmljsmemorypool_p.h b/src/qml/parser/qqmljsmemorypool_p.h
index 536f5d4239..5682d66f45 100644
--- a/src/qml/parser/qqmljsmemorypool_p.h
+++ b/src/qml/parser/qqmljsmemorypool_p.h
@@ -72,11 +72,11 @@ class QML_PARSER_EXPORT MemoryPool : public QSharedData
 
 public:
     MemoryPool()
-        : _blocks(0),
+        : _blocks(nullptr),
           _allocatedBlocks(0),
           _blockCount(-1),
-          _ptr(0),
-          _end(0)
+          _ptr(nullptr),
+          _end(nullptr)
     { }
 
     ~MemoryPool()
@@ -105,7 +105,7 @@ public:
     void reset()
     {
         _blockCount = -1;
-        _ptr = _end = 0;
+        _ptr = _end = nullptr;
     }
 
     template <typename Tp> Tp *New() { return new (this->allocate(sizeof(Tp))) Tp(); }
@@ -125,7 +125,7 @@ private:
             Q_CHECK_PTR(_blocks);
 
             for (int index = _blockCount; index < _allocatedBlocks; ++index)
-                _blocks[index] = 0;
+                _blocks[index] = nullptr;
         }
 
         char *&block = _blocks[_blockCount];
diff --git a/src/qml/parser/qqmljsparser.cpp b/src/qml/parser/qqmljsparser.cpp
index df16a24bcc..f1beec6387 100644
--- a/src/qml/parser/qqmljsparser.cpp
+++ b/src/qml/parser/qqmljsparser.cpp
@@ -87,14 +87,14 @@ Parser::Parser(Engine *engine):
     pool(engine->pool()),
     tos(0),
     stack_size(0),
-    sym_stack(0),
-    state_stack(0),
-    location_stack(0),
-    string_stack(0),
-    program(0),
+    sym_stack(nullptr),
+    state_stack(nullptr),
+    location_stack(nullptr),
+    string_stack(nullptr),
+    program(nullptr),
     yylval(0),
-    first_token(0),
-    last_token(0)
+    first_token(nullptr),
+    last_token(nullptr)
 {
 }
 
@@ -143,7 +143,7 @@ AST::UiQualifiedId *Parser::reparseAsQualifiedId(AST::ExpressionNode *expr)
         return currentId->finish();
     }
 
-    return 0;
+    return nullptr;
 }
 
 AST::UiQualifiedPragmaId *Parser::reparseAsQualifiedPragmaId(AST::ExpressionNode *expr)
@@ -155,7 +155,7 @@ AST::UiQualifiedPragmaId *Parser::reparseAsQualifiedPragmaId(AST::ExpressionNode
         return q->finish();
     }
 
-    return 0;
+    return nullptr;
 }
 
 
@@ -188,7 +188,7 @@ bool Parser::parse(int startToken)
     }
 
     tos = -1;
-    program = 0;
+    program = nullptr;
 
     do {
         if (++tos == stack_size)
@@ -315,7 +315,7 @@ case 24: {
 } break;
 
 case 25: {
-    AST::UiPragma *node = 0;
+    AST::UiPragma *node = nullptr;
 
     if (AST::UiQualifiedPragmaId *qualifiedId = reparseAsQualifiedPragmaId(sym(2).Expression)) {
         node = new (pool) AST::UiPragma(qualifiedId);
@@ -334,7 +334,7 @@ case 25: {
 } break;
 
 case 26: {
-    AST::UiImport *node = 0;
+    AST::UiImport *node = nullptr;
 
     if (AST::StringLiteral *importIdLiteral = AST::cast<AST::StringLiteral *>(sym(2).Expression)) {
         node = new (pool) AST::UiImport(importIdLiteral->value);
@@ -357,7 +357,7 @@ case 26: {
 } break;
 
 case 27: {
-    sym(1).Node = 0;
+    sym(1).Node = nullptr;
 } break;
 
 case 28: {
@@ -386,7 +386,7 @@ case 32: {
 } break;
 
 case 33: {
-    AST::UiObjectInitializer *node = new (pool) AST::UiObjectInitializer((AST::UiObjectMemberList*)0);
+    AST::UiObjectInitializer *node = new (pool) AST::UiObjectInitializer((AST::UiObjectMemberList*)nullptr);
     node->lbraceToken = loc(1);
     node->rbraceToken = loc(2);
     sym(1).Node = node;
@@ -462,7 +462,7 @@ case 51: {
 } break;
 
 case 52: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
 case 53: {
@@ -594,7 +594,7 @@ case 71: {
 
     AST::UiQualifiedId *propertyName = new (pool) AST::UiQualifiedId(stringRef(6));
     propertyName->identifierToken = loc(6);
-    propertyName->next = 0;
+    propertyName->next = nullptr;
 
     AST::UiArrayBinding *binding = new (pool) AST::UiArrayBinding(
         propertyName, sym(9).UiArrayMemberList->finish());
@@ -616,7 +616,7 @@ case 72: {
 
     AST::UiQualifiedId *propertyName = new (pool) AST::UiQualifiedId(stringRef(3));
     propertyName->identifierToken = loc(3);
-    propertyName->next = 0;
+    propertyName->next = nullptr;
 
     AST::UiObjectBinding *binding = new (pool) AST::UiObjectBinding(
       propertyName, sym(5).UiQualifiedId, sym(6).UiObjectInitializer);
@@ -638,7 +638,7 @@ case 73: {
 
     AST::UiQualifiedId *propertyName = new (pool) AST::UiQualifiedId(stringRef(4));
     propertyName->identifierToken = loc(4);
-    propertyName->next = 0;
+    propertyName->next = nullptr;
 
     AST::UiObjectBinding *binding = new (pool) AST::UiObjectBinding(
       propertyName, sym(6).UiQualifiedId, sym(7).UiObjectInitializer);
@@ -770,7 +770,7 @@ case 97: {
 } break;
 
 case 98: {
-  AST::ArrayLiteral *node = new (pool) AST::ArrayLiteral((AST::Elision *) 0);
+  AST::ArrayLiteral *node = new (pool) AST::ArrayLiteral((AST::Elision *) nullptr);
   node->lbracketToken = loc(1);
   node->rbracketToken = loc(2);
   sym(1).Node = node;
@@ -792,7 +792,7 @@ case 100: {
 
 case 101: {
   AST::ArrayLiteral *node = new (pool) AST::ArrayLiteral(sym(2).ElementList->finish (),
-    (AST::Elision *) 0);
+    (AST::Elision *) nullptr);
   node->lbracketToken = loc(1);
   node->commaToken = loc(3);
   node->rbracketToken = loc(4);
@@ -809,7 +809,7 @@ case 102: {
 } break;
 
 case 103: {
-  AST::ObjectLiteral *node = 0;
+  AST::ObjectLiteral *node = nullptr;
   if (sym(2).Node)
     node = new (pool) AST::ObjectLiteral(
         sym(2).PropertyAssignmentList->finish ());
@@ -846,7 +846,7 @@ case 106: {
   if (AST::UiQualifiedId *qualifiedId = reparseAsQualifiedId(sym(1).Expression)) {
     sym(1).UiQualifiedId = qualifiedId;
   } else {
-    sym(1).UiQualifiedId = 0;
+    sym(1).UiQualifiedId = nullptr;
 
     diagnostic_messages.append(DiagnosticMessage(DiagnosticMessage::Error, loc(1),
       QLatin1String("Expected a qualified name id")));
@@ -856,7 +856,7 @@ case 106: {
 } break;
 
 case 107: {
-  sym(1).Node = new (pool) AST::ElementList((AST::Elision *) 0, sym(1).Expression);
+  sym(1).Node = new (pool) AST::ElementList((AST::Elision *) nullptr, sym(1).Expression);
 } break;
 
 case 108: {
@@ -865,7 +865,7 @@ case 108: {
 
 case 109: {
   AST::ElementList *node = new (pool) AST::ElementList(sym(1).ElementList,
-    (AST::Elision *) 0, sym(3).Expression);
+    (AST::Elision *) nullptr, sym(3).Expression);
   node->commaToken = loc(2);
   sym(1).Node = node;
 } break;
@@ -1010,7 +1010,7 @@ case 167: {
 } break;
 
 case 168: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
 case 169: {
@@ -1437,7 +1437,7 @@ case 262: {
 } break;
 
 case 263: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
 case 266: {
@@ -1447,7 +1447,7 @@ case 266: {
 } break;
 
 case 267: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
 case 284: {
@@ -1466,7 +1466,7 @@ case 286: {
 } break;
 
 case 287: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
 case 288: {
@@ -1537,7 +1537,7 @@ case 300: {
 } break;
 
 case 301: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
 case 303: {
@@ -1546,7 +1546,7 @@ case 303: {
 } break;
 
 case 304: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
 case 306: {
@@ -1718,7 +1718,7 @@ case 334: {
 } break;
 
 case 335: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
 case 336: {
@@ -1840,7 +1840,7 @@ case 354: {
 } break;
 
 case 355: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
 case 356: {
@@ -1848,7 +1848,7 @@ case 356: {
 } break;
 
 case 357: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
 case 359: {
@@ -1876,7 +1876,7 @@ case 365: {
 } break;
 
 case 366: {
-  sym(1).Node = 0;
+  sym(1).Node = nullptr;
 } break;
 
             } // switch
diff --git a/src/qml/parser/qqmljsparser_p.h b/src/qml/parser/qqmljsparser_p.h
index 9dfee70f3a..b4aecd2f08 100644
--- a/src/qml/parser/qqmljsparser_p.h
+++ b/src/qml/parser/qqmljsparser_p.h
@@ -146,7 +146,7 @@ public:
     AST::Statement *statement() const
     {
         if (! program)
-            return 0;
+            return nullptr;
 
         return program->statementCast();
     }
@@ -154,7 +154,7 @@ public:
     AST::ExpressionNode *expression() const
     {
         if (! program)
-            return 0;
+            return nullptr;
 
         return program->expressionCast();
     }
@@ -162,7 +162,7 @@ public:
     AST::UiObjectMember *uiObjectMember() const
     {
         if (! program)
-            return 0;
+            return nullptr;
 
         return program->uiObjectMemberCast();
     }
diff --git a/src/qml/qml/ftw/qbitfield_p.h b/src/qml/qml/ftw/qbitfield_p.h
index 8f35842249..92017580d6 100644
--- a/src/qml/qml/ftw/qbitfield_p.h
+++ b/src/qml/qml/ftw/qbitfield_p.h
@@ -77,12 +77,12 @@ private:
 };
 
 QBitField::QBitField()
-: bits(0), ownData(0), data(0)
+: bits(0), ownData(nullptr), data(nullptr)
 {
 }
 
 QBitField::QBitField(const quint32 *bitData, int bitCount)
-: bits((quint32)bitCount), ownData(0), data(bitData)
+: bits((quint32)bitCount), ownData(nullptr), data(bitData)
 {
 }
 
diff --git a/src/qml/qml/ftw/qfieldlist_p.h b/src/qml/qml/ftw/qfieldlist_p.h
index d83d708b5e..2bf07fb20d 100644
--- a/src/qml/qml/ftw/qfieldlist_p.h
+++ b/src/qml/qml/ftw/qfieldlist_p.h
@@ -141,7 +141,7 @@ N *QForwardFieldList<N, nextMember>::takeFirst()
     N *value = *_first;
     if (value) {
         _first = next(value);
-        value->*nextMember = 0;
+        value->*nextMember = nullptr;
     }
     return value;
 }
@@ -149,7 +149,7 @@ N *QForwardFieldList<N, nextMember>::takeFirst()
 template<class N, N *N::*nextMember>
 void QForwardFieldList<N, nextMember>::prepend(N *v)
 {
-    Q_ASSERT(v->*nextMember == 0);
+    Q_ASSERT(v->*nextMember == nullptr);
     v->*nextMember = *_first;
     _first = v;
 }
@@ -229,7 +229,7 @@ void QForwardFieldList<N, nextMember>::setFlag2Value(bool v)
 
 template<class N, N *N::*nextMember>
 QFieldList<N, nextMember>::QFieldList()
-: _first(0), _last(0), _flag(0), _count(0)
+: _first(nullptr), _last(nullptr), _flag(0), _count(0)
 {
 }
 
@@ -246,10 +246,10 @@ N *QFieldList<N, nextMember>::takeFirst()
     if (value) {
         _first = next(value);
         if (_last == value) {
-            Q_ASSERT(_first == 0);
-            _last = 0;
+            Q_ASSERT(_first == nullptr);
+            _last = nullptr;
         }
-        value->*nextMember = 0;
+        value->*nextMember = nullptr;
         --_count;
     }
     return value;
@@ -258,7 +258,7 @@ N *QFieldList<N, nextMember>::takeFirst()
 template<class N, N *N::*nextMember>
 void QFieldList<N, nextMember>::append(N *v)
 {
-    Q_ASSERT(v->*nextMember == 0);
+    Q_ASSERT(v->*nextMember == nullptr);
     if (isEmpty()) {
         _first = v;
         _last = v;
@@ -272,7 +272,7 @@ void QFieldList<N, nextMember>::append(N *v)
 template<class N, N *N::*nextMember>
 void QFieldList<N, nextMember>::prepend(N *v)
 {
-    Q_ASSERT(v->*nextMember == 0);
+    Q_ASSERT(v->*nextMember == nullptr);
     if (isEmpty()) {
         _first = v;
         _last = v;
@@ -375,7 +375,7 @@ void QFieldList<N, nextMember>::copyAndClear(QFieldList<N, nextMember> &o)
     _first = o._first;
     _last = o._last;
     _count = o._count;
-    o._first = o._last = 0;
+    o._first = o._last = nullptr;
     o._count = 0;
 }
 
@@ -391,8 +391,8 @@ void QFieldList<N, nextMember>::copyAndClearAppend(QForwardFieldList<N, nextMemb
 template<class N, N *N::*nextMember>
 void QFieldList<N, nextMember>::copyAndClearPrepend(QForwardFieldList<N, nextMember> &o)
 {
-    _first = 0;
-    _last = 0;
+    _first = nullptr;
+    _last = nullptr;
     _count = 0;
     while (N *n = o.takeFirst()) prepend(n);
 }
diff --git a/src/qml/qml/ftw/qfinitestack_p.h b/src/qml/qml/ftw/qfinitestack_p.h
index f1f1a551d5..9a74199137 100644
--- a/src/qml/qml/ftw/qfinitestack_p.h
+++ b/src/qml/qml/ftw/qfinitestack_p.h
@@ -81,7 +81,7 @@ private:
 
 template<typename T>
 QFiniteStack<T>::QFiniteStack()
-: _array(0), _alloc(0), _size(0)
+: _array(nullptr), _alloc(0), _size(0)
 {
 }
 
@@ -156,7 +156,7 @@ T &QFiniteStack<T>::operator[](int index)
 template<typename T>
 void QFiniteStack<T>::allocate(int size)
 {
-    Q_ASSERT(_array == 0);
+    Q_ASSERT(_array == nullptr);
     Q_ASSERT(_alloc == 0);
     Q_ASSERT(_size == 0);
 
@@ -177,7 +177,7 @@ void QFiniteStack<T>::deallocate()
 
     free(_array);
 
-    _array = 0;
+    _array = nullptr;
     _alloc = 0;
     _size = 0;
 }
diff --git a/src/qml/qml/ftw/qhashedstring_p.h b/src/qml/qml/ftw/qhashedstring_p.h
index 956805d696..bd2c9fbdb7 100644
--- a/src/qml/qml/ftw/qhashedstring_p.h
+++ b/src/qml/qml/ftw/qhashedstring_p.h
@@ -179,7 +179,7 @@ class Q_AUTOTEST_EXPORT QStringHashNode
 {
 public:
     QStringHashNode()
-    : length(0), hash(0), symbolId(0), ckey(0)
+    : length(0), hash(0), symbolId(0), ckey(nullptr)
     {
     }
 
@@ -277,7 +277,7 @@ class Q_AUTOTEST_EXPORT QStringHashData
 {
 public:
     QStringHashData()
-    : buckets(0), numBuckets(0), size(0), numBits(0)
+    : buckets(nullptr), numBuckets(0), size(0), numBits(0)
 #ifdef QSTRINGHASH_LINK_DEBUG
       , linkCount(0)
 #endif
@@ -292,7 +292,7 @@ public:
 #endif
 
     struct IteratorData {
-        IteratorData() : n(0), p(0) {}
+        IteratorData() : n(nullptr), p(nullptr) {}
         QStringHashNode *n;
         void *p;
     };
@@ -362,14 +362,14 @@ public:
         T value;
     };
     struct NewedNode : public Node {
-        NewedNode(const QHashedString &key, const T &value) : Node(key, value), nextNewed(0) {}
-        NewedNode(const QHashedCStringRef &key, const T &value) : Node(key, value), nextNewed(0) {}
-        NewedNode(const Node &o) : Node(o), nextNewed(0) {}
+        NewedNode(const QHashedString &key, const T &value) : Node(key, value), nextNewed(nullptr) {}
+        NewedNode(const QHashedCStringRef &key, const T &value) : Node(key, value), nextNewed(nullptr) {}
+        NewedNode(const Node &o) : Node(o), nextNewed(nullptr) {}
         NewedNode *nextNewed;
     };
     struct ReservedNodePool
     {
-        ReservedNodePool() : count(0), used(0), nodes(0) {}
+        ReservedNodePool() : count(0), used(0), nodes(nullptr) {}
         ~ReservedNodePool() { delete [] nodes; }
         int count;
         int used;
@@ -475,13 +475,13 @@ public:
 
 template<class T>
 QStringHash<T>::QStringHash()
-: newedNodes(0), nodePool(0), link(0)
+: newedNodes(nullptr), nodePool(nullptr), link(nullptr)
 {
 }
 
 template<class T>
 QStringHash<T>::QStringHash(const QStringHash<T> &other)
-: newedNodes(0), nodePool(0), link(0)
+: newedNodes(nullptr), nodePool(nullptr), link(nullptr)
 {
     data.numBits = other.data.numBits;
     data.size = other.data.size;
@@ -579,14 +579,14 @@ void QStringHash<T>::clear()
     if (nodePool) delete nodePool;
     delete [] data.buckets;
 
-    data.buckets = 0;
+    data.buckets = nullptr;
     data.numBuckets = 0;
     data.numBits = 0;
     data.size = 0;
 
-    newedNodes = 0;
-    nodePool = 0;
-    link = 0;
+    newedNodes = nullptr;
+    nodePool = nullptr;
+    link = nullptr;
 }
 
 template<class T>
@@ -716,16 +716,16 @@ QStringHash<T>::iterateNext(const QStringHashData::IteratorData &d)
         node < (This->nodePool->nodes + This->nodePool->used)) {
         node--;
         if (node < This->nodePool->nodes)
-            node = 0;
+            node = nullptr;
     } else {
         NewedNode *nn = (NewedNode *)node;
         node = nn->nextNewed;
 
-        if (node == 0 && This->nodePool && This->nodePool->used)
+        if (node == nullptr && This->nodePool && This->nodePool->used)
             node = This->nodePool->nodes + This->nodePool->used - 1;
     }
 
-    if (node == 0 && This->link)
+    if (node == nullptr && This->link)
         return This->link->iterateFirst();
 
     QStringHashData::IteratorData rv;
@@ -737,13 +737,13 @@ QStringHash<T>::iterateNext(const QStringHashData::IteratorData &d)
 template<class T>
 QStringHashData::IteratorData QStringHash<T>::iterateFirst() const
 {
-    Node *n = 0;
+    Node *n = nullptr;
     if (newedNodes)
         n = newedNodes;
     else if (nodePool && nodePool->used)
         n = nodePool->nodes + nodePool->used - 1;
 
-    if (n == 0 && link)
+    if (n == nullptr && link)
         return link->iterateFirst();
 
     QStringHashData::IteratorData rv;
@@ -822,7 +822,7 @@ void QStringHash<T>::insert(const K &key, const T &value)
 {
     // If this is a linked hash, we can't rely on owning the node, so we always
     // create a new one.
-    Node *n = link?0:findNode(key);
+    Node *n = link?nullptr:findNode(key);
     if (n) n->value = value;
     else createNode(key, value);
 }
@@ -837,7 +837,7 @@ template<class T>
 template<class K>
 typename QStringHash<T>::Node *QStringHash<T>::findNode(const K &key) const
 {
-    QStringHashNode *node = data.numBuckets?data.buckets[hashOf(key) % data.numBuckets]:0;
+    QStringHashNode *node = data.numBuckets?data.buckets[hashOf(key) % data.numBuckets]:nullptr;
 
     typename HashedForm<K>::Type hashedKey(hashedString(key));
     while (node && !node->equals(hashedKey))
@@ -851,7 +851,7 @@ template<class K>
 T *QStringHash<T>::value(const K &key) const
 {
     Node *n = findNode(key);
-    return n?&n->value:0;
+    return n?&n->value:nullptr;
 }
 
 template<class T>
@@ -865,14 +865,14 @@ template<class T>
 T *QStringHash<T>::value(const QV4::String *string) const
 {
     Node *n = findNode(string);
-    return n?&n->value:0;
+    return n?&n->value:nullptr;
 }
 
 template<class T>
 template<class K>
 bool QStringHash<T>::contains(const K &key) const
 {
-    return 0 != value(key);
+    return nullptr != value(key);
 }
 
 template<class T>
@@ -1089,7 +1089,7 @@ quint32 QHashedString::existingHash() const
 }
 
 QHashedStringRef::QHashedStringRef()
-: m_data(0), m_length(0), m_hash(0)
+: m_data(nullptr), m_length(0), m_hash(0)
 {
 }
 
@@ -1236,7 +1236,7 @@ quint32 QHashedStringRef::hash() const
 }
 
 QHashedCStringRef::QHashedCStringRef()
-: m_data(0), m_length(0), m_hash(0)
+: m_data(nullptr), m_length(0), m_hash(0)
 {
 }
 
diff --git a/src/qml/qml/ftw/qintrusivelist_p.h b/src/qml/qml/ftw/qintrusivelist_p.h
index 3d749e697e..c3b16f5b8c 100644
--- a/src/qml/qml/ftw/qintrusivelist_p.h
+++ b/src/qml/qml/ftw/qintrusivelist_p.h
@@ -113,7 +113,7 @@ public:
 
 template<class N, QIntrusiveListNode N::*member>
 QIntrusiveList<N, member>::iterator::iterator()
-: _value(0)
+: _value(nullptr)
 {
 }
 
@@ -165,7 +165,7 @@ typename QIntrusiveList<N, member>::iterator &QIntrusiveList<N, member>::iterato
 
 template<class N, QIntrusiveListNode N::*member>
 QIntrusiveList<N, member>::QIntrusiveList()
-: __first(0)
+: __first(nullptr)
 {
 }
 
@@ -178,7 +178,7 @@ QIntrusiveList<N, member>::~QIntrusiveList()
 template<class N, QIntrusiveListNode N::*member>
 bool QIntrusiveList<N, member>::isEmpty() const
 {
-    return __first == 0;
+    return __first == nullptr;
 }
 
 template<class N, QIntrusiveListNode N::*member>
@@ -215,14 +215,14 @@ bool QIntrusiveList<N, member>::contains(N *n) const
 template<class N, QIntrusiveListNode N::*member>
 N *QIntrusiveList<N, member>::first() const
 {
-    return __first?nodeToN(__first):0;
+    return __first?nodeToN(__first):nullptr;
 }
 
 template<class N, QIntrusiveListNode N::*member>
 N *QIntrusiveList<N, member>::next(N *current)
 {
     QIntrusiveListNode *nextnode = (current->*member)._next;
-    N *nextstruct = nextnode?nodeToN(nextnode):0;
+    N *nextstruct = nextnode?nodeToN(nextnode):nullptr;
     return nextstruct;
 }
 
@@ -241,11 +241,11 @@ typename QIntrusiveList<N, member>::iterator QIntrusiveList<N, member>::end()
 template<class N, QIntrusiveListNode N::*member>
 N *QIntrusiveList<N, member>::nodeToN(QIntrusiveListNode *node)
 {
-    return (N *)((char *)node - ((char *)&(((N *)0)->*member) - (char *)0));
+    return (N *)((char *)node - ((char *)&(((N *)nullptr)->*member) - (char *)nullptr));
 }
 
 QIntrusiveListNode::QIntrusiveListNode()
-: _next(0), _prev(0)
+: _next(nullptr), _prev(nullptr)
 {
 }
 
@@ -258,13 +258,13 @@ void QIntrusiveListNode::remove()
 {
     if (_prev) *_prev = _next;
     if (_next) _next->_prev = _prev;
-    _prev = 0;
-    _next = 0;
+    _prev = nullptr;
+    _next = nullptr;
 }
 
 bool QIntrusiveListNode::isInList() const
 {
-    return _prev != 0;
+    return _prev != nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/qml/qml/ftw/qpodvector_p.h b/src/qml/qml/ftw/qpodvector_p.h
index cafe3367de..d0e4f89741 100644
--- a/src/qml/qml/ftw/qpodvector_p.h
+++ b/src/qml/qml/ftw/qpodvector_p.h
@@ -61,7 +61,7 @@ class QPODVector
 {
 public:
     QPODVector()
-    : m_count(0), m_capacity(0), m_data(0) {}
+    : m_count(0), m_capacity(0), m_data(nullptr) {}
     ~QPODVector() { if (m_data) ::free(m_data); }
 
     const T &at(int idx) const {
@@ -154,7 +154,7 @@ public:
         other.m_data = m_data;
         m_count = 0;
         m_capacity = 0;
-        m_data = 0;
+        m_data = nullptr;
     }
 
     QPODVector<T,Increment> &operator<<(const T &v) { append(v); return *this; }
diff --git a/src/qml/qml/ftw/qqmlrefcount_p.h b/src/qml/qml/ftw/qqmlrefcount_p.h
index 225e18156c..3cfb345b30 100644
--- a/src/qml/qml/ftw/qqmlrefcount_p.h
+++ b/src/qml/qml/ftw/qqmlrefcount_p.h
@@ -137,7 +137,7 @@ void QQmlRefCount::destroy()
 
 template<class T>
 QQmlRefPointer<T>::QQmlRefPointer()
-: o(0)
+: o(nullptr)
 {
 }
 
diff --git a/src/qml/qml/ftw/qqmlthread.cpp b/src/qml/qml/ftw/qqmlthread.cpp
index cae7088840..78b477b472 100644
--- a/src/qml/qml/ftw/qqmlthread.cpp
+++ b/src/qml/qml/ftw/qqmlthread.cpp
@@ -123,7 +123,7 @@ bool QQmlThreadPrivate::MainObject::event(QEvent *e)
 
 QQmlThreadPrivate::QQmlThreadPrivate(QQmlThread *q)
 : q(q), m_threadProcessing(false), m_mainProcessing(false), m_shutdown(false),
-  m_mainThreadWaiting(false), mainSync(0), m_mainObject(this)
+  m_mainThreadWaiting(false), mainSync(nullptr), m_mainObject(this)
 {
     setObjectName(QStringLiteral("QQmlThread"));
 }
@@ -155,7 +155,7 @@ void QQmlThreadPrivate::mainEvent()
     m_mainProcessing = true;
 
     while (!mainList.isEmpty() || mainSync) {
-        bool isSync = mainSync != 0;
+        bool isSync = mainSync != nullptr;
         QQmlThread::Message *message = isSync?mainSync:mainList.takeFirst();
         unlock();
 
@@ -165,7 +165,7 @@ void QQmlThreadPrivate::mainEvent()
         lock();
 
         if (isSync) {
-            mainSync = 0;
+            mainSync = nullptr;
             wakeOne();
         }
     }
@@ -328,7 +328,7 @@ void QQmlThread::internalCallMethodInThread(Message *message)
             message->call(this);
             delete message;
             lock();
-            d->mainSync = 0;
+            d->mainSync = nullptr;
             wakeOne();
         } else {
             d->wait();
@@ -345,7 +345,7 @@ void QQmlThread::internalCallMethodInMain(Message *message)
 
     d->lock();
 
-    Q_ASSERT(d->mainSync == 0);
+    Q_ASSERT(d->mainSync == nullptr);
     d->mainSync = message;
 
     if (d->m_mainThreadWaiting) {
@@ -359,7 +359,7 @@ void QQmlThread::internalCallMethodInMain(Message *message)
     while (d->mainSync) {
         if (d->m_shutdown) {
             delete d->mainSync;
-            d->mainSync = 0;
+            d->mainSync = nullptr;
             break;
         }
         d->wait();
@@ -405,7 +405,7 @@ void QQmlThread::waitForNextMessage()
             message->call(this);
             delete message;
             lock();
-            d->mainSync = 0;
+            d->mainSync = nullptr;
             wakeOne();
         } else {
             d->wait();
diff --git a/src/qml/qml/ftw/qqmlthread_p.h b/src/qml/qml/ftw/qqmlthread_p.h
index 295235e255..0ed12a2972 100644
--- a/src/qml/qml/ftw/qqmlthread_p.h
+++ b/src/qml/qml/ftw/qqmlthread_p.h
@@ -124,7 +124,7 @@ private:
     friend class QQmlThreadPrivate;
 
     struct Message {
-        Message() : next(0) {}
+        Message() : next(nullptr) {}
         virtual ~Message() {}
         Message *next;
         virtual void call(QQmlThread *) = 0;
diff --git a/src/qml/qml/ftw/qrecursionwatcher_p.h b/src/qml/qml/ftw/qrecursionwatcher_p.h
index 99228b9583..56b714f922 100644
--- a/src/qml/qml/ftw/qrecursionwatcher_p.h
+++ b/src/qml/qml/ftw/qrecursionwatcher_p.h
@@ -74,7 +74,7 @@ private:
 };
 
 QRecursionNode::QRecursionNode()
-: _r(0)
+: _r(nullptr)
 {
 }
 
@@ -89,7 +89,7 @@ QRecursionWatcher<T, Node>::QRecursionWatcher(T *t)
 template<class T, QRecursionNode T::*Node>
 QRecursionWatcher<T, Node>::~QRecursionWatcher()
 {
-    if ((_t->*Node)._r == &_r) (_t->*Node)._r = 0;
+    if ((_t->*Node)._r == &_r) (_t->*Node)._r = nullptr;
 }
 
 template<class T, QRecursionNode T::*Node>
diff --git a/src/qml/qml/ftw/qrecyclepool_p.h b/src/qml/qml/ftw/qrecyclepool_p.h
index 42a2f13729..39f4f88512 100644
--- a/src/qml/qml/ftw/qrecyclepool_p.h
+++ b/src/qml/qml/ftw/qrecyclepool_p.h
@@ -61,7 +61,7 @@ class QRecyclePoolPrivate
 public:
     QRecyclePoolPrivate()
     : recyclePoolHold(true), outstandingItems(0), cookie(QRECYCLEPOOLCOOKIE),
-      currentPage(0), nextAllocated(0)
+      currentPage(nullptr), nextAllocated(nullptr)
     {
     }
 
@@ -178,7 +178,7 @@ void QRecyclePoolPrivate<T, Step>::releaseIfPossible()
 template<typename T, int Step>
 T *QRecyclePoolPrivate<T, Step>::allocate()
 {
-    PoolType *rv = 0;
+    PoolType *rv = nullptr;
     if (nextAllocated) {
         rv = nextAllocated;
         nextAllocated = rv->nextAllocated;
diff --git a/src/qml/qml/qqml.h b/src/qml/qml/qqml.h
index 219df264be..213f23cd98 100644
--- a/src/qml/qml/qqml.h
+++ b/src/qml/qml/qqml.h
@@ -354,7 +354,7 @@ int qmlRegisterRevision(const char *uri, int versionMajor, int versionMinor)
         sizeof(T), QQmlPrivate::createInto<T>,
         QString(),
 
-        uri, versionMajor, versionMinor, 0, &T::staticMetaObject,
+        uri, versionMajor, versionMinor, nullptr, &T::staticMetaObject,
 
         QQmlPrivate::attachedPropertiesFunc<T>(),
         QQmlPrivate::attachedPropertiesMetaObject<T>(),
diff --git a/src/qml/qml/qqmlabstractbinding.cpp b/src/qml/qml/qqmlabstractbinding.cpp
index b1c320afd4..42891c1a8e 100644
--- a/src/qml/qml/qqmlabstractbinding.cpp
+++ b/src/qml/qml/qqmlabstractbinding.cpp
@@ -83,7 +83,7 @@ void QQmlAbstractBinding::addToObject()
         // Value type
 
         // Find the value type proxy (if there is one)
-        QQmlValueTypeProxyBinding *proxy = 0;
+        QQmlValueTypeProxyBinding *proxy = nullptr;
         if (data->hasBindingBit(coreIndex)) {
             QQmlAbstractBinding *b = data->bindings;
             while (b && (b->targetPropertyIndex().coreIndex() != coreIndex ||
@@ -137,7 +137,7 @@ void QQmlAbstractBinding::removeFromObject()
 
     QQmlAbstractBinding::Ptr next;
     next = nextBinding();
-    setNextBinding(0);
+    setNextBinding(nullptr);
 
     int coreIndex = targetPropertyIndex().coreIndex();
     if (targetPropertyIndex().hasValueTypeIndex()) {
diff --git a/src/qml/qml/qqmlapplicationengine.cpp b/src/qml/qml/qqmlapplicationengine.cpp
index faab8bf926..a0517e4558 100644
--- a/src/qml/qml/qqmlapplicationengine.cpp
+++ b/src/qml/qml/qqmlapplicationengine.cpp
@@ -128,7 +128,7 @@ void QQmlApplicationEnginePrivate::finishLoad(QQmlComponent *c)
     case QQmlComponent::Error:
         qWarning() << "QQmlApplicationEngine failed to load component";
         qWarning() << qPrintable(c->errorString());
-        q->objectCreated(0, c->url());
+        q->objectCreated(nullptr, c->url());
         break;
     case QQmlComponent::Ready: {
         auto newObj = c->create();
diff --git a/src/qml/qml/qqmlbinding.cpp b/src/qml/qml/qqmlbinding.cpp
index a968aa908d..ca3bff43a4 100644
--- a/src/qml/qml/qqmlbinding.cpp
+++ b/src/qml/qml/qqmlbinding.cpp
@@ -70,7 +70,7 @@ QQmlBinding *QQmlBinding::create(const QQmlPropertyData *property, const QQmlScr
         return b;
 
     QString url;
-    QV4::Function *runtimeFunction = 0;
+    QV4::Function *runtimeFunction = nullptr;
 
     QQmlContextData *ctxtdata = QQmlContextData::get(scriptPrivate->context);
     QQmlEnginePrivate *engine = QQmlEnginePrivate::get(scriptPrivate->context->engine());
@@ -150,7 +150,7 @@ void QQmlBinding::update(QQmlPropertyData::WriteFlags flags)
         QQmlPropertyData vtd;
         getPropertyData(&d, &vtd);
         Q_ASSERT(d);
-        QQmlProperty p = QQmlPropertyPrivate::restore(targetObject(), *d, &vtd, 0);
+        QQmlProperty p = QQmlPropertyPrivate::restore(targetObject(), *d, &vtd, nullptr);
         QQmlAbstractBinding::printBindingLoopError(p);
         return;
     }
@@ -364,7 +364,7 @@ Q_NEVER_INLINE bool QQmlBinding::slowWrite(const QQmlPropertyData &core,
     } else if (core.isQList()) {
         value = v4engine->toVariant(result, qMetaTypeId<QList<QObject *> >());
     } else if (result.isNull() && core.isQObject()) {
-        value = QVariant::fromValue((QObject *)0);
+        value = QVariant::fromValue((QObject *)nullptr);
     } else if (core.propType() == qMetaTypeId<QList<QUrl> >()) {
         value = QQmlPropertyPrivate::resolvedUrlSequence(v4engine->toVariant(result, qMetaTypeId<QList<QUrl> >()), context());
     } else if (!isVarProperty && type != qMetaTypeId<QJSValue>()) {
@@ -386,7 +386,7 @@ Q_NEVER_INLINE bool QQmlBinding::slowWrite(const QQmlPropertyData &core,
         Q_ASSERT(vmemo);
         vmemo->setVMEProperty(core.coreIndex(), result);
     } else if (isUndefined && core.isResettable()) {
-        void *args[] = { 0 };
+        void *args[] = { nullptr };
         QMetaObject::metacall(m_target.data(), QMetaObject::ResetProperty, core.coreIndex(), args);
     } else if (isUndefined && type == qMetaTypeId<QVariant>()) {
         QQmlPropertyPrivate::writeValueProperty(m_target.data(), core, valueTypeData, QVariant(), context(), flags);
@@ -417,8 +417,8 @@ Q_NEVER_INLINE bool QQmlBinding::slowWrite(const QQmlPropertyData &core,
         if (watcher.wasDeleted())
             return true;
 
-        const char *valueType = 0;
-        const char *propertyType = 0;
+        const char *valueType = nullptr;
+        const char *propertyType = nullptr;
 
         const int userType = value.userType();
         if (userType == QMetaType::QObjectStar) {
@@ -530,7 +530,7 @@ void QQmlBinding::setTarget(QObject *object, const QQmlPropertyData &core, const
 
         int aValueTypeIndex;
         if (!vme->aliasTarget(coreIndex, &object, &coreIndex, &aValueTypeIndex)) {
-            m_target = 0;
+            m_target = nullptr;
             m_targetIndex = QQmlPropertyIndex();
             return;
         }
@@ -539,7 +539,7 @@ void QQmlBinding::setTarget(QObject *object, const QQmlPropertyData &core, const
 
         QQmlData *data = QQmlData::get(object, false);
         if (!data || !data->propertyCache) {
-            m_target = 0;
+            m_target = nullptr;
             m_targetIndex = QQmlPropertyIndex();
             return;
         }
diff --git a/src/qml/qml/qqmlboundsignal.cpp b/src/qml/qml/qqmlboundsignal.cpp
index 501184b630..060706ac50 100644
--- a/src/qml/qml/qqmlboundsignal.cpp
+++ b/src/qml/qml/qqmlboundsignal.cpp
@@ -191,7 +191,7 @@ void QQmlBoundSignalExpression::evaluate(void **a)
     QQmlMetaObject::ArgTypeStorage storage;
     //TODO: lookup via signal index rather than method index as an optimization
     int methodIndex = QMetaObjectPrivate::signal(m_target->metaObject(), m_index).methodIndex();
-    int *argsTypes = QQmlMetaObject(m_target).methodParameterTypes(methodIndex, &storage, 0);
+    int *argsTypes = QQmlMetaObject(m_target).methodParameterTypes(methodIndex, &storage, nullptr);
     int argCount = argsTypes ? *argsTypes : 0;
 
     QV4::JSCallData jsCall(scope, argCount);
@@ -222,7 +222,7 @@ void QQmlBoundSignalExpression::evaluate(void **a)
         }
     }
 
-    QQmlJavaScriptExpression::evaluate(jsCall.callData(), 0);
+    QQmlJavaScriptExpression::evaluate(jsCall.callData(), nullptr);
 
     ep->dereferenceScarceResources(); // "release" scarce resources if top-level expression evaluation is complete.
 }
@@ -245,7 +245,7 @@ void QQmlBoundSignalExpression::evaluate(const QList<QVariant> &args)
         jsCall->args[ii] = scope.engine->fromVariant(args[ii]);
     }
 
-    QQmlJavaScriptExpression::evaluate(jsCall.callData(), 0);
+    QQmlJavaScriptExpression::evaluate(jsCall.callData(), nullptr);
 
     ep->dereferenceScarceResources(); // "release" scarce resources if top-level expression evaluation is complete.
 }
@@ -260,8 +260,8 @@ void QQmlBoundSignalExpression::evaluate(const QList<QVariant> &args)
 QQmlBoundSignal::QQmlBoundSignal(QObject *target, int signal, QObject *owner,
                                  QQmlEngine *engine)
     : QQmlNotifierEndpoint(QQmlNotifierEndpoint::QQmlBoundSignal),
-      m_prevSignal(0), m_nextSignal(0),
-      m_enabled(true), m_expression(0)
+      m_prevSignal(nullptr), m_nextSignal(nullptr),
+      m_enabled(true), m_expression(nullptr)
 {
     addToObject(owner);
 
@@ -298,8 +298,8 @@ void QQmlBoundSignal::removeFromObject()
     if (m_prevSignal) {
         *m_prevSignal = m_nextSignal;
         if (m_nextSignal) m_nextSignal->m_prevSignal = m_prevSignal;
-        m_prevSignal = 0;
-        m_nextSignal = 0;
+        m_prevSignal = nullptr;
+        m_nextSignal = nullptr;
     }
 }
 
diff --git a/src/qml/qml/qqmlboundsignal_p.h b/src/qml/qml/qqmlboundsignal_p.h
index 3a0b8aed59..d3e584fd13 100644
--- a/src/qml/qml/qqmlboundsignal_p.h
+++ b/src/qml/qml/qqmlboundsignal_p.h
@@ -89,14 +89,14 @@ public:
     QString expression() const;
     QObject *target() const { return m_target; }
 
-    QQmlEngine *engine() const { return context() ? context()->engine : 0; }
+    QQmlEngine *engine() const { return context() ? context()->engine : nullptr; }
 
 private:
     ~QQmlBoundSignalExpression();
 
     void init(QQmlContextData *ctxt, QObject *scope);
 
-    bool expressionFunctionValid() const { return function() != 0; }
+    bool expressionFunctionValid() const { return function() != nullptr; }
 
     int m_index;
     QObject *m_target;
diff --git a/src/qml/qml/qqmlboundsignalexpressionpointer_p.h b/src/qml/qml/qqmlboundsignalexpressionpointer_p.h
index de651315f8..685e0160a3 100644
--- a/src/qml/qml/qqmlboundsignalexpressionpointer_p.h
+++ b/src/qml/qml/qqmlboundsignalexpressionpointer_p.h
@@ -58,7 +58,7 @@ class QQmlBoundSignalExpression;
 class Q_QML_PRIVATE_EXPORT QQmlBoundSignalExpressionPointer
 {
 public:
-    inline QQmlBoundSignalExpressionPointer() : o(0) {}
+    inline QQmlBoundSignalExpressionPointer() : o(nullptr) {}
     QQmlBoundSignalExpressionPointer(QQmlBoundSignalExpression *);
     QQmlBoundSignalExpressionPointer(const QQmlBoundSignalExpressionPointer &);
     ~QQmlBoundSignalExpressionPointer();
diff --git a/src/qml/qml/qqmlcleanup.cpp b/src/qml/qml/qqmlcleanup.cpp
index 708537a303..0d57ef5fe8 100644
--- a/src/qml/qml/qqmlcleanup.cpp
+++ b/src/qml/qml/qqmlcleanup.cpp
@@ -58,7 +58,7 @@ called by QQmlEngine just before it destroys the context.
 Create a QQmlCleanup that is not associated with any engine.
 */
 QQmlCleanup::QQmlCleanup()
-: prev(0), next(0), engine(0)
+: prev(nullptr), next(nullptr), engine(nullptr)
 {
 }
 
@@ -66,7 +66,7 @@ QQmlCleanup::QQmlCleanup()
 Create a QQmlCleanup for \a engine
 */
 QQmlCleanup::QQmlCleanup(QQmlEngine *engine)
-: prev(0), next(0), engine(0)
+: prev(nullptr), next(nullptr), engine(nullptr)
 {
     if (!engine)
         return;
@@ -109,8 +109,8 @@ QQmlCleanup::~QQmlCleanup()
 
     if (prev) *prev = next;
     if (next) next->prev = prev;
-    prev = 0;
-    next = 0;
+    prev = nullptr;
+    next = nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/qml/qml/qqmlcleanup_p.h b/src/qml/qml/qqmlcleanup_p.h
index a1db656477..0e15c28b9d 100644
--- a/src/qml/qml/qqmlcleanup_p.h
+++ b/src/qml/qml/qqmlcleanup_p.h
@@ -64,7 +64,7 @@ public:
     QQmlCleanup(QQmlEngine *);
     virtual ~QQmlCleanup();
 
-    bool hasEngine() const { return prev != 0; }
+    bool hasEngine() const { return prev != nullptr; }
     void addToEngine(QQmlEngine *);
 protected:
     virtual void clear() = 0;
diff --git a/src/qml/qml/qqmlcomponent.cpp b/src/qml/qml/qqmlcomponent.cpp
index 481507946d..061f3b54a5 100644
--- a/src/qml/qml/qqmlcomponent.cpp
+++ b/src/qml/qml/qqmlcomponent.cpp
@@ -315,7 +315,7 @@ void QQmlComponentPrivate::typeDataReady(QQmlTypeData *)
     Q_ASSERT(typeData);
 
     fromTypeData(typeData);
-    typeData = 0;
+    typeData = nullptr;
     progress = 1.0;
 
     emit q->statusChanged(q->status());
@@ -349,7 +349,7 @@ void QQmlComponentPrivate::clear()
     if (typeData) {
         typeData->unregisterCallback(this);
         typeData->release();
-        typeData = 0;
+        typeData = nullptr;
     }
 
     compilationUnit = nullptr;
@@ -820,27 +820,27 @@ QQmlComponentPrivate::beginCreate(QQmlContextData *context)
     Q_Q(QQmlComponent);
     if (!context) {
         qWarning("QQmlComponent: Cannot create a component in a null context");
-        return 0;
+        return nullptr;
     }
 
     if (!context->isValid()) {
         qWarning("QQmlComponent: Cannot create a component in an invalid context");
-        return 0;
+        return nullptr;
     }
 
     if (context->engine != engine) {
         qWarning("QQmlComponent: Must create component in context from the same QQmlEngine");
-        return 0;
+        return nullptr;
     }
 
     if (state.completePending) {
         qWarning("QQmlComponent: Cannot create new component instance before completing the previous");
-        return 0;
+        return nullptr;
     }
 
     if (!q->isReady()) {
         qWarning("QQmlComponent: Component is not ready");
-        return 0;
+        return nullptr;
     }
 
     // Do not create infinite recursion in object creation
@@ -848,7 +848,7 @@ QQmlComponentPrivate::beginCreate(QQmlContextData *context)
     if (++creationDepth.localData() >= maxCreationDepth) {
         qWarning("QQmlComponent: Component creation is recursing - aborting");
         --creationDepth.localData();
-        return 0;
+        return nullptr;
     }
     Q_ASSERT(creationDepth.localData() >= 1);
     depthIncreased = true;
@@ -860,7 +860,7 @@ QQmlComponentPrivate::beginCreate(QQmlContextData *context)
     state.completePending = true;
 
     enginePriv->referenceScarceResources();
-    QObject *rv = 0;
+    QObject *rv = nullptr;
     state.creator.reset(new QQmlObjectCreator(context, compilationUnit, creationContext));
     rv = state.creator->create(start);
     if (!rv)
@@ -965,7 +965,7 @@ void QQmlComponentPrivate::completeCreate()
 }
 
 QQmlComponentAttached::QQmlComponentAttached(QObject *parent)
-: QObject(parent), prev(0), next(0)
+: QObject(parent), prev(nullptr), next(nullptr)
 {
 }
 
@@ -973,8 +973,8 @@ QQmlComponentAttached::~QQmlComponentAttached()
 {
     if (prev) *prev = next;
     if (next) next->prev = prev;
-    prev = 0;
-    next = 0;
+    prev = nullptr;
+    next = nullptr;
 }
 
 /*!
@@ -1269,7 +1269,7 @@ void QQmlComponent::createObject(QQmlV4Function *args)
     Q_ASSERT(d->engine);
     Q_ASSERT(args);
 
-    QObject *parent = 0;
+    QObject *parent = nullptr;
     QV4::ExecutionEngine *v4 = args->v4engine();
     QV4::Scope scope(v4);
     QV4::ScopedValue valuemap(scope, QV4::Primitive::undefinedValue());
@@ -1386,7 +1386,7 @@ void QQmlComponent::incubateObject(QQmlV4Function *args)
     QV4::ExecutionEngine *v4 = args->v4engine();
     QV4::Scope scope(v4);
 
-    QObject *parent = 0;
+    QObject *parent = nullptr;
     QV4::ScopedValue valuemap(scope, QV4::Primitive::undefinedValue());
     QQmlIncubator::IncubationMode mode = QQmlIncubator::Asynchronous;
 
@@ -1457,8 +1457,8 @@ QQmlComponentExtension::QQmlComponentExtension(QV4::ExecutionEngine *v4)
     QV4::ScopedObject proto(scope, v4->newObject());
     proto->defineAccessorProperty(QStringLiteral("onStatusChanged"),
                                   QV4::QmlIncubatorObject::method_get_statusChanged, QV4::QmlIncubatorObject::method_set_statusChanged);
-    proto->defineAccessorProperty(QStringLiteral("status"), QV4::QmlIncubatorObject::method_get_status, 0);
-    proto->defineAccessorProperty(QStringLiteral("object"), QV4::QmlIncubatorObject::method_get_object, 0);
+    proto->defineAccessorProperty(QStringLiteral("status"), QV4::QmlIncubatorObject::method_get_status, nullptr);
+    proto->defineAccessorProperty(QStringLiteral("object"), QV4::QmlIncubatorObject::method_get_object, nullptr);
     proto->defineDefaultProperty(QStringLiteral("forceCompletion"), QV4::QmlIncubatorObject::method_forceCompletion);
 
     incubationProto.set(v4, proto);
diff --git a/src/qml/qml/qqmlcomponent_p.h b/src/qml/qml/qqmlcomponent_p.h
index 8a58a1ada0..2a8d36f317 100644
--- a/src/qml/qml/qqmlcomponent_p.h
+++ b/src/qml/qml/qqmlcomponent_p.h
@@ -79,7 +79,7 @@ class Q_QML_PRIVATE_EXPORT QQmlComponentPrivate : public QObjectPrivate, public
 
 public:
     QQmlComponentPrivate()
-        : typeData(0), progress(0.), start(-1), engine(0), creationContext(0), depthIncreased(false) {}
+        : typeData(nullptr), progress(0.), start(-1), engine(nullptr), creationContext(nullptr), depthIncreased(false) {}
 
     void loadUrl(const QUrl &newUrl, QQmlComponent::CompilationMode mode = QQmlComponent::PreferSynchronous);
 
diff --git a/src/qml/qml/qqmlcomponentattached_p.h b/src/qml/qml/qqmlcomponentattached_p.h
index 8236aac1af..e3bca18857 100644
--- a/src/qml/qml/qqmlcomponentattached_p.h
+++ b/src/qml/qml/qqmlcomponentattached_p.h
@@ -62,7 +62,7 @@ class Q_QML_PRIVATE_EXPORT QQmlComponentAttached : public QObject
 {
     Q_OBJECT
 public:
-    QQmlComponentAttached(QObject *parent = 0);
+    QQmlComponentAttached(QObject *parent = nullptr);
     ~QQmlComponentAttached();
 
     void add(QQmlComponentAttached **a) {
@@ -72,7 +72,7 @@ public:
     void rem() {
         if (next) next->prev = prev;
         *prev = next;
-        next = 0; prev = 0;
+        next = nullptr; prev = nullptr;
     }
     QQmlComponentAttached **prev;
     QQmlComponentAttached *next;
diff --git a/src/qml/qml/qqmlcontext.cpp b/src/qml/qml/qqmlcontext.cpp
index 82b8d06dc4..6e43bc735f 100644
--- a/src/qml/qml/qqmlcontext.cpp
+++ b/src/qml/qml/qqmlcontext.cpp
@@ -56,7 +56,7 @@
 QT_BEGIN_NAMESPACE
 
 QQmlContextPrivate::QQmlContextPrivate()
-: data(0), notifyIndex(-1)
+: data(nullptr), notifyIndex(-1)
 {
 }
 
@@ -177,7 +177,7 @@ QQmlContext::QQmlContext(QQmlEngine *engine, QObject *parent)
     d->data = new QQmlContextData(this);
     ++d->data->refCount;
 
-    d->data->setParent(engine?QQmlContextData::get(engine->rootContext()):0);
+    d->data->setParent(engine?QQmlContextData::get(engine->rootContext()):nullptr);
 }
 
 /*!
@@ -191,14 +191,14 @@ QQmlContext::QQmlContext(QQmlContext *parentContext, QObject *parent)
     d->data = new QQmlContextData(this);
     ++d->data->refCount;
 
-    d->data->setParent(parentContext?QQmlContextData::get(parentContext):0);
+    d->data->setParent(parentContext?QQmlContextData::get(parentContext):nullptr);
 }
 
 /*!
     \internal
 */
 QQmlContext::QQmlContext(QQmlContextData *data)
-: QObject(*(new QQmlContextPrivate), 0)
+: QObject(*(new QQmlContextPrivate), nullptr)
 {
     Q_D(QQmlContext);
     d->data = data;
@@ -216,7 +216,7 @@ QQmlContext::~QQmlContext()
 {
     Q_D(QQmlContext);
 
-    d->data->publicContext = 0;
+    d->data->publicContext = nullptr;
     if (!--d->data->refCount)
         d->data->destroy();
 }
@@ -250,7 +250,7 @@ QQmlEngine *QQmlContext::engine() const
 QQmlContext *QQmlContext::parentContext() const
 {
     Q_D(const QQmlContext);
-    return d->data->parent?d->data->parent->asQQmlContext():0;
+    return d->data->parent?d->data->parent->asQQmlContext():nullptr;
 }
 
 /*!
@@ -315,7 +315,7 @@ void QQmlContext::setContextProperty(const QString &name, const QVariant &value)
         data->refreshExpressions();
     } else {
         d->propertyValues[idx] = value;
-        QMetaObject::activate(this, d->notifyIndex, idx, 0);
+        QMetaObject::activate(this, d->notifyIndex, idx, nullptr);
     }
 }
 
@@ -349,8 +349,8 @@ void QQmlContext::setContextProperties(const QVector<PropertyPair> &properties)
     QQmlJavaScriptExpression *expressions = data->expressions;
     QQmlContextData *childContexts = data->childContexts;
 
-    data->expressions = 0;
-    data->childContexts = 0;
+    data->expressions = nullptr;
+    data->childContexts = nullptr;
 
     for (auto property : properties)
         setContextProperty(property.name, property.value);
@@ -521,7 +521,7 @@ QObject *QQmlContextPrivate::context_at(QQmlListProperty<QObject> *prop, int ind
     int contextProperty = (int)(quintptr)prop->data;
 
     if (d->propertyValues.at(contextProperty).userType() != qMetaTypeId<QList<QObject*> >()) {
-        return 0;
+        return nullptr;
     } else {
         return ((const QList<QObject*> *)d->propertyValues.at(contextProperty).constData())->at(index);
     }
@@ -534,12 +534,12 @@ QQmlContextData::QQmlContextData()
 }
 
 QQmlContextData::QQmlContextData(QQmlContext *ctxt)
-    : engine(0), isInternal(false), isJSContext(false),
+    : engine(nullptr), isInternal(false), isJSContext(false),
       isPragmaLibraryContext(false), unresolvedNames(false), hasEmittedDestruction(false), isRootObjectInCreation(false),
-      publicContext(ctxt), incubator(0), componentObjectIndex(-1),
-      contextObject(0), nextChild(0), prevChild(0),
-      expressions(0), contextObjects(0), idValues(0), idValueCount(0),
-      componentAttached(0)
+      publicContext(ctxt), incubator(nullptr), componentObjectIndex(-1),
+      contextObject(nullptr), nextChild(nullptr), prevChild(nullptr),
+      expressions(nullptr), contextObjects(nullptr), idValues(nullptr), idValueCount(0),
+      componentAttached(nullptr)
 {
 }
 
@@ -556,8 +556,8 @@ void QQmlContextData::emitDestruction()
                 componentAttached = a->next;
                 if (componentAttached) componentAttached->prev = &componentAttached;
 
-                a->next = 0;
-                a->prev = 0;
+                a->next = nullptr;
+                a->prev = nullptr;
 
                 emit a->destruction();
             }
@@ -583,14 +583,14 @@ void QQmlContextData::invalidate()
     if (prevChild) {
         *prevChild = nextChild;
         if (nextChild) nextChild->prevChild = prevChild;
-        nextChild = 0;
-        prevChild = 0;
+        nextChild = nullptr;
+        prevChild = nullptr;
     }
 
     importedScripts.clear();
 
-    engine = 0;
-    parent = 0;
+    engine = nullptr;
+    parent = nullptr;
 }
 
 void QQmlContextData::clearContext()
@@ -601,20 +601,20 @@ void QQmlContextData::clearContext()
     while (expression) {
         QQmlJavaScriptExpression *nextExpression = expression->m_nextExpression;
 
-        expression->m_prevExpression = 0;
-        expression->m_nextExpression = 0;
+        expression->m_prevExpression = nullptr;
+        expression->m_nextExpression = nullptr;
 
-        expression->setContext(0);
+        expression->setContext(nullptr);
 
         expression = nextExpression;
     }
-    expressions = 0;
+    expressions = nullptr;
 }
 
 void QQmlContextData::destroy()
 {
     Q_ASSERT(refCount == 0);
-    linkedContext = 0;
+    linkedContext = nullptr;
 
     // avoid recursion
     ++refCount;
@@ -629,26 +629,26 @@ void QQmlContextData::destroy()
         QQmlData *co = contextObjects;
         contextObjects = contextObjects->nextContextObject;
 
-        co->context = 0;
-        co->outerContext = 0;
-        co->nextContextObject = 0;
-        co->prevContextObject = 0;
+        co->context = nullptr;
+        co->outerContext = nullptr;
+        co->nextContextObject = nullptr;
+        co->prevContextObject = nullptr;
     }
     Q_ASSERT(refCount == 1);
 
     QQmlGuardedContextData *contextGuard = contextGuards;
     while (contextGuard) {
         QQmlGuardedContextData *next = contextGuard->m_next;
-        contextGuard->m_next = 0;
-        contextGuard->m_prev = 0;
-        contextGuard->m_contextData = 0;
+        contextGuard->m_next = nullptr;
+        contextGuard->m_prev = nullptr;
+        contextGuard->m_contextData = nullptr;
         contextGuard = next;
     }
-    contextGuards = 0;
+    contextGuards = nullptr;
     Q_ASSERT(refCount == 1);
 
     delete [] idValues;
-    idValues = 0;
+    idValues = nullptr;
 
     Q_ASSERT(refCount == 1);
     if (publicContext) {
@@ -746,7 +746,7 @@ void QQmlContextData::refreshExpressionsRecursive(bool isGlobal)
 // *structure* (not values) changes.
 void QQmlContextData::refreshExpressions()
 {
-    bool isGlobal = (parent == 0);
+    bool isGlobal = (parent == nullptr);
 
     // For efficiency, we try and minimize the number of guards we have to create
     if (expressions_to_run(this, isGlobal) && childContexts) {
@@ -772,7 +772,7 @@ void QQmlContextData::addObject(QObject *o)
 {
     QQmlData *data = QQmlData::get(o, true);
 
-    Q_ASSERT(data->context == 0);
+    Q_ASSERT(data->context == nullptr);
 
     data->context = this;
     data->outerContext = this;
diff --git a/src/qml/qml/qqmlcontext_p.h b/src/qml/qml/qqmlcontext_p.h
index 8939c810fe..ff36d6c9a8 100644
--- a/src/qml/qml/qqmlcontext_p.h
+++ b/src/qml/qml/qqmlcontext_p.h
@@ -178,7 +178,7 @@ public:
     QQmlRefPointer<QQmlTypeNameCache> imports;
 
     // My children
-    QQmlContextData *childContexts = 0;
+    QQmlContextData *childContexts = nullptr;
 
     // My peers in parent's childContexts list
     QQmlContextData  *nextChild;
@@ -191,7 +191,7 @@ public:
     QQmlData *contextObjects;
 
     // Doubly-linked list of context guards (XXX merge with contextObjects)
-    QQmlGuardedContextData *contextGuards = 0;
+    QQmlGuardedContextData *contextGuards = nullptr;
 
     // id guards
     struct ContextGuard : public QQmlGuard<QObject>
@@ -261,9 +261,9 @@ private:
 
     inline void clear();
 
-    QQmlContextData *m_contextData = 0;
-    QQmlGuardedContextData  *m_next = 0;
-    QQmlGuardedContextData **m_prev = 0;
+    QQmlContextData *m_contextData = nullptr;
+    QQmlGuardedContextData  *m_next = nullptr;
+    QQmlGuardedContextData **m_prev = nullptr;
 };
 
 
@@ -287,14 +287,14 @@ void QQmlGuardedContextData::clear()
     if (m_prev) {
         *m_prev = m_next;
         if (m_next) m_next->m_prev = m_prev;
-        m_contextData = 0;
-        m_next = 0;
-        m_prev = 0;
+        m_contextData = nullptr;
+        m_next = nullptr;
+        m_prev = nullptr;
     }
 }
 
 QQmlContextDataRef::QQmlContextDataRef()
-    : m_contextData(0)
+    : m_contextData(nullptr)
 {
 }
 
@@ -338,7 +338,7 @@ void QQmlContextDataRef::clear()
 {
     if (m_contextData && !--m_contextData->refCount)
         m_contextData->destroy();
-    m_contextData = 0;
+    m_contextData = nullptr;
 }
 
 QQmlContextDataRef &
@@ -356,7 +356,7 @@ QQmlContextDataRef::operator=(const QQmlContextDataRef &other)
 }
 
 QQmlContextData::ContextGuard::ContextGuard()
-: context(0)
+: context(nullptr)
 {
 }
 
diff --git a/src/qml/qml/qqmlcustomparser.cpp b/src/qml/qml/qqmlcustomparser.cpp
index cc6e75a39c..5cf87f5264 100644
--- a/src/qml/qml/qqmlcustomparser.cpp
+++ b/src/qml/qml/qqmlcustomparser.cpp
@@ -138,7 +138,7 @@ int QQmlCustomParser::evaluateEnum(const QByteArray& script, bool *ok) const
         QQmlType type;
 
         if (imports.isT1()) {
-            imports.asT1()->resolveType(scope, &type, 0, 0, 0);
+            imports.asT1()->resolveType(scope, &type, nullptr, nullptr, nullptr);
         } else {
             QQmlTypeNameCache::Result result = imports.asT2()->query(scope);
             if (result.isValid())
@@ -178,7 +178,7 @@ const QMetaObject *QQmlCustomParser::resolveType(const QString& name) const
     if (!imports.isT1())
         return nullptr;
     QQmlType qmltype;
-    if (!imports.asT1()->resolveType(name, &qmltype, 0, 0, 0))
+    if (!imports.asT1()->resolveType(name, &qmltype, nullptr, nullptr, nullptr))
         return nullptr;
     return qmltype.metaObject();
 }
diff --git a/src/qml/qml/qqmlcustomparser_p.h b/src/qml/qml/qqmlcustomparser_p.h
index 5eb409990d..2a0f805014 100644
--- a/src/qml/qml/qqmlcustomparser_p.h
+++ b/src/qml/qml/qqmlcustomparser_p.h
@@ -74,8 +74,8 @@ public:
     };
     Q_DECLARE_FLAGS(Flags, Flag)
 
-    QQmlCustomParser() : engine(0), validator(0), m_flags(NoFlag) {}
-    QQmlCustomParser(Flags f) : engine(0), validator(0), m_flags(f) {}
+    QQmlCustomParser() : engine(nullptr), validator(nullptr), m_flags(NoFlag) {}
+    QQmlCustomParser(Flags f) : engine(nullptr), validator(nullptr), m_flags(f) {}
     virtual ~QQmlCustomParser() {}
 
     void clearErrors();
diff --git a/src/qml/qml/qqmldata_p.h b/src/qml/qml/qqmldata_p.h
index 17d145f939..20b96d2c4b 100644
--- a/src/qml/qml/qqmldata_p.h
+++ b/src/qml/qml/qqmldata_p.h
@@ -195,9 +195,9 @@ public:
     void disconnectNotifiers();
 
     // The context that created the C++ object
-    QQmlContextData *context = 0;
+    QQmlContextData *context = nullptr;
     // The outermost context in which this object lives
-    QQmlContextData *outerContext = 0;
+    QQmlContextData *outerContext = nullptr;
     QQmlContextDataRef ownContext;
 
     QQmlAbstractBinding *bindings;
@@ -247,13 +247,13 @@ public:
         // to be avoided because QObjectPrivate::currentChildBeingDeleted is in use.
         if (priv->isDeletingChildren || priv->wasDeleted) {
             Q_ASSERT(!create);
-            return 0;
+            return nullptr;
         } else if (priv->declarativeData) {
             return static_cast<QQmlData *>(priv->declarativeData);
         } else if (create) {
             return createQQmlData(priv);
         } else {
-            return 0;
+            return nullptr;
         }
     }
 
@@ -264,7 +264,7 @@ public:
         return false;
     }
 
-    bool hasExtendedData() const { return extendedData != 0; }
+    bool hasExtendedData() const { return extendedData != nullptr; }
     QHash<int, QObject *> *attachedProperties() const;
 
     static inline bool wasDeleted(const QObject *);
@@ -325,7 +325,7 @@ QQmlNotifierEndpoint *QQmlData::notify(int index)
     Q_ASSERT(index <= 0xFFFF);
 
     if (!notifyList || !(notifyList->connectionMask & (1ULL << quint64(index % 64)))) {
-        return 0;
+        return nullptr;
     } else if (index < notifyList->notifiesSize) {
         return notifyList->notifies[index];
     } else if (index <= notifyList->maximumTodoIndex) {
@@ -335,7 +335,7 @@ QQmlNotifierEndpoint *QQmlData::notify(int index)
     if (index < notifyList->notifiesSize) {
         return notifyList->notifies[index];
     } else {
-        return 0;
+        return nullptr;
     }
 }
 
diff --git a/src/qml/qml/qqmldelayedcallqueue.cpp b/src/qml/qml/qqmldelayedcallqueue.cpp
index 268f91c8ba..5bcf5cd586 100644
--- a/src/qml/qml/qqmldelayedcallqueue.cpp
+++ b/src/qml/qml/qqmldelayedcallqueue.cpp
@@ -89,7 +89,7 @@ void QQmlDelayedCallQueue::DelayedFunctionCall::execute(QV4::ExecutionEngine *en
 //
 
 QQmlDelayedCallQueue::QQmlDelayedCallQueue()
-    : QObject(0), m_engine(0), m_callbackOutstanding(false)
+    : QObject(nullptr), m_engine(nullptr), m_callbackOutstanding(false)
 {
 }
 
diff --git a/src/qml/qml/qqmlengine.cpp b/src/qml/qml/qqmlengine.cpp
index 02e206284b..4054d2f0be 100644
--- a/src/qml/qml/qqmlengine.cpp
+++ b/src/qml/qml/qqmlengine.cpp
@@ -669,19 +669,19 @@ the same object as is returned from the Qt.include() call.
 // Qt.include() is implemented in qv4include.cpp
 
 QQmlEnginePrivate::QQmlEnginePrivate(QQmlEngine *e)
-: propertyCapture(0), rootContext(0),
+: propertyCapture(nullptr), rootContext(nullptr),
 #if QT_CONFIG(qml_debug)
-  profiler(0),
+  profiler(nullptr),
 #endif
   outputWarningsToMsgLog(true),
-  cleanup(0), erroredBindings(0), inProgressCreations(0),
-  workerScriptEngine(0),
-  activeObjectCreator(0),
+  cleanup(nullptr), erroredBindings(nullptr), inProgressCreations(0),
+  workerScriptEngine(nullptr),
+  activeObjectCreator(nullptr),
 #if QT_CONFIG(qml_network)
-  networkAccessManager(0), networkAccessManagerFactory(0),
+  networkAccessManager(nullptr), networkAccessManagerFactory(nullptr),
 #endif
-  urlInterceptor(0), scarceResourcesRefCount(0), importDatabase(e), typeLoader(e),
-  uniqueId(1), incubatorCount(0), incubationController(0)
+  urlInterceptor(nullptr), scarceResourcesRefCount(0), importDatabase(e), typeLoader(e),
+  uniqueId(1), incubatorCount(0), incubationController(nullptr)
 {
 }
 
@@ -694,15 +694,15 @@ QQmlEnginePrivate::~QQmlEnginePrivate()
         QQmlCleanup *c = cleanup;
         cleanup = c->next;
         if (cleanup) cleanup->prev = &cleanup;
-        c->next = 0;
-        c->prev = 0;
+        c->next = nullptr;
+        c->prev = nullptr;
         c->clear();
     }
 
     doDeleteInEngineThread();
 
-    if (incubationController) incubationController->d = 0;
-    incubationController = 0;
+    if (incubationController) incubationController->d = nullptr;
+    incubationController = nullptr;
 
     QQmlMetaType::freeUnusedTypesAndCaches();
 
@@ -731,8 +731,8 @@ void QQmlPrivate::qdeclarativeelement_destructor(QObject *o)
             d->ownContext->invalidate();
             if (d->ownContext->contextObject == o)
                 d->ownContext->contextObject = nullptr;
-            d->ownContext = 0;
-            d->context = 0;
+            d->ownContext = nullptr;
+            d->context = nullptr;
         }
 
         // Mark this object as in the process of deletion to
@@ -750,10 +750,10 @@ QQmlData::QQmlData()
     : ownedByQml1(false), ownMemory(true), indestructible(true), explicitIndestructibleSet(false),
       hasTaintedV4Object(false), isQueuedForDeletion(false), rootObjectInCreation(false),
       hasInterceptorMetaObject(false), hasVMEMetaObject(false), parentFrozen(false),
-      bindingBitsArraySize(InlineBindingArraySize), notifyList(0),
-      bindings(0), signalHandlers(0), nextContextObject(0), prevContextObject(0),
+      bindingBitsArraySize(InlineBindingArraySize), notifyList(nullptr),
+      bindings(nullptr), signalHandlers(nullptr), nextContextObject(nullptr), prevContextObject(nullptr),
       lineNumber(0), columnNumber(0), jsEngineId(0),
-      propertyCache(0), guards(0), extendedData(0)
+      propertyCache(nullptr), guards(nullptr), extendedData(nullptr)
 {
     memset(bindingBitsValue, 0, sizeof(bindingBitsValue));
     init();
@@ -826,7 +826,7 @@ void QQmlData::signalEmitted(QAbstractDeclarativeData *, QObject *object, int in
         void **args = (void **) malloc((parameterTypes.count() + 1) *sizeof(void *));
 
         types[0] = 0; // return type
-        args[0] = 0; // return value
+        args[0] = nullptr; // return value
 
         for (int ii = 0; ii < parameterTypes.count(); ++ii) {
             const QByteArray &typeName = parameterTypes.at(ii);
@@ -847,7 +847,7 @@ void QQmlData::signalEmitted(QAbstractDeclarativeData *, QObject *object, int in
             args[ii + 1] = QMetaType::create(types[ii + 1], a[ii + 1]);
         }
 
-        QMetaCallEvent *ev = new QMetaCallEvent(m.methodIndex(), 0, 0, object, index,
+        QMetaCallEvent *ev = new QMetaCallEvent(m.methodIndex(), 0, nullptr, object, index,
                                                 parameterTypes.count() + 1, types, args);
 
         QQmlThreadNotifierProxyObject *mpo = new QQmlThreadNotifierProxyObject;
@@ -910,8 +910,8 @@ void QQmlData::setQueuedForDeletion(QObject *object)
                 ddata->context->emitDestruction();
                 if (ddata->ownContext->contextObject == object)
                     ddata->ownContext->contextObject = nullptr;
-                ddata->ownContext = 0;
-                ddata->context = 0;
+                ddata->ownContext = nullptr;
+                ddata->context = nullptr;
             }
             ddata->isQueuedForDeletion = true;
         }
@@ -1062,7 +1062,7 @@ QQmlEngine::~QQmlEngine()
         currType.singletonInstanceInfo()->destroy(this);
 
     delete d->rootContext;
-    d->rootContext = 0;
+    d->rootContext = nullptr;
 }
 
 /*! \fn void QQmlEngine::quit()
@@ -1175,7 +1175,7 @@ void QQmlEnginePrivate::registerFinalizeCallback(QObject *obj, int index)
     if (activeObjectCreator) {
         activeObjectCreator->finalizeCallbacks()->append(qMakePair(QPointer<QObject>(obj), index));
     } else {
-        void *args[] = { 0 };
+        void *args[] = { nullptr };
         QMetaObject::metacall(obj, QMetaObject::InvokeMetaMethod, index, args);
     }
 }
@@ -1392,13 +1392,13 @@ void QQmlEngine::retranslate()
 QQmlContext *QQmlEngine::contextForObject(const QObject *object)
 {
     if(!object)
-        return 0;
+        return nullptr;
 
     QQmlData *data = QQmlData::get(object);
     if (data && data->outerContext)
         return data->outerContext->asQQmlContext();
 
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -1546,7 +1546,7 @@ QQmlEngine *qmlEngine(const QObject *obj)
 {
     QQmlData *data = QQmlData::get(obj, false);
     if (!data || !data->context)
-        return 0;
+        return nullptr;
     return data->context->engine;
 }
 
@@ -1554,7 +1554,7 @@ QObject *qmlAttachedPropertiesObjectById(int id, const QObject *object, bool cre
 {
     QQmlData *data = QQmlData::get(object, create);
     if (!data)
-        return 0; // Attached properties are only on objects created by QML, unless explicitly requested (create==true)
+        return nullptr; // Attached properties are only on objects created by QML, unless explicitly requested (create==true)
 
     QObject *rv = data->hasExtendedData()?data->attachedProperties()->value(id):0;
     if (rv || !create)
@@ -1563,7 +1563,7 @@ QObject *qmlAttachedPropertiesObjectById(int id, const QObject *object, bool cre
     QQmlEnginePrivate *engine = QQmlEnginePrivate::get(data->context);
     QQmlAttachedPropertiesFunc pf = QQmlMetaType::attachedPropertiesFuncById(engine, id);
     if (!pf)
-        return 0;
+        return nullptr;
 
     rv = pf(const_cast<QObject *>(object));
 
@@ -1577,12 +1577,12 @@ QObject *qmlAttachedPropertiesObject(int *idCache, const QObject *object,
                                      const QMetaObject *attachedMetaObject, bool create)
 {
     if (*idCache == -1) {
-        QQmlEngine *engine = object ? qmlEngine(object) : 0;
-        *idCache = QQmlMetaType::attachedPropertiesFuncId(engine ? QQmlEnginePrivate::get(engine) : 0, attachedMetaObject);
+        QQmlEngine *engine = object ? qmlEngine(object) : nullptr;
+        *idCache = QQmlMetaType::attachedPropertiesFuncId(engine ? QQmlEnginePrivate::get(engine) : nullptr, attachedMetaObject);
     }
 
     if (*idCache == -1 || !object)
-        return 0;
+        return nullptr;
 
     return qmlAttachedPropertiesObjectById(*idCache, object, create);
 }
@@ -1642,7 +1642,7 @@ void QQmlData::NotifyList::layout(QQmlNotifierEndpoint *endpoint)
 {
     // Add a temporary sentinel at beginning of list. This will be overwritten
     // when the end point is inserted into the notifies further down.
-    endpoint->prev = 0;
+    endpoint->prev = nullptr;
 
     while (endpoint->next) {
         Q_ASSERT(reinterpret_cast<QQmlNotifierEndpoint *>(endpoint->next->prev) == endpoint);
@@ -1688,7 +1688,7 @@ void QQmlData::NotifyList::layout()
     }
 
     maximumTodoIndex = 0;
-    todo = 0;
+    todo = nullptr;
 }
 
 void QQmlData::deferData(int objectIndex, QV4::CompiledData::CompilationUnit *compilationUnit, QQmlContextData *context)
@@ -1732,8 +1732,8 @@ void QQmlData::addNotify(int index, QQmlNotifierEndpoint *endpoint)
         notifyList->connectionMask = 0;
         notifyList->maximumTodoIndex = 0;
         notifyList->notifiesSize = 0;
-        notifyList->todo = 0;
-        notifyList->notifies = 0;
+        notifyList->todo = nullptr;
+        notifyList->notifies = nullptr;
     }
 
     Q_ASSERT(!endpoint->isConnected());
@@ -1769,7 +1769,7 @@ void QQmlData::disconnectNotifiers()
         }
         free(notifyList->notifies);
         free(notifyList);
-        notifyList = 0;
+        notifyList = nullptr;
     }
 }
 
@@ -1831,8 +1831,8 @@ void QQmlData::destroyed(QObject *object)
         }
 
         QQmlBoundSignal *next = signalHandler->m_nextSignal;
-        signalHandler->m_prevSignal = 0;
-        signalHandler->m_nextSignal = 0;
+        signalHandler->m_prevSignal = nullptr;
+        signalHandler->m_nextSignal = nullptr;
         delete signalHandler;
         signalHandler = next;
     }
@@ -1843,11 +1843,11 @@ void QQmlData::destroyed(QObject *object)
     if (propertyCache)
         propertyCache->release();
 
-    ownContext = 0;
+    ownContext = nullptr;
 
     while (guards) {
         QQmlGuard<QObject> *guard = static_cast<QQmlGuard<QObject> *>(guards);
-        *guard = (QObject *)0;
+        *guard = (QObject *)nullptr;
         guard->objectDestroyed(object);
     }
 
@@ -1985,23 +1985,23 @@ static void dumpwarning(const QQmlError &error)
     switch (error.messageType()) {
     case QtDebugMsg:
         QMessageLogger(error.url().toString().toLatin1().constData(),
-                       error.line(), 0).debug().nospace()
+                       error.line(), nullptr).debug().nospace()
                 << qPrintable(error.toString());
         break;
     case QtInfoMsg:
         QMessageLogger(error.url().toString().toLatin1().constData(),
-                       error.line(), 0).info().nospace()
+                       error.line(), nullptr).info().nospace()
                 << qPrintable(error.toString());
         break;
     case QtWarningMsg:
     case QtFatalMsg: // fatal does not support streaming, and furthermore, is actually fatal. Probably not desirable for QML.
         QMessageLogger(error.url().toString().toLatin1().constData(),
-                       error.line(), 0).warning().nospace()
+                       error.line(), nullptr).warning().nospace()
                 << qPrintable(error.toString());
         break;
     case QtCriticalMsg:
         QMessageLogger(error.url().toString().toLatin1().constData(),
-                       error.line(), 0).critical().nospace()
+                       error.line(), nullptr).critical().nospace()
                 << qPrintable(error.toString());
         break;
     }
@@ -2338,7 +2338,7 @@ QQmlPropertyCache *QQmlEnginePrivate::propertyCacheForType(int t)
     } else {
         QQmlType type = QQmlMetaType::qmlType(t);
         locker.unlock();
-        return type.isValid() ? cache(type.metaObject()) : 0;
+        return type.isValid() ? cache(type.metaObject()) : nullptr;
     }
 }
 
@@ -2353,9 +2353,9 @@ QQmlPropertyCache *QQmlEnginePrivate::rawPropertyCacheForType(int t, int minorVe
         locker.unlock();
 
         if (minorVersion >= 0)
-            return type.isValid() ? cache(type, minorVersion) : 0;
+            return type.isValid() ? cache(type, minorVersion) : nullptr;
         else
-            return type.isValid() ? cache(type.baseMetaObject()) : 0;
+            return type.isValid() ? cache(type.baseMetaObject()) : nullptr;
     }
 }
 
diff --git a/src/qml/qml/qqmlengine_p.h b/src/qml/qml/qqmlengine_p.h
index f12409ed9a..2dfbd42e57 100644
--- a/src/qml/qml/qqmlengine_p.h
+++ b/src/qml/qml/qqmlengine_p.h
@@ -213,7 +213,7 @@ public:
 
     // These methods may be called from the loader thread
     bool isQObject(int);
-    QObject *toQObject(const QVariant &, bool *ok = 0) const;
+    QObject *toQObject(const QVariant &, bool *ok = nullptr) const;
     QQmlMetaType::TypeCategory typeCategory(int) const;
     bool isList(int) const;
     int listType(int) const;
@@ -265,7 +265,7 @@ private:
     static bool s_designerMode;
 
     // These members is protected by the full QQmlEnginePrivate::mutex mutex
-    struct Deletable { Deletable():next(0) {} virtual ~Deletable() {} Deletable *next; };
+    struct Deletable { Deletable():next(nullptr) {} virtual ~Deletable() {} Deletable *next; };
     QFieldList<Deletable, &Deletable::next> toDeleteInEngineThread;
     void doDeleteInEngineThread();
 
@@ -411,12 +411,12 @@ const QQmlEnginePrivate *QQmlEnginePrivate::get(const QQmlEngine *e)
 
 QQmlEnginePrivate *QQmlEnginePrivate::get(QQmlContext *c)
 {
-    return (c && c->engine()) ? QQmlEnginePrivate::get(c->engine()) : 0;
+    return (c && c->engine()) ? QQmlEnginePrivate::get(c->engine()) : nullptr;
 }
 
 QQmlEnginePrivate *QQmlEnginePrivate::get(QQmlContextData *c)
 {
-    return (c && c->engine) ? QQmlEnginePrivate::get(c->engine) : 0;
+    return (c && c->engine) ? QQmlEnginePrivate::get(c->engine) : nullptr;
 }
 
 QQmlEngine *QQmlEnginePrivate::get(QQmlEnginePrivate *p)
@@ -430,7 +430,7 @@ QQmlEnginePrivate *QQmlEnginePrivate::get(QV4::ExecutionEngine *e)
 {
     QQmlEngine *qmlEngine = e->qmlEngine();
     if (!qmlEngine)
-        return 0;
+        return nullptr;
     return get(qmlEngine);
 }
 
diff --git a/src/qml/qml/qqmlerror.cpp b/src/qml/qml/qqmlerror.cpp
index 1b264b025c..fc5b186b29 100644
--- a/src/qml/qml/qqmlerror.cpp
+++ b/src/qml/qml/qqmlerror.cpp
@@ -99,7 +99,7 @@ QQmlErrorPrivate::QQmlErrorPrivate()
     Creates an empty error object.
 */
 QQmlError::QQmlError()
-: d(0)
+: d(nullptr)
 {
 }
 
@@ -107,7 +107,7 @@ QQmlError::QQmlError()
     Creates a copy of \a other.
 */
 QQmlError::QQmlError(const QQmlError &other)
-: d(0)
+: d(nullptr)
 {
     *this = other;
 }
@@ -119,7 +119,7 @@ QQmlError &QQmlError::operator=(const QQmlError &other)
 {
     if (!other.d) {
         delete d;
-        d = 0;
+        d = nullptr;
     } else {
         if (!d)
             d = new QQmlErrorPrivate;
@@ -138,7 +138,7 @@ QQmlError &QQmlError::operator=(const QQmlError &other)
 */
 QQmlError::~QQmlError()
 {
-    delete d; d = 0;
+    delete d; d = nullptr;
 }
 
 /*!
@@ -146,7 +146,7 @@ QQmlError::~QQmlError()
 */
 bool QQmlError::isValid() const
 {
-    return d != 0;
+    return d != nullptr;
 }
 
 /*!
@@ -239,7 +239,7 @@ QObject *QQmlError::object() const
 {
     if (d)
         return d->object;
-    return 0;
+    return nullptr;
 }
 
 /*!
diff --git a/src/qml/qml/qqmlexpression.cpp b/src/qml/qml/qqmlexpression.cpp
index 3ba0afc7bd..59cc9bb09f 100644
--- a/src/qml/qml/qqmlexpression.cpp
+++ b/src/qml/qml/qqmlexpression.cpp
@@ -121,7 +121,7 @@ void QQmlExpressionPrivate::init(QQmlContextData *ctxt, QV4::Function *runtimeFu
     null expression object and its value will always be an invalid QVariant.
  */
 QQmlExpression::QQmlExpression()
-: QObject(*new QQmlExpressionPrivate, 0)
+: QObject(*new QQmlExpressionPrivate, nullptr)
 {
 }
 
@@ -147,7 +147,7 @@ QQmlExpression::QQmlExpression(const QQmlScriptString &script, QQmlContext *ctxt
 
     QQmlContextData *evalCtxtData = QQmlContextData::get(ctxt ? ctxt : scriptPrivate->context);
     QObject *scopeObject = scope ? scope : scriptPrivate->scope;
-    QV4::Function *runtimeFunction = 0;
+    QV4::Function *runtimeFunction = nullptr;
 
     if (scriptPrivate->context) {
         QQmlContextData *ctxtdata = QQmlContextData::get(scriptPrivate->context);
@@ -191,7 +191,7 @@ QQmlExpression::QQmlExpression(QQmlContext *ctxt,
 */
 QQmlExpression::QQmlExpression(QQmlContextData *ctxt, QObject *scope,
                                                const QString &expression)
-: QObject(*new QQmlExpressionPrivate, 0)
+: QObject(*new QQmlExpressionPrivate, nullptr)
 {
     Q_D(QQmlExpression);
     d->init(ctxt, expression, scope);
@@ -211,7 +211,7 @@ QQmlExpression::~QQmlExpression()
 QQmlEngine *QQmlExpression::engine() const
 {
     Q_D(const QQmlExpression);
-    return d->context()?d->context()->engine:0;
+    return d->context()?d->context()->engine:nullptr;
 }
 
 /*!
@@ -222,7 +222,7 @@ QQmlContext *QQmlExpression::context() const
 {
     Q_D(const QQmlExpression);
     QQmlContextData *data = d->context();
-    return data?data->asQQmlContext():0;
+    return data?data->asQQmlContext():nullptr;
 }
 
 /*!
diff --git a/src/qml/qml/qqmlexpression_p.h b/src/qml/qml/qqmlexpression_p.h
index a94ca0fc2d..55059575e1 100644
--- a/src/qml/qml/qqmlexpression_p.h
+++ b/src/qml/qml/qqmlexpression_p.h
@@ -73,9 +73,9 @@ public:
     void init(QQmlContextData *, const QString &, QObject *);
     void init(QQmlContextData *, QV4::Function *runtimeFunction, QObject *);
 
-    QVariant value(bool *isUndefined = 0);
+    QVariant value(bool *isUndefined = nullptr);
 
-    QV4::ReturnedValue v4value(bool *isUndefined = 0);
+    QV4::ReturnedValue v4value(bool *isUndefined = nullptr);
 
     static inline QQmlExpressionPrivate *get(QQmlExpression *expr);
     static inline QQmlExpression *get(QQmlExpressionPrivate *expr);
diff --git a/src/qml/qml/qqmlfile.cpp b/src/qml/qml/qqmlfile.cpp
index 93c3e8e00c..99031e1e74 100644
--- a/src/qml/qml/qqmlfile.cpp
+++ b/src/qml/qml/qqmlfile.cpp
@@ -131,7 +131,7 @@ int QQmlFileNetworkReply::replyFinishedIndex = -1;
 int QQmlFileNetworkReply::replyDownloadProgressIndex = -1;
 
 QQmlFileNetworkReply::QQmlFileNetworkReply(QQmlEngine *e, QQmlFilePrivate *p, const QUrl &url)
-: m_engine(e), m_p(p), m_redirectCount(0), m_reply(0)
+: m_engine(e), m_p(p), m_redirectCount(0), m_reply(nullptr)
 {
     if (finishedIndex == -1) {
         finishedIndex = QMetaMethod::fromSignal(&QQmlFileNetworkReply::finished).methodIndex();
@@ -194,9 +194,9 @@ void QQmlFileNetworkReply::networkFinished()
     }
 
     m_reply->deleteLater();
-    m_reply = 0;
+    m_reply = nullptr;
 
-    m_p->reply = 0;
+    m_p->reply = nullptr;
     emit finished();
     delete this;
 }
@@ -210,7 +210,7 @@ void QQmlFileNetworkReply::networkDownloadProgress(qint64 a, qint64 b)
 QQmlFilePrivate::QQmlFilePrivate()
 : error(None)
 #if QT_CONFIG(qml_network)
-, reply(0)
+, reply(nullptr)
 #endif
 {
 }
@@ -237,7 +237,7 @@ QQmlFile::~QQmlFile()
     delete d->reply;
 #endif
     delete d;
-    d = 0;
+    d = nullptr;
 }
 
 bool QQmlFile::isNull() const
diff --git a/src/qml/qml/qqmlfileselector.cpp b/src/qml/qml/qqmlfileselector.cpp
index be6216d3ff..8666144096 100644
--- a/src/qml/qml/qqmlfileselector.cpp
+++ b/src/qml/qml/qqmlfileselector.cpp
@@ -115,8 +115,8 @@ QQmlFileSelector::~QQmlFileSelector()
 {
     Q_D(QQmlFileSelector);
     if (d->engine && QQmlFileSelector::get(d->engine) == this) {
-        d->engine->setUrlInterceptor(0);
-        d->engine = 0;
+        d->engine->setUrlInterceptor(nullptr);
+        d->engine = nullptr;
     }
     interceptorInstances()->remove(d->myInstance.data());
 }
@@ -200,7 +200,7 @@ QQmlFileSelector* QQmlFileSelector::get(QQmlEngine* engine)
     QQmlAbstractUrlInterceptor* current = engine->urlInterceptor();
     if (current && interceptorInstances()->contains(current))
         return interceptorInstances()->value(current);
-    return 0;
+    return nullptr;
 }
 
 /*!
diff --git a/src/qml/qml/qqmlglobal.cpp b/src/qml/qml/qqmlglobal.cpp
index 6418812bae..1d60c518c4 100644
--- a/src/qml/qml/qqmlglobal.cpp
+++ b/src/qml/qml/qqmlglobal.cpp
@@ -48,7 +48,7 @@
 QT_BEGIN_NAMESPACE
 
 QQmlValueTypeProvider::QQmlValueTypeProvider()
-    : next(0)
+    : next(nullptr)
 {
 }
 
@@ -65,7 +65,7 @@ const QMetaObject *QQmlValueTypeProvider::metaObjectForMetaType(int type)
             return mo;
     } while ((p = p->next));
 
-    return 0;
+    return nullptr;
 }
 
 bool QQmlValueTypeProvider::initValueType(int type, QVariant& dst)
@@ -218,7 +218,7 @@ bool QQmlValueTypeProvider::writeValueType(int type, const void *src, QVariant&
     return false;
 }
 
-const QMetaObject *QQmlValueTypeProvider::getMetaObjectForMetaType(int) { return 0; }
+const QMetaObject *QQmlValueTypeProvider::getMetaObjectForMetaType(int) { return nullptr; }
 bool QQmlValueTypeProvider::init(int, QVariant&) { return false; }
 bool QQmlValueTypeProvider::create(int, int, const void *[], QVariant *) { return false; }
 bool QQmlValueTypeProvider::createFromString(int, const QString &, void *, size_t) { return false; }
@@ -232,11 +232,11 @@ bool QQmlValueTypeProvider::read(const QVariant&, void *, int) { return false; }
 bool QQmlValueTypeProvider::write(int, const void *, QVariant&) { return false; }
 
 Q_GLOBAL_STATIC(QQmlValueTypeProvider, nullValueTypeProvider)
-static QQmlValueTypeProvider *valueTypeProvider = 0;
+static QQmlValueTypeProvider *valueTypeProvider = nullptr;
 
 static QQmlValueTypeProvider **getValueTypeProvider(void)
 {
-    if (valueTypeProvider == 0) {
+    if (valueTypeProvider == nullptr) {
         valueTypeProvider = nullValueTypeProvider;
     }
 
@@ -294,7 +294,7 @@ QVariant QQmlColorProvider::lighter(const QVariant &, qreal) { return QVariant()
 QVariant QQmlColorProvider::darker(const QVariant &, qreal) { return QVariant(); }
 QVariant QQmlColorProvider::tint(const QVariant &, const QVariant &) { return QVariant(); }
 
-static QQmlColorProvider *colorProvider = 0;
+static QQmlColorProvider *colorProvider = nullptr;
 
 Q_QML_PRIVATE_EXPORT QQmlColorProvider *QQml_setColorProvider(QQmlColorProvider *newProvider)
 {
@@ -305,7 +305,7 @@ Q_QML_PRIVATE_EXPORT QQmlColorProvider *QQml_setColorProvider(QQmlColorProvider
 
 static QQmlColorProvider **getColorProvider(void)
 {
-    if (colorProvider == 0) {
+    if (colorProvider == nullptr) {
         qWarning() << "Warning: QQml_colorProvider: no color provider has been set!";
         static QQmlColorProvider nullColorProvider;
         colorProvider = &nullColorProvider;
@@ -345,7 +345,7 @@ QObject *QQmlGuiProvider::styleHints()
 
 QString QQmlGuiProvider::pluginName() const { return QString(); }
 
-static QQmlGuiProvider *guiProvider = 0;
+static QQmlGuiProvider *guiProvider = nullptr;
 
 Q_QML_PRIVATE_EXPORT QQmlGuiProvider *QQml_setGuiProvider(QQmlGuiProvider *newProvider)
 {
@@ -356,7 +356,7 @@ Q_QML_PRIVATE_EXPORT QQmlGuiProvider *QQml_setGuiProvider(QQmlGuiProvider *newPr
 
 static QQmlGuiProvider **getGuiProvider(void)
 {
-    if (guiProvider == 0) {
+    if (guiProvider == nullptr) {
         static QQmlGuiProvider nullGuiProvider; //Still provides an application with no GUI support
         guiProvider = &nullGuiProvider;
     }
diff --git a/src/qml/qml/qqmlglobal_p.h b/src/qml/qml/qqmlglobal_p.h
index 5c46da0ea4..53f5dbed02 100644
--- a/src/qml/qml/qqmlglobal_p.h
+++ b/src/qml/qml/qqmlglobal_p.h
@@ -323,7 +323,7 @@ class Q_QML_PRIVATE_EXPORT QQmlApplication : public QObject
     Q_PROPERTY(QString organization READ organization WRITE setOrganization NOTIFY organizationChanged)
     Q_PROPERTY(QString domain READ domain WRITE setDomain NOTIFY domainChanged)
 public:
-    QQmlApplication(QObject* parent=0);
+    QQmlApplication(QObject* parent=nullptr);
 
     QStringList args();
 
@@ -347,7 +347,7 @@ Q_SIGNALS:
     void domainChanged();
 
 protected:
-    QQmlApplication(QQmlApplicationPrivate &dd, QObject* parent=0);
+    QQmlApplication(QQmlApplicationPrivate &dd, QObject* parent=nullptr);
 
 private:
     Q_DISABLE_COPY(QQmlApplication)
diff --git a/src/qml/qml/qqmlguard_p.h b/src/qml/qml/qqmlguard_p.h
index 52526276be..87c3677d29 100644
--- a/src/qml/qml/qqmlguard_p.h
+++ b/src/qml/qml/qqmlguard_p.h
@@ -113,18 +113,18 @@ Q_DECLARE_METATYPE(QQmlGuard<QObject>)
 QT_BEGIN_NAMESPACE
 
 QQmlGuardImpl::QQmlGuardImpl()
-: o(0), next(0), prev(0)
+: o(nullptr), next(nullptr), prev(nullptr)
 {
 }
 
 QQmlGuardImpl::QQmlGuardImpl(QObject *g)
-: o(g), next(0), prev(0)
+: o(g), next(nullptr), prev(nullptr)
 {
     if (o) addGuard();
 }
 
 QQmlGuardImpl::QQmlGuardImpl(const QQmlGuardImpl &g)
-: o(g.o), next(0), prev(0)
+: o(g.o), next(nullptr), prev(nullptr)
 {
     if (o) addGuard();
 }
@@ -132,7 +132,7 @@ QQmlGuardImpl::QQmlGuardImpl(const QQmlGuardImpl &g)
 QQmlGuardImpl::~QQmlGuardImpl()
 {
     if (prev) remGuard();
-    o = 0;
+    o = nullptr;
 }
 
 void QQmlGuardImpl::addGuard()
@@ -155,8 +155,8 @@ void QQmlGuardImpl::remGuard()
 
     if (next) next->prev = prev;
     *prev = next;
-    next = 0;
-    prev = 0;
+    next = nullptr;
+    prev = nullptr;
 }
 
 template<class T>
diff --git a/src/qml/qml/qqmlimport.cpp b/src/qml/qml/qqmlimport.cpp
index a9113603b8..8e6cbcbd7e 100644
--- a/src/qml/qml/qqmlimport.cpp
+++ b/src/qml/qml/qqmlimport.cpp
@@ -728,7 +728,7 @@ bool QQmlImports::resolveType(QQmlImportNamespace *ns, const QHashedStringRef &t
                               QQmlType *type_return, int *vmaj, int *vmin,
                               QQmlType::RegistrationType registrationType) const
 {
-    return ns->resolveType(d->typeLoader, type, vmaj, vmin, type_return, 0, 0, registrationType);
+    return ns->resolveType(d->typeLoader, type, vmaj, vmin, type_return, nullptr, nullptr, registrationType);
 }
 
 bool QQmlImportInstance::resolveType(QQmlTypeLoader *typeLoader, const QHashedStringRef& type,
@@ -803,7 +803,7 @@ bool QQmlImportInstance::resolveType(QQmlTypeLoader *typeLoader, const QHashedSt
             int major = vmajor ? *vmajor : -1;
             int minor = vminor ? *vminor : -1;
             QQmlType returnType = fetchOrCreateTypeForUrl(componentUrl, type, isCompositeSingleton,
-                                                          0, major, minor);
+                                                          nullptr, major, minor);
             if (type_return)
                 *type_return = returnType;
             return returnType.isValid();
@@ -831,7 +831,7 @@ bool QQmlImportInstance::resolveType(QQmlTypeLoader *typeLoader, const QHashedSt
                     *typeRecursionDetected = true;
             } else {
                 QQmlType returnType = fetchOrCreateTypeForUrl(
-                            qmlUrl, type, registrationType == QQmlType::CompositeSingletonType, 0);
+                            qmlUrl, type, registrationType == QQmlType::CompositeSingletonType, nullptr);
                 if (type_return)
                     *type_return = returnType;
                 return returnType.isValid();
@@ -847,7 +847,7 @@ bool QQmlImportsPrivate::resolveType(const QHashedStringRef& type, int *vmajor,
                                      QQmlType::RegistrationType registrationType,
                                      QQmlImport::RecursionRestriction recursionRestriction)
 {
-    QQmlImportNamespace *s = 0;
+    QQmlImportNamespace *s = nullptr;
     int dot = type.indexOf(Dot);
     if (dot >= 0) {
         QHashedStringRef namespaceName(type.constData(), dot);
@@ -978,7 +978,7 @@ QQmlImportNamespace *QQmlImportsPrivate::findQualifiedNamespace(const QHashedStr
         if (prefix == ns->prefix)
             return ns;
     }
-    return 0;
+    return nullptr;
 }
 
 /*
@@ -1257,7 +1257,7 @@ bool QQmlImportsPrivate::locateQmldir(const QString &uri, int vmaj, int vmin, QQ
 
     // Check cache first
 
-    QQmlImportDatabase::QmldirCache *cacheHead = 0;
+    QQmlImportDatabase::QmldirCache *cacheHead = nullptr;
     {
     QQmlImportDatabase::QmldirCache **cachePtr = database->qmldirCache.value(uri);
     if (cachePtr) {
@@ -1389,7 +1389,7 @@ bool QQmlImportsPrivate::validateQmldirVersion(const QQmlTypeLoaderQmldirContent
 
 QQmlImportNamespace *QQmlImportsPrivate::importNamespace(const QString &prefix) const
 {
-    QQmlImportNamespace *nameSpace = 0;
+    QQmlImportNamespace *nameSpace = nullptr;
 
     if (prefix.isEmpty()) {
         nameSpace = &unqualifiedset;
@@ -1446,7 +1446,7 @@ bool QQmlImportsPrivate::addLibraryImport(const QString& uri, const QString &pre
     Q_ASSERT(inserted);
 
     if (!incomplete) {
-        const QQmlTypeLoaderQmldirContent *qmldir = 0;
+        const QQmlTypeLoaderQmldirContent *qmldir = nullptr;
 
         if (!qmldirIdentifier.isEmpty()) {
             if (!getQmldirContent(qmldirIdentifier, uri, &qmldir, errors))
@@ -1565,7 +1565,7 @@ bool QQmlImportsPrivate::addFileImport(const QString& uri, const QString &prefix
     Q_ASSERT(inserted);
 
     if (!incomplete && !qmldirIdentifier.isEmpty()) {
-        const QQmlTypeLoaderQmldirContent *qmldir = 0;
+        const QQmlTypeLoaderQmldirContent *qmldir = nullptr;
         if (!getQmldirContent(qmldirIdentifier, importUri, &qmldir, errors))
             return false;
 
@@ -1589,7 +1589,7 @@ bool QQmlImportsPrivate::updateQmldirContent(const QString &uri, const QString &
     Q_ASSERT(nameSpace);
 
     if (QQmlImportInstance *import = nameSpace->findImport(uri)) {
-        const QQmlTypeLoaderQmldirContent *qmldir = 0;
+        const QQmlTypeLoaderQmldirContent *qmldir = nullptr;
         if (!getQmldirContent(qmldirIdentifier, uri, &qmldir, errors))
             return false;
 
@@ -2095,7 +2095,7 @@ bool QQmlImportDatabase::importStaticPlugin(QObject *instance, const QString &ba
         } else {
             RegisteredPlugin plugin;
             plugin.uri = uri;
-            plugin.loader = 0;
+            plugin.loader = nullptr;
             plugins->insert(uniquePluginID, plugin);
 
             if (!registerPluginTypes(instance, basePath, uri, typeNamespace, vmaj, errors))
@@ -2156,7 +2156,7 @@ bool QQmlImportDatabase::importDynamicPlugin(const QString &filePath, const QStr
                 return false;
             }
 
-            QPluginLoader* loader = 0;
+            QPluginLoader* loader = nullptr;
             if (!typesRegistered) {
                 loader = new QPluginLoader(absoluteFilePath);
 
diff --git a/src/qml/qml/qqmlimport_p.h b/src/qml/qml/qqmlimport_p.h
index 6298dd9c22..b70bb5253c 100644
--- a/src/qml/qml/qqmlimport_p.h
+++ b/src/qml/qml/qqmlimport_p.h
@@ -92,7 +92,7 @@ struct QQmlImportInstance
 
     bool resolveType(QQmlTypeLoader *typeLoader, const QHashedStringRef &type,
                      int *vmajor, int *vminor, QQmlType* type_return,
-                     QString *base = 0, bool *typeRecursionDetected = 0,
+                     QString *base = nullptr, bool *typeRecursionDetected = nullptr,
                      QQmlType::RegistrationType = QQmlType::AnyRegistrationType,
                      QQmlImport::RecursionRestriction recursionRestriction = QQmlImport::PreventRecursion) const;
 };
@@ -100,7 +100,7 @@ struct QQmlImportInstance
 class QQmlImportNamespace
 {
 public:
-    QQmlImportNamespace() : nextNamespace(0) {}
+    QQmlImportNamespace() : nextNamespace(nullptr) {}
     ~QQmlImportNamespace() { qDeleteAll(imports); }
 
     QList<QQmlImportInstance *> imports;
@@ -109,7 +109,7 @@ public:
 
     bool resolveType(QQmlTypeLoader *typeLoader, const QHashedStringRef& type,
                      int *vmajor, int *vminor, QQmlType* type_return,
-                     QString *base = 0, QList<QQmlError> *errors = 0,
+                     QString *base = nullptr, QList<QQmlError> *errors = nullptr,
                      QQmlType::RegistrationType registrationType = QQmlType::AnyRegistrationType,
                      QQmlImport::RecursionRestriction recursionRestriction = QQmlImport::PreventRecursion);
 
@@ -137,7 +137,7 @@ public:
                      QQmlType *type_return,
                      int *version_major, int *version_minor,
                      QQmlImportNamespace **ns_return,
-                     QList<QQmlError> *errors = 0,
+                     QList<QQmlError> *errors = nullptr,
                      QQmlType::RegistrationType registrationType = QQmlType::AnyRegistrationType,
                      QQmlImport::RecursionRestriction recursionRestriction
                      = QQmlImport::PreventRecursion) const;
diff --git a/src/qml/qml/qqmlincubator.cpp b/src/qml/qml/qqmlincubator.cpp
index 9855c27375..4546a4423f 100644
--- a/src/qml/qml/qqmlincubator.cpp
+++ b/src/qml/qml/qqmlincubator.cpp
@@ -110,7 +110,7 @@ void QQmlEngine::setIncubationController(QQmlIncubationController *controller)
 {
     Q_D(QQmlEngine);
     if (d->incubationController)
-        d->incubationController->d = 0;
+        d->incubationController->d = nullptr;
     d->incubationController = controller;
     if (controller) controller->d = d;
 }
@@ -128,7 +128,7 @@ QQmlIncubationController *QQmlEngine::incubationController() const
 
 QQmlIncubatorPrivate::QQmlIncubatorPrivate(QQmlIncubator *q, QQmlIncubator::IncubationMode m)
     : q(q), status(QQmlIncubator::Null), mode(m), isAsynchronous(false), progress(Execute),
-      result(0), enginePriv(0), waitingOnMe(0)
+      result(nullptr), enginePriv(nullptr), waitingOnMe(nullptr)
 {
 }
 
@@ -147,16 +147,16 @@ void QQmlIncubatorPrivate::clear()
         if (controller)
              controller->incubatingObjectCountChanged(enginePriv->incubatorCount);
     }
-    enginePriv = 0;
+    enginePriv = nullptr;
     if (!rootContext.isNull()) {
-        rootContext->incubator = 0;
-        rootContext = 0;
+        rootContext->incubator = nullptr;
+        rootContext = nullptr;
     }
 
     if (nextWaitingFor.isInList()) {
         Q_ASSERT(waitingOnMe);
         nextWaitingFor.remove();
-        waitingOnMe = 0;
+        waitingOnMe = nullptr;
     }
 
     // if we're waiting on any incubators then they should be cleared too.
@@ -171,7 +171,7 @@ void QQmlIncubatorPrivate::clear()
     vmeGuard.clear();
     if (creator && guardOk)
         creator->clear();
-    creator.reset(0);
+    creator.reset(nullptr);
 }
 
 /*!
@@ -218,15 +218,15 @@ than a static amount like 5 milliseconds - while not disturbing the application.
 Create a new incubation controller.
 */
 QQmlIncubationController::QQmlIncubationController()
-: d(0)
+: d(nullptr)
 {
 }
 
 /*! \internal */
 QQmlIncubationController::~QQmlIncubationController()
 {
-    if (d) QQmlEnginePrivate::get(d)->setIncubationController(0);
-    d = 0;
+    if (d) QQmlEnginePrivate::get(d)->setIncubationController(nullptr);
+    d = nullptr;
 }
 
 /*!
@@ -294,8 +294,8 @@ void QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt &i)
 
     if (progress == QQmlIncubatorPrivate::Execute) {
         enginePriv->referenceScarceResources();
-        QObject *tresult = 0;
-        tresult = creator->create(subComponentToCreate, /*parent*/0, &i);
+        QObject *tresult = nullptr;
+        tresult = creator->create(subComponentToCreate, /*parent*/nullptr, &i);
         if (!tresult)
             errors = creator->errors;
         enginePriv->dereferenceScarceResources();
@@ -304,7 +304,7 @@ void QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt &i)
             return;
 
         result = tresult;
-        if (errors.isEmpty() && result == 0)
+        if (errors.isEmpty() && result == nullptr)
             goto finishIncubate;
 
         if (result) {
@@ -340,7 +340,7 @@ void QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt &i)
             if (watcher.hasRecursed())
                 return;
 
-            QQmlContextData *ctxt = 0;
+            QQmlContextData *ctxt = nullptr;
             ctxt = creator->finalize(i);
             if (ctxt) {
                 rootContext = ctxt;
@@ -506,12 +506,12 @@ QQmlIncubator::QQmlIncubator(IncubationMode mode)
 /*! \internal */
 QQmlIncubator::~QQmlIncubator()
 {
-    d->q = 0;
+    d->q = nullptr;
 
     if (!d->ref.deref()) {
         delete d;
     }
-    d = 0;
+    d = nullptr;
 }
 
 /*!
@@ -557,18 +557,18 @@ void QQmlIncubator::clear()
     if (s == Loading) {
         Q_ASSERT(d->compilationUnit);
         if (d->result) d->result->deleteLater();
-        d->result = 0;
+        d->result = nullptr;
     }
 
     d->clear();
 
     Q_ASSERT(d->compilationUnit.isNull());
-    Q_ASSERT(d->waitingOnMe.data() == 0);
+    Q_ASSERT(d->waitingOnMe.data() == nullptr);
     Q_ASSERT(d->waitingFor.isEmpty());
 
     d->errors.clear();
     d->progress = QQmlIncubatorPrivate::Execute;
-    d->result = 0;
+    d->result = nullptr;
 
     if (s == Loading) {
         Q_ASSERT(enginePriv);
@@ -657,7 +657,7 @@ Return the incubated object if the status is Ready, otherwise 0.
 QObject *QQmlIncubator::object() const
 {
     if (status() != Ready)
-        return 0;
+        return nullptr;
     else
         return d->result;
 }
diff --git a/src/qml/qml/qqmlinfo.cpp b/src/qml/qml/qqmlinfo.cpp
index dae15e2eca..c8f5ba506f 100644
--- a/src/qml/qml/qqmlinfo.cpp
+++ b/src/qml/qml/qqmlinfo.cpp
@@ -182,7 +182,7 @@ QQmlInfo::~QQmlInfo()
     if (0 == --d->ref) {
         QList<QQmlError> errors = d->errors;
 
-        QQmlEngine *engine = 0;
+        QQmlEngine *engine = nullptr;
 
         if (!d->buffer.isEmpty()) {
             QQmlError error;
diff --git a/src/qml/qml/qqmljavascriptexpression.cpp b/src/qml/qml/qqmljavascriptexpression.cpp
index cd35ab93c6..74148e3ca4 100644
--- a/src/qml/qml/qqmljavascriptexpression.cpp
+++ b/src/qml/qml/qqmljavascriptexpression.cpp
@@ -93,12 +93,12 @@ void QQmlDelayedError::catchJavaScriptException(QV4::ExecutionEngine *engine)
 
 
 QQmlJavaScriptExpression::QQmlJavaScriptExpression()
-    : m_error(0),
-      m_context(0),
-      m_prevExpression(0),
-      m_nextExpression(0),
-      m_v4Function(0),
-      m_sourceLocation(0)
+    : m_error(nullptr),
+      m_context(nullptr),
+      m_prevExpression(nullptr),
+      m_nextExpression(nullptr),
+      m_v4Function(nullptr),
+      m_sourceLocation(nullptr)
 {
 }
 
@@ -114,7 +114,7 @@ QQmlJavaScriptExpression::~QQmlJavaScriptExpression()
     clearPermanentGuards();
     clearError();
     if (m_scopeObject.isT2()) // notify DeleteWatcher of our deletion.
-        m_scopeObject.asT2()->_s = 0;
+        m_scopeObject.asT2()->_s = nullptr;
 
     delete m_sourceLocation;
 }
@@ -157,8 +157,8 @@ void QQmlJavaScriptExpression::setContext(QQmlContextData *context)
         *m_prevExpression = m_nextExpression;
         if (m_nextExpression)
             m_nextExpression->m_prevExpression = m_prevExpression;
-        m_prevExpression = 0;
-        m_nextExpression = 0;
+        m_prevExpression = nullptr;
+        m_nextExpression = nullptr;
     }
 
     m_context = context;
@@ -211,7 +211,7 @@ QV4::ReturnedValue QQmlJavaScriptExpression::evaluate(QV4::CallData *callData, b
     QQmlPropertyCapture capture(m_context->engine, this, &watcher);
 
     QQmlPropertyCapture *lastPropertyCapture = ep->propertyCapture;
-    ep->propertyCapture = notifyOnValueChanged() ? &capture : 0;
+    ep->propertyCapture = notifyOnValueChanged() ? &capture : nullptr;
 
 
     if (notifyOnValueChanged())
@@ -253,7 +253,7 @@ QV4::ReturnedValue QQmlJavaScriptExpression::evaluate(QV4::CallData *callData, b
         for (int ii = 0; ii < capture.errorString->count(); ++ii)
             qWarning("%s", qPrintable(capture.errorString->at(ii)));
         delete capture.errorString;
-        capture.errorString = 0;
+        capture.errorString = nullptr;
     }
 
     while (QQmlJavaScriptExpressionGuard *g = capture.guards.takeFirst())
@@ -274,7 +274,7 @@ void QQmlPropertyCapture::captureProperty(QQmlNotifier *n, Duration duration)
     while (!guards.isEmpty() && !guards.first()->isConnected(n))
         guards.takeFirst()->Delete();
 
-    QQmlJavaScriptExpressionGuard *g = 0;
+    QQmlJavaScriptExpressionGuard *g = nullptr;
     if (!guards.isEmpty()) {
         g = guards.takeFirst();
         g->cancelNotify();
@@ -323,7 +323,7 @@ void QQmlPropertyCapture::captureProperty(QObject *o, int c, int n, Duration dur
         while (!guards.isEmpty() && !guards.first()->isConnected(o, n))
             guards.takeFirst()->Delete();
 
-        QQmlJavaScriptExpressionGuard *g = 0;
+        QQmlJavaScriptExpressionGuard *g = nullptr;
         if (!guards.isEmpty()) {
             g = guards.takeFirst();
             g->cancelNotify();
diff --git a/src/qml/qml/qqmljavascriptexpression_p.h b/src/qml/qml/qqmljavascriptexpression_p.h
index 1cb6d7bfd1..a028850074 100644
--- a/src/qml/qml/qqmljavascriptexpression_p.h
+++ b/src/qml/qml/qqmljavascriptexpression_p.h
@@ -62,7 +62,7 @@ struct QQmlSourceLocation;
 class QQmlDelayedError
 {
 public:
-    inline QQmlDelayedError() : nextError(0), prevError(0) {}
+    inline QQmlDelayedError() : nextError(nullptr), prevError(nullptr) {}
     inline ~QQmlDelayedError() { removeError(); }
 
     bool addError(QQmlEnginePrivate *);
@@ -71,8 +71,8 @@ public:
         if (!prevError) return;
         if (nextError) nextError->prevError = prevError;
         *prevError = nextError;
-        nextError = 0;
-        prevError = 0;
+        nextError = nullptr;
+        prevError = nullptr;
     }
 
     inline bool isValid() const { return m_error.isValid(); }
@@ -117,7 +117,7 @@ public:
     QQmlSourceLocation sourceLocation() const;
     void setSourceLocation(const QQmlSourceLocation &location);
 
-    bool isValid() const { return context() != 0; }
+    bool isValid() const { return context() != nullptr; }
 
     QQmlContextData *context() const { return m_context; }
     void setContext(QQmlContextData *context);
@@ -193,11 +193,11 @@ class QQmlPropertyCapture
 {
 public:
     QQmlPropertyCapture(QQmlEngine *engine, QQmlJavaScriptExpression *e, QQmlJavaScriptExpression::DeleteWatcher *w)
-    : engine(engine), expression(e), watcher(w), errorString(0) { }
+    : engine(engine), expression(e), watcher(w), errorString(nullptr) { }
 
     ~QQmlPropertyCapture()  {
         Q_ASSERT(guards.isEmpty());
-        Q_ASSERT(errorString == 0);
+        Q_ASSERT(errorString == nullptr);
     }
 
     enum Duration {
@@ -217,7 +217,7 @@ public:
 };
 
 QQmlJavaScriptExpression::DeleteWatcher::DeleteWatcher(QQmlJavaScriptExpression *e)
-: _c(0), _w(0), _s(e)
+: _c(nullptr), _w(nullptr), _s(e)
 {
     if (e->m_scopeObject.isT1()) {
         _w = &_s;
@@ -231,14 +231,14 @@ QQmlJavaScriptExpression::DeleteWatcher::DeleteWatcher(QQmlJavaScriptExpression
 
 QQmlJavaScriptExpression::DeleteWatcher::~DeleteWatcher()
 {
-    Q_ASSERT(*_w == 0 || (*_w == _s && _s->m_scopeObject.isT2()));
+    Q_ASSERT(*_w == nullptr || (*_w == _s && _s->m_scopeObject.isT2()));
     if (*_w && _s->m_scopeObject.asT2() == this)
         _s->m_scopeObject = _c;
 }
 
 bool QQmlJavaScriptExpression::DeleteWatcher::wasDeleted() const
 {
-    return *_w == 0;
+    return *_w == nullptr;
 }
 
 bool QQmlJavaScriptExpression::notifyOnValueChanged() const
@@ -272,12 +272,12 @@ inline void QQmlJavaScriptExpression::clearError()
 {
     if (m_error)
         delete m_error;
-    m_error = 0;
+    m_error = nullptr;
 }
 
 QQmlJavaScriptExpressionGuard::QQmlJavaScriptExpressionGuard(QQmlJavaScriptExpression *e)
     : QQmlNotifierEndpoint(QQmlNotifierEndpoint::QQmlJavaScriptExpressionGuard),
-      expression(e), next(0)
+      expression(e), next(nullptr)
 {
 }
 
diff --git a/src/qml/qml/qqmllist.cpp b/src/qml/qml/qqmllist.cpp
index 9bfdd3da35..ac6e3695fe 100644
--- a/src/qml/qml/qqmllist.cpp
+++ b/src/qml/qml/qqmllist.cpp
@@ -55,7 +55,7 @@ QQmlListReference QQmlListReferencePrivate::init(const QQmlListProperty<QObject>
 
     if (!prop.object) return rv;
 
-    QQmlEnginePrivate *p = engine?QQmlEnginePrivate::get(engine):0;
+    QQmlEnginePrivate *p = engine?QQmlEnginePrivate::get(engine):nullptr;
 
     int listType = p?p->listType(propType):QQmlMetaType::listType(propType);
     if (listType == -1) return rv;
@@ -117,7 +117,7 @@ The \l {Qt Quick 1} version of this class is named QDeclarativeListReference.
 Constructs an invalid instance.
 */
 QQmlListReference::QQmlListReference()
-: d(0)
+: d(nullptr)
 {
 }
 
@@ -131,17 +131,17 @@ Passing \a engine is required to access some QML created list properties.  If in
 is available, pass it.
 */
 QQmlListReference::QQmlListReference(QObject *object, const char *property, QQmlEngine *engine)
-: d(0)
+: d(nullptr)
 {
     if (!object || !property) return;
 
     QQmlPropertyData local;
     QQmlPropertyData *data =
-        QQmlPropertyCache::property(engine, object, QLatin1String(property), 0, local);
+        QQmlPropertyCache::property(engine, object, QLatin1String(property), nullptr, local);
 
     if (!data || !data->isQList()) return;
 
-    QQmlEnginePrivate *p = engine?QQmlEnginePrivate::get(engine):0;
+    QQmlEnginePrivate *p = engine?QQmlEnginePrivate::get(engine):nullptr;
 
     int listType = p?p->listType(data->propType()):QQmlMetaType::listType(data->propType());
     if (listType == -1) return;
@@ -151,7 +151,7 @@ QQmlListReference::QQmlListReference(QObject *object, const char *property, QQml
     d->elementType = p ? p->rawMetaObjectForType(listType) : QQmlMetaType::qmlType(listType).baseMetaObject();
     d->propertyType = data->propType();
 
-    void *args[] = { &d->property, 0 };
+    void *args[] = { &d->property, nullptr };
     QMetaObject::metacall(object, QMetaObject::ReadProperty, data->coreIndex(), args);
 }
 
@@ -191,7 +191,7 @@ Returns the list property's object.  Returns 0 if the reference is invalid.
 QObject *QQmlListReference::object() const
 {
     if (isValid()) return d->object;
-    else return 0;
+    else return nullptr;
 }
 
 /*!
@@ -204,7 +204,7 @@ to a list.
 const QMetaObject *QQmlListReference::listElementType() const
 {
     if (isValid()) return d->elementType.metaObject();
-    else return 0;
+    else return nullptr;
 }
 
 /*!
@@ -301,7 +301,7 @@ Returns the list element at \a index, or 0 if the operation failed.
 */
 QObject *QQmlListReference::at(int index) const
 {
-    if (!canAt()) return 0;
+    if (!canAt()) return nullptr;
 
     return d->property.at(&d->property, index);
 }
diff --git a/src/qml/qml/qqmllistwrapper.cpp b/src/qml/qml/qqmllistwrapper.cpp
index cdeb991e11..3fbe3df2ab 100644
--- a/src/qml/qml/qqmllistwrapper.cpp
+++ b/src/qml/qml/qqmllistwrapper.cpp
@@ -77,7 +77,7 @@ ReturnedValue QmlListWrapper::create(ExecutionEngine *engine, QObject *object, i
     Scoped<QmlListWrapper> r(scope, engine->memoryManager->allocObject<QmlListWrapper>());
     r->d()->object = object;
     r->d()->propertyType = propType;
-    void *args[] = { &r->d()->property(), 0 };
+    void *args[] = { &r->d()->property(), nullptr };
     QMetaObject::metacall(object, QMetaObject::ReadProperty, propId, args);
     return r.asReturnedValue();
 }
@@ -151,7 +151,7 @@ bool QmlListWrapper::put(Managed *m, String *name, const Value &value)
 
 void QmlListWrapper::advanceIterator(Managed *m, ObjectIterator *it, Value *name, uint *index, Property *p, PropertyAttributes *attrs)
 {
-    name->setM(0);
+    name->setM(nullptr);
     *index = UINT_MAX;
     Q_ASSERT(m->as<QmlListWrapper>());
     QmlListWrapper *w = static_cast<QmlListWrapper *>(m);
diff --git a/src/qml/qml/qqmllocale.cpp b/src/qml/qml/qqmllocale.cpp
index eafe2792c1..2a5c58b47b 100644
--- a/src/qml/qml/qqmllocale.cpp
+++ b/src/qml/qml/qqmllocale.cpp
@@ -684,23 +684,23 @@ QV4LocaleDataDeletable::QV4LocaleDataDeletable(QV4::ExecutionEngine *engine)
     o->defineDefaultProperty(QStringLiteral("monthName"), QQmlLocaleData::method_monthName, 0);
     o->defineDefaultProperty(QStringLiteral("currencySymbol"), QQmlLocaleData::method_currencySymbol, 0);
     o->defineDefaultProperty(QStringLiteral("dateTimeFormat"), QQmlLocaleData::method_dateTimeFormat, 0);
-    o->defineAccessorProperty(QStringLiteral("name"), QQmlLocaleData::method_get_name, 0);
-    o->defineAccessorProperty(QStringLiteral("positiveSign"), QQmlLocaleData::method_get_positiveSign, 0);
-    o->defineAccessorProperty(QStringLiteral("uiLanguages"), QQmlLocaleData::method_get_uiLanguages, 0);
-    o->defineAccessorProperty(QStringLiteral("firstDayOfWeek"), QQmlLocaleData::method_get_firstDayOfWeek, 0);
-    o->defineAccessorProperty(QStringLiteral("pmText"), QQmlLocaleData::method_get_pmText, 0);
-    o->defineAccessorProperty(QStringLiteral("percent"), QQmlLocaleData::method_get_percent, 0);
-    o->defineAccessorProperty(QStringLiteral("textDirection"), QQmlLocaleData::method_get_textDirection, 0);
-    o->defineAccessorProperty(QStringLiteral("weekDays"), QQmlLocaleData::method_get_weekDays, 0);
-    o->defineAccessorProperty(QStringLiteral("negativeSign"), QQmlLocaleData::method_get_negativeSign, 0);
-    o->defineAccessorProperty(QStringLiteral("groupSeparator"), QQmlLocaleData::method_get_groupSeparator, 0);
-    o->defineAccessorProperty(QStringLiteral("decimalPoint"), QQmlLocaleData::method_get_decimalPoint, 0);
-    o->defineAccessorProperty(QStringLiteral("nativeLanguageName"), QQmlLocaleData::method_get_nativeLanguageName, 0);
-    o->defineAccessorProperty(QStringLiteral("nativeCountryName"), QQmlLocaleData::method_get_nativeCountryName, 0);
-    o->defineAccessorProperty(QStringLiteral("zeroDigit"), QQmlLocaleData::method_get_zeroDigit, 0);
-    o->defineAccessorProperty(QStringLiteral("amText"), QQmlLocaleData::method_get_amText, 0);
-    o->defineAccessorProperty(QStringLiteral("measurementSystem"), QQmlLocaleData::method_get_measurementSystem, 0);
-    o->defineAccessorProperty(QStringLiteral("exponential"), QQmlLocaleData::method_get_exponential, 0);
+    o->defineAccessorProperty(QStringLiteral("name"), QQmlLocaleData::method_get_name, nullptr);
+    o->defineAccessorProperty(QStringLiteral("positiveSign"), QQmlLocaleData::method_get_positiveSign, nullptr);
+    o->defineAccessorProperty(QStringLiteral("uiLanguages"), QQmlLocaleData::method_get_uiLanguages, nullptr);
+    o->defineAccessorProperty(QStringLiteral("firstDayOfWeek"), QQmlLocaleData::method_get_firstDayOfWeek, nullptr);
+    o->defineAccessorProperty(QStringLiteral("pmText"), QQmlLocaleData::method_get_pmText, nullptr);
+    o->defineAccessorProperty(QStringLiteral("percent"), QQmlLocaleData::method_get_percent, nullptr);
+    o->defineAccessorProperty(QStringLiteral("textDirection"), QQmlLocaleData::method_get_textDirection, nullptr);
+    o->defineAccessorProperty(QStringLiteral("weekDays"), QQmlLocaleData::method_get_weekDays, nullptr);
+    o->defineAccessorProperty(QStringLiteral("negativeSign"), QQmlLocaleData::method_get_negativeSign, nullptr);
+    o->defineAccessorProperty(QStringLiteral("groupSeparator"), QQmlLocaleData::method_get_groupSeparator, nullptr);
+    o->defineAccessorProperty(QStringLiteral("decimalPoint"), QQmlLocaleData::method_get_decimalPoint, nullptr);
+    o->defineAccessorProperty(QStringLiteral("nativeLanguageName"), QQmlLocaleData::method_get_nativeLanguageName, nullptr);
+    o->defineAccessorProperty(QStringLiteral("nativeCountryName"), QQmlLocaleData::method_get_nativeCountryName, nullptr);
+    o->defineAccessorProperty(QStringLiteral("zeroDigit"), QQmlLocaleData::method_get_zeroDigit, nullptr);
+    o->defineAccessorProperty(QStringLiteral("amText"), QQmlLocaleData::method_get_amText, nullptr);
+    o->defineAccessorProperty(QStringLiteral("measurementSystem"), QQmlLocaleData::method_get_measurementSystem, nullptr);
+    o->defineAccessorProperty(QStringLiteral("exponential"), QQmlLocaleData::method_get_exponential, nullptr);
 
     prototype.set(engine, o);
 }
diff --git a/src/qml/qml/qqmllocale_p.h b/src/qml/qml/qqmllocale_p.h
index 57666c64f1..8341b1f555 100644
--- a/src/qml/qml/qqmllocale_p.h
+++ b/src/qml/qml/qqmllocale_p.h
@@ -163,7 +163,7 @@ struct QQmlLocaleData : public QV4::Object
         const QQmlLocaleData *data = o ? o->as<QQmlLocaleData>() : nullptr;
         if (!data) {
             scope.engine->throwTypeError();
-            return 0;
+            return nullptr;
         }
         return data->d()->locale;
     }
diff --git a/src/qml/qml/qqmlloggingcategory_p.h b/src/qml/qml/qqmlloggingcategory_p.h
index 2b7f2f5b53..544db1fe33 100644
--- a/src/qml/qml/qqmlloggingcategory_p.h
+++ b/src/qml/qml/qqmlloggingcategory_p.h
@@ -67,7 +67,7 @@ class QQmlLoggingCategory : public QObject, public QQmlParserStatus
     Q_PROPERTY(QString name READ name WRITE setName)
 
 public:
-    QQmlLoggingCategory(QObject *parent = 0);
+    QQmlLoggingCategory(QObject *parent = nullptr);
     virtual ~QQmlLoggingCategory();
 
     QString name() const;
diff --git a/src/qml/qml/qqmlmetatype.cpp b/src/qml/qml/qqmlmetatype.cpp
index 76d40bf442..7754f0fddc 100644
--- a/src/qml/qml/qqmlmetatype.cpp
+++ b/src/qml/qml/qqmlmetatype.cpp
@@ -170,7 +170,7 @@ public:
     ~QQmlTypePrivate();
 
     void init() const;
-    void initEnums(const QQmlPropertyCache *cache = 0) const;
+    void initEnums(const QQmlPropertyCache *cache = nullptr) const;
     void insertEnums(const QMetaObject *metaObject) const;
     void insertEnumsFromPropertyCache(const QQmlPropertyCache *cache) const;
 
@@ -315,31 +315,31 @@ QJSValue QQmlType::SingletonInstanceInfo::scriptApi(QQmlEngine *e) const
 QHash<const QMetaObject *, int> QQmlTypePrivate::attachedPropertyIds;
 
 QQmlTypePrivate::QQmlTypePrivate(QQmlType::RegistrationType type)
-: refCount(1), regType(type), iid(0), typeId(0), listId(0), revision(0),
-    containsRevisionedAttributes(false), baseMetaObject(0),
+: refCount(1), regType(type), iid(nullptr), typeId(0), listId(0), revision(0),
+    containsRevisionedAttributes(false), baseMetaObject(nullptr),
     index(-1), isSetup(false), isEnumSetup(false), haveSuperType(false)
 {
     switch (type) {
     case QQmlType::CppType:
         extraData.cd = new QQmlCppTypeData;
         extraData.cd->allocationSize = 0;
-        extraData.cd->newFunc = 0;
+        extraData.cd->newFunc = nullptr;
         extraData.cd->parserStatusCast = -1;
-        extraData.cd->extFunc = 0;
-        extraData.cd->extMetaObject = 0;
-        extraData.cd->customParser = 0;
-        extraData.cd->attachedPropertiesFunc = 0;
-        extraData.cd->attachedPropertiesType = 0;
+        extraData.cd->extFunc = nullptr;
+        extraData.cd->extMetaObject = nullptr;
+        extraData.cd->customParser = nullptr;
+        extraData.cd->attachedPropertiesFunc = nullptr;
+        extraData.cd->attachedPropertiesType = nullptr;
         extraData.cd->propertyValueSourceCast = -1;
         extraData.cd->propertyValueInterceptorCast = -1;
         break;
     case QQmlType::SingletonType:
     case QQmlType::CompositeSingletonType:
         extraData.sd = new QQmlSingletonTypeData;
-        extraData.sd->singletonInstanceInfo = 0;
+        extraData.sd->singletonInstanceInfo = nullptr;
         break;
     case QQmlType::InterfaceType:
-        extraData.cd = 0;
+        extraData.cd = nullptr;
         break;
     case QQmlType::CompositeType:
         extraData.fd = new QQmlCompositeTypeData;
@@ -406,7 +406,7 @@ QQmlType::QQmlType(QQmlMetaTypeData *data, const QString &elementName, const QQm
     d->extraData.sd->singletonInstanceInfo->qobjectCallback = type.qobjectApi;
     d->extraData.sd->singletonInstanceInfo->typeName = QString::fromUtf8(type.typeName);
     d->extraData.sd->singletonInstanceInfo->instanceMetaObject
-        = (type.qobjectApi && type.version >= 1) ? type.instanceMetaObject : 0;
+        = (type.qobjectApi && type.version >= 1) ? type.instanceMetaObject : nullptr;
 }
 
 QQmlType::QQmlType(QQmlMetaTypeData *data, const QString &elementName, const QQmlPrivate::RegisterCompositeSingletonType &type)
@@ -478,7 +478,7 @@ QQmlType::QQmlType(QQmlMetaTypeData *data, const QString &elementName, const QQm
 }
 
 QQmlType::QQmlType()
-    : d(0)
+    : d(nullptr)
 {
 }
 
@@ -586,10 +586,10 @@ QQmlPropertyCache *QQmlType::compositePropertyCache(QQmlEnginePrivate *engine) c
     // similar logic to resolveCompositeBaseType
     Q_ASSERT(isComposite());
     if (!engine)
-        return 0;
+        return nullptr;
     QQmlRefPointer<QQmlTypeData> td(engine->typeLoader.getType(sourceUrl()), QQmlRefPointer<QQmlTypeData>::Adopt);
     if (td.isNull() || !td->isComplete())
-        return 0;
+        return nullptr;
     QV4::CompiledData::CompilationUnit *compilationUnit = td->compilationUnit();
     return compilationUnit->rootPropertyCache();
 }
@@ -739,7 +739,7 @@ void QQmlTypePrivate::init() const
 
     // Check for revisioned details
     {
-        const QMetaObject *mo = 0;
+        const QMetaObject *mo = nullptr;
         if (metaObjects.isEmpty())
             mo = baseMetaObject;
         else
@@ -792,7 +792,7 @@ void QQmlTypePrivate::insertEnums(const QMetaObject *metaObject) const
     for (int ii = 0; ii < metaObject->enumeratorCount(); ++ii) {
         QMetaEnum e = metaObject->enumerator(ii);
         const bool isScoped = e.isScoped();
-        QStringHash<int> *scoped = isScoped ? new QStringHash<int>() : 0;
+        QStringHash<int> *scoped = isScoped ? new QStringHash<int>() : nullptr;
 
         for (int jj = 0; jj < e.keyCount(); ++jj) {
             const QString key = QString::fromUtf8(e.key(jj));
@@ -888,7 +888,7 @@ QString QQmlType::qmlTypeName() const
 QObject *QQmlType::create() const
 {
     if (!d || !isCreatable())
-        return 0;
+        return nullptr;
 
     d->init();
 
@@ -921,25 +921,25 @@ void QQmlType::create(QObject **out, void **memory, size_t additionalMemory) con
 QQmlType::SingletonInstanceInfo *QQmlType::singletonInstanceInfo() const
 {
     if (!d)
-        return 0;
+        return nullptr;
     if (d->regType != SingletonType && d->regType != CompositeSingletonType)
-        return 0;
+        return nullptr;
     return d->extraData.sd->singletonInstanceInfo;
 }
 
 QQmlCustomParser *QQmlType::customParser() const
 {
     if (!d)
-        return 0;
+        return nullptr;
     if (d->regType != CppType)
-        return 0;
+        return nullptr;
     return d->extraData.cd->customParser;
 }
 
 QQmlType::CreateFunc QQmlType::createFunction() const
 {
     if (!d || d->regType != CppType)
-        return 0;
+        return nullptr;
     return d->extraData.cd->newFunc;
 }
 
@@ -1004,7 +1004,7 @@ int QQmlType::qListTypeId() const
 const QMetaObject *QQmlType::metaObject() const
 {
     if (!d)
-        return 0;
+        return nullptr;
     d->init();
 
     if (d->metaObjects.isEmpty())
@@ -1016,7 +1016,7 @@ const QMetaObject *QQmlType::metaObject() const
 
 const QMetaObject *QQmlType::baseMetaObject() const
 {
-    return d ? d->baseMetaObject : 0;
+    return d ? d->baseMetaObject : nullptr;
 }
 
 bool QQmlType::containsRevisionedAttributes() const
@@ -1036,7 +1036,7 @@ int QQmlType::metaObjectRevision() const
 QQmlAttachedPropertiesFunc QQmlType::attachedPropertiesFunction(QQmlEnginePrivate *engine) const
 {
     if (!d)
-        return 0;
+        return nullptr;
     if (d->regType == CppType)
         return d->extraData.cd->attachedPropertiesFunc;
 
@@ -1049,7 +1049,7 @@ QQmlAttachedPropertiesFunc QQmlType::attachedPropertiesFunction(QQmlEnginePrivat
 const QMetaObject *QQmlType::attachedPropertiesType(QQmlEnginePrivate *engine) const
 {
     if (!d)
-        return 0;
+        return nullptr;
     if (d->regType == CppType)
         return d->extraData.cd->attachedPropertiesType;
 
@@ -1101,7 +1101,7 @@ int QQmlType::propertyValueInterceptorCast() const
 const char *QQmlType::interfaceIId() const
 {
     if (!d || d->regType != InterfaceType)
-        return 0;
+        return nullptr;
     return d->iid;
 }
 
@@ -1125,7 +1125,7 @@ int QQmlType::enumValue(QQmlEnginePrivate *engine, const QHashedStringRef &name,
 {
     Q_ASSERT(ok);
     if (d) {
-        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : 0;
+        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : nullptr;
 
         *ok = true;
 
@@ -1144,7 +1144,7 @@ int QQmlType::enumValue(QQmlEnginePrivate *engine, const QHashedCStringRef &name
 {
     Q_ASSERT(ok);
     if (d) {
-        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : 0;
+        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : nullptr;
 
         *ok = true;
 
@@ -1163,7 +1163,7 @@ int QQmlType::enumValue(QQmlEnginePrivate *engine, const QV4::String *name, bool
 {
     Q_ASSERT(ok);
     if (d) {
-        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : 0;
+        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : nullptr;
         *ok = true;
 
         d->initEnums(cache);
@@ -1181,7 +1181,7 @@ int QQmlType::scopedEnumIndex(QQmlEnginePrivate *engine, const QV4::String *name
 {
     Q_ASSERT(ok);
     if (d) {
-        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : 0;
+        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : nullptr;
         *ok = true;
 
         d->initEnums(cache);
@@ -1199,7 +1199,7 @@ int QQmlType::scopedEnumIndex(QQmlEnginePrivate *engine, const QString &name, bo
 {
     Q_ASSERT(ok);
     if (d) {
-        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : 0;
+        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : nullptr;
         *ok = true;
 
         d->initEnums(cache);
@@ -1251,7 +1251,7 @@ int QQmlType::scopedEnumValue(QQmlEnginePrivate *engine, const QByteArray &scope
 {
     Q_ASSERT(ok);
     if (d) {
-        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : 0;
+        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : nullptr;
         *ok = true;
 
         d->initEnums(cache);
@@ -1274,7 +1274,7 @@ int QQmlType::scopedEnumValue(QQmlEnginePrivate *engine, const QStringRef &scope
 {
     Q_ASSERT(ok);
     if (d) {
-        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : 0;
+        const QQmlPropertyCache *cache = isComposite() ? compositePropertyCache(engine) : nullptr;
         *ok = true;
 
         d->initEnums(cache);
@@ -1340,7 +1340,7 @@ QQmlTypeModule::QQmlTypeModule()
 
 QQmlTypeModule::~QQmlTypeModule()
 {
-    delete d; d = 0;
+    delete d; d = nullptr;
 }
 
 QString QQmlTypeModule::module() const
@@ -1439,7 +1439,7 @@ void QQmlTypeModule::walkCompositeSingletons(const std::function<void(const QQml
 }
 
 QQmlTypeModuleVersion::QQmlTypeModuleVersion()
-: m_module(0), m_minor(0)
+: m_module(nullptr), m_minor(0)
 {
 }
 
@@ -1699,7 +1699,7 @@ QQmlType QQmlMetaType::registerCompositeSingletonType(const QQmlPrivate::Registe
     bool fileImport = false;
     if (*(type.uri) == '\0')
         fileImport = true;
-    if (!checkRegistration(QQmlType::CompositeSingletonType, data, fileImport ? 0 : type.uri, typeName))
+    if (!checkRegistration(QQmlType::CompositeSingletonType, data, fileImport ? nullptr : type.uri, typeName))
         return QQmlType();
 
     QQmlType dtype(data, typeName, type);
@@ -1721,7 +1721,7 @@ QQmlType QQmlMetaType::registerCompositeType(const QQmlPrivate::RegisterComposit
     bool fileImport = false;
     if (*(type.uri) == '\0')
         fileImport = true;
-    if (!checkRegistration(QQmlType::CompositeType, data, fileImport?0:type.uri, typeName, type.versionMajor))
+    if (!checkRegistration(QQmlType::CompositeType, data, fileImport?nullptr:type.uri, typeName, type.versionMajor))
         return QQmlType();
 
     QQmlType dtype(data, typeName, type);
@@ -1745,13 +1745,13 @@ void QQmlMetaType::registerInternalCompositeType(QV4::CompiledData::CompilationU
                                                      QtMetaTypePrivate::QMetaTypeFunctionHelper<QObject*>::Construct,
                                                      sizeof(QObject*),
                                                      static_cast<QFlags<QMetaType::TypeFlag> >(QtPrivate::QMetaTypeTypeFlags<QObject*>::Flags),
-                                                     0);
+                                                     nullptr);
     int lst_type = QMetaType::registerNormalizedType(lst,
                                                      QtMetaTypePrivate::QMetaTypeFunctionHelper<QQmlListProperty<QObject> >::Destruct,
                                                      QtMetaTypePrivate::QMetaTypeFunctionHelper<QQmlListProperty<QObject> >::Construct,
                                                      sizeof(QQmlListProperty<QObject>),
                                                      static_cast<QFlags<QMetaType::TypeFlag> >(QtPrivate::QMetaTypeTypeFlags<QQmlListProperty<QObject> >::Flags),
-                                                     static_cast<QMetaObject*>(0));
+                                                     static_cast<QMetaObject*>(nullptr));
 
     compilationUnit->metaTypeId = ptr_type;
     compilationUnit->listMetaTypeId = lst_type;
@@ -1964,7 +1964,7 @@ QObject *QQmlMetaType::toQObject(const QVariant &v, bool *ok)
 {
     if (!isQObject(v.userType())) {
         if (ok) *ok = false;
-        return 0;
+        return nullptr;
     }
 
     if (ok) *ok = true;
@@ -2014,7 +2014,7 @@ int QQmlMetaType::attachedPropertiesFuncId(QQmlEnginePrivate *engine, const QMet
 QQmlAttachedPropertiesFunc QQmlMetaType::attachedPropertiesFuncById(QQmlEnginePrivate *engine, int id)
 {
     if (id < 0)
-        return 0;
+        return nullptr;
     QMutexLocker lock(metaTypeDataLock());
     QQmlMetaTypeData *data = metaTypeData();
     return data->types.at(id).attachedPropertiesFunction(engine);
@@ -2107,7 +2107,7 @@ const char *QQmlMetaType::interfaceIId(int userType)
     if (type.isInterface() && type.typeId() == userType)
         return type.interfaceIId();
     else
-        return 0;
+        return nullptr;
 }
 
 bool QQmlMetaType::isList(int userType)
diff --git a/src/qml/qml/qqmlmetatype_p.h b/src/qml/qml/qqmlmetatype_p.h
index cee1070a09..07bef526ba 100644
--- a/src/qml/qml/qqmlmetatype_p.h
+++ b/src/qml/qml/qqmlmetatype_p.h
@@ -109,7 +109,7 @@ public:
     static QMetaMethod defaultMethod(QObject *);
 
     static bool isQObject(int);
-    static QObject *toQObject(const QVariant &, bool *ok = 0);
+    static QObject *toQObject(const QVariant &, bool *ok = nullptr);
 
     static int listType(int);
     static int attachedPropertiesFuncId(QQmlEnginePrivate *engine, const QMetaObject *);
@@ -163,7 +163,7 @@ public:
         return d == other.d;
     }
 
-    bool isValid() const { return d != 0; }
+    bool isValid() const { return d != nullptr; }
     const QQmlTypePrivate *key() const { return d; }
 
     QByteArray typeName() const;
@@ -218,7 +218,7 @@ public:
     {
     public:
         SingletonInstanceInfo()
-            : scriptCallback(0), qobjectCallback(0), instanceMetaObject(0) {}
+            : scriptCallback(nullptr), qobjectCallback(nullptr), instanceMetaObject(nullptr) {}
 
         QJSValue (*scriptCallback)(QQmlEngine *, QJSEngine *);
         QObject *(*qobjectCallback)(QQmlEngine *, QJSEngine *);
diff --git a/src/qml/qml/qqmlnotifier.cpp b/src/qml/qml/qqmlnotifier.cpp
index e068ad174a..ac247ae0ad 100644
--- a/src/qml/qml/qqmlnotifier.cpp
+++ b/src/qml/qml/qqmlnotifier.cpp
@@ -51,7 +51,7 @@ void QQmlJavaScriptExpressionGuard_callback(QQmlNotifierEndpoint *, void **);
 void QQmlVMEMetaObjectEndpoint_callback(QQmlNotifierEndpoint *, void **);
 
 static Callback QQmlNotifier_callbacks[] = {
-    0,
+    nullptr,
     QQmlBoundSignal_callback,
     QQmlJavaScriptExpressionGuard_callback,
     QQmlVMEMetaObjectEndpoint_callback
@@ -59,9 +59,9 @@ static Callback QQmlNotifier_callbacks[] = {
 
 namespace {
     struct NotifyListTraversalData {
-        NotifyListTraversalData(QQmlNotifierEndpoint *ep = 0)
+        NotifyListTraversalData(QQmlNotifierEndpoint *ep = nullptr)
             : originalSenderPtr(0)
-            , disconnectWatch(0)
+            , disconnectWatch(nullptr)
             , endpoint(ep)
         {}
 
diff --git a/src/qml/qml/qqmlnotifier_p.h b/src/qml/qml/qqmlnotifier_p.h
index a99b13f155..39761875bf 100644
--- a/src/qml/qml/qqmlnotifier_p.h
+++ b/src/qml/qml/qqmlnotifier_p.h
@@ -129,7 +129,7 @@ private:
 };
 
 QQmlNotifier::QQmlNotifier()
-: endpoints(0)
+: endpoints(nullptr)
 {
 }
 
@@ -142,22 +142,22 @@ QQmlNotifier::~QQmlNotifier()
 
         if (n->isNotifying()) *((qintptr *)(n->senderPtr & ~0x1)) = 0;
 
-        n->next = 0;
-        n->prev = 0;
+        n->next = nullptr;
+        n->prev = nullptr;
         n->senderPtr = 0;
         n->sourceSignal = -1;
     }
-    endpoints = 0;
+    endpoints = nullptr;
 }
 
 void QQmlNotifier::notify()
 {
-    void *args[] = { 0 };
+    void *args[] = { nullptr };
     if (endpoints) emitNotify(endpoints, args);
 }
 
 QQmlNotifierEndpoint::QQmlNotifierEndpoint(Callback callback)
-: next(0), prev(0), senderPtr(0), callback(callback), needsConnectNotify(false), sourceSignal(-1)
+: next(nullptr), prev(nullptr), senderPtr(0), callback(callback), needsConnectNotify(false), sourceSignal(-1)
 {
 }
 
@@ -168,7 +168,7 @@ QQmlNotifierEndpoint::~QQmlNotifierEndpoint()
 
 bool QQmlNotifierEndpoint::isConnected() const
 {
-    return prev != 0;
+    return prev != nullptr;
 }
 
 /*! \internal
@@ -212,8 +212,8 @@ void QQmlNotifierEndpoint::disconnect()
     }
 
     if (isNotifying()) *((qintptr *)(senderPtr & ~0x1)) = 0;
-    next = 0;
-    prev = 0;
+    next = nullptr;
+    prev = nullptr;
     senderPtr = 0;
     sourceSignal = -1;
 }
diff --git a/src/qml/qml/qqmlobjectcreator.cpp b/src/qml/qml/qqmlobjectcreator.cpp
index caf063c79f..36e56a01f8 100644
--- a/src/qml/qml/qqmlobjectcreator.cpp
+++ b/src/qml/qml/qqmlobjectcreator.cpp
@@ -82,13 +82,13 @@ QQmlObjectCreator::QQmlObjectCreator(QQmlContextData *parentContext, QV4::Compil
 {
     init(parentContext);
 
-    sharedState->componentAttached = 0;
+    sharedState->componentAttached = nullptr;
     sharedState->allCreatedBindings.allocate(compilationUnit->totalBindingsCount);
     sharedState->allParserStatusCallbacks.allocate(compilationUnit->totalParserStatusCount);
     sharedState->allCreatedObjects.allocate(compilationUnit->totalObjectCount);
-    sharedState->allJavaScriptObjects = 0;
+    sharedState->allJavaScriptObjects = nullptr;
     sharedState->creationContext = creationContext;
-    sharedState->rootContext = 0;
+    sharedState->rootContext = nullptr;
 
     if (auto profiler = QQmlEnginePrivate::get(engine)->profiler) {
         Q_QML_PROFILE_IF_ENABLED(QQmlProfilerDefinitions::ProfileCreating, profiler,
@@ -105,7 +105,7 @@ QQmlObjectCreator::QQmlObjectCreator(QQmlContextData *parentContext, QV4::Compil
     , propertyCaches(&compilationUnit->propertyCaches)
     , sharedState(inheritedSharedState)
     , topLevelCreator(false)
-    , incubator(0)
+    , incubator(nullptr)
 {
     init(parentContext);
 }
@@ -120,17 +120,17 @@ void QQmlObjectCreator::init(QQmlContextData *providedParentContext)
         compilationUnit->linkToEngine(v4);
 
     qmlUnit = compilationUnit->data;
-    context = 0;
-    _qobject = 0;
-    _scopeObject = 0;
-    _bindingTarget = 0;
-    _valueTypeProperty = 0;
-    _compiledObject = 0;
+    context = nullptr;
+    _qobject = nullptr;
+    _scopeObject = nullptr;
+    _bindingTarget = nullptr;
+    _valueTypeProperty = nullptr;
+    _compiledObject = nullptr;
     _compiledObjectIndex = -1;
-    _ddata = 0;
-    _propertyCache = 0;
-    _vmeMetaObject = 0;
-    _qmlContext = 0;
+    _ddata = nullptr;
+    _propertyCache = nullptr;
+    _vmeMetaObject = nullptr;
+    _qmlContext = nullptr;
 }
 
 QQmlObjectCreator::~QQmlObjectCreator()
@@ -142,7 +142,7 @@ QQmlObjectCreator::~QQmlObjectCreator()
         for (int i = 0; i < sharedState->allParserStatusCallbacks.count(); ++i) {
             QQmlParserStatus *ps = sharedState->allParserStatusCallbacks.at(i);
             if (ps)
-                ps->d = 0;
+                ps->d = nullptr;
         }
         while (sharedState->componentAttached) {
             QQmlComponentAttached *a = sharedState->componentAttached;
@@ -207,12 +207,12 @@ QObject *QQmlObjectCreator::create(int subComponentIndex, QObject *parent, QQmlI
     }
 
     if (topLevelCreator)
-        sharedState->allJavaScriptObjects = 0;
+        sharedState->allJavaScriptObjects = nullptr;
 
     phase = CreatingObjectsPhase2;
 
     if (interrupt && interrupt->shouldInterrupt())
-        return 0;
+        return nullptr;
 
     phase = ObjectsCreated;
 
@@ -796,7 +796,7 @@ bool QQmlObjectCreator::setPropertyBinding(const QQmlPropertyData *property, con
         }
         const int id = attachedType.attachedPropertiesId(QQmlEnginePrivate::get(engine));
         QObject *qmlObject = qmlAttachedPropertiesObjectById(id, _qobject);
-        if (!populateInstance(binding->value.objectIndex, qmlObject, qmlObject, /*value type property*/0))
+        if (!populateInstance(binding->value.objectIndex, qmlObject, qmlObject, /*value type property*/nullptr))
             return false;
         return true;
     }
@@ -814,12 +814,12 @@ bool QQmlObjectCreator::setPropertyBinding(const QQmlPropertyData *property, con
         QQmlPropertyData::WriteFlags propertyWriteFlags = QQmlPropertyData::BypassInterceptor |
                                                             QQmlPropertyData::RemoveBindingOnAliasWrite;
         int propertyWriteStatus = -1;
-        void *argv[] = { &ss, 0, &propertyWriteStatus, &propertyWriteFlags };
+        void *argv[] = { &ss, nullptr, &propertyWriteStatus, &propertyWriteFlags };
         QMetaObject::metacall(_qobject, QMetaObject::WriteProperty, property->coreIndex(), argv);
         return true;
     }
 
-    QObject *createdSubObject = 0;
+    QObject *createdSubObject = nullptr;
     if (binding->type == QV4::CompiledData::Binding::Type_Object) {
         createdSubObject = createInstance(binding->value.objectIndex, _bindingTarget);
         if (!createdSubObject)
@@ -833,9 +833,9 @@ bool QQmlObjectCreator::setPropertyBinding(const QQmlPropertyData *property, con
         const QV4::CompiledData::Object *obj = qmlUnit->objectAt(binding->value.objectIndex);
         if (stringAt(obj->inheritedTypeNameIndex).isEmpty()) {
 
-            QObject *groupObject = 0;
-            QQmlValueType *valueType = 0;
-            const QQmlPropertyData *valueTypeProperty = 0;
+            QObject *groupObject = nullptr;
+            QQmlValueType *valueType = nullptr;
+            const QQmlPropertyData *valueTypeProperty = nullptr;
             QObject *bindingTarget = _bindingTarget;
 
             if (QQmlValueTypeFactory::isValueType(property->propType())) {
@@ -1008,7 +1008,7 @@ bool QQmlObjectCreator::setPropertyBinding(const QQmlPropertyData *property, con
         QQmlPropertyData::WriteFlags propertyWriteFlags = QQmlPropertyData::BypassInterceptor |
                                                             QQmlPropertyData::RemoveBindingOnAliasWrite;
         int propertyWriteStatus = -1;
-        void *argv[] = { 0, 0, &propertyWriteStatus, &propertyWriteFlags };
+        void *argv[] = { nullptr, nullptr, &propertyWriteStatus, &propertyWriteFlags };
 
         if (const char *iid = QQmlMetaType::interfaceIId(property->propType())) {
             void *ptr = createdSubObject->qt_metacast(iid);
@@ -1034,7 +1034,7 @@ bool QQmlObjectCreator::setPropertyBinding(const QQmlPropertyData *property, con
 
             void *itemToAdd = createdSubObject;
 
-            const char *iid = 0;
+            const char *iid = nullptr;
             int listItemType = QQmlEnginePrivate::get(engine)->listType(property->propType());
             if (listItemType != -1)
                 iid = QQmlMetaType::interfaceIId(listItemType);
@@ -1114,10 +1114,10 @@ QObject *QQmlObjectCreator::createInstance(int index, QObject *parent, bool isCo
     ActiveOCRestorer ocRestorer(this, QQmlEnginePrivate::get(engine));
 
     bool isComponent = false;
-    QObject *instance = 0;
-    QQmlData *ddata = 0;
-    QQmlCustomParser *customParser = 0;
-    QQmlParserStatus *parserStatus = 0;
+    QObject *instance = nullptr;
+    QQmlData *ddata = nullptr;
+    QQmlCustomParser *customParser = nullptr;
+    QQmlParserStatus *parserStatus = nullptr;
     bool installPropertyCache = true;
 
     if (obj->flags & QV4::CompiledData::Object::IsComponent) {
@@ -1137,11 +1137,11 @@ QObject *QQmlObjectCreator::createInstance(int index, QObject *parent, bool isCo
             Q_QML_OC_PROFILE(sharedState->profiler, profiler.update(
                                  compilationUnit, obj, type.qmlTypeName(), context->url()));
 
-            void *ddataMemory = 0;
+            void *ddataMemory = nullptr;
             type.create(&instance, &ddataMemory, sizeof(QQmlData));
             if (!instance) {
                 recordError(obj->location, tr("Unable to create object of type %1").arg(stringAt(obj->inheritedTypeNameIndex)));
-                return 0;
+                return nullptr;
             }
 
             {
@@ -1173,14 +1173,14 @@ QObject *QQmlObjectCreator::createInstance(int index, QObject *parent, bool isCo
             if (typeRef->compilationUnit->data->isSingleton())
             {
                 recordError(obj->location, tr("Composite Singleton Type %1 is not creatable").arg(stringAt(obj->inheritedTypeNameIndex)));
-                return 0;
+                return nullptr;
             }
 
             QQmlObjectCreator subCreator(context, typeRef->compilationUnit, sharedState.data());
             instance = subCreator.create();
             if (!instance) {
                 errors += subCreator.errors;
-                return 0;
+                return nullptr;
             }
         }
         if (instance->isWidgetType()) {
@@ -1244,8 +1244,8 @@ QObject *QQmlObjectCreator::createInstance(int index, QObject *parent, bool isCo
         }
         customParser->applyBindings(instance, compilationUnit, bindings);
 
-        customParser->engine = 0;
-        customParser->imports = (QQmlTypeNameCache*)0;
+        customParser->engine = nullptr;
+        customParser->imports = (QQmlTypeNameCache*)nullptr;
     }
 
     if (isComponent) {
@@ -1274,12 +1274,12 @@ QObject *QQmlObjectCreator::createInstance(int index, QObject *parent, bool isCo
 
     qSwap(_qmlContext, qmlContext);
 
-    bool result = populateInstance(index, instance, /*binding target*/instance, /*value type property*/0);
+    bool result = populateInstance(index, instance, /*binding target*/instance, /*value type property*/nullptr);
 
     qSwap(_qmlContext, qmlContext);
     qSwap(_scopeObject, scopeObject);
 
-    return result ? instance : 0;
+    return result ? instance : nullptr;
 }
 
 QQmlContextData *QQmlObjectCreator::finalize(QQmlInstantiationInterrupt &interrupt)
@@ -1303,7 +1303,7 @@ QQmlContextData *QQmlObjectCreator::finalize(QQmlInstantiationInterrupt &interru
                       QQmlPropertyData::DontRemoveBinding);
 
         if (watcher.hasRecursed() || interrupt.shouldInterrupt())
-            return 0;
+            return nullptr;
     }
 
     if (QQmlVME::componentCompleteEnabled()) { // the qml designer does the component complete later
@@ -1312,12 +1312,12 @@ QQmlContextData *QQmlObjectCreator::finalize(QQmlInstantiationInterrupt &interru
             QQmlParserStatus *status = sharedState->allParserStatusCallbacks.pop();
 
             if (status && status->d) {
-                status->d = 0;
+                status->d = nullptr;
                 status->componentComplete();
             }
 
             if (watcher.hasRecursed() || interrupt.shouldInterrupt())
-                return 0;
+                return nullptr;
         }
     }
 
@@ -1325,11 +1325,11 @@ QQmlContextData *QQmlObjectCreator::finalize(QQmlInstantiationInterrupt &interru
         QQmlEnginePrivate::FinalizeCallback callback = sharedState->finalizeCallbacks.at(ii);
         QObject *obj = callback.first;
         if (obj) {
-            void *args[] = { 0 };
+            void *args[] = { nullptr };
             QMetaObject::metacall(obj, QMetaObject::InvokeMetaMethod, callback.second, args);
         }
         if (watcher.hasRecursed())
-            return 0;
+            return nullptr;
     }
     sharedState->finalizeCallbacks.clear();
 
@@ -1344,7 +1344,7 @@ QQmlContextData *QQmlObjectCreator::finalize(QQmlInstantiationInterrupt &interru
             emit a->completed();
 
         if (watcher.hasRecursed() || interrupt.shouldInterrupt())
-            return 0;
+            return nullptr;
     }
 
     phase = Done;
@@ -1386,7 +1386,7 @@ bool QQmlObjectCreator::populateInstance(int index, QObject *instance, QObject *
 
     QQmlRefPointer<QQmlPropertyCache> cache = propertyCaches->at(_compiledObjectIndex);
 
-    QQmlVMEMetaObject *vmeMetaObject = 0;
+    QQmlVMEMetaObject *vmeMetaObject = nullptr;
     if (propertyCaches->needsVMEMetaObject(_compiledObjectIndex)) {
         Q_ASSERT(!cache.isNull());
         // install on _object
diff --git a/src/qml/qml/qqmlobjectcreator_p.h b/src/qml/qml/qqmlobjectcreator_p.h
index bef58b8c9a..399a5f6d4a 100644
--- a/src/qml/qml/qqmlobjectcreator_p.h
+++ b/src/qml/qml/qqmlobjectcreator_p.h
@@ -85,10 +85,10 @@ class Q_QML_PRIVATE_EXPORT QQmlObjectCreator
 {
     Q_DECLARE_TR_FUNCTIONS(QQmlObjectCreator)
 public:
-    QQmlObjectCreator(QQmlContextData *parentContext, QV4::CompiledData::CompilationUnit *compilationUnit, QQmlContextData *creationContext, QQmlIncubatorPrivate  *incubator = 0);
+    QQmlObjectCreator(QQmlContextData *parentContext, QV4::CompiledData::CompilationUnit *compilationUnit, QQmlContextData *creationContext, QQmlIncubatorPrivate  *incubator = nullptr);
     ~QQmlObjectCreator();
 
-    QObject *create(int subComponentIndex = -1, QObject *parent = 0, QQmlInstantiationInterrupt *interrupt = 0);
+    QObject *create(int subComponentIndex = -1, QObject *parent = nullptr, QQmlInstantiationInterrupt *interrupt = nullptr);
     bool populateDeferredProperties(QObject *instance, QQmlData::DeferredData *deferredData);
     bool populateDeferredBinding(const QQmlProperty &qmlProperty, QQmlData::DeferredData *deferredData, const QV4::CompiledData::Binding *binding);
     QQmlContextData *finalize(QQmlInstantiationInterrupt &interrupt);
@@ -108,7 +108,7 @@ private:
 
     void init(QQmlContextData *parentContext);
 
-    QObject *createInstance(int index, QObject *parent = 0, bool isContextObject = false);
+    QObject *createInstance(int index, QObject *parent = nullptr, bool isContextObject = false);
 
     bool populateInstance(int index, QObject *instance,
                           QObject *bindingTarget, const QQmlPropertyData *valueTypeProperty);
diff --git a/src/qml/qml/qqmlopenmetaobject.cpp b/src/qml/qml/qqmlopenmetaobject.cpp
index fc85030b3d..1b44bbdda3 100644
--- a/src/qml/qml/qqmlopenmetaobject.cpp
+++ b/src/qml/qml/qqmlopenmetaobject.cpp
@@ -51,7 +51,7 @@ QT_BEGIN_NAMESPACE
 class QQmlOpenMetaObjectTypePrivate
 {
 public:
-    QQmlOpenMetaObjectTypePrivate() : mem(0), cache(0), engine(0) {}
+    QQmlOpenMetaObjectTypePrivate() : mem(nullptr), cache(nullptr), engine(nullptr) {}
 
     void init(const QMetaObject *metaObj);
 
@@ -83,7 +83,7 @@ QQmlOpenMetaObjectType::~QQmlOpenMetaObjectType()
 
 void QQmlOpenMetaObjectType::clear()
 {
-    d->engine = 0;
+    d->engine = nullptr;
 }
 
 int QQmlOpenMetaObjectType::propertyOffset() const
@@ -182,7 +182,7 @@ class QQmlOpenMetaObjectPrivate
 {
 public:
     QQmlOpenMetaObjectPrivate(QQmlOpenMetaObject *_q)
-        : q(_q), parent(0), type(0), cacheProperties(false) {}
+        : q(_q), parent(nullptr), type(nullptr), cacheProperties(false) {}
 
     inline QPair<QVariant, bool> &getDataRef(int idx) {
         while (data.count() <= idx)
@@ -220,7 +220,7 @@ QQmlOpenMetaObject::QQmlOpenMetaObject(QObject *obj, const QMetaObject *base, bo
     d->autoCreate = automatic;
     d->object = obj;
 
-    d->type = new QQmlOpenMetaObjectType(base ? base : obj->metaObject(), 0);
+    d->type = new QQmlOpenMetaObjectType(base ? base : obj->metaObject(), nullptr);
     d->type->d->referers.insert(this);
 
     QObjectPrivate *op = QObjectPrivate::get(obj);
@@ -264,7 +264,7 @@ void QQmlOpenMetaObject::emitPropertyNotification(const QByteArray &propertyName
     QHash<QByteArray, int>::ConstIterator iter = d->type->d->names.constFind(propertyName);
     if (iter == d->type->d->names.constEnd())
         return;
-    activate(d->object, *iter + d->type->d->signalOffset, 0);
+    activate(d->object, *iter + d->type->d->signalOffset, nullptr);
 }
 
 int QQmlOpenMetaObject::metaCall(QObject *o, QMetaObject::Call c, int id, void **a)
@@ -284,7 +284,7 @@ int QQmlOpenMetaObject::metaCall(QObject *o, QMetaObject::Call c, int id, void *
                 prop.first = propertyWriteValue(propId, *reinterpret_cast<QVariant *>(a[0]));
                 prop.second = true;
                 propertyWritten(propId);
-                activate(o, d->type->d->signalOffset + propId, 0);
+                activate(o, d->type->d->signalOffset + propId, nullptr);
             }
         }
         return -1;
@@ -311,7 +311,7 @@ void QQmlOpenMetaObject::setValue(int id, const QVariant &value)
     QPair<QVariant, bool> &prop = d->getDataRef(id);
     prop.first = propertyWriteValue(id, value);
     prop.second = true;
-    activate(d->object, id + d->type->d->signalOffset, 0);
+    activate(d->object, id + d->type->d->signalOffset, nullptr);
 }
 
 QVariant QQmlOpenMetaObject::value(const QByteArray &name) const
@@ -353,7 +353,7 @@ bool QQmlOpenMetaObject::setValue(const QByteArray &name, const QVariant &val)
             return false;
 
         dataVal = val;
-        activate(d->object, id + d->type->d->signalOffset, 0);
+        activate(d->object, id + d->type->d->signalOffset, nullptr);
         return true;
     }
 
@@ -382,7 +382,7 @@ void QQmlOpenMetaObject::setCached(bool c)
     } else {
         if (d->type->d->cache)
             d->type->d->cache->release();
-        qmldata->propertyCache = 0;
+        qmldata->propertyCache = nullptr;
     }
 }
 
@@ -395,7 +395,7 @@ int QQmlOpenMetaObject::createProperty(const char *name, const char *)
         if (QQmlData *ddata = QQmlData::get(d->object, /*create*/false)) {
             if (ddata->propertyCache) {
                 ddata->propertyCache->release();
-                ddata->propertyCache = 0;
+                ddata->propertyCache = nullptr;
             }
         }
 
diff --git a/src/qml/qml/qqmlopenmetaobject_p.h b/src/qml/qml/qqmlopenmetaobject_p.h
index 4bb92489a5..bb5477dfbf 100644
--- a/src/qml/qml/qqmlopenmetaobject_p.h
+++ b/src/qml/qml/qqmlopenmetaobject_p.h
@@ -95,7 +95,7 @@ class QQmlOpenMetaObjectPrivate;
 class Q_QML_PRIVATE_EXPORT QQmlOpenMetaObject : public QAbstractDynamicMetaObject
 {
 public:
-    QQmlOpenMetaObject(QObject *, const QMetaObject * = 0, bool = true);
+    QQmlOpenMetaObject(QObject *, const QMetaObject * = nullptr, bool = true);
     QQmlOpenMetaObject(QObject *, QQmlOpenMetaObjectType *, bool = true);
     ~QQmlOpenMetaObject();
 
diff --git a/src/qml/qml/qqmlparserstatus.cpp b/src/qml/qml/qqmlparserstatus.cpp
index ad07cac7ef..1082c318cb 100644
--- a/src/qml/qml/qqmlparserstatus.cpp
+++ b/src/qml/qml/qqmlparserstatus.cpp
@@ -87,7 +87,7 @@ QT_BEGIN_NAMESPACE
 
 /*! \internal */
 QQmlParserStatus::QQmlParserStatus()
-: d(0)
+: d(nullptr)
 {
 }
 
@@ -95,7 +95,7 @@ QQmlParserStatus::QQmlParserStatus()
 QQmlParserStatus::~QQmlParserStatus()
 {
     if(d)
-        (*d) = 0;
+        (*d) = nullptr;
 }
 
 /*!
diff --git a/src/qml/qml/qqmlplatform_p.h b/src/qml/qml/qqmlplatform_p.h
index 6246ca7105..af33dffca3 100644
--- a/src/qml/qml/qqmlplatform_p.h
+++ b/src/qml/qml/qqmlplatform_p.h
@@ -64,7 +64,7 @@ class Q_QML_PRIVATE_EXPORT QQmlPlatform : public QObject
     Q_PROPERTY(QString pluginName READ pluginName CONSTANT)
 
 public:
-    explicit QQmlPlatform(QObject *parent = 0);
+    explicit QQmlPlatform(QObject *parent = nullptr);
     virtual ~QQmlPlatform();
 
     static QString os();
diff --git a/src/qml/qml/qqmlprivate.h b/src/qml/qml/qqmlprivate.h
index b9e9d5e59e..11adea6fc9 100644
--- a/src/qml/qml/qqmlprivate.h
+++ b/src/qml/qml/qqmlprivate.h
@@ -167,8 +167,8 @@ namespace QQmlPrivate
     class AttachedPropertySelector
     {
     public:
-        static inline QQmlAttachedPropertiesFunc func() { return 0; }
-        static inline const QMetaObject *metaObject() { return 0; }
+        static inline QQmlAttachedPropertiesFunc func() { return nullptr; }
+        static inline const QMetaObject *metaObject() { return nullptr; }
     };
     template<typename T>
     class AttachedPropertySelector<T, 1>
diff --git a/src/qml/qml/qqmlproperty.cpp b/src/qml/qml/qqmlproperty.cpp
index 50d9f13049..8ecd597a39 100644
--- a/src/qml/qml/qqmlproperty.cpp
+++ b/src/qml/qml/qqmlproperty.cpp
@@ -119,7 +119,7 @@ The \l {Qt Quick 1} version of this class was named QDeclarativeProperty.
     Create an invalid QQmlProperty.
 */
 QQmlProperty::QQmlProperty()
-: d(0)
+: d(nullptr)
 {
 }
 
@@ -128,7 +128,7 @@ QQmlProperty::~QQmlProperty()
 {
     if (d)
         d->release();
-    d = 0;
+    d = nullptr;
 }
 
 /*!
@@ -150,8 +150,8 @@ QQmlProperty::QQmlProperty(QObject *obj)
 QQmlProperty::QQmlProperty(QObject *obj, QQmlContext *ctxt)
 : d(new QQmlPropertyPrivate)
 {
-    d->context = ctxt?QQmlContextData::get(ctxt):0;
-    d->engine = ctxt?ctxt->engine():0;
+    d->context = ctxt?QQmlContextData::get(ctxt):nullptr;
+    d->engine = ctxt?ctxt->engine():nullptr;
     d->initDefault(obj);
 }
 
@@ -164,7 +164,7 @@ QQmlProperty::QQmlProperty(QObject *obj, QQmlContext *ctxt)
 QQmlProperty::QQmlProperty(QObject *obj, QQmlEngine *engine)
   : d(new QQmlPropertyPrivate)
 {
-    d->context = 0;
+    d->context = nullptr;
     d->engine = engine;
     d->initDefault(obj);
 }
@@ -190,7 +190,7 @@ QQmlProperty::QQmlProperty(QObject *obj, const QString &name)
 : d(new QQmlPropertyPrivate)
 {
     d->initProperty(obj, name);
-    if (!isValid()) d->object = 0;
+    if (!isValid()) d->object = nullptr;
 }
 
 /*!
@@ -203,10 +203,10 @@ QQmlProperty::QQmlProperty(QObject *obj, const QString &name)
 QQmlProperty::QQmlProperty(QObject *obj, const QString &name, QQmlContext *ctxt)
 : d(new QQmlPropertyPrivate)
 {
-    d->context = ctxt?QQmlContextData::get(ctxt):0;
-    d->engine = ctxt?ctxt->engine():0;
+    d->context = ctxt?QQmlContextData::get(ctxt):nullptr;
+    d->engine = ctxt?ctxt->engine():nullptr;
     d->initProperty(obj, name);
-    if (!isValid()) { d->object = 0; d->context = 0; d->engine = 0; }
+    if (!isValid()) { d->object = nullptr; d->context = nullptr; d->engine = nullptr; }
 }
 
 /*!
@@ -217,10 +217,10 @@ QQmlProperty::QQmlProperty(QObject *obj, const QString &name, QQmlContext *ctxt)
 QQmlProperty::QQmlProperty(QObject *obj, const QString &name, QQmlEngine *engine)
 : d(new QQmlPropertyPrivate)
 {
-    d->context = 0;
+    d->context = nullptr;
     d->engine = engine;
     d->initProperty(obj, name);
-    if (!isValid()) { d->object = 0; d->context = 0; d->engine = 0; }
+    if (!isValid()) { d->object = nullptr; d->context = nullptr; d->engine = nullptr; }
 }
 
 QQmlProperty QQmlPropertyPrivate::create(QObject *target, const QString &propertyName, QQmlContextData *context)
@@ -240,7 +240,7 @@ QQmlProperty QQmlPropertyPrivate::create(QObject *target, const QString &propert
 }
 
 QQmlPropertyPrivate::QQmlPropertyPrivate()
-: context(0), engine(0), object(0), isNameCached(false)
+: context(nullptr), engine(nullptr), object(nullptr), isNameCached(false)
 {
 }
 
@@ -248,14 +248,14 @@ QQmlContextData *QQmlPropertyPrivate::effectiveContext() const
 {
     if (context) return context;
     else if (engine) return QQmlContextData::get(engine->rootContext());
-    else return 0;
+    else return nullptr;
 }
 
 void QQmlPropertyPrivate::initProperty(QObject *obj, const QString &name)
 {
     if (!obj) return;
 
-    QQmlTypeNameCache *typeNameCache = context?context->imports:0;
+    QQmlTypeNameCache *typeNameCache = context?context->imports:nullptr;
 
     QObject *currentObject = obj;
     QVector<QStringRef> path;
@@ -487,7 +487,7 @@ QQmlPropertyPrivate::propertyTypeCategory() const
 const char *QQmlProperty::propertyTypeName() const
 {
     if (!d)
-        return 0;
+        return nullptr;
     if (d->isValueType()) {
         const QMetaObject *valueTypeMetaObject = QQmlValueTypeFactory::metaObjectForMetaType(d->core.propType());
         Q_ASSERT(valueTypeMetaObject);
@@ -495,7 +495,7 @@ const char *QQmlProperty::propertyTypeName() const
     } else if (d->object && type() & Property && d->core.isValid()) {
         return d->object->metaObject()->property(d->core.coreIndex()).typeName();
     } else {
-        return 0;
+        return nullptr;
     }
 }
 
@@ -579,7 +579,7 @@ bool QQmlProperty::isSignalProperty() const
 */
 QObject *QQmlProperty::object() const
 {
-    return d ? d->object : 0;
+    return d ? d->object : nullptr;
 }
 
 /*!
@@ -717,7 +717,7 @@ QQmlAbstractBinding *
 QQmlPropertyPrivate::binding(const QQmlProperty &that)
 {
     if (!that.d || !that.isProperty() || !that.d->object)
-        return 0;
+        return nullptr;
 
     QQmlPropertyIndex thatIndex(that.d->core.coreIndex(), that.d->valueTypeData.coreIndex());
     return binding(that.d->object, thatIndex);
@@ -779,7 +779,7 @@ static void removeOldBinding(QObject *object, QQmlPropertyIndex index, QQmlPrope
         return;
 
     if (!(flags & QQmlPropertyPrivate::DontEnable))
-        oldBinding->setEnabled(false, 0);
+        oldBinding->setEnabled(false, nullptr);
     oldBinding->removeFromObject();
 }
 
@@ -813,13 +813,13 @@ QQmlPropertyPrivate::binding(QObject *object, QQmlPropertyIndex index)
 
     QQmlData *data = QQmlData::get(object);
     if (!data)
-        return 0;
+        return nullptr;
 
     const int coreIndex = index.coreIndex();
     const int valueTypeIndex = index.valueTypeIndex();
 
     if (coreIndex < 0 || !data->hasBindingBit(coreIndex))
-        return 0;
+        return nullptr;
 
     QQmlAbstractBinding *binding = data->bindings;
     while (binding && (binding->targetPropertyIndex().coreIndex() != coreIndex ||
@@ -845,11 +845,11 @@ void QQmlPropertyPrivate::findAliasTarget(QObject *object, QQmlPropertyIndex bin
         int valueTypeIndex = bindingIndex.valueTypeIndex();
 
         QQmlPropertyData *propertyData =
-            data->propertyCache?data->propertyCache->property(coreIndex):0;
+            data->propertyCache?data->propertyCache->property(coreIndex):nullptr;
         if (propertyData && propertyData->isAlias()) {
             QQmlVMEMetaObject *vme = QQmlVMEMetaObject::getForProperty(object, coreIndex);
 
-            QObject *aObject = 0; int aCoreIndex = -1; int aValueTypeIndex = -1;
+            QObject *aObject = nullptr; int aCoreIndex = -1; int aValueTypeIndex = -1;
             if (vme->aliasTarget(coreIndex, &aObject, &aCoreIndex, &aValueTypeIndex)) {
                 // This will either be a value type sub-reference or an alias to a value-type sub-reference not both
                 Q_ASSERT(valueTypeIndex == -1 || aValueTypeIndex == -1);
@@ -904,11 +904,11 @@ QQmlBoundSignalExpression *
 QQmlPropertyPrivate::signalExpression(const QQmlProperty &that)
 {
     if (!(that.type() & QQmlProperty::SignalProperty))
-        return 0;
+        return nullptr;
 
     QQmlData *data = QQmlData::get(that.d->object);
     if (!data)
-        return 0;
+        return nullptr;
 
     QQmlBoundSignal *signalHandler = data->signalHandlers;
 
@@ -918,7 +918,7 @@ QQmlPropertyPrivate::signalExpression(const QQmlProperty &that)
     if (signalHandler)
         return signalHandler->expression();
 
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -945,7 +945,7 @@ void QQmlPropertyPrivate::takeSignalExpression(const QQmlProperty &that,
         return;
     }
 
-    QQmlData *data = QQmlData::get(that.d->object, 0 != expr);
+    QQmlData *data = QQmlData::get(that.d->object, nullptr != expr);
     if (!data)
         return;
 
@@ -1052,7 +1052,7 @@ QVariant QQmlPropertyPrivate::readValueProperty()
 
     } else if (core.isQObject()) {
 
-        QObject *rv = 0;
+        QObject *rv = nullptr;
         core.readProperty(object, &rv);
         return QVariant::fromValue(rv);
 
@@ -1063,11 +1063,11 @@ QVariant QQmlPropertyPrivate::readValueProperty()
 
         QVariant value;
         int status = -1;
-        void *args[] = { 0, &value, &status };
+        void *args[] = { nullptr, &value, &status };
         if (core.propType() == QMetaType::QVariant) {
             args[0] = &value;
         } else {
-            value = QVariant(core.propType(), (void*)0);
+            value = QVariant(core.propType(), (void*)nullptr);
             args[0] = value.data();
         }
         core.readPropertyWithArgs(object, args);
@@ -1426,7 +1426,7 @@ QQmlMetaObject QQmlPropertyPrivate::rawMetaObjectForType(QQmlEnginePrivate *engi
  */
 bool QQmlProperty::write(const QVariant &value) const
 {
-    return QQmlPropertyPrivate::write(*this, value, 0);
+    return QQmlPropertyPrivate::write(*this, value, nullptr);
 }
 
 /*!
@@ -1495,7 +1495,7 @@ bool QQmlProperty::write(QObject *object, const QString &name, const QVariant &v
 bool QQmlProperty::reset() const
 {
     if (isResettable()) {
-        void *args[] = { 0 };
+        void *args[] = { nullptr };
         QMetaObject::metacall(d->object, QMetaObject::ResetProperty, d->core.coreIndex(), args);
         return true;
     } else {
diff --git a/src/qml/qml/qqmlproperty_p.h b/src/qml/qml/qqmlproperty_p.h
index 7a66d8113c..544eab4c7f 100644
--- a/src/qml/qml/qqmlproperty_p.h
+++ b/src/qml/qml/qqmlproperty_p.h
@@ -104,9 +104,9 @@ public:
     static bool writeValueProperty(QObject *,
                                    const QQmlPropertyData &, const QQmlPropertyData &valueTypeData,
                                    const QVariant &, QQmlContextData *,
-                                   QQmlPropertyData::WriteFlags flags = 0);
+                                   QQmlPropertyData::WriteFlags flags = nullptr);
     static bool write(QObject *, const QQmlPropertyData &, const QVariant &,
-                      QQmlContextData *, QQmlPropertyData::WriteFlags flags = 0);
+                      QQmlContextData *, QQmlPropertyData::WriteFlags flags = nullptr);
     static void findAliasTarget(QObject *, QQmlPropertyIndex, QObject **, QQmlPropertyIndex *);
 
     enum BindingFlag {
@@ -140,7 +140,7 @@ public:
     static QMetaMethod findSignalByName(const QMetaObject *mo, const QByteArray &);
     static bool connect(const QObject *sender, int signal_index,
                         const QObject *receiver, int method_index,
-                        int type = 0, int *types = 0);
+                        int type = 0, int *types = nullptr);
     static void flushSignal(const QObject *sender, int signal_index);
 
     static QVariant resolvedUrlSequence(const QVariant &value, QQmlContextData *context);
diff --git a/src/qml/qml/qqmlpropertycache.cpp b/src/qml/qml/qqmlpropertycache.cpp
index bce81c1504..88eda9c020 100644
--- a/src/qml/qml/qqmlpropertycache.cpp
+++ b/src/qml/qml/qqmlpropertycache.cpp
@@ -243,9 +243,9 @@ void QQmlPropertyData::lazyLoad(const QMetaMethod &m)
 Creates a new empty QQmlPropertyCache.
 */
 QQmlPropertyCache::QQmlPropertyCache()
-    : _parent(0), propertyIndexCacheStart(0), methodIndexCacheStart(0),
+    : _parent(nullptr), propertyIndexCacheStart(0), methodIndexCacheStart(0),
       signalHandlerIndexCacheStart(0), _hasPropertyOverrides(false), _ownMetaObject(false),
-      _metaObject(0), argumentsCache(0), _jsFactoryMethodIndex(-1)
+      _metaObject(nullptr), argumentsCache(nullptr), _jsFactoryMethodIndex(-1)
 {
 }
 
@@ -277,8 +277,8 @@ QQmlPropertyCache::~QQmlPropertyCache()
     if (_parent) _parent->release();
 
     if (_ownMetaObject) free(const_cast<QMetaObject *>(_metaObject));
-    _metaObject = 0;
-    _parent = 0;
+    _metaObject = nullptr;
+    _parent = nullptr;
 }
 
 QQmlPropertyCache *QQmlPropertyCache::copy(int reserve)
@@ -310,7 +310,7 @@ QQmlPropertyCache *QQmlPropertyCache::copyAndReserve(int propertyCount, int meth
     rv->methodIndexCache.reserve(methodCount);
     rv->signalHandlerIndexCache.reserve(signalCount);
     rv->enumCache.reserve(enumCount);
-    rv->_metaObject = 0;
+    rv->_metaObject = nullptr;
 
     return rv;
 }
@@ -337,7 +337,7 @@ void QQmlPropertyCache::appendProperty(const QString &name, QQmlPropertyData::Fl
     int index = propertyIndexCache.count();
     propertyIndexCache.append(data);
 
-    setNamedProperty(name, index + propertyOffset(), propertyIndexCache.data() + index, (old != 0));
+    setNamedProperty(name, index + propertyOffset(), propertyIndexCache.data() + index, (old != nullptr));
 }
 
 void QQmlPropertyCache::appendSignal(const QString &name, QQmlPropertyData::Flags flags,
@@ -374,8 +374,8 @@ void QQmlPropertyCache::appendSignal(const QString &name, QQmlPropertyData::Flag
     QString handlerName = QLatin1String("on") + name;
     handlerName[2] = handlerName.at(2).toUpper();
 
-    setNamedProperty(name, methodIndex + methodOffset(), methodIndexCache.data() + methodIndex, (old != 0));
-    setNamedProperty(handlerName, signalHandlerIndex + signalOffset(), signalHandlerIndexCache.data() + signalHandlerIndex, (old != 0));
+    setNamedProperty(name, methodIndex + methodOffset(), methodIndexCache.data() + methodIndex, (old != nullptr));
+    setNamedProperty(handlerName, signalHandlerIndex + signalOffset(), signalHandlerIndexCache.data() + signalHandlerIndex, (old != nullptr));
 }
 
 void QQmlPropertyCache::appendMethod(const QString &name, QQmlPropertyData::Flags flags,
@@ -402,7 +402,7 @@ void QQmlPropertyCache::appendMethod(const QString &name, QQmlPropertyData::Flag
     int methodIndex = methodIndexCache.count();
     methodIndexCache.append(data);
 
-    setNamedProperty(name, methodIndex + methodOffset(), methodIndexCache.data() + methodIndex, (old != 0));
+    setNamedProperty(name, methodIndex + methodOffset(), methodIndexCache.data() + methodIndex, (old != nullptr));
 }
 
 void QQmlPropertyCache::appendEnum(const QString &name, const QVector<QQmlEnumValue> &values)
@@ -430,7 +430,7 @@ const QMetaObject *QQmlPropertyCache::createMetaObject()
 
 QQmlPropertyData *QQmlPropertyCache::defaultProperty() const
 {
-    return property(defaultPropertyName(), 0, 0);
+    return property(defaultPropertyName(), nullptr, nullptr);
 }
 
 void QQmlPropertyCache::setParent(QQmlPropertyCache *newParent)
@@ -543,7 +543,7 @@ void QQmlPropertyCache::append(const QMetaObject *metaObject,
         }
 
         QQmlPropertyData *data = &methodIndexCache[ii - methodIndexCacheStart];
-        QQmlPropertyData *sigdata = 0;
+        QQmlPropertyData *sigdata = nullptr;
 
         if (m.methodType() == QMetaMethod::Signal)
             data->setFlags(signalFlags);
@@ -562,24 +562,24 @@ void QQmlPropertyCache::append(const QMetaObject *metaObject,
             sigdata->_flags.isSignalHandler = true;
         }
 
-        QQmlPropertyData *old = 0;
+        QQmlPropertyData *old = nullptr;
 
         if (utf8) {
             QHashedString methodName(QString::fromUtf8(rawName, cptr - rawName));
             if (StringCache::mapped_type *it = stringCache.value(methodName))
                 old = it->second;
-            setNamedProperty(methodName, ii, data, (old != 0));
+            setNamedProperty(methodName, ii, data, (old != nullptr));
 
             if (data->isSignal()) {
                 QHashedString on(QLatin1String("on") % methodName.at(0).toUpper() % methodName.midRef(1));
-                setNamedProperty(on, ii, sigdata, (old != 0));
+                setNamedProperty(on, ii, sigdata, (old != nullptr));
                 ++signalHandlerIndex;
             }
         } else {
             QHashedCStringRef methodName(rawName, cptr - rawName);
             if (StringCache::mapped_type *it = stringCache.value(methodName))
                 old = it->second;
-            setNamedProperty(methodName, ii, data, (old != 0));
+            setNamedProperty(methodName, ii, data, (old != nullptr));
 
             if (data->isSignal()) {
                 int length = methodName.length();
@@ -593,7 +593,7 @@ void QQmlPropertyCache::append(const QMetaObject *metaObject,
                 str[length + 2] = '\0';
 
                 QHashedString on(QString::fromLatin1(str.data()));
-                setNamedProperty(on, ii, data, (old != 0));
+                setNamedProperty(on, ii, data, (old != nullptr));
                 ++signalHandlerIndex;
             }
         }
@@ -636,18 +636,18 @@ void QQmlPropertyCache::append(const QMetaObject *metaObject,
         Q_ASSERT((allowedRevisionCache.count() - 1) < Q_INT16_MAX);
         data->setMetaObjectOffset(allowedRevisionCache.count() - 1);
 
-        QQmlPropertyData *old = 0;
+        QQmlPropertyData *old = nullptr;
 
         if (utf8) {
             QHashedString propName(QString::fromUtf8(str, cptr - str));
             if (StringCache::mapped_type *it = stringCache.value(propName))
                 old = it->second;
-            setNamedProperty(propName, ii, data, (old != 0));
+            setNamedProperty(propName, ii, data, (old != nullptr));
         } else {
             QHashedCStringRef propName(str, cptr - str);
             if (StringCache::mapped_type *it = stringCache.value(propName))
                 old = it->second;
-            setNamedProperty(propName, ii, data, (old != 0));
+            setNamedProperty(propName, ii, data, (old != nullptr));
         }
 
         bool isGadget = true;
@@ -750,7 +750,7 @@ void QQmlPropertyCache::invalidate(const QMetaObject *metaObject)
     signalHandlerIndexCache.clear();
 
     _hasPropertyOverrides = false;
-    argumentsCache = 0;
+    argumentsCache = nullptr;
 
     int pc = metaObject->propertyCount();
     int mc = metaObject->methodCount();
@@ -773,8 +773,8 @@ void QQmlPropertyCache::invalidate(const QMetaObject *metaObject)
 
 QQmlPropertyData *QQmlPropertyCache::findProperty(StringCache::ConstIterator it, QObject *object, QQmlContextData *context) const
 {
-    QQmlData *data = (object ? QQmlData::get(object) : 0);
-    const QQmlVMEMetaObject *vmemo = 0;
+    QQmlData *data = (object ? QQmlData::get(object) : nullptr);
+    const QQmlVMEMetaObject *vmemo = nullptr;
     if (data && data->hasVMEMetaObject) {
         QObjectPrivate *op = QObjectPrivate::get(object);
         vmemo = static_cast<const QQmlVMEMetaObject *>(op->metaObject);
@@ -849,7 +849,7 @@ QQmlPropertyData *QQmlPropertyCache::findProperty(StringCache::ConstIterator it,
         return ensureResolved(result);
     }
 
-    return 0;
+    return nullptr;
 }
 
 QString QQmlPropertyData::name(QObject *object) const
@@ -919,9 +919,9 @@ QQmlPropertyCacheMethodArguments *QQmlPropertyCache::createArgumentsObject(int a
     A *args = static_cast<A *>(malloc(sizeof(A) + (argc) * sizeof(int)));
     args->arguments[0] = argc;
     args->argumentsValid = false;
-    args->signalParameterStringForJS = 0;
+    args->signalParameterStringForJS = nullptr;
     args->parameterError = false;
-    args->names = argc ? new QList<QByteArray>(names) : 0;
+    args->names = argc ? new QList<QByteArray>(names) : nullptr;
     args->next = argumentsCache;
     argumentsCache = args;
     return args;
@@ -1027,10 +1027,10 @@ static QQmlPropertyData qQmlPropertyCacheCreate(const QMetaObject *metaObject, c
                     }
                     /* If the "cmo" variable didn't change, set it to 0 to
                      * avoid running into an infinite loop */
-                    if (!changed) cmo = 0;
+                    if (!changed) cmo = nullptr;
                 }
             } else {
-                cmo = 0;
+                cmo = nullptr;
             }
         }
     }
@@ -1057,7 +1057,7 @@ QQmlPropertyData *
 qQmlPropertyCacheProperty(QJSEngine *engine, QObject *obj, T name,
                           QQmlContextData *context, QQmlPropertyData &local)
 {
-    QQmlPropertyCache *cache = 0;
+    QQmlPropertyCache *cache = nullptr;
 
     QQmlData *ddata = QQmlData::get(obj, false);
 
@@ -1073,7 +1073,7 @@ qQmlPropertyCacheProperty(QJSEngine *engine, QObject *obj, T name,
         }
     }
 
-    QQmlPropertyData *rv = 0;
+    QQmlPropertyData *rv = nullptr;
 
     if (cache) {
         rv = cache->property(name, obj, context);
@@ -1214,7 +1214,7 @@ void QQmlPropertyCache::toMetaObjectBuilder(QMetaObjectBuilder &builder)
         // '+=' reserves extra capacity. Follow-up appending will be probably free.
         signature += methods.at(ii).first.toUtf8() + '(';
 
-        QQmlPropertyCacheMethodArguments *arguments = 0;
+        QQmlPropertyCacheMethodArguments *arguments = nullptr;
         if (data->hasArguments()) {
             arguments = (QQmlPropertyCacheMethodArguments *)data->arguments();
             Q_ASSERT(arguments->argumentsValid);
@@ -1252,7 +1252,7 @@ void QQmlPropertyCache::toMetaObjectBuilder(QMetaObjectBuilder &builder)
     }
 
     if (!_defaultPropertyName.isEmpty()) {
-        QQmlPropertyData *dp = property(_defaultPropertyName, 0, 0);
+        QQmlPropertyData *dp = property(_defaultPropertyName, nullptr, nullptr);
         if (dp && dp->coreIndex() >= propertyIndexCacheStart) {
             Q_ASSERT(!dp->isFunction());
             builder.addClassInfo("DefaultProperty", _defaultPropertyName.toUtf8());
@@ -1577,7 +1577,7 @@ void QQmlMetaObject::resolveGadgetMethodOrPropertyIndex(QMetaObject::Call type,
 
 QQmlPropertyCache *QQmlMetaObject::propertyCache(QQmlEnginePrivate *e) const
 {
-    if (_m.isNull()) return 0;
+    if (_m.isNull()) return nullptr;
     if (_m.isT1()) return _m.asT1();
     else return e->cache(_m.asT2());
 }
@@ -1588,7 +1588,7 @@ int QQmlMetaObject::methodReturnType(const QQmlPropertyData &data, QByteArray *u
 
     int type = data.propType();
 
-    const char *propTypeName = 0;
+    const char *propTypeName = nullptr;
 
     if (type == QMetaType::UnknownType) {
         // Find the return type name from the method info
@@ -1676,7 +1676,7 @@ int *QQmlMetaObject::methodParameterTypes(int index, ArgTypeStorage *argStorage,
             }
             if (type == QMetaType::UnknownType) {
                 if (unknownTypeError) *unknownTypeError = argTypeNames.at(ii);
-                return 0;
+                return nullptr;
             }
             args->arguments[ii + 1] = type;
         }
@@ -1715,7 +1715,7 @@ int *QQmlMetaObject::methodParameterTypes(const QMetaMethod &m, ArgTypeStorage *
         }
         if (type == QMetaType::UnknownType) {
             if (unknownTypeError) *unknownTypeError = argTypeNames.at(ii);
-            return 0;
+            return nullptr;
         }
         argStorage->operator[](ii + 1) = type;
     }
@@ -1727,7 +1727,7 @@ void QQmlObjectOrGadget::metacall(QMetaObject::Call type, int index, void **argv
 {
     if (ptr.isNull()) {
         const QMetaObject *metaObject = _m.asT2();
-        metaObject->d.static_metacall(0, type, index, argv);
+        metaObject->d.static_metacall(nullptr, type, index, argv);
     }
     else if (ptr.isT1()) {
         QMetaObject::metacall(ptr.asT1(), type, index, argv);
diff --git a/src/qml/qml/qqmlpropertycache_p.h b/src/qml/qml/qqmlpropertycache_p.h
index 11b7c04c52..22be6ba60c 100644
--- a/src/qml/qml/qqmlpropertycache_p.h
+++ b/src/qml/qml/qqmlpropertycache_p.h
@@ -323,7 +323,7 @@ public:
 
     inline void readProperty(QObject *target, void *property) const
     {
-        void *args[] = { property, 0 };
+        void *args[] = { property, nullptr };
         readPropertyWithArgs(target, args);
     }
 
@@ -340,7 +340,7 @@ public:
     bool writeProperty(QObject *target, void *value, WriteFlags flags) const
     {
         int status = -1;
-        void *argv[] = { value, 0, &status, &flags };
+        void *argv[] = { value, nullptr, &status, &flags };
         if (flags.testFlag(BypassInterceptor) && hasStaticMetaCallFunction())
             staticMetaCallFunction()(target, QMetaObject::WriteProperty, relativePropertyIndex(), argv);
         else if (flags.testFlag(BypassInterceptor) && isDirect())
@@ -417,7 +417,7 @@ public:
     void appendProperty(const QString &, QQmlPropertyRawData::Flags flags, int coreIndex,
                         int propType, int revision, int notifyIndex);
     void appendSignal(const QString &, QQmlPropertyRawData::Flags, int coreIndex,
-                      const int *types = 0, const QList<QByteArray> &names = QList<QByteArray>());
+                      const int *types = nullptr, const QList<QByteArray> &names = QList<QByteArray>());
     void appendMethod(const QString &, QQmlPropertyData::Flags flags, int coreIndex,
                       const QList<QByteArray> &names = QList<QByteArray>());
     void appendEnum(const QString &, const QVector<QQmlEnumValue> &);
@@ -465,7 +465,7 @@ public:
     static int originalClone(QObject *, int index);
 
     QList<QByteArray> signalParameterNames(int index) const;
-    static QString signalParameterStringForJS(QV4::ExecutionEngine *engine, const QList<QByteArray> &parameterNameList, QString *errorString = 0);
+    static QString signalParameterStringForJS(QV4::ExecutionEngine *engine, const QList<QByteArray> &parameterNameList, QString *errorString = nullptr);
 
     const char *className() const;
 
@@ -739,7 +739,7 @@ inline const QMetaObject *QQmlPropertyCache::metaObject() const
 // QML
 inline const QMetaObject *QQmlPropertyCache::firstCppMetaObject() const
 {
-    while (_parent && (_metaObject == 0 || _ownMetaObject))
+    while (_parent && (_metaObject == nullptr || _ownMetaObject))
         return _parent->firstCppMetaObject();
     return _metaObject;
 }
@@ -747,7 +747,7 @@ inline const QMetaObject *QQmlPropertyCache::firstCppMetaObject() const
 inline QQmlPropertyData *QQmlPropertyCache::property(int index) const
 {
     if (index < 0 || index >= (propertyIndexCacheStart + propertyIndexCache.count()))
-        return 0;
+        return nullptr;
 
     if (index < propertyIndexCacheStart)
         return _parent->property(index);
@@ -759,7 +759,7 @@ inline QQmlPropertyData *QQmlPropertyCache::property(int index) const
 inline QQmlPropertyData *QQmlPropertyCache::method(int index) const
 {
     if (index < 0 || index >= (methodIndexCacheStart + methodIndexCache.count()))
-        return 0;
+        return nullptr;
 
     if (index < methodIndexCacheStart)
         return _parent->method(index);
@@ -775,7 +775,7 @@ inline QQmlPropertyData *QQmlPropertyCache::method(int index) const
 inline QQmlPropertyData *QQmlPropertyCache::signal(int index) const
 {
     if (index < 0 || index >= (signalHandlerIndexCacheStart + signalHandlerIndexCache.count()))
-        return 0;
+        return nullptr;
 
     if (index < signalHandlerIndexCacheStart)
         return _parent->signal(index);
@@ -788,7 +788,7 @@ inline QQmlPropertyData *QQmlPropertyCache::signal(int index) const
 inline QQmlEnumData *QQmlPropertyCache::qmlEnum(int index) const
 {
     if (index < 0 || index >= enumCache.count())
-        return 0;
+        return nullptr;
 
     return const_cast<QQmlEnumData *>(&enumCache.at(index));
 }
@@ -819,7 +819,7 @@ QQmlPropertyData *
 QQmlPropertyCache::overrideData(QQmlPropertyData *data) const
 {
     if (!data->hasOverride())
-        return 0;
+        return nullptr;
 
     if (data->overrideIndexIsProperty())
         return property(data->overrideIndex());
@@ -921,7 +921,7 @@ bool QQmlMetaObject::isNull() const
 const char *QQmlMetaObject::className() const
 {
     if (_m.isNull()) {
-        return 0;
+        return nullptr;
     } else if (_m.isT1()) {
         return _m.asT1()->className();
     } else {
@@ -947,7 +947,7 @@ bool QQmlMetaObject::hasMetaObject() const
 
 const QMetaObject *QQmlMetaObject::metaObject() const
 {
-    if (_m.isNull()) return 0;
+    if (_m.isNull()) return nullptr;
     if (_m.isT1()) return _m.asT1()->createMetaObject();
     else return _m.asT2();
 }
diff --git a/src/qml/qml/qqmlpropertyvalueinterceptor.cpp b/src/qml/qml/qqmlpropertyvalueinterceptor.cpp
index 52c003ab59..603245f29d 100644
--- a/src/qml/qml/qqmlpropertyvalueinterceptor.cpp
+++ b/src/qml/qml/qqmlpropertyvalueinterceptor.cpp
@@ -55,7 +55,7 @@ QT_BEGIN_NAMESPACE
 /*!
     Constructs a QQmlPropertyValueInterceptor.
 */
-QQmlPropertyValueInterceptor::QQmlPropertyValueInterceptor() : m_next(0)
+QQmlPropertyValueInterceptor::QQmlPropertyValueInterceptor() : m_next(nullptr)
 {
 }
 
diff --git a/src/qml/qml/qqmlproxymetaobject.cpp b/src/qml/qml/qqmlproxymetaobject.cpp
index 27e3c13ff8..e1500f70fb 100644
--- a/src/qml/qml/qqmlproxymetaobject.cpp
+++ b/src/qml/qml/qqmlproxymetaobject.cpp
@@ -43,7 +43,7 @@
 QT_BEGIN_NAMESPACE
 
 QQmlProxyMetaObject::QQmlProxyMetaObject(QObject *obj, QList<ProxyData> *mList)
-: metaObjects(mList), proxies(0), parent(0), object(obj)
+: metaObjects(mList), proxies(nullptr), parent(nullptr), object(obj)
 {
     *static_cast<QMetaObject *>(this) = *metaObjects->constFirst().metaObject;
 
@@ -58,11 +58,11 @@ QQmlProxyMetaObject::~QQmlProxyMetaObject()
 {
     if (parent)
         delete parent;
-    parent = 0;
+    parent = nullptr;
 
     if (proxies)
         delete [] proxies;
-    proxies = 0;
+    proxies = nullptr;
 }
 
 int QQmlProxyMetaObject::metaCall(QObject *o, QMetaObject::Call c, int id, void **a)
diff --git a/src/qml/qml/qqmlscriptstring_p.h b/src/qml/qml/qqmlscriptstring_p.h
index 2dfb817186..fd8ccd5d53 100644
--- a/src/qml/qml/qqmlscriptstring_p.h
+++ b/src/qml/qml/qqmlscriptstring_p.h
@@ -59,7 +59,7 @@ QT_BEGIN_NAMESPACE
 class Q_AUTOTEST_EXPORT QQmlScriptStringPrivate : public QSharedData
 {
 public:
-    QQmlScriptStringPrivate() : context(0), scope(0), bindingId(-1), lineNumber(0), columnNumber(0),
+    QQmlScriptStringPrivate() : context(nullptr), scope(nullptr), bindingId(-1), lineNumber(0), columnNumber(0),
         numberValue(0), isStringLiteral(false), isNumberLiteral(false) {}
 
     //for testing
diff --git a/src/qml/qml/qqmlstringconverters_p.h b/src/qml/qml/qqmlstringconverters_p.h
index af344e3344..215f0c0aaf 100644
--- a/src/qml/qml/qqmlstringconverters_p.h
+++ b/src/qml/qml/qqmlstringconverters_p.h
@@ -67,19 +67,19 @@ class QByteArray;
 namespace QQmlStringConverters
 {
     Q_QML_PRIVATE_EXPORT QVariant variantFromString(const QString &);
-    Q_QML_PRIVATE_EXPORT QVariant variantFromString(const QString &, int preferredType, bool *ok = 0);
+    Q_QML_PRIVATE_EXPORT QVariant variantFromString(const QString &, int preferredType, bool *ok = nullptr);
 
-    Q_QML_PRIVATE_EXPORT QVariant colorFromString(const QString &, bool *ok = 0);
-    Q_QML_PRIVATE_EXPORT unsigned rgbaFromString(const QString &, bool *ok = 0);
+    Q_QML_PRIVATE_EXPORT QVariant colorFromString(const QString &, bool *ok = nullptr);
+    Q_QML_PRIVATE_EXPORT unsigned rgbaFromString(const QString &, bool *ok = nullptr);
 
 #if QT_CONFIG(datestring)
-    Q_QML_PRIVATE_EXPORT QDate dateFromString(const QString &, bool *ok = 0);
-    Q_QML_PRIVATE_EXPORT QTime timeFromString(const QString &, bool *ok = 0);
-    Q_QML_PRIVATE_EXPORT QDateTime dateTimeFromString(const QString &, bool *ok = 0);
+    Q_QML_PRIVATE_EXPORT QDate dateFromString(const QString &, bool *ok = nullptr);
+    Q_QML_PRIVATE_EXPORT QTime timeFromString(const QString &, bool *ok = nullptr);
+    Q_QML_PRIVATE_EXPORT QDateTime dateTimeFromString(const QString &, bool *ok = nullptr);
 #endif
-    Q_QML_PRIVATE_EXPORT QPointF pointFFromString(const QString &, bool *ok = 0);
-    Q_QML_PRIVATE_EXPORT QSizeF sizeFFromString(const QString &, bool *ok = 0);
-    Q_QML_PRIVATE_EXPORT QRectF rectFFromString(const QString &, bool *ok = 0);
+    Q_QML_PRIVATE_EXPORT QPointF pointFFromString(const QString &, bool *ok = nullptr);
+    Q_QML_PRIVATE_EXPORT QSizeF sizeFFromString(const QString &, bool *ok = nullptr);
+    Q_QML_PRIVATE_EXPORT QRectF rectFFromString(const QString &, bool *ok = nullptr);
 
     Q_QML_PRIVATE_EXPORT bool createFromString(int, const QString &, void *, size_t);
 }
diff --git a/src/qml/qml/qqmltypeloader.cpp b/src/qml/qml/qqmltypeloader.cpp
index e5682df761..ed1526c0a9 100644
--- a/src/qml/qml/qqmltypeloader.cpp
+++ b/src/qml/qml/qqmltypeloader.cpp
@@ -550,7 +550,7 @@ void QQmlDataBlob::networkError(QNetworkReply::NetworkError networkError)
     QQmlError error;
     error.setUrl(m_url);
 
-    const char *errorString = 0;
+    const char *errorString = nullptr;
     switch (networkError) {
         default:
             errorString = "Network error";
@@ -791,7 +791,7 @@ void QQmlDataBlob::ThreadData::setProgress(quint8 v)
 QQmlTypeLoaderThread::QQmlTypeLoaderThread(QQmlTypeLoader *loader)
 : m_loader(loader)
 #if QT_CONFIG(qml_network)
-, m_networkAccessManager(0), m_networkReplyProxy(0)
+, m_networkAccessManager(nullptr), m_networkReplyProxy(nullptr)
 #endif // qml_network
 {
     // Do that after initializing all the members.
@@ -803,7 +803,7 @@ QNetworkAccessManager *QQmlTypeLoaderThread::networkAccessManager() const
 {
     Q_ASSERT(isThisThread());
     if (!m_networkAccessManager) {
-        m_networkAccessManager = QQmlEnginePrivate::get(m_loader->engine())->createNetworkAccessManager(0);
+        m_networkAccessManager = QQmlEnginePrivate::get(m_loader->engine())->createNetworkAccessManager(nullptr);
         m_networkReplyProxy = new QQmlTypeLoaderNetworkReplyProxy(m_loader);
     }
 
@@ -876,9 +876,9 @@ void QQmlTypeLoaderThread::shutdownThread()
 {
 #if QT_CONFIG(qml_network)
     delete m_networkAccessManager;
-    m_networkAccessManager = 0;
+    m_networkAccessManager = nullptr;
     delete m_networkReplyProxy;
-    m_networkReplyProxy = 0;
+    m_networkReplyProxy = nullptr;
 #endif // qml_network
 }
 
@@ -962,7 +962,7 @@ void QQmlTypeLoader::invalidate()
     if (m_thread) {
         shutdownThread();
         delete m_thread;
-        m_thread = 0;
+        m_thread = nullptr;
     }
 
 #if QT_CONFIG(qml_network)
@@ -1535,7 +1535,7 @@ void QQmlTypeLoader::Blob::dependencyComplete(QQmlDataBlob *blob)
 
 bool QQmlTypeLoader::Blob::isDebugging() const
 {
-    return typeLoader()->engine()->handle()->debugger() != 0;
+    return typeLoader()->engine()->handle()->debugger() != nullptr;
 }
 
 bool QQmlTypeLoader::Blob::qmldirDataAvailable(QQmlQmldirData *data, QList<QQmlError> *errors)
@@ -1543,7 +1543,7 @@ bool QQmlTypeLoader::Blob::qmldirDataAvailable(QQmlQmldirData *data, QList<QQmlE
     bool resolve = true;
 
     const QV4::CompiledData::Import *import = data->import(this);
-    data->setImport(this, 0);
+    data->setImport(this, nullptr);
 
     int priority = data->priority(this);
     data->setPriority(this, 0);
@@ -1818,7 +1818,7 @@ QString QQmlTypeLoader::absoluteFilePath(const QString &path)
 
     if (!m_importDirCache.contains(dirPath)) {
         bool exists = QDir(dirPath).exists();
-        QCache<QString, bool> *entry = exists ? new QCache<QString, bool> : 0;
+        QCache<QString, bool> *entry = exists ? new QCache<QString, bool> : nullptr;
         m_importDirCache.insert(dirPath, entry);
     }
     QCache<QString, bool> *fileSet = m_importDirCache.object(dirPath);
@@ -1881,12 +1881,12 @@ bool QQmlTypeLoader::directoryExists(const QString &path)
 
     if (!m_importDirCache.contains(dirPath)) {
         bool exists = QDir(dirPath).exists();
-        QCache<QString, bool> *files = exists ? new QCache<QString, bool> : 0;
+        QCache<QString, bool> *files = exists ? new QCache<QString, bool> : nullptr;
         m_importDirCache.insert(dirPath, files);
     }
 
     QCache<QString, bool> *fileSet = m_importDirCache.object(dirPath);
-    return fileSet != 0;
+    return fileSet != nullptr;
 }
 
 
@@ -2764,7 +2764,7 @@ bool QQmlTypeData::resolveType(const QString &typeName, int &majorVersion, int &
                                TypeReference &ref, int lineNumber, int columnNumber,
                                bool reportErrors, QQmlType::RegistrationType registrationType)
 {
-    QQmlImportNamespace *typeNamespace = 0;
+    QQmlImportNamespace *typeNamespace = nullptr;
     QList<QQmlError> errors;
 
     bool typeFound = m_importCache.resolveType(typeName, &ref.type, &majorVersion, &minorVersion,
@@ -2824,9 +2824,9 @@ void QQmlTypeData::scriptImported(QQmlScriptBlob *blob, const QV4::CompiledData:
 }
 
 QQmlScriptData::QQmlScriptData()
-    : typeNameCache(0)
+    : typeNameCache(nullptr)
     , m_loaded(false)
-    , m_program(0)
+    , m_program(nullptr)
 {
 }
 
@@ -2843,7 +2843,7 @@ void QQmlScriptData::initialize(QQmlEngine *engine)
 
     QV4::ExecutionEngine *v4 = engine->handle();
 
-    m_program = new QV4::Script(v4, 0, m_precompiledScript);
+    m_program = new QV4::Script(v4, nullptr, m_precompiledScript);
 
     addToEngine(engine);
 
@@ -2864,7 +2864,7 @@ QV4::ReturnedValue QQmlScriptData::scriptValueForContext(QQmlContextData *parent
 
     QQmlContextData *effectiveCtxt = parentCtxt;
     if (shared)
-        effectiveCtxt = 0;
+        effectiveCtxt = nullptr;
 
     // Create the script context if required
     QQmlContextDataRef ctxt(new QQmlContextData);
@@ -2912,7 +2912,7 @@ QV4::ReturnedValue QQmlScriptData::scriptValueForContext(QQmlContextData *parent
         return QV4::Encode::undefined();
     }
 
-    QV4::Scoped<QV4::QmlContext> qmlContext(scope, QV4::QmlContext::create(v4->rootContext(), ctxt, 0));
+    QV4::Scoped<QV4::QmlContext> qmlContext(scope, QV4::QmlContext::create(v4->rootContext(), ctxt, nullptr));
 
     m_program->qmlContext.set(scope.engine, qmlContext);
     m_program->run();
@@ -2936,7 +2936,7 @@ void QQmlScriptData::clear()
 {
     if (typeNameCache) {
         typeNameCache->release();
-        typeNameCache = 0;
+        typeNameCache = nullptr;
     }
 
     for (int ii = 0; ii < scripts.count(); ++ii)
@@ -2948,7 +2948,7 @@ void QQmlScriptData::clear()
 }
 
 QQmlScriptBlob::QQmlScriptBlob(const QUrl &url, QQmlTypeLoader *loader)
-: QQmlTypeLoader::Blob(url, JavaScriptFile, loader), m_scriptData(0)
+: QQmlTypeLoader::Blob(url, JavaScriptFile, loader), m_scriptData(nullptr)
 {
 }
 
@@ -2956,7 +2956,7 @@ QQmlScriptBlob::~QQmlScriptBlob()
 {
     if (m_scriptData) {
         m_scriptData->release();
-        m_scriptData = 0;
+        m_scriptData = nullptr;
     }
 }
 
@@ -3135,7 +3135,7 @@ const QV4::CompiledData::Import *QQmlQmldirData::import(QQmlTypeLoader::Blob *bl
     QHash<QQmlTypeLoader::Blob *, const QV4::CompiledData::Import *>::const_iterator it =
         m_imports.find(blob);
     if (it == m_imports.end())
-        return 0;
+        return nullptr;
     return *it;
 }
 
diff --git a/src/qml/qml/qqmltypeloader_p.h b/src/qml/qml/qqmltypeloader_p.h
index 875c335c9a..f2327e9a5f 100644
--- a/src/qml/qml/qqmltypeloader_p.h
+++ b/src/qml/qml/qqmltypeloader_p.h
@@ -411,7 +411,7 @@ class Q_AUTOTEST_EXPORT QQmlTypeData : public QQmlTypeLoader::Blob
 public:
     struct TypeReference
     {
-        TypeReference() : majorVersion(0), minorVersion(0), typeData(0), needsCreation(true) {}
+        TypeReference() : majorVersion(0), minorVersion(0), typeData(nullptr), needsCreation(true) {}
 
         QV4::CompiledData::Location location;
         QQmlType type;
@@ -425,7 +425,7 @@ public:
 
     struct ScriptReference
     {
-        ScriptReference() : script(0) {}
+        ScriptReference() : script(nullptr) {}
 
         QV4::CompiledData::Location location;
         QString qualifier;
@@ -558,7 +558,7 @@ public:
 
     struct ScriptReference
     {
-        ScriptReference() : script(0) {}
+        ScriptReference() : script(nullptr) {}
 
         QV4::CompiledData::Location location;
         QString qualifier;
diff --git a/src/qml/qml/qqmltypenamecache.cpp b/src/qml/qml/qqmltypenamecache.cpp
index 32b0fa16c4..8f1a61e6ad 100644
--- a/src/qml/qml/qqmltypenamecache.cpp
+++ b/src/qml/qml/qqmltypenamecache.cpp
@@ -56,7 +56,7 @@ void QQmlTypeNameCache::add(const QHashedString &name, const QUrl &url, const QH
 {
     if (nameSpace.length() != 0) {
         QQmlImportRef *i = m_namedImports.value(nameSpace);
-        Q_ASSERT(i != 0);
+        Q_ASSERT(i != nullptr);
         i->compositeSingletons.insert(name, url);
         return;
     }
@@ -75,7 +75,7 @@ void QQmlTypeNameCache::add(const QHashedString &name, int importedScriptIndex,
 
     if (nameSpace.length() != 0) {
         QQmlImportRef *i = m_namedImports.value(nameSpace);
-        Q_ASSERT(i != 0);
+        Q_ASSERT(i != nullptr);
         m_namespacedImports[i].insert(name, import);
         return;
     }
@@ -98,10 +98,10 @@ QQmlTypeNameCache::Result QQmlTypeNameCache::query(const QHashedStringRef &name)
 
     if (!result.isValid()) {
         // Look up anonymous types from the imports of this document
-        QQmlImportNamespace *typeNamespace = 0;
+        QQmlImportNamespace *typeNamespace = nullptr;
         QList<QQmlError> errors;
         QQmlType t;
-        bool typeFound = m_imports.resolveType(name, &t, 0, 0, &typeNamespace, &errors);
+        bool typeFound = m_imports.resolveType(name, &t, nullptr, nullptr, &typeNamespace, &errors);
         if (typeFound) {
             return Result(t);
         }
@@ -126,10 +126,10 @@ QQmlTypeNameCache::Result QQmlTypeNameCache::query(const QHashedStringRef &name,
         // ### it would be nice if QQmlImports allowed us to resolve a namespace
         // first, and then types on it.
         QString qualifiedTypeName = importNamespace->m_qualifier + QLatin1Char('.') + name.toString();
-        QQmlImportNamespace *typeNamespace = 0;
+        QQmlImportNamespace *typeNamespace = nullptr;
         QList<QQmlError> errors;
         QQmlType t;
-        bool typeFound = m_imports.resolveType(qualifiedTypeName, &t, 0, 0, &typeNamespace, &errors);
+        bool typeFound = m_imports.resolveType(qualifiedTypeName, &t, nullptr, nullptr, &typeNamespace, &errors);
         if (typeFound) {
             return Result(t);
         }
@@ -151,10 +151,10 @@ QQmlTypeNameCache::Result QQmlTypeNameCache::query(const QV4::String *name, QQml
     if (!result.isValid()) {
         // Look up anonymous types from the imports of this document
         QString typeName = name->toQStringNoThrow();
-        QQmlImportNamespace *typeNamespace = 0;
+        QQmlImportNamespace *typeNamespace = nullptr;
         QList<QQmlError> errors;
         QQmlType t;
-        bool typeFound = m_imports.resolveType(typeName, &t, 0, 0, &typeNamespace, &errors,
+        bool typeFound = m_imports.resolveType(typeName, &t, nullptr, nullptr, &typeNamespace, &errors,
                                                QQmlType::AnyRegistrationType, recursionRestriction);
         if (typeFound) {
             return Result(t);
@@ -186,10 +186,10 @@ QQmlTypeNameCache::Result QQmlTypeNameCache::query(const QV4::String *name, cons
         // ### it would be nice if QQmlImports allowed us to resolve a namespace
         // first, and then types on it.
         QString qualifiedTypeName = importNamespace->m_qualifier + QLatin1Char('.') + name->toQStringNoThrow();
-        QQmlImportNamespace *typeNamespace = 0;
+        QQmlImportNamespace *typeNamespace = nullptr;
         QList<QQmlError> errors;
         QQmlType t;
-        bool typeFound = m_imports.resolveType(qualifiedTypeName, &t, 0, 0, &typeNamespace, &errors);
+        bool typeFound = m_imports.resolveType(qualifiedTypeName, &t, nullptr, nullptr, &typeNamespace, &errors);
         if (typeFound) {
             return Result(t);
         }
diff --git a/src/qml/qml/qqmltypenamecache_p.h b/src/qml/qml/qqmltypenamecache_p.h
index 8ac25c4fbe..c2f7a70d03 100644
--- a/src/qml/qml/qqmltypenamecache_p.h
+++ b/src/qml/qml/qqmltypenamecache_p.h
@@ -162,7 +162,7 @@ private:
 };
 
 QQmlTypeNameCache::Result::Result()
-: importNamespace(0), scriptIndex(-1)
+: importNamespace(nullptr), scriptIndex(-1)
 {
 }
 
@@ -172,12 +172,12 @@ QQmlTypeNameCache::Result::Result(const QQmlImportRef *importNamespace)
 }
 
 QQmlTypeNameCache::Result::Result(const QQmlType &type)
-: type(type), importNamespace(0), scriptIndex(-1)
+: type(type), importNamespace(nullptr), scriptIndex(-1)
 {
 }
 
 QQmlTypeNameCache::Result::Result(int scriptIndex)
-: importNamespace(0), scriptIndex(scriptIndex)
+: importNamespace(nullptr), scriptIndex(scriptIndex)
 {
 }
 
diff --git a/src/qml/qml/qqmltypewrapper.cpp b/src/qml/qml/qqmltypewrapper.cpp
index 8e067932bb..6dbf6ad8c1 100644
--- a/src/qml/qml/qqmltypewrapper.cpp
+++ b/src/qml/qml/qqmltypewrapper.cpp
@@ -85,7 +85,7 @@ bool QQmlTypeWrapper::isSingleton() const
 QObject* QQmlTypeWrapper::singletonObject() const
 {
     if (!isSingleton())
-        return 0;
+        return nullptr;
 
     QQmlEngine *e = engine()->qmlEngine();
     QQmlType::SingletonInstanceInfo *siinfo = d()->type().singletonInstanceInfo();
diff --git a/src/qml/qml/qqmlvaluetype.cpp b/src/qml/qml/qqmlvaluetype.cpp
index 520f512b1a..270414a676 100644
--- a/src/qml/qml/qqmlvaluetype.cpp
+++ b/src/qml/qml/qqmlvaluetype.cpp
@@ -68,7 +68,7 @@ struct QQmlValueTypeFactoryImpl
 QQmlValueTypeFactoryImpl::QQmlValueTypeFactoryImpl()
 {
     for (unsigned int ii = 0; ii < QVariant::UserType; ++ii)
-        valueTypes[ii] = 0;
+        valueTypes[ii] = nullptr;
 
     // See types wrapped in qqmlmodelindexvaluetype_p.h
     qRegisterMetaType<QItemSelectionRange>();
@@ -83,7 +83,7 @@ QQmlValueTypeFactoryImpl::~QQmlValueTypeFactoryImpl()
 bool QQmlValueTypeFactoryImpl::isValueType(int idx)
 {
     if (idx >= (int)QVariant::UserType) {
-        return (valueType(idx) != 0);
+        return (valueType(idx) != nullptr);
     } else if (idx >= 0
             && idx != QVariant::StringList
             && idx != QMetaType::QObjectStar
@@ -130,7 +130,7 @@ const QMetaObject *QQmlValueTypeFactoryImpl::metaObjectForMetaType(int t)
     QMetaType metaType(t);
     if (metaType.flags() & QMetaType::IsGadget)
         return metaType.metaObject();
-    return 0;
+    return nullptr;
 }
 
 QQmlValueType *QQmlValueTypeFactoryImpl::valueType(int idx)
@@ -141,7 +141,7 @@ QQmlValueType *QQmlValueTypeFactoryImpl::valueType(int idx)
 
         QHash<int, QQmlValueType *>::iterator it = userTypes.find(idx);
         if (it == userTypes.end()) {
-            QQmlValueType *vt = 0;
+            QQmlValueType *vt = nullptr;
             if (const QMetaObject *mo = metaObjectForMetaType(idx))
                 vt = new QQmlValueType(idx, mo);
             it = userTypes.insert(idx, vt);
@@ -209,14 +209,14 @@ QQmlValueType::~QQmlValueType()
 {
     QObjectPrivate *op = QObjectPrivate::get(this);
     Q_ASSERT(op->metaObject == this);
-    op->metaObject = 0;
+    op->metaObject = nullptr;
     ::free(const_cast<QMetaObject *>(_metaObject));
     metaType.destroy(gadgetPtr);
 }
 
 void QQmlValueType::read(QObject *obj, int idx)
 {
-    void *a[] = { gadgetPtr, 0 };
+    void *a[] = { gadgetPtr, nullptr };
     QMetaObject::metacall(obj, QMetaObject::ReadProperty, idx, a);
 }
 
@@ -224,7 +224,7 @@ void QQmlValueType::write(QObject *obj, int idx, QQmlPropertyData::WriteFlags fl
 {
     Q_ASSERT(gadgetPtr);
     int status = -1;
-    void *a[] = { gadgetPtr, 0, &status, &flags };
+    void *a[] = { gadgetPtr, nullptr, &status, &flags };
     QMetaObject::metacall(obj, QMetaObject::WriteProperty, idx, a);
 }
 
diff --git a/src/qml/qml/qqmlvaluetype_p.h b/src/qml/qml/qqmlvaluetype_p.h
index 0502a5d665..7d8473db0e 100644
--- a/src/qml/qml/qqmlvaluetype_p.h
+++ b/src/qml/qml/qqmlvaluetype_p.h
@@ -272,19 +272,19 @@ int qmlRegisterValueTypeEnums(const char *uri, int versionMajor, int versionMino
     QQmlPrivate::RegisterType type = {
         0,
 
-        qRegisterNormalizedMetaType<T *>(pointerName.constData()), 0, 0, 0,
+        qRegisterNormalizedMetaType<T *>(pointerName.constData()), 0, 0, nullptr,
 
         QString(),
 
         uri, versionMajor, versionMinor, qmlName, &T::staticMetaObject,
 
-        0, 0,
+        nullptr, nullptr,
 
         0, 0, 0,
 
-        0, 0,
+        nullptr, nullptr,
 
-        0,
+        nullptr,
         0
     };
 
diff --git a/src/qml/qml/qqmlvaluetypeproxybinding.cpp b/src/qml/qml/qqmlvaluetypeproxybinding.cpp
index 7a3e4b2df4..d5cff26444 100644
--- a/src/qml/qml/qqmlvaluetypeproxybinding.cpp
+++ b/src/qml/qml/qqmlvaluetypeproxybinding.cpp
@@ -43,7 +43,7 @@ QT_BEGIN_NAMESPACE
 
 QQmlValueTypeProxyBinding::QQmlValueTypeProxyBinding(QObject *o, QQmlPropertyIndex index)
     : QQmlAbstractBinding(),
-      m_bindings(0)
+      m_bindings(nullptr)
 {
     m_target = o;
     m_targetIndex = index;
@@ -93,7 +93,7 @@ Removes a collection of bindings, corresponding to the set bits in \a mask.
 void QQmlValueTypeProxyBinding::removeBindings(quint32 mask)
 {
     QQmlAbstractBinding *binding = m_bindings.data();
-    QQmlAbstractBinding *lastBinding = 0;
+    QQmlAbstractBinding *lastBinding = nullptr;
 
     while (binding) {
         const int valueTypeIndex = binding->targetPropertyIndex().valueTypeIndex();
@@ -102,7 +102,7 @@ void QQmlValueTypeProxyBinding::removeBindings(quint32 mask)
             remove->setAddedToObject(false);
             binding = remove->nextBinding();
 
-            if (lastBinding == 0)
+            if (lastBinding == nullptr)
                 m_bindings = remove->nextBinding();
             else
                 lastBinding->setNextBinding(remove->nextBinding());
diff --git a/src/qml/qml/qqmlvaluetypewrapper.cpp b/src/qml/qml/qqmlvaluetypewrapper.cpp
index c643beeadc..a28115d192 100644
--- a/src/qml/qml/qqmlvaluetypewrapper.cpp
+++ b/src/qml/qml/qqmlvaluetypewrapper.cpp
@@ -131,7 +131,7 @@ bool QQmlValueTypeReference::readReferenceValue() const
         // variant-containing-value-type reference
         QVariant variantReferenceValue;
 
-        void *a[] = { &variantReferenceValue, 0 };
+        void *a[] = { &variantReferenceValue, nullptr };
         QMetaObject::metacall(d()->object, QMetaObject::ReadProperty, d()->property, a);
 
         int variantReferenceType = variantReferenceValue.userType();
@@ -141,14 +141,14 @@ bool QQmlValueTypeReference::readReferenceValue() const
             // We need to modify this reference to the updated value type, if
             // possible, or return false if it is not a value type.
             if (QQmlValueTypeFactory::isValueType(variantReferenceType)) {
-                QQmlPropertyCache *cache = 0;
+                QQmlPropertyCache *cache = nullptr;
                 if (const QMetaObject *mo = QQmlValueTypeFactory::metaObjectForMetaType(variantReferenceType))
                     cache = QJSEnginePrivate::get(engine())->cache(mo);
                 if (d()->gadgetPtr) {
                     d()->valueType->metaType.destruct(d()->gadgetPtr);
                     ::operator delete(d()->gadgetPtr);
                 }
-                d()->gadgetPtr =0;
+                d()->gadgetPtr =nullptr;
                 d()->setPropertyCache(cache);
                 d()->valueType = QQmlValueTypeFactory::valueType(variantReferenceType);
                 if (!cache)
@@ -161,10 +161,10 @@ bool QQmlValueTypeReference::readReferenceValue() const
     } else {
         if (!d()->gadgetPtr) {
             d()->gadgetPtr = ::operator new(d()->valueType->metaType.sizeOf());
-            d()->valueType->metaType.construct(d()->gadgetPtr, 0);
+            d()->valueType->metaType.construct(d()->gadgetPtr, nullptr);
         }
         // value-type reference
-        void *args[] = { d()->gadgetPtr, 0 };
+        void *args[] = { d()->gadgetPtr, nullptr };
         QMetaObject::metacall(d()->object, QMetaObject::ReadProperty, d()->property, args);
     }
     return true;
@@ -191,7 +191,7 @@ ReturnedValue QQmlValueTypeWrapper::create(ExecutionEngine *engine, QObject *obj
     r->d()->property = property;
     r->d()->setPropertyCache(QJSEnginePrivate::get(engine)->cache(metaObject));
     r->d()->valueType = QQmlValueTypeFactory::valueType(typeId);
-    r->d()->gadgetPtr = 0;
+    r->d()->gadgetPtr = nullptr;
     return r->asReturnedValue();
 }
 
@@ -203,7 +203,7 @@ ReturnedValue QQmlValueTypeWrapper::create(ExecutionEngine *engine, const QVaria
     Scoped<QQmlValueTypeWrapper> r(scope, engine->memoryManager->allocObject<QQmlValueTypeWrapper>());
     r->d()->setPropertyCache(QJSEnginePrivate::get(engine)->cache(metaObject));
     r->d()->valueType = QQmlValueTypeFactory::valueType(typeId);
-    r->d()->gadgetPtr = 0;
+    r->d()->gadgetPtr = nullptr;
     r->d()->setValue(value);
     return r->asReturnedValue();
 }
@@ -246,13 +246,13 @@ PropertyAttributes QQmlValueTypeWrapper::query(const Managed *m, String *name)
     Q_ASSERT(m->as<const QQmlValueTypeWrapper>());
     const QQmlValueTypeWrapper *r = static_cast<const QQmlValueTypeWrapper *>(m);
 
-    QQmlPropertyData *result = r->d()->propertyCache()->property(name, 0, 0);
+    QQmlPropertyData *result = r->d()->propertyCache()->property(name, nullptr, nullptr);
     return result ? Attr_Data : Attr_Invalid;
 }
 
 void QQmlValueTypeWrapper::advanceIterator(Managed *m, ObjectIterator *it, Value *name, uint *index, Property *p, PropertyAttributes *attributes)
 {
-    name->setM(0);
+    name->setM(nullptr);
     *index = UINT_MAX;
 
     QQmlValueTypeWrapper *that = static_cast<QQmlValueTypeWrapper*>(m);
@@ -299,7 +299,7 @@ bool QQmlValueTypeWrapper::write(QObject *target, int propertyIndex) const
         if (!d()->gadgetPtr) {
             Q_ALLOCA_ASSIGN(void, gadget, d()->valueType->metaType.sizeOf());
             d()->gadgetPtr = gadget;
-            d()->valueType->metaType.construct(d()->gadgetPtr, 0);
+            d()->valueType->metaType.construct(d()->gadgetPtr, nullptr);
             destructGadgetOnExit = true;
         }
         if (!ref->readReferenceValue())
@@ -308,12 +308,12 @@ bool QQmlValueTypeWrapper::write(QObject *target, int propertyIndex) const
 
     int flags = 0;
     int status = -1;
-    void *a[] = { d()->gadgetPtr, 0, &status, &flags };
+    void *a[] = { d()->gadgetPtr, nullptr, &status, &flags };
     QMetaObject::metacall(target, QMetaObject::WriteProperty, propertyIndex, a);
 
     if (destructGadgetOnExit) {
         d()->valueType->metaType.destruct(d()->gadgetPtr);
-        d()->gadgetPtr = 0;
+        d()->gadgetPtr = nullptr;
     }
     return true;
 }
@@ -367,7 +367,7 @@ ReturnedValue QQmlValueTypeWrapper::get(const Managed *m, String *name, bool *ha
             return Primitive::undefinedValue().asReturnedValue();
     }
 
-    QQmlPropertyData *result = r->d()->propertyCache()->property(name, 0, 0);
+    QQmlPropertyData *result = r->d()->propertyCache()->property(name, nullptr, nullptr);
     if (!result)
         return Object::get(m, name, hasProperty);
 
@@ -436,7 +436,7 @@ bool QQmlValueTypeWrapper::put(Managed *m, String *name, const Value &value)
     }
 
     const QMetaObject *metaObject = r->d()->propertyCache()->metaObject();
-    const QQmlPropertyData *pd = r->d()->propertyCache()->property(name, 0, 0);
+    const QQmlPropertyData *pd = r->d()->propertyCache()->property(name, nullptr, nullptr);
     if (!pd)
         return false;
 
@@ -505,13 +505,13 @@ bool QQmlValueTypeWrapper::put(Managed *m, String *name, const Value &value)
 
             int flags = 0;
             int status = -1;
-            void *a[] = { &variantReferenceValue, 0, &status, &flags };
+            void *a[] = { &variantReferenceValue, nullptr, &status, &flags };
             QMetaObject::metacall(reference->d()->object, QMetaObject::WriteProperty, reference->d()->property, a);
 
         } else {
             int flags = 0;
             int status = -1;
-            void *a[] = { r->d()->gadgetPtr, 0, &status, &flags };
+            void *a[] = { r->d()->gadgetPtr, nullptr, &status, &flags };
             QMetaObject::metacall(reference->d()->object, QMetaObject::WriteProperty, reference->d()->property, a);
         }
     }
diff --git a/src/qml/qml/qqmlvme.cpp b/src/qml/qml/qqmlvme.cpp
index 72d4ab7e8f..018769948d 100644
--- a/src/qml/qml/qqmlvme.cpp
+++ b/src/qml/qml/qqmlvme.cpp
@@ -96,7 +96,7 @@ bool QQmlVME::componentCompleteEnabled()
 }
 
 QQmlVMEGuard::QQmlVMEGuard()
-: m_objectCount(0), m_objects(0), m_contextCount(0), m_contexts(0)
+: m_objectCount(0), m_objects(nullptr), m_contextCount(0), m_contexts(nullptr)
 {
 }
 
@@ -126,9 +126,9 @@ void QQmlVMEGuard::clear()
     delete [] m_contexts;
 
     m_objectCount = 0;
-    m_objects = 0;
+    m_objects = nullptr;
     m_contextCount = 0;
-    m_contexts = 0;
+    m_contexts = nullptr;
 }
 
 bool QQmlVMEGuard::isOK() const
diff --git a/src/qml/qml/qqmlvme_p.h b/src/qml/qml/qqmlvme_p.h
index 99d63380ad..9a94ac6258 100644
--- a/src/qml/qml/qqmlvme_p.h
+++ b/src/qml/qml/qqmlvme_p.h
@@ -83,7 +83,7 @@ namespace QQmlVMETypes {
     struct State {
         enum Flag { Deferred = 0x00000001 };
 
-        State() : flags(0), context(0), instructionStream(0) {}
+        State() : flags(0), context(nullptr), instructionStream(nullptr) {}
         quint32 flags;
         QQmlContextData *context;
         const char *instructionStream;
@@ -143,7 +143,7 @@ private:
 };
 
 QQmlInstantiationInterrupt::QQmlInstantiationInterrupt()
-    : mode(None), nsecs(0), runWhile(0)
+    : mode(None), nsecs(0), runWhile(nullptr)
 {
 }
 
@@ -153,7 +153,7 @@ QQmlInstantiationInterrupt::QQmlInstantiationInterrupt(volatile bool *runWhile,
 }
 
 QQmlInstantiationInterrupt::QQmlInstantiationInterrupt(int nsecs)
-    : mode(Time), nsecs(nsecs), runWhile(0)
+    : mode(Time), nsecs(nsecs), runWhile(nullptr)
 {
 }
 
diff --git a/src/qml/qml/qqmlvmemetaobject.cpp b/src/qml/qml/qqmlvmemetaobject.cpp
index 73cb20dc7f..c1d3980b58 100644
--- a/src/qml/qml/qqmlvmemetaobject.cpp
+++ b/src/qml/qml/qqmlvmemetaobject.cpp
@@ -64,7 +64,7 @@ static void list_append(QQmlListProperty<QObject> *prop, QObject *o)
 {
     QList<QObject *> *list = static_cast<QList<QObject *> *>(prop->data);
     list->append(o);
-    static_cast<QQmlVMEMetaObject *>(prop->dummy1)->activate(prop->object, reinterpret_cast<quintptr>(prop->dummy2), 0);
+    static_cast<QQmlVMEMetaObject *>(prop->dummy1)->activate(prop->object, reinterpret_cast<quintptr>(prop->dummy2), nullptr);
 }
 
 static int list_count(QQmlListProperty<QObject> *prop)
@@ -83,11 +83,11 @@ static void list_clear(QQmlListProperty<QObject> *prop)
 {
     QList<QObject *> *list = static_cast<QList<QObject *> *>(prop->data);
     list->clear();
-    static_cast<QQmlVMEMetaObject *>(prop->dummy1)->activate(prop->object, reinterpret_cast<quintptr>(prop->dummy2), 0);
+    static_cast<QQmlVMEMetaObject *>(prop->dummy1)->activate(prop->object, reinterpret_cast<quintptr>(prop->dummy2), nullptr);
 }
 
 QQmlVMEVariantQObjectPtr::QQmlVMEVariantQObjectPtr()
-    : QQmlGuard<QObject>(0), m_target(0), m_index(-1)
+    : QQmlGuard<QObject>(nullptr), m_target(nullptr), m_index(-1)
 {
 }
 
@@ -111,7 +111,7 @@ void QQmlVMEVariantQObjectPtr::objectDestroyed(QObject *)
             }
         }
 
-        m_target->activate(m_target->object, m_target->methodOffset() + m_index, 0);
+        m_target->activate(m_target->object, m_target->methodOffset() + m_index, nullptr);
     }
 }
 
@@ -150,7 +150,7 @@ void QQmlVMEMetaObjectEndpoint::tryConnect()
     if (metaObject.flag()) {
         // This is actually notify
         int sigIdx = metaObject->methodOffset() + aliasId + metaObject->compiledObject->nProperties;
-        metaObject->activate(metaObject->object, sigIdx, 0);
+        metaObject->activate(metaObject->object, sigIdx, nullptr);
     } else {
         const QV4::CompiledData::Alias *aliasData = &metaObject->compiledObject->aliasTable()[aliasId];
         if (!aliasData->isObjectAlias()) {
@@ -179,7 +179,7 @@ void QQmlVMEMetaObjectEndpoint::tryConnect()
 QQmlInterceptorMetaObject::QQmlInterceptorMetaObject(QObject *obj, QQmlPropertyCache *cache)
     : object(obj),
       cache(cache),
-      interceptors(0),
+      interceptors(nullptr),
       hasAssignedMetaObjectData(false)
 {
     QObjectPrivate *op = QObjectPrivate::get(obj);
@@ -320,7 +320,7 @@ QQmlVMEMetaObject::QQmlVMEMetaObject(QV4::ExecutionEngine *engine,
     : QQmlInterceptorMetaObject(obj, cache),
       engine(engine),
       ctxt(QQmlData::get(obj, true)->outerContext),
-      aliasEndpoints(0), compilationUnit(qmlCompilationUnit), compiledObject(0)
+      aliasEndpoints(nullptr), compilationUnit(qmlCompilationUnit), compiledObject(nullptr)
 {
     Q_ASSERT(engine);
     QQmlData::get(obj)->hasVMEMetaObject = true;
@@ -358,7 +358,7 @@ QV4::MemberData *QQmlVMEMetaObject::propertyAndMethodStorageAsMemberData() const
             // such as the varProperties array) will have been cleaned up, but the
             // QObject ptr will not yet have been deleted (eg, waiting on deleteLater).
             // In this situation, return 0.
-            return 0;
+            return nullptr;
     }
 
     return static_cast<QV4::MemberData*>(propertyAndMethodStorage.asManaged());
@@ -575,13 +575,13 @@ QObject* QQmlVMEMetaObject::readPropertyAsQObject(int id) const
 {
     QV4::MemberData *md = propertyAndMethodStorageAsMemberData();
     if (!md)
-        return 0;
+        return nullptr;
 
     QV4::Scope scope(engine);
     QV4::ScopedValue sv(scope, *(md->data() + id));
     const QV4::QObjectWrapper *wrapper = sv->as<QV4::QObjectWrapper>();
     if (!wrapper)
-        return 0;
+        return nullptr;
     return wrapper->object();
 }
 
@@ -589,7 +589,7 @@ QList<QObject *> *QQmlVMEMetaObject::readPropertyAsList(int id) const
 {
     QV4::MemberData *md = propertyAndMethodStorageAsMemberData();
     if (!md)
-        return 0;
+        return nullptr;
 
     QV4::Scope scope(engine);
     QV4::Scoped<QV4::VariantObject> v(scope, *(md->data() + id));
@@ -643,7 +643,7 @@ int QQmlVMEMetaObject::metaCall(QObject *o, QMetaObject::Call c, int _id, void *
 
                 if (t == QV4::CompiledData::Property::Var) {
                     // the context can be null if accessing var properties from cpp after re-parenting an item.
-                    QQmlEnginePrivate *ep = (ctxt == 0 || ctxt->engine == 0) ? 0 : QQmlEnginePrivate::get(ctxt->engine);
+                    QQmlEnginePrivate *ep = (ctxt == nullptr || ctxt->engine == nullptr) ? nullptr : QQmlEnginePrivate::get(ctxt->engine);
                     if (ep) {
                         if (c == QMetaObject::ReadProperty) {
                             *reinterpret_cast<QVariant *>(a[0]) = readPropertyAsVariant(id);
@@ -836,7 +836,7 @@ int QQmlVMEMetaObject::metaCall(QObject *o, QMetaObject::Call c, int _id, void *
                 }
 
                 if (c == QMetaObject::WriteProperty && needActivate) {
-                    activate(object, methodOffset() + id, 0);
+                    activate(object, methodOffset() + id, nullptr);
                 }
 
                 return -1;
@@ -848,7 +848,7 @@ int QQmlVMEMetaObject::metaCall(QObject *o, QMetaObject::Call c, int _id, void *
                 const QV4::CompiledData::Alias *aliasData = &compiledObject->aliasTable()[id];
 
                 if ((aliasData->flags & QV4::CompiledData::Alias::AliasPointsToPointerObject) && c == QMetaObject::ReadProperty)
-                        *reinterpret_cast<void **>(a[0]) = 0;
+                        *reinterpret_cast<void **>(a[0]) = nullptr;
 
                 if (!ctxt) return -1;
 
@@ -899,7 +899,7 @@ int QQmlVMEMetaObject::metaCall(QObject *o, QMetaObject::Call c, int _id, void *
                     int rv = QMetaObject::metacall(valueType, c, valueTypePropertyIndex, a);
 
                     if (c == QMetaObject::WriteProperty)
-                        valueType->write(target, coreIndex, 0x00);
+                        valueType->write(target, coreIndex, nullptr);
 
                     return rv;
 
@@ -1037,7 +1037,7 @@ void QQmlVMEMetaObject::writeVarProperty(int id, const QV4::Value &value)
     if (oldVariant)
         oldVariant->removeVmePropertyReference();
 
-    QObject *valueObject = 0;
+    QObject *valueObject = nullptr;
     QQmlVMEVariantQObjectPtr *guard = getQObjectGuardForProperty(id);
 
     // And, if the new value is a scarce resource, we need to ensure that it does not get
@@ -1060,7 +1060,7 @@ void QQmlVMEMetaObject::writeVarProperty(int id, const QV4::Value &value)
 
     // Write the value and emit change signal as appropriate.
     md->set(engine, id, value);
-    activate(object, methodOffset() + id, 0);
+    activate(object, methodOffset() + id, nullptr);
 }
 
 void QQmlVMEMetaObject::writeProperty(int id, const QVariant &value)
@@ -1088,7 +1088,7 @@ void QQmlVMEMetaObject::writeProperty(int id, const QVariant &value)
         QVariant currentValue = readPropertyAsVariant(id);
         md->set(engine, id, newv);
         if ((currentValue.userType() != value.userType() || currentValue != value))
-            activate(object, methodOffset() + id, 0);
+            activate(object, methodOffset() + id, nullptr);
     } else {
         bool needActivate = false;
         if (value.userType() == QMetaType::QObjectStar) {
@@ -1111,7 +1111,7 @@ void QQmlVMEMetaObject::writeProperty(int id, const QVariant &value)
         }
 
         if (needActivate)
-            activate(object, methodOffset() + id, 0);
+            activate(object, methodOffset() + id, nullptr);
     }
 }
 
@@ -1187,7 +1187,7 @@ bool QQmlVMEMetaObject::aliasTarget(int index, QObject **target, int *coreIndex,
 {
     Q_ASSERT(compiledObject && (index >= propOffset() + int(compiledObject->nProperties)));
 
-    *target = 0;
+    *target = nullptr;
     *coreIndex = -1;
     *valueTypeIndex = -1;
 
@@ -1289,7 +1289,7 @@ QQmlVMEVariantQObjectPtr *QQmlVMEMetaObject::getQObjectGuardForProperty(int inde
         }
     }
 
-    return 0;
+    return nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/qml/qml/qqmlvmemetaobject_p.h b/src/qml/qml/qqmlvmemetaobject_p.h
index 7881240452..46bff68327 100644
--- a/src/qml/qml/qqmlvmemetaobject_p.h
+++ b/src/qml/qml/qqmlvmemetaobject_p.h
@@ -112,7 +112,7 @@ public:
             if (it->m_propertyIndex == propertyIndex)
                 return true;
         }
-        if (auto parentInterceptor = ((parent.isT1() && parent.flag()) ? static_cast<QQmlInterceptorMetaObject *>(parent.asT1()) : 0))
+        if (auto parentInterceptor = ((parent.isT1() && parent.flag()) ? static_cast<QQmlInterceptorMetaObject *>(parent.asT1()) : nullptr))
             return parentInterceptor->intercepts(propertyIndex);
         return false;
     }
@@ -141,7 +141,7 @@ inline QQmlInterceptorMetaObject *QQmlInterceptorMetaObject::get(QObject *obj)
         }
     }
 
-    return 0;
+    return nullptr;
 }
 
 class QQmlVMEMetaObjectEndpoint;
@@ -243,7 +243,7 @@ QQmlVMEMetaObject *QQmlVMEMetaObject::get(QObject *obj)
         }
     }
 
-    return 0;
+    return nullptr;
 }
 
 int QQmlVMEMetaObject::propOffset() const
@@ -271,7 +271,7 @@ QQmlVMEMetaObject *QQmlVMEMetaObject::parentVMEMetaObject() const
     if (parent.isT1() && parent.flag())
         return static_cast<QQmlVMEMetaObject *>(parent.asT1());
 
-    return 0;
+    return nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/qml/qml/qqmlxmlhttprequest.cpp b/src/qml/qml/qqmlxmlhttprequest.cpp
index 9c9e199a5b..5673acec89 100644
--- a/src/qml/qml/qqmlxmlhttprequest.cpp
+++ b/src/qml/qml/qqmlxmlhttprequest.cpp
@@ -116,7 +116,7 @@ class DocumentImpl;
 class NodeImpl
 {
 public:
-    NodeImpl() : type(Element), document(0), parent(0) {}
+    NodeImpl() : type(Element), document(nullptr), parent(nullptr) {}
     virtual ~NodeImpl() {
         qDeleteAll(children);
         qDeleteAll(attributes);
@@ -157,7 +157,7 @@ public:
 class DocumentImpl : public QQmlRefCount, public NodeImpl
 {
 public:
-    DocumentImpl() : root(0) { type = Document; }
+    DocumentImpl() : root(nullptr) { type = Document; }
     virtual ~DocumentImpl() {
         delete root;
     }
@@ -306,18 +306,18 @@ void Heap::NodePrototype::init()
     Scope scope(internalClass->engine);
     ScopedObject o(scope, this);
 
-    o->defineAccessorProperty(QStringLiteral("nodeName"), QV4::NodePrototype::method_get_nodeName, 0);
-    o->defineAccessorProperty(QStringLiteral("nodeValue"), QV4::NodePrototype::method_get_nodeValue, 0);
-    o->defineAccessorProperty(QStringLiteral("nodeType"), QV4::NodePrototype::method_get_nodeType, 0);
-    o->defineAccessorProperty(QStringLiteral("namespaceUri"), QV4::NodePrototype::method_get_namespaceUri, 0);
+    o->defineAccessorProperty(QStringLiteral("nodeName"), QV4::NodePrototype::method_get_nodeName, nullptr);
+    o->defineAccessorProperty(QStringLiteral("nodeValue"), QV4::NodePrototype::method_get_nodeValue, nullptr);
+    o->defineAccessorProperty(QStringLiteral("nodeType"), QV4::NodePrototype::method_get_nodeType, nullptr);
+    o->defineAccessorProperty(QStringLiteral("namespaceUri"), QV4::NodePrototype::method_get_namespaceUri, nullptr);
 
-    o->defineAccessorProperty(QStringLiteral("parentNode"), QV4::NodePrototype::method_get_parentNode, 0);
-    o->defineAccessorProperty(QStringLiteral("childNodes"), QV4::NodePrototype::method_get_childNodes, 0);
-    o->defineAccessorProperty(QStringLiteral("firstChild"), QV4::NodePrototype::method_get_firstChild, 0);
-    o->defineAccessorProperty(QStringLiteral("lastChild"), QV4::NodePrototype::method_get_lastChild, 0);
-    o->defineAccessorProperty(QStringLiteral("previousSibling"), QV4::NodePrototype::method_get_previousSibling, 0);
-    o->defineAccessorProperty(QStringLiteral("nextSibling"), QV4::NodePrototype::method_get_nextSibling, 0);
-    o->defineAccessorProperty(QStringLiteral("attributes"), QV4::NodePrototype::method_get_attributes, 0);
+    o->defineAccessorProperty(QStringLiteral("parentNode"), QV4::NodePrototype::method_get_parentNode, nullptr);
+    o->defineAccessorProperty(QStringLiteral("childNodes"), QV4::NodePrototype::method_get_childNodes, nullptr);
+    o->defineAccessorProperty(QStringLiteral("firstChild"), QV4::NodePrototype::method_get_firstChild, nullptr);
+    o->defineAccessorProperty(QStringLiteral("lastChild"), QV4::NodePrototype::method_get_lastChild, nullptr);
+    o->defineAccessorProperty(QStringLiteral("previousSibling"), QV4::NodePrototype::method_get_previousSibling, nullptr);
+    o->defineAccessorProperty(QStringLiteral("nextSibling"), QV4::NodePrototype::method_get_nextSibling, nullptr);
+    o->defineAccessorProperty(QStringLiteral("attributes"), QV4::NodePrototype::method_get_attributes, nullptr);
 }
 
 
@@ -644,7 +644,7 @@ ReturnedValue Element::prototype(ExecutionEngine *engine)
         ScopedObject p(scope, engine->newObject());
         ScopedObject pp(scope);
         p->setPrototype((pp = NodePrototype::getProto(engine)));
-        p->defineAccessorProperty(QStringLiteral("tagName"), NodePrototype::method_get_nodeName, 0);
+        p->defineAccessorProperty(QStringLiteral("tagName"), NodePrototype::method_get_nodeName, nullptr);
         d->elementPrototype.set(engine, p);
         engine->v8Engine->freezeObject(p);
     }
@@ -659,9 +659,9 @@ ReturnedValue Attr::prototype(ExecutionEngine *engine)
         ScopedObject p(scope, engine->newObject());
         ScopedObject pp(scope);
         p->setPrototype((pp = NodePrototype::getProto(engine)));
-        p->defineAccessorProperty(QStringLiteral("name"), method_name, 0);
-        p->defineAccessorProperty(QStringLiteral("value"), method_value, 0);
-        p->defineAccessorProperty(QStringLiteral("ownerElement"), method_ownerElement, 0);
+        p->defineAccessorProperty(QStringLiteral("name"), method_name, nullptr);
+        p->defineAccessorProperty(QStringLiteral("value"), method_value, nullptr);
+        p->defineAccessorProperty(QStringLiteral("ownerElement"), method_ownerElement, nullptr);
         d->attrPrototype.set(engine, p);
         engine->v8Engine->freezeObject(p);
     }
@@ -716,8 +716,8 @@ ReturnedValue CharacterData::prototype(ExecutionEngine *v4)
         ScopedObject p(scope, v4->newObject());
         ScopedObject pp(scope);
         p->setPrototype((pp = NodePrototype::getProto(v4)));
-        p->defineAccessorProperty(QStringLiteral("data"), NodePrototype::method_get_nodeValue, 0);
-        p->defineAccessorProperty(QStringLiteral("length"), method_length, 0);
+        p->defineAccessorProperty(QStringLiteral("data"), NodePrototype::method_get_nodeValue, nullptr);
+        p->defineAccessorProperty(QStringLiteral("length"), method_length, nullptr);
         d->characterDataPrototype.set(v4, p);
         v4->v8Engine->freezeObject(p);
     }
@@ -752,8 +752,8 @@ ReturnedValue Text::prototype(ExecutionEngine *v4)
         ScopedObject p(scope, v4->newObject());
         ScopedObject pp(scope);
         p->setPrototype((pp = CharacterData::prototype(v4)));
-        p->defineAccessorProperty(QStringLiteral("isElementContentWhitespace"), method_isElementContentWhitespace, 0);
-        p->defineAccessorProperty(QStringLiteral("wholeText"), method_wholeText, 0);
+        p->defineAccessorProperty(QStringLiteral("isElementContentWhitespace"), method_isElementContentWhitespace, nullptr);
+        p->defineAccessorProperty(QStringLiteral("wholeText"), method_wholeText, nullptr);
         d->textPrototype.set(v4, p);
         v4->v8Engine->freezeObject(p);
     }
@@ -783,10 +783,10 @@ ReturnedValue Document::prototype(ExecutionEngine *v4)
         ScopedObject p(scope, v4->newObject());
         ScopedObject pp(scope);
         p->setPrototype((pp = NodePrototype::getProto(v4)));
-        p->defineAccessorProperty(QStringLiteral("xmlVersion"), method_xmlVersion, 0);
-        p->defineAccessorProperty(QStringLiteral("xmlEncoding"), method_xmlEncoding, 0);
-        p->defineAccessorProperty(QStringLiteral("xmlStandalone"), method_xmlStandalone, 0);
-        p->defineAccessorProperty(QStringLiteral("documentElement"), method_documentElement, 0);
+        p->defineAccessorProperty(QStringLiteral("xmlVersion"), method_xmlVersion, nullptr);
+        p->defineAccessorProperty(QStringLiteral("xmlEncoding"), method_xmlEncoding, nullptr);
+        p->defineAccessorProperty(QStringLiteral("xmlStandalone"), method_xmlStandalone, nullptr);
+        p->defineAccessorProperty(QStringLiteral("documentElement"), method_documentElement, nullptr);
         d->documentPrototype.set(v4, p);
         v4->v8Engine->freezeObject(p);
     }
@@ -797,7 +797,7 @@ ReturnedValue Document::load(ExecutionEngine *v4, const QByteArray &data)
 {
     Scope scope(v4);
 
-    DocumentImpl *document = 0;
+    DocumentImpl *document = nullptr;
     QStack<NodeImpl *> nodeStack;
 
     QXmlStreamReader reader(data);
@@ -885,7 +885,7 @@ ReturnedValue Document::load(ExecutionEngine *v4, const QByteArray &data)
 
 bool Node::isNull() const
 {
-    return d()->d == 0;
+    return d()->d == nullptr;
 }
 
 ReturnedValue NamedNodeMap::getIndexed(const Managed *m, uint index, bool *hasProperty)
@@ -1098,7 +1098,7 @@ private:
 
 QQmlXMLHttpRequest::QQmlXMLHttpRequest(QNetworkAccessManager *manager)
     : m_state(Unsent), m_errorFlag(false), m_sendFlag(false)
-    , m_redirectCount(0), m_gotXml(false), m_textCodec(0), m_network(0), m_nam(manager)
+    , m_redirectCount(0), m_gotXml(false), m_textCodec(nullptr), m_network(nullptr), m_nam(manager)
     , m_responseType()
     , m_parsedDocument()
 {
@@ -1443,7 +1443,7 @@ void QQmlXMLHttpRequest::finished()
     dispatchCallback();
 
     m_thisObject.clear();
-    m_qmlContext.setContextData(0);
+    m_qmlContext.setContextData(nullptr);
 }
 
 
@@ -1516,7 +1516,7 @@ QV4::ReturnedValue QQmlXMLHttpRequest::xmlResponseBody(QV4::ExecutionEngine* eng
 #if QT_CONFIG(textcodec)
 QTextCodec* QQmlXMLHttpRequest::findTextCodec() const
 {
-    QTextCodec *codec = 0;
+    QTextCodec *codec = nullptr;
 
     if (!m_charset.isEmpty())
         codec = QTextCodec::codecForName(m_charset);
@@ -1528,10 +1528,10 @@ QTextCodec* QQmlXMLHttpRequest::findTextCodec() const
     }
 
     if (!codec && m_mime == "text/html")
-        codec = QTextCodec::codecForHtml(m_responseEntityBody, 0);
+        codec = QTextCodec::codecForHtml(m_responseEntityBody, nullptr);
 
     if (!codec)
-        codec = QTextCodec::codecForUtfText(m_responseEntityBody, 0);
+        codec = QTextCodec::codecForUtfText(m_responseEntityBody, nullptr);
 
     if (!codec)
         codec = QTextCodec::codecForName("UTF-8");
@@ -1595,7 +1595,7 @@ void QQmlXMLHttpRequest::destroyNetwork()
     if (m_network) {
         m_network->disconnect();
         m_network->deleteLater();
-        m_network = 0;
+        m_network = nullptr;
     }
 }
 
@@ -1709,12 +1709,12 @@ void QQmlXMLHttpRequestCtor::setupProto()
     p->defineDefaultProperty(QStringLiteral("getAllResponseHeaders"), method_getAllResponseHeaders);
 
     // Read-only properties
-    p->defineAccessorProperty(QStringLiteral("readyState"), method_get_readyState, 0);
-    p->defineAccessorProperty(QStringLiteral("status"),method_get_status, 0);
-    p->defineAccessorProperty(QStringLiteral("statusText"),method_get_statusText, 0);
-    p->defineAccessorProperty(QStringLiteral("responseText"),method_get_responseText, 0);
-    p->defineAccessorProperty(QStringLiteral("responseXML"),method_get_responseXML, 0);
-    p->defineAccessorProperty(QStringLiteral("response"),method_get_response, 0);
+    p->defineAccessorProperty(QStringLiteral("readyState"), method_get_readyState, nullptr);
+    p->defineAccessorProperty(QStringLiteral("status"),method_get_status, nullptr);
+    p->defineAccessorProperty(QStringLiteral("statusText"),method_get_statusText, nullptr);
+    p->defineAccessorProperty(QStringLiteral("responseText"),method_get_responseText, nullptr);
+    p->defineAccessorProperty(QStringLiteral("responseXML"),method_get_responseXML, nullptr);
+    p->defineAccessorProperty(QStringLiteral("response"),method_get_response, nullptr);
 
     // Read-write properties
     p->defineAccessorProperty(QStringLiteral("responseType"), method_get_responseType, method_set_responseType);
diff --git a/src/qml/qml/v8/qqmlbuiltinfunctions.cpp b/src/qml/qml/v8/qqmlbuiltinfunctions.cpp
index 44ad174f37..c147feeb73 100644
--- a/src/qml/qml/v8/qqmlbuiltinfunctions.cpp
+++ b/src/qml/qml/v8/qqmlbuiltinfunctions.cpp
@@ -151,10 +151,10 @@ void Heap::QtObject::init(QQmlEngine *qmlEngine)
         o->defineDefaultProperty(QStringLiteral("createComponent"), QV4::QtObject::method_createComponent);
     }
 
-    o->defineAccessorProperty(QStringLiteral("platform"), QV4::QtObject::method_get_platform, 0);
-    o->defineAccessorProperty(QStringLiteral("application"), QV4::QtObject::method_get_application, 0);
-    o->defineAccessorProperty(QStringLiteral("inputMethod"), QV4::QtObject::method_get_inputMethod, 0);
-    o->defineAccessorProperty(QStringLiteral("styleHints"), QV4::QtObject::method_get_styleHints, 0);
+    o->defineAccessorProperty(QStringLiteral("platform"), QV4::QtObject::method_get_platform, nullptr);
+    o->defineAccessorProperty(QStringLiteral("application"), QV4::QtObject::method_get_application, nullptr);
+    o->defineAccessorProperty(QStringLiteral("inputMethod"), QV4::QtObject::method_get_inputMethod, nullptr);
+    o->defineAccessorProperty(QStringLiteral("styleHints"), QV4::QtObject::method_get_styleHints, nullptr);
 
     o->defineDefaultProperty(QStringLiteral("callLater"), QV4::QtObject::method_callLater);
 }
@@ -233,7 +233,7 @@ ReturnedValue QtObject::method_isQtObject(const FunctionObject *, const Value *,
     if (argc == 0)
         RETURN_RESULT(QV4::Encode(false));
 
-    return QV4::Encode(argv[0].as<QV4::QObjectWrapper>() != 0);
+    return QV4::Encode(argv[0].as<QV4::QObjectWrapper>() != nullptr);
 }
 
 /*!
@@ -948,7 +948,7 @@ ReturnedValue QtObject::method_resolvedUrl(const FunctionObject *b, const Value
 
     QUrl url = scope.engine->toVariant(argv[0], -1).toUrl();
     QQmlEngine *e = scope.engine->qmlEngine();
-    QQmlEnginePrivate *p = 0;
+    QQmlEnginePrivate *p = nullptr;
     if (e) p = QQmlEnginePrivate::get(e);
     if (p) {
         QQmlContextData *ctxt = scope.engine->callingQmlContext();
@@ -1120,7 +1120,7 @@ ReturnedValue QtObject::method_createQmlObject(const FunctionObject *b, const Va
 
     QQmlContextData *context = scope.engine->callingQmlContext();
     Q_ASSERT(context);
-    QQmlContext *effectiveContext = 0;
+    QQmlContext *effectiveContext = nullptr;
     if (context->isPragmaLibraryContext)
         effectiveContext = engine->rootContext();
     else
@@ -1140,7 +1140,7 @@ ReturnedValue QtObject::method_createQmlObject(const FunctionObject *b, const Va
     if (url.isValid() && url.isRelative())
         url = context->resolvedUrl(url);
 
-    QObject *parentArg = 0;
+    QObject *parentArg = nullptr;
     QV4::Scoped<QV4::QObjectWrapper> qobjectWrapper(scope, argv[1]);
     if (!!qobjectWrapper)
         parentArg = qobjectWrapper->object();
@@ -1249,14 +1249,14 @@ ReturnedValue QtObject::method_createComponent(const FunctionObject *b, const Va
     Q_ASSERT(context);
     QQmlContextData *effectiveContext = context;
     if (context->isPragmaLibraryContext)
-        effectiveContext = 0;
+        effectiveContext = nullptr;
 
     QString arg = argv[0].toQStringNoThrow();
     if (arg.isEmpty())
         RETURN_RESULT(QV4::Encode::null());
 
     QQmlComponent::CompilationMode compileMode = QQmlComponent::PreferSynchronous;
-    QObject *parentArg = 0;
+    QObject *parentArg = nullptr;
 
     int consumedCount = 1;
     if (argc > 1) {
@@ -1283,7 +1283,7 @@ ReturnedValue QtObject::method_createComponent(const FunctionObject *b, const Va
                 if (!parentArg)
                     THROW_GENERIC_ERROR("Qt.createComponent(): Invalid parent object");
             } else if (lastArg->isNull()) {
-                parentArg = 0;
+                parentArg = nullptr;
             } else {
                 THROW_GENERIC_ERROR("Qt.createComponent(): Invalid parent object");
             }
@@ -1514,7 +1514,7 @@ static QString jsStack(QV4::ExecutionEngine *engine) {
 static ReturnedValue writeToConsole(const FunctionObject *b, const Value *, const Value *argv, int argc,
                                     ConsoleLogTypes logType, bool printStack = false)
 {
-    QLoggingCategory *loggingCategory = 0;
+    QLoggingCategory *loggingCategory = nullptr;
     QString result;
     QV4::Scope scope(b);
     QV4::ExecutionEngine *v4 = scope.engine;
diff --git a/src/qml/qml/v8/qv8engine.cpp b/src/qml/qml/v8/qv8engine.cpp
index 2bf623f144..038a75d50a 100644
--- a/src/qml/qml/v8/qv8engine.cpp
+++ b/src/qml/qml/v8/qv8engine.cpp
@@ -125,9 +125,9 @@ static void restoreJSValue(QDataStream &stream, void *data)
 
 QV8Engine::QV8Engine(QJSEngine *qq, QV4::ExecutionEngine *v4)
     : q(qq)
-    , m_engine(0)
+    , m_engine(nullptr)
     , m_v4Engine(v4)
-    , m_xmlHttpRequestData(0)
+    , m_xmlHttpRequestData(nullptr)
 {
 #ifdef Q_PROCESSOR_X86_32
     if (!qCpuHasFeature(SSE2)) {
@@ -159,7 +159,7 @@ QV8Engine::~QV8Engine()
 
 #if QT_CONFIG(xmlstreamreader) && QT_CONFIG(qml_network)
     qt_rem_qmlxmlhttprequest(m_v4Engine, m_xmlHttpRequestData);
-    m_xmlHttpRequestData = 0;
+    m_xmlHttpRequestData = nullptr;
 #endif
 }
 
diff --git a/src/qml/qml/v8/qv8engine_p.h b/src/qml/qml/v8/qv8engine_p.h
index eb2b8b474c..b6a378667e 100644
--- a/src/qml/qml/v8/qv8engine_p.h
+++ b/src/qml/qml/v8/qv8engine_p.h
@@ -230,7 +230,7 @@ inline QV8Engine::Deletable *QV8Engine::extensionData(int index) const
     if (index < m_extensionData.count())
         return m_extensionData[index];
     else
-        return 0;
+        return nullptr;
 }
 
 
diff --git a/src/qml/types/qqmlbind.cpp b/src/qml/types/qqmlbind.cpp
index 91c5a50877..513f7f2997 100644
--- a/src/qml/types/qqmlbind.cpp
+++ b/src/qml/types/qqmlbind.cpp
@@ -60,7 +60,7 @@ QT_BEGIN_NAMESPACE
 class QQmlBindPrivate : public QObjectPrivate
 {
 public:
-    QQmlBindPrivate() : obj(0), componentComplete(true), delayed(false), pendingEval(false) {}
+    QQmlBindPrivate() : obj(nullptr), componentComplete(true), delayed(false), pendingEval(false) {}
     ~QQmlBindPrivate() { }
 
     QQmlNullableValue<bool> when;
@@ -370,7 +370,7 @@ void QQmlBind::eval()
             //restore any previous binding
             if (d->prevBind) {
                 QQmlAbstractBinding::Ptr p = d->prevBind;
-                d->prevBind = 0;
+                d->prevBind = nullptr;
                 QQmlPropertyPrivate::setBinding(p.data());
             }
             return;
diff --git a/src/qml/types/qqmlbind_p.h b/src/qml/types/qqmlbind_p.h
index c9dd14b58a..5bf9ef85c6 100644
--- a/src/qml/types/qqmlbind_p.h
+++ b/src/qml/types/qqmlbind_p.h
@@ -71,7 +71,7 @@ class Q_AUTOTEST_EXPORT QQmlBind : public QObject, public QQmlPropertyValueSourc
     Q_PROPERTY(bool delayed READ delayed WRITE setDelayed REVISION 8)
 
 public:
-    QQmlBind(QObject *parent=0);
+    QQmlBind(QObject *parent=nullptr);
     ~QQmlBind();
 
     bool when() const;
diff --git a/src/qml/types/qqmlconnections.cpp b/src/qml/types/qqmlconnections.cpp
index e218cdcfe4..a43562a7b8 100644
--- a/src/qml/types/qqmlconnections.cpp
+++ b/src/qml/types/qqmlconnections.cpp
@@ -56,7 +56,7 @@ QT_BEGIN_NAMESPACE
 class QQmlConnectionsPrivate : public QObjectPrivate
 {
 public:
-    QQmlConnectionsPrivate() : target(0), enabled(true), targetSet(false), ignoreUnknownSignals(false), componentcomplete(true) {}
+    QQmlConnectionsPrivate() : target(nullptr), enabled(true), targetSet(false), ignoreUnknownSignals(false), componentcomplete(true) {}
 
     QList<QQmlBoundSignal*> boundsignals;
     QObject *target;
@@ -274,7 +274,7 @@ void QQmlConnections::connectSignals()
         return;
     QObject *target = this->target();
     QQmlData *ddata = QQmlData::get(this);
-    QQmlContextData *ctxtdata = ddata ? ddata->outerContext : 0;
+    QQmlContextData *ctxtdata = ddata ? ddata->outerContext : nullptr;
 
     const QV4::CompiledData::Unit *qmlUnit = d->compilationUnit->data;
     for (const QV4::CompiledData::Binding *binding : qAsConst(d->bindings)) {
@@ -290,7 +290,7 @@ void QQmlConnections::connectSignals()
 
             QQmlBoundSignalExpression *expression = ctxtdata ?
                 new QQmlBoundSignalExpression(target, signalIndex,
-                                              ctxtdata, this, d->compilationUnit->runtimeFunctions[binding->value.compiledScriptIndex]) : 0;
+                                              ctxtdata, this, d->compilationUnit->runtimeFunctions[binding->value.compiledScriptIndex]) : nullptr;
             signal->takeExpression(expression);
             d->boundsignals += signal;
         } else {
diff --git a/src/qml/types/qqmlconnections_p.h b/src/qml/types/qqmlconnections_p.h
index 580b6522de..50e2c59ac3 100644
--- a/src/qml/types/qqmlconnections_p.h
+++ b/src/qml/types/qqmlconnections_p.h
@@ -73,7 +73,7 @@ class Q_AUTOTEST_EXPORT QQmlConnections : public QObject, public QQmlParserStatu
     Q_PROPERTY(bool ignoreUnknownSignals READ ignoreUnknownSignals WRITE setIgnoreUnknownSignals)
 
 public:
-    QQmlConnections(QObject *parent=0);
+    QQmlConnections(QObject *parent=nullptr);
     ~QQmlConnections();
 
     QObject *target() const;
diff --git a/src/qml/types/qqmldelegatemodel.cpp b/src/qml/types/qqmldelegatemodel.cpp
index ca19d68948..44166e4aa8 100644
--- a/src/qml/types/qqmldelegatemodel.cpp
+++ b/src/qml/types/qqmldelegatemodel.cpp
@@ -200,10 +200,10 @@ QQmlDelegateModelParts::QQmlDelegateModelParts(QQmlDelegateModel *parent)
 */
 
 QQmlDelegateModelPrivate::QQmlDelegateModelPrivate(QQmlContext *ctxt)
-    : m_delegate(0)
-    , m_cacheMetaType(0)
+    : m_delegate(nullptr)
+    , m_cacheMetaType(nullptr)
     , m_context(ctxt)
-    , m_parts(0)
+    , m_parts(nullptr)
     , m_filterGroup(QStringLiteral("items"))
     , m_count(0)
     , m_groupCount(Compositor::MinimumGroupCount)
@@ -214,9 +214,9 @@ QQmlDelegateModelPrivate::QQmlDelegateModelPrivate(QQmlContext *ctxt)
     , m_transaction(false)
     , m_incubatorCleanupScheduled(false)
     , m_waitingToFetchMore(false)
-    , m_cacheItems(0)
-    , m_items(0)
-    , m_persistedItems(0)
+    , m_cacheItems(nullptr)
+    , m_items(nullptr)
+    , m_persistedItems(nullptr)
 {
 }
 
@@ -268,10 +268,10 @@ QQmlDelegateModel::~QQmlDelegateModel()
         if (cacheItem->object) {
             delete cacheItem->object;
 
-            cacheItem->object = 0;
+            cacheItem->object = nullptr;
             cacheItem->contextData->invalidate();
             Q_ASSERT(cacheItem->contextData->refCount == 1);
-            cacheItem->contextData = 0;
+            cacheItem->contextData = nullptr;
             cacheItem->scriptRef -= 1;
         }
         cacheItem->groups &= ~Compositor::UnresolvedFlag;
@@ -279,7 +279,7 @@ QQmlDelegateModel::~QQmlDelegateModel()
         if (!cacheItem->isReferenced())
             delete cacheItem;
         else if (cacheItem->incubationTask)
-            cacheItem->incubationTask->vdm = 0;
+            cacheItem->incubationTask->vdm = nullptr;
     }
 }
 
@@ -408,7 +408,7 @@ void QQmlDelegateModel::setDelegate(QQmlComponent *delegate)
         qmlWarning(this) << tr("The delegate of a DelegateModel cannot be changed within onUpdated.");
         return;
     }
-    bool wasValid = d->m_delegate != 0;
+    bool wasValid = d->m_delegate != nullptr;
     d->m_delegate = delegate;
     d->m_delegateValidated = false;
     if (wasValid && d->m_complete) {
@@ -536,7 +536,7 @@ int QQmlDelegateModel::count() const
 
 QQmlDelegateModel::ReleaseFlags QQmlDelegateModelPrivate::release(QObject *object)
 {
-    QQmlDelegateModel::ReleaseFlags stat = 0;
+    QQmlDelegateModel::ReleaseFlags stat = nullptr;
     if (!object)
         return stat;
 
@@ -546,7 +546,7 @@ QQmlDelegateModel::ReleaseFlags QQmlDelegateModelPrivate::release(QObject *objec
             emitDestroyingItem(object);
             if (cacheItem->incubationTask) {
                 releaseIncubator(cacheItem->incubationTask);
-                cacheItem->incubationTask = 0;
+                cacheItem->incubationTask = nullptr;
             }
             cacheItem->Dispose();
             stat |= QQmlInstanceModel::Destroyed;
@@ -582,7 +582,7 @@ void QQmlDelegateModel::cancel(int index)
     if (cacheItem) {
         if (cacheItem->incubationTask && !cacheItem->isObjectReferenced()) {
             d->releaseIncubator(cacheItem->incubationTask);
-            cacheItem->incubationTask = 0;
+            cacheItem->incubationTask = nullptr;
 
             if (cacheItem->object) {
                 QObject *object = cacheItem->object;
@@ -631,7 +631,7 @@ QQmlDelegateModelGroup *QQmlDelegateModelPrivate::group_at(
     QQmlDelegateModelPrivate *d = static_cast<QQmlDelegateModelPrivate *>(property->data);
     return index >= 0 && index < d->m_groupCount - 1
             ? d->m_groups[index + 1]
-            : 0;
+            : nullptr;
 }
 
 /*!
@@ -661,7 +661,7 @@ QQmlListProperty<QQmlDelegateModelGroup> QQmlDelegateModel::groups()
             QQmlDelegateModelPrivate::group_append,
             QQmlDelegateModelPrivate::group_count,
             QQmlDelegateModelPrivate::group_at,
-            0);
+            nullptr);
 }
 
 /*!
@@ -839,11 +839,11 @@ void QQDMIncubationTask::statusChanged(Status status)
         Q_ASSERT(incubating);
         // The model was deleted from under our feet, cleanup ourselves
         delete incubating->object;
-        incubating->object = 0;
+        incubating->object = nullptr;
         if (incubating->contextData) {
             incubating->contextData->invalidate();
             Q_ASSERT(incubating->contextData->refCount == 1);
-            incubating->contextData = 0;
+            incubating->contextData = nullptr;
         }
         incubating->scriptRef = 0;
         incubating->deleteLater();
@@ -879,8 +879,8 @@ void QQmlDelegateModelPrivate::incubatorStatusChanged(QQDMIncubationTask *incuba
         return;
 
     QQmlDelegateModelItem *cacheItem = incubationTask->incubating;
-    cacheItem->incubationTask = 0;
-    incubationTask->incubating = 0;
+    cacheItem->incubationTask = nullptr;
+    incubationTask->incubating = nullptr;
     releaseIncubator(incubationTask);
 
     if (status == QQmlIncubator::Ready) {
@@ -900,13 +900,13 @@ void QQmlDelegateModelPrivate::incubatorStatusChanged(QQDMIncubationTask *incuba
         else
             emitDestroyingItem(cacheItem->object);
         delete cacheItem->object;
-        cacheItem->object = 0;
+        cacheItem->object = nullptr;
         cacheItem->scriptRef -= 1;
         if (cacheItem->contextData) {
             cacheItem->contextData->invalidate();
             Q_ASSERT(cacheItem->contextData->refCount == 1);
         }
-        cacheItem->contextData = 0;
+        cacheItem->contextData = nullptr;
 
         if (!cacheItem->isReferenced()) {
             removeCacheItem(cacheItem);
@@ -935,9 +935,9 @@ QObject *QQmlDelegateModelPrivate::object(Compositor::Group group, int index, QQ
 {
     if (!m_delegate || index < 0 || index >= m_compositor.count(group)) {
         qWarning() << "DelegateModel::item: index out range" << index << m_compositor.count(group);
-        return 0;
+        return nullptr;
     } else if (!m_context || !m_context->isValid()) {
-        return 0;
+        return nullptr;
     }
 
     Compositor::iterator it = m_compositor.find(group, index);
@@ -947,7 +947,7 @@ QObject *QQmlDelegateModelPrivate::object(Compositor::Group group, int index, QQ
     if (!cacheItem) {
         cacheItem = m_adaptorModel.createItem(m_cacheMetaType, it.modelIndex());
         if (!cacheItem)
-            return 0;
+            return nullptr;
 
         cacheItem->groups = it->flags;
 
@@ -1016,7 +1016,7 @@ QObject *QQmlDelegateModelPrivate::object(Compositor::Group group, int index, QQ
         delete cacheItem;
     }
 
-    return 0;
+    return nullptr;
 }
 
 /*
@@ -1032,7 +1032,7 @@ QObject *QQmlDelegateModel::object(int index, QQmlIncubator::IncubationMode incu
     Q_D(QQmlDelegateModel);
     if (!d->m_delegate || index < 0 || index >= d->m_compositor.count(d->m_compositorGroup)) {
         qWarning() << "DelegateModel::item: index out range" << index << d->m_compositor.count(d->m_compositorGroup);
-        return 0;
+        return nullptr;
     }
 
     return d->object(d->m_compositorGroup, index, incubationMode);
@@ -1347,7 +1347,7 @@ void QQmlDelegateModelPrivate::itemsRemoved(
                     if (QQDMIncubationTask *incubationTask = cacheItem->incubationTask) {
                         if (!cacheItem->isObjectReferenced()) {
                             releaseIncubator(cacheItem->incubationTask);
-                            cacheItem->incubationTask = 0;
+                            cacheItem->incubationTask = nullptr;
                             if (cacheItem->object) {
                                 QObject *object = cacheItem->object;
                                 cacheItem->destroyObject();
@@ -1668,7 +1668,7 @@ bool QQmlDelegateModelPrivate::insert(Compositor::insert_iterator &before, const
     // Must be before the new object is inserted into the cache or its indexes will be adjusted too.
     itemsInserted(QVector<Compositor::Insert>(1, Compositor::Insert(before, 1, cacheItem->groups & ~Compositor::CacheFlag)));
 
-    before = m_compositor.insert(before, 0, 0, 1, cacheItem->groups);
+    before = m_compositor.insert(before, nullptr, 0, 1, cacheItem->groups);
     m_cache.insert(before.cacheIndex, cacheItem);
 
     return true;
@@ -1681,7 +1681,7 @@ QQmlDelegateModelItemMetaType::QQmlDelegateModelItemMetaType(
     : model(model)
     , groupCount(groupNames.count() + 1)
     , v4Engine(engine)
-    , metaObject(0)
+    , metaObject(nullptr)
     , groupNames(groupNames)
 {
 }
@@ -1724,7 +1724,7 @@ void QQmlDelegateModelItemMetaType::initializePrototype()
     QV4::Scope scope(v4Engine);
 
     QV4::ScopedObject proto(scope, v4Engine->newObject());
-    proto->defineAccessorProperty(QStringLiteral("model"), QQmlDelegateModelItem::get_model, 0);
+    proto->defineAccessorProperty(QStringLiteral("model"), QQmlDelegateModelItem::get_model, nullptr);
     proto->defineAccessorProperty(QStringLiteral("groups"), QQmlDelegateModelItem::get_groups, QQmlDelegateModelItem::set_groups);
     QV4::ScopedString s(scope);
     QV4::ScopedProperty p(scope);
@@ -1733,7 +1733,7 @@ void QQmlDelegateModelItemMetaType::initializePrototype()
     QV4::ScopedFunctionObject f(scope);
     QV4::ExecutionContext *global = scope.engine->rootContext();
     p->setGetter((f = QV4::DelegateModelGroupFunction::create(global, 30, QQmlDelegateModelItem::get_member)));
-    p->setSetter(0);
+    p->setSetter(nullptr);
     proto->insertMember(s, p, QV4::Attr_Accessor|QV4::Attr_NotConfigurable|QV4::Attr_NotEnumerable);
 
     s = v4Engine->newString(QStringLiteral("inItems"));
@@ -1752,7 +1752,7 @@ void QQmlDelegateModelItemMetaType::initializePrototype()
 
     s = v4Engine->newString(QStringLiteral("persistedItemsIndex"));
     p->setGetter((f = QV4::DelegateModelGroupFunction::create(global, QQmlListCompositor::Persisted, QQmlDelegateModelItem::get_index)));
-    p->setSetter(0);
+    p->setSetter(nullptr);
     proto->insertMember(s, p, QV4::Attr_Accessor|QV4::Attr_NotConfigurable|QV4::Attr_NotEnumerable);
 
     for (int i = 2; i < groupNames.count(); ++i) {
@@ -1767,7 +1767,7 @@ void QQmlDelegateModelItemMetaType::initializePrototype()
         const QString propertyName = groupNames.at(i) + QLatin1String("Index");
         s = v4Engine->newString(propertyName);
         p->setGetter((f = QV4::DelegateModelGroupFunction::create(global, i + 1, QQmlDelegateModelItem::get_index)));
-        p->setSetter(0);
+        p->setSetter(nullptr);
         proto->insertMember(s, p, QV4::Attr_Accessor|QV4::Attr_NotConfigurable|QV4::Attr_NotEnumerable);
     }
     modelItemProto.set(v4Engine, proto);
@@ -1909,10 +1909,10 @@ QQmlDelegateModelItem::QQmlDelegateModelItem(
         QQmlDelegateModelItemMetaType *metaType, int modelIndex)
     : v4(metaType->v4Engine)
     , metaType(metaType)
-    , contextData(0)
-    , object(0)
-    , attached(0)
-    , incubationTask(0)
+    , contextData(nullptr)
+    , object(nullptr)
+    , attached(nullptr)
+    , incubationTask(nullptr)
     , objectRef(0)
     , scriptRef(0)
     , groups(0)
@@ -1962,39 +1962,39 @@ void QQmlDelegateModelItem::destroyObject()
         data->ownContext->clearContext();
         if (data->ownContext->contextObject == object)
             data->ownContext->contextObject = nullptr;
-        data->ownContext = 0;
-        data->context = 0;
+        data->ownContext = nullptr;
+        data->context = nullptr;
     }
     object->deleteLater();
 
     if (attached) {
-        attached->m_cacheItem = 0;
-        attached = 0;
+        attached->m_cacheItem = nullptr;
+        attached = nullptr;
     }
 
     contextData->invalidate();
-    contextData = 0;
-    object = 0;
+    contextData = nullptr;
+    object = nullptr;
 }
 
 QQmlDelegateModelItem *QQmlDelegateModelItem::dataForObject(QObject *object)
 {
     QQmlData *d = QQmlData::get(object);
-    QQmlContextData *context = d ? d->context : 0;
-    for (context = context ? context->parent : 0; context; context = context->parent) {
+    QQmlContextData *context = d ? d->context : nullptr;
+    for (context = context ? context->parent : nullptr; context; context = context->parent) {
         if (QQmlDelegateModelItem *cacheItem = qobject_cast<QQmlDelegateModelItem *>(
                 context->contextObject)) {
             return cacheItem;
         }
     }
-    return 0;
+    return nullptr;
 }
 
 int QQmlDelegateModelItem::groupIndex(Compositor::Group group)
 {
     if (QQmlDelegateModelPrivate * const model = metaType->model
             ? QQmlDelegateModelPrivate::get(metaType->model)
-            : 0) {
+            : nullptr) {
         return model->m_compositor.find(Compositor::Cache, model->m_cache.indexOf(this)).index[group];
     }
     return -1;
@@ -2067,7 +2067,7 @@ int QQmlDelegateModelAttachedMetaObject::metaCall(QObject *object, QMetaObject::
 }
 
 QQmlDelegateModelAttached::QQmlDelegateModelAttached(QObject *parent)
-    : m_cacheItem(0)
+    : m_cacheItem(nullptr)
     , m_previousGroups(0)
 {
     QQml_setParent_noEvent(this, parent);
@@ -2107,7 +2107,7 @@ QQmlDelegateModelAttached::QQmlDelegateModelAttached(
 
 QQmlDelegateModel *QQmlDelegateModelAttached::model() const
 {
-    return m_cacheItem ? m_cacheItem->metaType->model : 0;
+    return m_cacheItem ? m_cacheItem->metaType->model : nullptr;
 }
 
 /*!
@@ -2219,11 +2219,11 @@ void QQmlDelegateModelAttached::emitChanges()
     const QMetaObject *meta = metaObject();
     for (int i = 1; i < m_cacheItem->metaType->groupCount; ++i, ++notifierId) {
         if (groupChanges & (1 << i))
-            QMetaObject::activate(this, meta, notifierId, 0);
+            QMetaObject::activate(this, meta, notifierId, nullptr);
     }
     for (int i = 1; i < m_cacheItem->metaType->groupCount; ++i, ++notifierId) {
         if (indexChanges & (1 << i))
-            QMetaObject::activate(this, meta, notifierId, 0);
+            QMetaObject::activate(this, meta, notifierId, nullptr);
     }
 
     if (groupChanges)
@@ -2508,7 +2508,7 @@ bool QQmlDelegateModelGroupPrivate::parseIndex(const QV4::Value &value, int *ind
         QQmlDelegateModelItem * const cacheItem = object->d()->item;
         if (QQmlDelegateModelPrivate *model = cacheItem->metaType->model
                 ? QQmlDelegateModelPrivate::get(cacheItem->metaType->model)
-                : 0) {
+                : nullptr) {
             *index = model->m_cache.indexOf(cacheItem);
             *group = Compositor::Cache;
             return true;
@@ -3133,7 +3133,7 @@ QObject *QQmlPartsModel::object(int index, QQmlIncubator::IncubationMode incubat
 
     if (!model->m_delegate || index < 0 || index >= model->m_compositor.count(m_compositorGroup)) {
         qWarning() << "DelegateModel::item: index out range" << index << model->m_compositor.count(m_compositorGroup);
-        return 0;
+        return nullptr;
     }
 
     QObject *object = model->object(m_compositorGroup, index, incubationMode);
@@ -3141,7 +3141,7 @@ QObject *QQmlPartsModel::object(int index, QQmlIncubator::IncubationMode incubat
     if (QQuickPackage *package = qmlobject_cast<QQuickPackage *>(object)) {
         QObject *part = package->part(m_part);
         if (!part)
-            return 0;
+            return nullptr;
         m_packaged.insertMulti(part, package);
         return part;
     }
@@ -3153,12 +3153,12 @@ QObject *QQmlPartsModel::object(int index, QQmlIncubator::IncubationMode incubat
         model->m_delegateValidated = true;
     }
 
-    return 0;
+    return nullptr;
 }
 
 QQmlInstanceModel::ReleaseFlags QQmlPartsModel::release(QObject *item)
 {
-    QQmlInstanceModel::ReleaseFlags flags = 0;
+    QQmlInstanceModel::ReleaseFlags flags = nullptr;
 
     QHash<QObject *, QQuickPackage *>::iterator it = m_packaged.find(item);
     if (it != m_packaged.end()) {
@@ -3336,9 +3336,9 @@ QQmlDelegateModelEngineData::QQmlDelegateModelEngineData(QV4::ExecutionEngine *v
     QV4::Scope scope(v4);
 
     QV4::ScopedObject proto(scope, v4->newObject());
-    proto->defineAccessorProperty(QStringLiteral("index"), QQmlDelegateModelGroupChange::method_get_index, 0);
-    proto->defineAccessorProperty(QStringLiteral("count"), QQmlDelegateModelGroupChange::method_get_count, 0);
-    proto->defineAccessorProperty(QStringLiteral("moveId"), QQmlDelegateModelGroupChange::method_get_moveId, 0);
+    proto->defineAccessorProperty(QStringLiteral("index"), QQmlDelegateModelGroupChange::method_get_index, nullptr);
+    proto->defineAccessorProperty(QStringLiteral("count"), QQmlDelegateModelGroupChange::method_get_count, nullptr);
+    proto->defineAccessorProperty(QStringLiteral("moveId"), QQmlDelegateModelGroupChange::method_get_moveId, nullptr);
     changeProto.set(v4, proto);
 }
 
diff --git a/src/qml/types/qqmldelegatemodel_p.h b/src/qml/types/qqmldelegatemodel_p.h
index 71179fd8be..b894df8f82 100644
--- a/src/qml/types/qqmldelegatemodel_p.h
+++ b/src/qml/types/qqmldelegatemodel_p.h
@@ -90,7 +90,7 @@ class Q_QML_PRIVATE_EXPORT QQmlDelegateModel : public QQmlInstanceModel, public
     Q_INTERFACES(QQmlParserStatus)
 public:
     QQmlDelegateModel();
-    QQmlDelegateModel(QQmlContext *, QObject *parent=0);
+    QQmlDelegateModel(QQmlContext *, QObject *parent=nullptr);
     ~QQmlDelegateModel();
 
     void classBegin() override;
@@ -109,7 +109,7 @@ public:
     Q_INVOKABLE QVariant parentModelIndex() const;
 
     int count() const override;
-    bool isValid() const override { return delegate() != 0; }
+    bool isValid() const override { return delegate() != nullptr; }
     QObject *object(int index, QQmlIncubator::IncubationMode incubationMode = QQmlIncubator::AsynchronousIfNested) override;
     ReleaseFlags release(QObject *object) override;
     void cancel(int index) override;
@@ -164,8 +164,8 @@ class Q_QML_PRIVATE_EXPORT QQmlDelegateModelGroup : public QObject
     Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
     Q_PROPERTY(bool includeByDefault READ defaultInclude WRITE setDefaultInclude NOTIFY defaultIncludeChanged)
 public:
-    QQmlDelegateModelGroup(QObject *parent = 0);
-    QQmlDelegateModelGroup(const QString &name, QQmlDelegateModel *model, int compositorType, QObject *parent = 0);
+    QQmlDelegateModelGroup(QObject *parent = nullptr);
+    QQmlDelegateModelGroup(const QString &name, QQmlDelegateModel *model, int compositorType, QObject *parent = nullptr);
     ~QQmlDelegateModelGroup();
 
     QString name() const;
diff --git a/src/qml/types/qqmldelegatemodel_p_p.h b/src/qml/types/qqmldelegatemodel_p_p.h
index 7b60bcddc0..68b987a5fa 100644
--- a/src/qml/types/qqmldelegatemodel_p_p.h
+++ b/src/qml/types/qqmldelegatemodel_p_p.h
@@ -182,7 +182,7 @@ class QQDMIncubationTask : public QQmlIncubator
 public:
     QQDMIncubationTask(QQmlDelegateModelPrivate *l, IncubationMode mode)
         : QQmlIncubator(mode)
-        , incubating(0)
+        , incubating(nullptr)
         , vdm(l) {}
 
     void statusChanged(Status) override;
@@ -278,12 +278,12 @@ public:
     void itemsInserted(
             const QVector<Compositor::Insert> &inserts,
             QVarLengthArray<QVector<QQmlChangeSet::Change>, Compositor::MaximumGroupCount> *translatedInserts,
-            QHash<int, QList<QQmlDelegateModelItem *> > *movedItems = 0);
+            QHash<int, QList<QQmlDelegateModelItem *> > *movedItems = nullptr);
     void itemsInserted(const QVector<Compositor::Insert> &inserts);
     void itemsRemoved(
             const QVector<Compositor::Remove> &removes,
             QVarLengthArray<QVector<QQmlChangeSet::Change>, Compositor::MaximumGroupCount> *translatedRemoves,
-            QHash<int, QList<QQmlDelegateModelItem *> > *movedItems = 0);
+            QHash<int, QList<QQmlDelegateModelItem *> > *movedItems = nullptr);
     void itemsRemoved(const QVector<Compositor::Remove> &removes);
     void itemsMoved(
             const QVector<Compositor::Remove> &removes, const QVector<Compositor::Insert> &inserts);
@@ -341,7 +341,7 @@ class QQmlPartsModel : public QQmlInstanceModel, public QQmlDelegateModelGroupEm
     Q_OBJECT
     Q_PROPERTY(QString filterOnGroup READ filterGroup WRITE setFilterGroup NOTIFY filterGroupChanged RESET resetFilterGroup)
 public:
-    QQmlPartsModel(QQmlDelegateModel *model, const QString &part, QObject *parent = 0);
+    QQmlPartsModel(QQmlDelegateModel *model, const QString &part, QObject *parent = nullptr);
     ~QQmlPartsModel();
 
     QString filterGroup() const;
diff --git a/src/qml/types/qqmlinstantiator.cpp b/src/qml/types/qqmlinstantiator.cpp
index 6e2b66aea7..213bef7879 100644
--- a/src/qml/types/qqmlinstantiator.cpp
+++ b/src/qml/types/qqmlinstantiator.cpp
@@ -56,8 +56,8 @@ QQmlInstantiatorPrivate::QQmlInstantiatorPrivate()
     , ownModel(false)
     , requestedIndex(-1)
     , model(QVariant(1))
-    , instanceModel(0)
-    , delegate(0)
+    , instanceModel(nullptr)
+    , delegate(nullptr)
 {
 }
 
@@ -183,7 +183,7 @@ void QQmlInstantiatorPrivate::_q_modelUpdated(const QQmlChangeSet &changeSet, bo
             objects = objects.mid(0, index) + movedObjects + objects.mid(index);
         } else {
             if (insert.index <= objects.size())
-                objects.insert(insert.index, insert.count, 0);
+                objects.insert(insert.index, insert.count, nullptr);
             for (int i = 0; i < insert.count; ++i) {
                 int modelIndex = index + i;
                 QObject* obj = modelObject(modelIndex, async);
@@ -396,11 +396,11 @@ void QQmlInstantiator::setModel(const QVariant &v)
 
     QQmlInstanceModel *prevModel = d->instanceModel;
     QObject *object = qvariant_cast<QObject*>(v);
-    QQmlInstanceModel *vim = 0;
+    QQmlInstanceModel *vim = nullptr;
     if (object && (vim = qobject_cast<QQmlInstanceModel *>(object))) {
         if (d->ownModel) {
             delete d->instanceModel;
-            prevModel = 0;
+            prevModel = nullptr;
             d->ownModel = false;
         }
         d->instanceModel = vim;
@@ -444,7 +444,7 @@ QObject *QQmlInstantiator::object() const
     Q_D(const QQmlInstantiator);
     if (d->objects.count())
         return d->objects[0];
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -457,7 +457,7 @@ QObject *QQmlInstantiator::objectAt(int index) const
     Q_D(const QQmlInstantiator);
     if (index >= 0 && index < d->objects.count())
         return d->objects[index];
-    return 0;
+    return nullptr;
 }
 
 /*!
diff --git a/src/qml/types/qqmlinstantiator_p.h b/src/qml/types/qqmlinstantiator_p.h
index ee18daa48c..5727c4d1e1 100644
--- a/src/qml/types/qqmlinstantiator_p.h
+++ b/src/qml/types/qqmlinstantiator_p.h
@@ -71,7 +71,7 @@ class Q_AUTOTEST_EXPORT QQmlInstantiator : public QObject, public QQmlParserStat
     Q_CLASSINFO("DefaultProperty", "delegate")
 
 public:
-    QQmlInstantiator(QObject *parent = 0);
+    QQmlInstantiator(QObject *parent = nullptr);
     ~QQmlInstantiator();
 
     bool isActive() const;
diff --git a/src/qml/types/qqmllistmodel.cpp b/src/qml/types/qqmllistmodel.cpp
index 784368c504..d4fc02cd3e 100644
--- a/src/qml/types/qqmllistmodel.cpp
+++ b/src/qml/types/qqmllistmodel.cpp
@@ -100,7 +100,7 @@ const ListLayout::Role &ListLayout::getRoleOrCreate(const QString &key, Role::Da
     if (node) {
         const Role &r = *node->value;
         if (type != r.type)
-            qmlWarning(0) << QStringLiteral("Can't assign to existing role '%1' of different type [%2 -> %3]").arg(r.name).arg(roleTypeName(type)).arg(roleTypeName(r.type));
+            qmlWarning(nullptr) << QStringLiteral("Can't assign to existing role '%1' of different type [%2 -> %3]").arg(r.name).arg(roleTypeName(type)).arg(roleTypeName(r.type));
         return r;
     }
 
@@ -113,7 +113,7 @@ const ListLayout::Role &ListLayout::getRoleOrCreate(QV4::String *key, Role::Data
     if (node) {
         const Role &r = *node->value;
         if (type != r.type)
-            qmlWarning(0) << QStringLiteral("Can't assign to existing role '%1' of different type [%2 -> %3]").arg(r.name).arg(roleTypeName(type)).arg(roleTypeName(r.type));
+            qmlWarning(nullptr) << QStringLiteral("Can't assign to existing role '%1' of different type [%2 -> %3]").arg(r.name).arg(roleTypeName(type)).arg(roleTypeName(r.type));
         return r;
     }
 
@@ -134,7 +134,7 @@ const ListLayout::Role &ListLayout::createRole(const QString &key, ListLayout::R
     if (type == Role::List) {
         r->subLayout = new ListLayout;
     } else {
-        r->subLayout = 0;
+        r->subLayout = nullptr;
     }
 
     int dataSize = dataSizes[type];
@@ -203,7 +203,7 @@ ListLayout::Role::Role(const Role *other)
     if (other->subLayout)
         subLayout = new ListLayout(other->subLayout);
     else
-        subLayout = 0;
+        subLayout = nullptr;
 }
 
 ListLayout::Role::~Role()
@@ -236,8 +236,8 @@ const ListLayout::Role *ListLayout::getRoleOrCreate(const QString &key, const QV
     }
 
     if (type == Role::Invalid) {
-        qmlWarning(0) << "Can't create role for unsupported data type";
-        return 0;
+        qmlWarning(nullptr) << "Can't create role for unsupported data type";
+        return nullptr;
     }
 
     return &getRoleOrCreate(key, type);
@@ -245,7 +245,7 @@ const ListLayout::Role *ListLayout::getRoleOrCreate(const QString &key, const QV
 
 const ListLayout::Role *ListLayout::getExistingRole(const QString &key) const
 {
-    Role *r = 0;
+    Role *r = nullptr;
     QStringHash<Role *>::Node *node = roleHash.findNode(key);
     if (node)
         r = node->value;
@@ -254,7 +254,7 @@ const ListLayout::Role *ListLayout::getExistingRole(const QString &key) const
 
 const ListLayout::Role *ListLayout::getExistingRole(QV4::String *key) const
 {
-    Role *r = 0;
+    Role *r = nullptr;
     QStringHash<Role *>::Node *node = roleHash.findNode(key);
     if (node)
         r = node->value;
@@ -264,7 +264,7 @@ const ListLayout::Role *ListLayout::getExistingRole(QV4::String *key) const
 QObject *ListModel::getOrCreateModelObject(QQmlListModel *model, int elementIndex)
 {
     ListElement *e = elements[elementIndex];
-    if (e->m_objectCache == 0) {
+    if (e->m_objectCache == nullptr) {
         void *memory = operator new(sizeof(QObject) + sizeof(QQmlData));
         void *ddataMemory = ((char *)memory) + sizeof(QObject);
         e->m_objectCache = new (memory) QObject;
@@ -404,10 +404,10 @@ void ListModel::destroy()
     for (const auto &destroyer : remove(0, elements.count()))
         destroyer();
 
-    m_layout = 0;
+    m_layout = nullptr;
     if (m_modelCache && m_modelCache->m_primary == false)
         delete m_modelCache;
-    m_modelCache = 0;
+    m_modelCache = nullptr;
 }
 
 int ListModel::appendElement()
@@ -508,7 +508,7 @@ void ListModel::set(int elementIndex, QV4::Object *object, QVector<int> *roles)
             roleIndex = e->setDoubleProperty(r, propertyValue->asDouble());
         } else if (QV4::ArrayObject *a = propertyValue->as<QV4::ArrayObject>()) {
             const ListLayout::Role &r = m_layout->getRoleOrCreate(propertyName, ListLayout::Role::List);
-            ListModel *subModel = new ListModel(r.subLayout, 0);
+            ListModel *subModel = new ListModel(r.subLayout, nullptr);
 
             int arrayLength = a->getLength();
             for (int j=0 ; j < arrayLength ; ++j) {
@@ -589,7 +589,7 @@ void ListModel::set(int elementIndex, QV4::Object *object)
         } else if (QV4::ArrayObject *a = propertyValue->as<QV4::ArrayObject>()) {
             const ListLayout::Role &r = m_layout->getRoleOrCreate(propertyName, ListLayout::Role::List);
             if (r.type == ListLayout::Role::List) {
-                ListModel *subModel = new ListModel(r.subLayout, 0);
+                ListModel *subModel = new ListModel(r.subLayout, nullptr);
 
                 int arrayLength = a->getLength();
                 for (int j=0 ; j < arrayLength ; ++j) {
@@ -698,7 +698,7 @@ inline char *ListElement::getPropertyMemory(const ListLayout::Role &role)
     ListElement *e = this;
     int blockIndex = 0;
     while (blockIndex < role.blockIndex) {
-        if (e->next == 0) {
+        if (e->next == nullptr) {
             e->next = new ListElement;
             e->next->uid = uid;
         }
@@ -713,7 +713,7 @@ inline char *ListElement::getPropertyMemory(const ListLayout::Role &role)
 ModelNodeMetaObject *ListElement::objectCache()
 {
     if (!m_objectCache)
-        return 0;
+        return nullptr;
     return ModelNodeMetaObject::get(m_objectCache);
 }
 
@@ -721,7 +721,7 @@ QString *ListElement::getStringProperty(const ListLayout::Role &role)
 {
     char *mem = getPropertyMemory(role);
     QString *s = reinterpret_cast<QString *>(mem);
-    return s->data_ptr() ? s : 0;
+    return s->data_ptr() ? s : nullptr;
 }
 
 QObject *ListElement::getQObjectProperty(const ListLayout::Role &role)
@@ -733,7 +733,7 @@ QObject *ListElement::getQObjectProperty(const ListLayout::Role &role)
 
 QVariantMap *ListElement::getVariantMapProperty(const ListLayout::Role &role)
 {
-    QVariantMap *map = 0;
+    QVariantMap *map = nullptr;
 
     char *mem = getPropertyMemory(role);
     if (isMemoryUsed<QVariantMap>(mem))
@@ -744,7 +744,7 @@ QVariantMap *ListElement::getVariantMapProperty(const ListLayout::Role &role)
 
 QDateTime *ListElement::getDateTimeProperty(const ListLayout::Role &role)
 {
-    QDateTime *dt = 0;
+    QDateTime *dt = nullptr;
 
     char *mem = getPropertyMemory(role);
     if (isMemoryUsed<QDateTime>(mem))
@@ -755,7 +755,7 @@ QDateTime *ListElement::getDateTimeProperty(const ListLayout::Role &role)
 
 QJSValue *ListElement::getFunctionProperty(const ListLayout::Role &role)
 {
-    QJSValue *f = 0;
+    QJSValue *f = nullptr;
 
     char *mem = getPropertyMemory(role);
     if (isMemoryUsed<QJSValue>(mem))
@@ -776,7 +776,7 @@ QPointer<QObject> *ListElement::getGuardProperty(const ListLayout::Role &role)
         }
     }
 
-    QPointer<QObject> *o = 0;
+    QPointer<QObject> *o = nullptr;
 
     if (existingGuard)
         o = reinterpret_cast<QPointer<QObject> *>(mem);
@@ -807,7 +807,7 @@ QVariant ListElement::getProperty(const ListLayout::Role &role, const QQmlListMo
         case ListLayout::Role::String:
             {
                 QString *value = reinterpret_cast<QString *>(mem);
-                if (value->data_ptr() != 0)
+                if (value->data_ptr() != nullptr)
                     data = *value;
             }
             break;
@@ -823,7 +823,7 @@ QVariant ListElement::getProperty(const ListLayout::Role &role, const QQmlListMo
                 ListModel *model = *value;
 
                 if (model) {
-                    if (model->m_modelCache == 0) {
+                    if (model->m_modelCache == nullptr) {
                         model->m_modelCache = new QQmlListModel(owner, model, eng);
                         QQmlEngine::setContextForObject(model->m_modelCache, QQmlEngine::contextForObject(owner));
                     }
@@ -880,7 +880,7 @@ int ListElement::setStringProperty(const ListLayout::Role &role, const QString &
         char *mem = getPropertyMemory(role);
         QString *c = reinterpret_cast<QString *>(mem);
         bool changed;
-        if (c->data_ptr() == 0) {
+        if (c->data_ptr() == nullptr) {
             new (mem) QString(s);
             changed = true;
         } else {
@@ -1114,16 +1114,16 @@ void ListElement::clearProperty(const ListLayout::Role &role)
         setBoolProperty(role, false);
         break;
     case ListLayout::Role::List:
-        setListProperty(role, 0);
+        setListProperty(role, nullptr);
         break;
     case ListLayout::Role::QObject:
-        setQObjectProperty(role, 0);
+        setQObjectProperty(role, nullptr);
         break;
     case ListLayout::Role::DateTime:
         setDateTimeProperty(role, QDateTime());
         break;
     case ListLayout::Role::VariantMap:
-        setVariantMapProperty(role, (QVariantMap *)0);
+        setVariantMapProperty(role, (QVariantMap *)nullptr);
         break;
     case ListLayout::Role::Function:
         setFunctionProperty(role, QJSValue());
@@ -1135,17 +1135,17 @@ void ListElement::clearProperty(const ListLayout::Role &role)
 
 ListElement::ListElement()
 {
-    m_objectCache = 0;
+    m_objectCache = nullptr;
     uid = uidCounter.fetchAndAddOrdered(1);
-    next = 0;
+    next = nullptr;
     memset(data, 0, sizeof(data));
 }
 
 ListElement::ListElement(int existingUid)
 {
-    m_objectCache = 0;
+    m_objectCache = nullptr;
     uid = existingUid;
-    next = 0;
+    next = nullptr;
     memset(data, 0, sizeof(data));
 }
 
@@ -1169,8 +1169,8 @@ QVector<int> ListElement::sync(ListElement *src, ListLayout *srcLayout, ListElem
                     ListModel *targetSubModel = target->getListProperty(targetRole);
 
                     if (srcSubModel) {
-                        if (targetSubModel == 0) {
-                            targetSubModel = new ListModel(targetRole.subLayout, 0);
+                        if (targetSubModel == nullptr) {
+                            targetSubModel = new ListModel(targetRole.subLayout, nullptr);
                             target->setListPropertyFast(targetRole, targetSubModel);
                         }
                         if (ListModel::sync(srcSubModel, targetSubModel))
@@ -1190,7 +1190,7 @@ QVector<int> ListElement::sync(ListElement *src, ListLayout *srcLayout, ListElem
             case ListLayout::Role::DateTime:
             case ListLayout::Role::Function:
                 {
-                    QVariant v = src->getProperty(srcRole, 0, 0);
+                    QVariant v = src->getProperty(srcRole, nullptr, nullptr);
                     roleIndex = target->setVariantProperty(targetRole, v);
                 }
                 break;
@@ -1271,7 +1271,7 @@ void ListElement::destroy(ListLayout *layout)
     }
 
     if (next)
-        next->destroy(0);
+        next->destroy(nullptr);
     uid = -1;
 }
 
@@ -1329,7 +1329,7 @@ int ListElement::setJsProperty(const ListLayout::Role &role, const QV4::Value &d
             QV4::Scope scope(a->engine());
             QV4::ScopedObject o(scope);
 
-            ListModel *subModel = new ListModel(role.subLayout, 0);
+            ListModel *subModel = new ListModel(role.subLayout, nullptr);
             int arrayLength = a->getLength();
             for (int j=0 ; j < arrayLength ; ++j) {
                 o = a->getIndexed(j);
@@ -1337,7 +1337,7 @@ int ListElement::setJsProperty(const ListLayout::Role &role, const QV4::Value &d
             }
             roleIndex = setListProperty(role, subModel);
         } else {
-            qmlWarning(0) << QStringLiteral("Can't assign to existing role '%1' of different type [%2 -> %3]").arg(role.name).arg(roleTypeName(role.type)).arg(roleTypeName(ListLayout::Role::List));
+            qmlWarning(nullptr) << QStringLiteral("Can't assign to existing role '%1' of different type [%2 -> %3]").arg(role.name).arg(roleTypeName(role.type)).arg(roleTypeName(ListLayout::Role::List));
         }
     } else if (d.isBoolean()) {
         roleIndex = setBoolProperty(role, d.booleanValue());
@@ -1516,7 +1516,7 @@ void ModelObject::advanceIterator(Managed *m, ObjectIterator *it, Value *name, u
 {
     ModelObject *that = static_cast<ModelObject*>(m);
     ExecutionEngine *v4 = that->engine();
-    name->setM(0);
+    name->setM(nullptr);
     *index = UINT_MAX;
     if (it->arrayIndex < uint(that->d()->m_model->m_listModel->roleCount())) {
         Scope scope(that->engine());
@@ -1564,7 +1564,7 @@ QVector<int> DynamicRoleModelNode::sync(DynamicRoleModelNode *src, DynamicRoleMo
 
         bool modelHasChanges = false;
         if (srcModel) {
-            if (targetModel == 0)
+            if (targetModel == nullptr)
                 targetModel = QQmlListModel::createWithOwner(target->m_owner);
 
             modelHasChanges = QQmlListModel::sync(srcModel, targetModel);
@@ -1787,13 +1787,13 @@ QQmlListModel::QQmlListModel(QObject *parent)
 {
     m_mainThread = true;
     m_primary = true;
-    m_agent = 0;
+    m_agent = nullptr;
     m_dynamicRoles = false;
 
     m_layout = new ListLayout;
     m_listModel = new ListModel(m_layout, this);
 
-    m_engine = 0;
+    m_engine = nullptr;
 }
 
 QQmlListModel::QQmlListModel(const QQmlListModel *owner, ListModel *data, QV4::ExecutionEngine *engine, QObject *parent)
@@ -1805,7 +1805,7 @@ QQmlListModel::QQmlListModel(const QQmlListModel *owner, ListModel *data, QV4::E
 
     Q_ASSERT(owner->m_dynamicRoles == false);
     m_dynamicRoles = false;
-    m_layout = 0;
+    m_layout = nullptr;
     m_listModel = data;
 
     m_engine = engine;
@@ -1827,7 +1827,7 @@ QQmlListModel::QQmlListModel(QQmlListModel *orig, QQmlListModelWorkerAgent *agen
     else
         ListModel::sync(orig->m_listModel, m_listModel);
 
-    m_engine = 0;
+    m_engine = nullptr;
 }
 
 QQmlListModel::~QQmlListModel()
@@ -1844,10 +1844,10 @@ QQmlListModel::~QQmlListModel()
         }
     }
 
-    m_listModel = 0;
+    m_listModel = nullptr;
 
     delete m_layout;
-    m_layout = 0;
+    m_layout = nullptr;
 }
 
 QQmlListModel *QQmlListModel::createWithOwner(QQmlListModel *newOwner)
@@ -1869,7 +1869,7 @@ QQmlListModel *QQmlListModel::createWithOwner(QQmlListModel *newOwner)
 
 QV4::ExecutionEngine *QQmlListModel::engine() const
 {
-    if (m_engine == 0) {
+    if (m_engine == nullptr) {
         m_engine  = qmlEngine(this)->handle();
     }
 
@@ -1939,7 +1939,7 @@ bool QQmlListModel::sync(QQmlListModel *src, QQmlListModel *target)
         ElementSync &s = elementHash.find(element->getUid()).value();
         Q_ASSERT(s.srcIndex >= 0);
         DynamicRoleModelNode *targetElement = s.target;
-        if (targetElement == 0) {
+        if (targetElement == nullptr) {
             targetElement = new DynamicRoleModelNode(target, element->getUid());
         }
         s.changedRoles = DynamicRoleModelNode::sync(element, targetElement);
@@ -2111,7 +2111,7 @@ QHash<int, QByteArray> QQmlListModel::roleNames() const
 */
 void QQmlListModel::setDynamicRoles(bool enableDynamicRoles)
 {
-    if (m_mainThread && m_agent == 0) {
+    if (m_mainThread && m_agent == nullptr) {
         if (enableDynamicRoles) {
             if (m_layout->roleCount())
                 qmlWarning(this) << tr("unable to enable dynamic roles as this model is not empty");
@@ -2605,15 +2605,15 @@ bool QQmlListModelParser::applyProperty(QV4::CompiledData::CompilationUnit *comp
         const quint32 targetObjectIndex = binding->value.objectIndex;
         const QV4::CompiledData::Object *target = qmlUnit->objectAt(targetObjectIndex);
 
-        ListModel *subModel = 0;
+        ListModel *subModel = nullptr;
         if (outterElementIndex == -1) {
             subModel = model;
         } else {
             const ListLayout::Role &role = model->getOrCreateListRole(elementName);
             if (role.type == ListLayout::Role::List) {
                 subModel = model->getListProperty(outterElementIndex, role);
-                if (subModel == 0) {
-                    subModel = new ListModel(role.subLayout, 0);
+                if (subModel == nullptr) {
+                    subModel = new ListModel(role.subLayout, nullptr);
                     QVariant vModel = QVariant::fromValue(subModel);
                     model->setOrCreateProperty(outterElementIndex, elementName, vModel);
                 }
@@ -2640,7 +2640,7 @@ bool QQmlListModelParser::applyProperty(QV4::CompiledData::CompilationUnit *comp
             QString scriptStr = binding->valueAsScriptString(qmlUnit);
             if (definesEmptyList(scriptStr)) {
                 const ListLayout::Role &role = model->getOrCreateListRole(elementName);
-                ListModel *emptyModel = new ListModel(role.subLayout, 0);
+                ListModel *emptyModel = new ListModel(role.subLayout, nullptr);
                 value = QVariant::fromValue(emptyModel);
             } else if (binding->isFunctionExpression()) {
                 QQmlBinding::Identifier id = binding->value.compiledScriptIndex;
diff --git a/src/qml/types/qqmllistmodel_p.h b/src/qml/types/qqmllistmodel_p.h
index cbb12caa20..0c0859dc80 100644
--- a/src/qml/types/qqmllistmodel_p.h
+++ b/src/qml/types/qqmllistmodel_p.h
@@ -82,7 +82,7 @@ class Q_QML_PRIVATE_EXPORT QQmlListModel : public QAbstractListModel
     Q_PROPERTY(bool dynamicRoles READ dynamicRoles WRITE setDynamicRoles)
 
 public:
-    QQmlListModel(QObject *parent=0);
+    QQmlListModel(QObject *parent=nullptr);
     ~QQmlListModel();
 
     QModelIndex index(int row, int column, const QModelIndex &parent) const override;
@@ -125,7 +125,7 @@ private:
 
     // Constructs a flat list model for a worker agent
     QQmlListModel(QQmlListModel *orig, QQmlListModelWorkerAgent *agent);
-    QQmlListModel(const QQmlListModel *owner, ListModel *data, QV4::ExecutionEngine *engine, QObject *parent=0);
+    QQmlListModel(const QQmlListModel *owner, ListModel *data, QV4::ExecutionEngine *engine, QObject *parent=nullptr);
 
     QV4::ExecutionEngine *engine() const;
 
diff --git a/src/qml/types/qqmllistmodelworkeragent.cpp b/src/qml/types/qqmllistmodelworkeragent.cpp
index a2750c926a..fe3eaa3198 100644
--- a/src/qml/types/qqmllistmodelworkeragent.cpp
+++ b/src/qml/types/qqmllistmodelworkeragent.cpp
@@ -86,7 +86,7 @@ void QQmlListModelWorkerAgent::release()
 
 void QQmlListModelWorkerAgent::modelDestroyed()
 {
-    m_orig = 0;
+    m_orig = nullptr;
 }
 
 int QQmlListModelWorkerAgent::count() const
diff --git a/src/qml/types/qqmllistmodelworkeragent_p.h b/src/qml/types/qqmllistmodelworkeragent_p.h
index 761a467e89..2120f25744 100644
--- a/src/qml/types/qqmllistmodelworkeragent_p.h
+++ b/src/qml/types/qqmllistmodelworkeragent_p.h
@@ -91,7 +91,7 @@ public:
 
     struct VariantRef
     {
-        VariantRef() : a(0) {}
+        VariantRef() : a(nullptr) {}
         VariantRef(const VariantRef &r) : a(r.a) { if (a) a->addref(); }
         VariantRef(QQmlListModelWorkerAgent *_a) : a(_a) { if (a) a->addref(); }
         ~VariantRef() { if (a) a->release(); }
diff --git a/src/qml/types/qqmlobjectmodel.cpp b/src/qml/types/qqmlobjectmodel.cpp
index 54da0867d4..08740b4a6f 100644
--- a/src/qml/types/qqmlobjectmodel.cpp
+++ b/src/qml/types/qqmlobjectmodel.cpp
@@ -287,7 +287,7 @@ QQmlInstanceModel::ReleaseFlags QQmlObjectModel::release(QObject *item)
         if (!d->children[idx].deref())
             return QQmlInstanceModel::Referenced;
     }
-    return 0;
+    return nullptr;
 }
 
 QString QQmlObjectModel::stringValue(int index, const QString &name)
@@ -337,7 +337,7 @@ QObject *QQmlObjectModel::get(int index) const
 {
     Q_D(const QQmlObjectModel);
     if (index < 0 || index >= d->children.count())
-        return 0;
+        return nullptr;
     return d->children.at(index).item;
 }
 
diff --git a/src/qml/types/qqmlobjectmodel_p.h b/src/qml/types/qqmlobjectmodel_p.h
index b3cf45ca62..267828dcdd 100644
--- a/src/qml/types/qqmlobjectmodel_p.h
+++ b/src/qml/types/qqmlobjectmodel_p.h
@@ -92,7 +92,7 @@ Q_SIGNALS:
     void destroyingItem(QObject *object);
 
 protected:
-    QQmlInstanceModel(QObjectPrivate &dd, QObject *parent = 0)
+    QQmlInstanceModel(QObjectPrivate &dd, QObject *parent = nullptr)
         : QObject(dd, parent) {}
 
 private:
@@ -110,7 +110,7 @@ class Q_QML_PRIVATE_EXPORT QQmlObjectModel : public QQmlInstanceModel
     Q_CLASSINFO("DefaultProperty", "children")
 
 public:
-    QQmlObjectModel(QObject *parent=0);
+    QQmlObjectModel(QObject *parent=nullptr);
     ~QQmlObjectModel() {}
 
     int count() const override;
diff --git a/src/qml/types/qqmltimer_p.h b/src/qml/types/qqmltimer_p.h
index 7739dad2a6..d597869994 100644
--- a/src/qml/types/qqmltimer_p.h
+++ b/src/qml/types/qqmltimer_p.h
@@ -72,7 +72,7 @@ class Q_QML_PRIVATE_EXPORT QQmlTimer : public QObject, public QQmlParserStatus
     Q_PROPERTY(QObject *parent READ parent CONSTANT)
 
 public:
-    QQmlTimer(QObject *parent=0);
+    QQmlTimer(QObject *parent=nullptr);
 
     void setInterval(int interval);
     int interval() const;
diff --git a/src/qml/types/qquickpackage.cpp b/src/qml/types/qquickpackage.cpp
index e0d1888f33..e8e897bab9 100644
--- a/src/qml/types/qquickpackage.cpp
+++ b/src/qml/types/qquickpackage.cpp
@@ -183,7 +183,7 @@ QObject *QQuickPackage::part(const QString &name)
     if (name == QLatin1String("default") && !d->dataList.isEmpty())
         return d->dataList.at(0);
 
-    return 0;
+    return nullptr;
 }
 
 QQuickPackageAttached *QQuickPackage::qmlAttachedProperties(QObject *o)
diff --git a/src/qml/types/qquickpackage_p.h b/src/qml/types/qquickpackage_p.h
index ca383bfdcb..122c7fcb30 100644
--- a/src/qml/types/qquickpackage_p.h
+++ b/src/qml/types/qquickpackage_p.h
@@ -66,7 +66,7 @@ class Q_AUTOTEST_EXPORT QQuickPackage : public QObject
     Q_PROPERTY(QQmlListProperty<QObject> data READ data)
 
 public:
-    QQuickPackage(QObject *parent=0);
+    QQuickPackage(QObject *parent=nullptr);
     virtual ~QQuickPackage();
 
     QQmlListProperty<QObject> data();
diff --git a/src/qml/types/qquickworkerscript.cpp b/src/qml/types/qquickworkerscript.cpp
index 32c0c86ff6..80c2d3a4bc 100644
--- a/src/qml/types/qquickworkerscript.cpp
+++ b/src/qml/types/qquickworkerscript.cpp
@@ -203,7 +203,7 @@ private:
 QQuickWorkerScriptEnginePrivate::WorkerEngine::WorkerEngine(QQuickWorkerScriptEnginePrivate *parent)
     : QV8Engine(nullptr, new QV4::ExecutionEngine), p(parent)
 #if QT_CONFIG(qml_network)
-, accessManager(0)
+, accessManager(nullptr)
 #endif
 {
     m_v4Engine->v8Engine = this;
@@ -290,7 +290,7 @@ QNetworkAccessManager *QQuickWorkerScriptEnginePrivate::WorkerEngine::networkAcc
 #endif
 
 QQuickWorkerScriptEnginePrivate::QQuickWorkerScriptEnginePrivate(QQmlEngine *engine)
-: workerEngine(0), qmlengine(engine), m_nextId(0)
+: workerEngine(nullptr), qmlengine(engine), m_nextId(0)
 {
 }
 
@@ -507,7 +507,7 @@ QQuickWorkerScriptEngine::~QQuickWorkerScriptEngine()
 }
 
 QQuickWorkerScriptEnginePrivate::WorkerScript::WorkerScript()
-: id(-1), initialized(false), owner(0)
+: id(-1), initialized(false), owner(nullptr)
 {
 }
 
@@ -534,7 +534,7 @@ void QQuickWorkerScriptEngine::removeWorkerScript(int id)
 {
     QQuickWorkerScriptEnginePrivate::WorkerScript* script = d->workers.value(id);
     if (script) {
-        script->owner = 0;
+        script->owner = nullptr;
         QCoreApplication::postEvent(d, new WorkerRemoveEvent(id));
     }
 }
@@ -565,7 +565,7 @@ void QQuickWorkerScriptEngine::run()
     qDeleteAll(d->workers);
     d->workers.clear();
 
-    delete d->workerEngine; d->workerEngine = 0;
+    delete d->workerEngine; d->workerEngine = nullptr;
 }
 
 
@@ -616,7 +616,7 @@ void QQuickWorkerScriptEngine::run()
         {Threaded ListModel Example}
 */
 QQuickWorkerScript::QQuickWorkerScript(QObject *parent)
-: QObject(parent), m_engine(0), m_scriptId(-1), m_componentComplete(true)
+: QObject(parent), m_engine(nullptr), m_scriptId(-1), m_componentComplete(true)
 {
 }
 
@@ -696,7 +696,7 @@ QQuickWorkerScriptEngine *QQuickWorkerScript::engine()
         QQmlEngine *engine = qmlEngine(this);
         if (!engine) {
             qWarning("QQuickWorkerScript: engine() called without qmlEngine() set");
-            return 0;
+            return nullptr;
         }
 
         m_engine = QQmlEnginePrivate::get(engine)->getWorkerScriptEngine();
@@ -707,7 +707,7 @@ QQuickWorkerScriptEngine *QQuickWorkerScript::engine()
 
         return m_engine;
     }
-    return 0;
+    return nullptr;
 }
 
 void QQuickWorkerScript::componentComplete()
diff --git a/src/qml/types/qquickworkerscript_p.h b/src/qml/types/qquickworkerscript_p.h
index 8ea630c685..1a8d2ab076 100644
--- a/src/qml/types/qquickworkerscript_p.h
+++ b/src/qml/types/qquickworkerscript_p.h
@@ -67,7 +67,7 @@ class QQuickWorkerScriptEngine : public QThread
 {
 Q_OBJECT
 public:
-    QQuickWorkerScriptEngine(QQmlEngine *parent = 0);
+    QQuickWorkerScriptEngine(QQmlEngine *parent = nullptr);
     ~QQuickWorkerScriptEngine();
 
     int registerWorkerScript(QQuickWorkerScript *);
@@ -91,7 +91,7 @@ class Q_AUTOTEST_EXPORT QQuickWorkerScript : public QObject, public QQmlParserSt
 
     Q_INTERFACES(QQmlParserStatus)
 public:
-    QQuickWorkerScript(QObject *parent = 0);
+    QQuickWorkerScript(QObject *parent = nullptr);
     ~QQuickWorkerScript();
 
     QUrl source() const;
diff --git a/src/qml/util/qqmladaptormodel.cpp b/src/qml/util/qqmladaptormodel.cpp
index 7afafec1fe..b4bebb9d5d 100644
--- a/src/qml/util/qqmladaptormodel.cpp
+++ b/src/qml/util/qqmladaptormodel.cpp
@@ -121,8 +121,8 @@ class VDMModelDelegateDataType
 public:
     VDMModelDelegateDataType(QQmlAdaptorModel *model)
         : model(model)
-        , metaObject(0)
-        , propertyCache(0)
+        , metaObject(nullptr)
+        , propertyCache(nullptr)
         , propertyOffset(0)
         , signalOffset(0)
         , hasModelData(false)
@@ -176,7 +176,7 @@ public:
             const int idx = item->modelIndex();
             if (idx >= index && idx < index + count) {
                 for (int i = 0; i < signalIndexes.count(); ++i)
-                    QMetaObject::activate(item, signalIndexes.at(i), 0);
+                    QMetaObject::activate(item, signalIndexes.at(i), nullptr);
             }
         }
         return changed;
@@ -217,8 +217,8 @@ public:
         QV4::ExecutionEngine *v4 = data->v4;
         QV4::Scope scope(v4);
         QV4::ScopedObject proto(scope, v4->newObject());
-        proto->defineAccessorProperty(QStringLiteral("index"), get_index, 0);
-        proto->defineAccessorProperty(QStringLiteral("hasModelChildren"), get_hasModelChildren, 0);
+        proto->defineAccessorProperty(QStringLiteral("index"), get_index, nullptr);
+        proto->defineAccessorProperty(QStringLiteral("hasModelChildren"), get_hasModelChildren, nullptr);
         QV4::ScopedProperty p(scope);
 
         typedef QHash<QByteArray, int>::const_iterator iterator;
@@ -298,11 +298,11 @@ int QQmlDMCachedModelData::metaCall(QMetaObject::Call call, int id, void **argum
             const QMetaObject *meta = metaObject();
             if (cachedData.count() > 1) {
                 cachedData[propertyIndex] = *static_cast<QVariant *>(arguments[0]);
-                QMetaObject::activate(this, meta, propertyIndex, 0);
+                QMetaObject::activate(this, meta, propertyIndex, nullptr);
             } else if (cachedData.count() == 1) {
                 cachedData[0] = *static_cast<QVariant *>(arguments[0]);
-                QMetaObject::activate(this, meta, 0, 0);
-                QMetaObject::activate(this, meta, 1, 0);
+                QMetaObject::activate(this, meta, 0, nullptr);
+                QMetaObject::activate(this, meta, 1, nullptr);
             }
         } else if (*type->model) {
             setValue(type->propertyRoles.at(propertyIndex), *static_cast<QVariant *>(arguments[0]));
@@ -336,7 +336,7 @@ bool QQmlDMCachedModelData::resolveIndex(const QQmlAdaptorModel &, int idx)
         const QMetaObject *meta = metaObject();
         const int propertyCount = type->propertyRoles.count();
         for (int i = 0; i < propertyCount; ++i)
-            QMetaObject::activate(this, meta, i, 0);
+            QMetaObject::activate(this, meta, i, nullptr);
         return true;
     } else {
         return false;
@@ -381,11 +381,11 @@ QV4::ReturnedValue QQmlDMCachedModelData::set_property(const QV4::FunctionObject
         if (!modelData->cachedData.isEmpty()) {
             if (modelData->cachedData.count() > 1) {
                 modelData->cachedData[propertyId] = scope.engine->toVariant(argv[0], QVariant::Invalid);
-                QMetaObject::activate(o->d()->item, o->d()->item->metaObject(), propertyId, 0);
+                QMetaObject::activate(o->d()->item, o->d()->item->metaObject(), propertyId, nullptr);
             } else if (modelData->cachedData.count() == 1) {
                 modelData->cachedData[0] = scope.engine->toVariant(argv[0], QVariant::Invalid);
-                QMetaObject::activate(o->d()->item, o->d()->item->metaObject(), 0, 0);
-                QMetaObject::activate(o->d()->item, o->d()->item->metaObject(), 1, 0);
+                QMetaObject::activate(o->d()->item, o->d()->item->metaObject(), 0, nullptr);
+                QMetaObject::activate(o->d()->item, o->d()->item->metaObject(), 1, nullptr);
             }
         }
     }
@@ -710,7 +710,7 @@ public:
     QMetaObjectBuilder builder;
 
     VDMObjectDelegateDataType()
-        : metaObject(0)
+        : metaObject(nullptr)
         , propertyOffset(0)
         , signalOffset(0)
         , shared(true)
@@ -720,7 +720,7 @@ public:
     VDMObjectDelegateDataType(const VDMObjectDelegateDataType &type)
         : QQmlRefCount()
         , QQmlAdaptorModel::Accessors()
-        , metaObject(0)
+        , metaObject(nullptr)
         , propertyOffset(type.propertyOffset)
         , signalOffset(type.signalOffset)
         , shared(false)
@@ -759,7 +759,7 @@ public:
             dataType->initializeMetaType(model);
         return index >= 0 && index < model.list.count()
                 ? new QQmlDMObjectData(metaType, dataType, index, qvariant_cast<QObject *>(model.list.at(index)))
-                : 0;
+                : nullptr;
     }
 
     void initializeMetaType(QQmlAdaptorModel &)
@@ -807,7 +807,7 @@ public:
                 QMetaObject::metacall(m_data->object, call, id - m_type->propertyOffset + objectPropertyOffset, arguments);
             return -1;
         } else if (id >= m_type->signalOffset && call == QMetaObject::InvokeMetaMethod) {
-            QMetaObject::activate(m_data, this, id - m_type->signalOffset, 0);
+            QMetaObject::activate(m_data, this, id - m_type->signalOffset, nullptr);
             return -1;
         } else {
             return m_data->qt_metacall(call, id, arguments);
@@ -937,10 +937,10 @@ void QQmlAdaptorModel::setModel(const QVariant &variant, QQmlDelegateModel *vdm,
         accessors = new VDMObjectDelegateDataType;
     } else if (list.type() != QQmlListAccessor::Invalid
             && list.type() != QQmlListAccessor::Instance) { // Null QObject
-        setObject(0);
+        setObject(nullptr);
         accessors = &qt_vdm_list_accessors;
     } else {
-        setObject(0);
+        setObject(nullptr);
         accessors = &qt_vdm_null_accessors;
     }
 }
@@ -960,7 +960,7 @@ bool QQmlAdaptorModel::isValid() const
 
 void QQmlAdaptorModel::objectDestroyed(QObject *)
 {
-    setModel(QVariant(), 0, 0);
+    setModel(QVariant(), nullptr, nullptr);
 }
 
 QQmlAdaptorModelEngineData::QQmlAdaptorModelEngineData(QV4::ExecutionEngine *v4)
@@ -968,7 +968,7 @@ QQmlAdaptorModelEngineData::QQmlAdaptorModelEngineData(QV4::ExecutionEngine *v4)
 {
     QV4::Scope scope(v4);
     QV4::ScopedObject proto(scope, v4->newObject());
-    proto->defineAccessorProperty(QStringLiteral("index"), get_index, 0);
+    proto->defineAccessorProperty(QStringLiteral("index"), get_index, nullptr);
     proto->defineAccessorProperty(QStringLiteral("modelData"),
                                   QQmlDMListAccessorData::get_modelData, QQmlDMListAccessorData::set_modelData);
     listItemProto.set(v4, proto);
diff --git a/src/qml/util/qqmladaptormodel_p.h b/src/qml/util/qqmladaptormodel_p.h
index 7bbddcff07..8f773efa20 100644
--- a/src/qml/util/qqmladaptormodel_p.h
+++ b/src/qml/util/qqmladaptormodel_p.h
@@ -74,7 +74,7 @@ public:
         inline Accessors() {}
         virtual ~Accessors();
         virtual int count(const QQmlAdaptorModel &) const { return 0; }
-        virtual void cleanup(QQmlAdaptorModel &, QQmlDelegateModel * = 0) const {}
+        virtual void cleanup(QQmlAdaptorModel &, QQmlDelegateModel * = nullptr) const {}
 
         virtual QVariant value(const QQmlAdaptorModel &, int, const QString &) const {
             return QVariant(); }
@@ -82,7 +82,7 @@ public:
         virtual QQmlDelegateModelItem *createItem(
                 QQmlAdaptorModel &,
                 QQmlDelegateModelItemMetaType *,
-                int) const { return 0; }
+                int) const { return nullptr; }
 
         virtual bool notify(
                 const QQmlAdaptorModel &,
diff --git a/src/qml/util/qqmlchangeset.cpp b/src/qml/util/qqmlchangeset.cpp
index 79e3332331..ba876b42e2 100644
--- a/src/qml/util/qqmlchangeset.cpp
+++ b/src/qml/util/qqmlchangeset.cpp
@@ -120,7 +120,7 @@ void QQmlChangeSet::remove(int index, int count)
 {
     QVector<Change> removes;
     removes.append(Change(index, count));
-    remove(&removes, 0);
+    remove(&removes, nullptr);
 }
 
 /*!
diff --git a/src/qml/util/qqmlchangeset_p.h b/src/qml/util/qqmlchangeset_p.h
index 8e1fa3f9f2..8bc13f1b67 100644
--- a/src/qml/util/qqmlchangeset_p.h
+++ b/src/qml/util/qqmlchangeset_p.h
@@ -119,7 +119,7 @@ public:
     void change(int index, int count);
 
     void insert(const QVector<Change> &inserts);
-    void remove(const QVector<Change> &removes, QVector<Change> *inserts = 0);
+    void remove(const QVector<Change> &removes, QVector<Change> *inserts = nullptr);
     void move(const QVector<Change> &removes, const QVector<Change> &inserts);
     void change(const QVector<Change> &changes);
     void apply(const QQmlChangeSet &changeSet);
diff --git a/src/qml/util/qqmllistaccessor.cpp b/src/qml/util/qqmllistaccessor.cpp
index 356584abdc..ad55519ad3 100644
--- a/src/qml/util/qqmllistaccessor.cpp
+++ b/src/qml/util/qqmllistaccessor.cpp
@@ -72,7 +72,7 @@ void QQmlListAccessor::setList(const QVariant &v, QQmlEngine *engine)
     if (d.userType() == qMetaTypeId<QJSValue>())
         d = d.value<QJSValue>().toVariant();
 
-    QQmlEnginePrivate *enginePrivate = engine?QQmlEnginePrivate::get(engine):0;
+    QQmlEnginePrivate *enginePrivate = engine?QQmlEnginePrivate::get(engine):nullptr;
 
     if (!d.isValid()) {
         m_type = Invalid;
diff --git a/src/qml/util/qqmllistaccessor_p.h b/src/qml/util/qqmllistaccessor_p.h
index bad5a5803c..bcd079adef 100644
--- a/src/qml/util/qqmllistaccessor_p.h
+++ b/src/qml/util/qqmllistaccessor_p.h
@@ -63,7 +63,7 @@ public:
     ~QQmlListAccessor();
 
     QVariant list() const;
-    void setList(const QVariant &, QQmlEngine * = 0);
+    void setList(const QVariant &, QQmlEngine * = nullptr);
 
     bool isValid() const;
 
diff --git a/src/qml/util/qqmllistcompositor.cpp b/src/qml/util/qqmllistcompositor.cpp
index 05a4eaac39..8b0b8f48f0 100644
--- a/src/qml/util/qqmllistcompositor.cpp
+++ b/src/qml/util/qqmllistcompositor.cpp
@@ -1253,7 +1253,7 @@ void QQmlListCompositor::listItemsRemoved(
 
     QVector<QQmlChangeSet::Change> removals;
     removals.append(QQmlChangeSet::Change(index, count));
-    listItemsRemoved(translatedRemovals, list, &removals, 0, 0);
+    listItemsRemoved(translatedRemovals, list, &removals, nullptr, nullptr);
 }
 
 /*!
diff --git a/src/qml/util/qqmllistcompositor_p.h b/src/qml/util/qqmllistcompositor_p.h
index 6ae9c47df3..d5723889e1 100644
--- a/src/qml/util/qqmllistcompositor_p.h
+++ b/src/qml/util/qqmllistcompositor_p.h
@@ -87,7 +87,7 @@ public:
     class Range
     {
     public:
-        Range() : next(this), previous(this), list(0), index(0), count(0), flags(0) {}
+        Range() : next(this), previous(this), list(nullptr), index(0), count(0), flags(0) {}
         Range(Range *next, void *list, int index, int count, uint flags)
             : next(next), previous(next->previous), list(list), index(index), count(count), flags(flags) {
             next->previous = this; previous->next = this; }
@@ -222,22 +222,22 @@ public:
 
     const iterator &end() { return m_end; }
 
-    void append(void *list, int index, int count, uint flags, QVector<Insert> *inserts = 0);
-    void insert(Group group, int before, void *list, int index, int count, uint flags, QVector<Insert> *inserts = 0);
-    iterator insert(iterator before, void *list, int index, int count, uint flags, QVector<Insert> *inserts = 0);
+    void append(void *list, int index, int count, uint flags, QVector<Insert> *inserts = nullptr);
+    void insert(Group group, int before, void *list, int index, int count, uint flags, QVector<Insert> *inserts = nullptr);
+    iterator insert(iterator before, void *list, int index, int count, uint flags, QVector<Insert> *inserts = nullptr);
 
-    void setFlags(Group fromGroup, int from, int count, Group group, int flags, QVector<Insert> *inserts = 0);
-    void setFlags(iterator from, int count, Group group, uint flags, QVector<Insert> *inserts = 0);
-    void setFlags(Group fromGroup, int from, int count, uint flags, QVector<Insert> *inserts = 0) {
+    void setFlags(Group fromGroup, int from, int count, Group group, int flags, QVector<Insert> *inserts = nullptr);
+    void setFlags(iterator from, int count, Group group, uint flags, QVector<Insert> *inserts = nullptr);
+    void setFlags(Group fromGroup, int from, int count, uint flags, QVector<Insert> *inserts = nullptr) {
         setFlags(fromGroup, from, count, fromGroup, flags, inserts); }
-    void setFlags(const iterator from, int count, uint flags, QVector<Insert> *inserts = 0) {
+    void setFlags(const iterator from, int count, uint flags, QVector<Insert> *inserts = nullptr) {
         setFlags(from, count, from.group, flags, inserts); }
 
-    void clearFlags(Group fromGroup, int from, int count, Group group, uint flags, QVector<Remove> *removals = 0);
-    void clearFlags(iterator from, int count, Group group, uint flags, QVector<Remove> *removals = 0);
-    void clearFlags(Group fromGroup, int from, int count, uint flags, QVector<Remove> *removals = 0) {
+    void clearFlags(Group fromGroup, int from, int count, Group group, uint flags, QVector<Remove> *removals = nullptr);
+    void clearFlags(iterator from, int count, Group group, uint flags, QVector<Remove> *removals = nullptr);
+    void clearFlags(Group fromGroup, int from, int count, uint flags, QVector<Remove> *removals = nullptr) {
         clearFlags(fromGroup, from, count, fromGroup, flags, removals); }
-    void clearFlags(const iterator &from, int count, uint flags, QVector<Remove> *removals = 0) {
+    void clearFlags(const iterator &from, int count, uint flags, QVector<Remove> *removals = nullptr) {
         clearFlags(from, count, from.group, flags, removals); }
 
     bool verifyMoveTo(Group fromGroup, int from, Group toGroup, int to, int count, Group group) const;
@@ -249,8 +249,8 @@ public:
             int to,
             int count,
             Group group,
-            QVector<Remove> *removals = 0,
-            QVector<Insert> *inserts = 0);
+            QVector<Remove> *removals = nullptr,
+            QVector<Insert> *inserts = nullptr);
     void clear();
 
     void listItemsInserted(void *list, int index, int count, QVector<Insert> *inserts);
@@ -289,13 +289,13 @@ private:
             QVector<Remove> *translatedRemovals,
             void *list,
             QVector<QQmlChangeSet::Change> *removals,
-            QVector<QQmlChangeSet::Change> *insertions = 0,
-            QVector<MovedFlags> *movedFlags = 0);
+            QVector<QQmlChangeSet::Change> *insertions = nullptr,
+            QVector<MovedFlags> *movedFlags = nullptr);
     void listItemsInserted(
             QVector<Insert> *translatedInsertions,
             void *list,
             const QVector<QQmlChangeSet::Change> &insertions,
-            const QVector<MovedFlags> *movedFlags = 0);
+            const QVector<MovedFlags> *movedFlags = nullptr);
     void listItemsChanged(
             QVector<Change> *translatedChanges,
             void *list,
@@ -309,7 +309,7 @@ Q_DECLARE_TYPEINFO(QQmlListCompositor::Remove, Q_PRIMITIVE_TYPE);
 Q_DECLARE_TYPEINFO(QQmlListCompositor::Insert, Q_PRIMITIVE_TYPE);
 
 inline QQmlListCompositor::iterator::iterator()
-    : range(0), offset(0), group(Default), groupCount(0) {}
+    : range(nullptr), offset(0), group(Default), groupCount(0) {}
 inline QQmlListCompositor::iterator::iterator(const iterator &it)
     : range(it.range)
     , offset(it.offset)
diff --git a/src/qmldebug/qqmldebugclient.cpp b/src/qmldebug/qqmldebugclient.cpp
index 7f1e8c637c..d412b7b267 100644
--- a/src/qmldebug/qqmldebugclient.cpp
+++ b/src/qmldebug/qqmldebugclient.cpp
@@ -77,7 +77,7 @@ void QQmlDebugClientPrivate::addToConnection()
     Q_Q(QQmlDebugClient);
     if (connection && !connection->addClient(name, q)) {
         qWarning() << "QQmlDebugClient: Conflicting plugin name" << name;
-        connection = 0;
+        connection = nullptr;
     }
 }
 
diff --git a/src/qmldebug/qqmldebugconnection.cpp b/src/qmldebug/qqmldebugconnection.cpp
index 73ccd7c854..1f40cab049 100644
--- a/src/qmldebug/qqmldebugconnection.cpp
+++ b/src/qmldebug/qqmldebugconnection.cpp
@@ -82,7 +82,7 @@ public:
 };
 
 QQmlDebugConnectionPrivate::QQmlDebugConnectionPrivate() :
-    protocol(0), device(0), server(0), gotHello(false),
+    protocol(nullptr), device(nullptr), server(nullptr), gotHello(false),
     currentDataStreamVersion(QDataStream::Qt_4_7),
     maximumDataStreamVersion(QDataStream::Qt_DefaultCompiledVersion)
 {
@@ -303,7 +303,7 @@ void QQmlDebugConnection::close()
 
     if (d->device) {
         d->device->deleteLater();
-        d->device = 0;
+        d->device = nullptr;
     }
 }
 
diff --git a/src/qmldebug/qqmldebugconnection_p.h b/src/qmldebug/qqmldebugconnection_p.h
index be425b6cbf..ad9376886c 100644
--- a/src/qmldebug/qqmldebugconnection_p.h
+++ b/src/qmldebug/qqmldebugconnection_p.h
@@ -64,7 +64,7 @@ class QQmlDebugConnection : public QObject
     Q_DISABLE_COPY(QQmlDebugConnection)
     Q_DECLARE_PRIVATE(QQmlDebugConnection)
 public:
-    QQmlDebugConnection(QObject *parent = 0);
+    QQmlDebugConnection(QObject *parent = nullptr);
     ~QQmlDebugConnection();
 
     void connectToHost(const QString &hostName, quint16 port);
diff --git a/src/qmltest/quicktest.cpp b/src/qmltest/quicktest.cpp
index 817f9a5389..a02a0a806d 100644
--- a/src/qmltest/quicktest.cpp
+++ b/src/qmltest/quicktest.cpp
@@ -79,7 +79,7 @@ class QTestRootObject : public QObject
     Q_PROPERTY(bool hasTestCase READ hasTestCase WRITE setHasTestCase NOTIFY hasTestCaseChanged)
     Q_PROPERTY(QObject *defined READ defined)
 public:
-    QTestRootObject(QObject *parent = 0)
+    QTestRootObject(QObject *parent = nullptr)
         : QObject(parent), hasQuit(false), m_windowShown(false), m_hasTestCase(false)  {
         m_defined = new QQmlPropertyMap(this);
 #if defined(QT_OPENGL_ES_2_ANGLE)
@@ -191,7 +191,7 @@ bool qWaitForSignal(QObject *obj, const char* signal, int timeout = 5000)
         if (remaining <= 0)
             break;
         QCoreApplication::processEvents(QEventLoop::AllEvents, remaining);
-        QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
+        QCoreApplication::sendPostedEvents(nullptr, QEvent::DeferredDelete);
         QTest::qSleep(10);
     }
 
@@ -343,7 +343,7 @@ int quick_test_main_with_setup(int argc, char **argv, const char *name, const ch
     }
 #endif
 
-    QCoreApplication *app = 0;
+    QCoreApplication *app = nullptr;
     if (!QCoreApplication::instance()) {
 #ifdef QT_QMLTEST_WITH_WIDGETS
         if (withWidgets)
@@ -577,7 +577,7 @@ int quick_test_main_with_setup(int argc, char **argv, const char *name, const ch
     }
 
     // Flush the current logging stream.
-    QuickTestResult::setProgramName(0);
+    QuickTestResult::setProgramName(nullptr);
     delete app;
 
     // Return the number of failures as the exit code.
diff --git a/src/qmltest/quicktestevent.cpp b/src/qmltest/quicktestevent.cpp
index bf255e9cda..ee375a896c 100644
--- a/src/qmltest/quicktestevent.cpp
+++ b/src/qmltest/quicktestevent.cpp
@@ -190,7 +190,7 @@ namespace QtQuickTest
                 me.setTimestamp(++lastMouseTimestamp);
                 break;
             case MouseRelease:
-                me = QMouseEvent(QEvent::MouseButtonRelease, pos, window->mapToGlobal(pos), button, 0, stateKey);
+                me = QMouseEvent(QEvent::MouseButtonRelease, pos, window->mapToGlobal(pos), button, nullptr, stateKey);
                 me.setTimestamp(++lastMouseTimestamp);
                 lastMouseTimestamp += 500; // avoid double clicks being generated
                 break;
@@ -355,7 +355,7 @@ QWindow *QuickTestEvent::eventWindow(QObject *item)
     QQuickItem *testParentitem = qobject_cast<QQuickItem *>(parent());
     if (testParentitem)
         return testParentitem->window();
-    return 0;
+    return nullptr;
 }
 
 QWindow *QuickTestEvent::activeWindow()
diff --git a/src/qmltest/quicktestevent_p.h b/src/qmltest/quicktestevent_p.h
index 92477399bc..d586ff638d 100644
--- a/src/qmltest/quicktestevent_p.h
+++ b/src/qmltest/quicktestevent_p.h
@@ -81,7 +81,7 @@ class Q_QUICK_TEST_EXPORT QuickTestEvent : public QObject
     Q_OBJECT
     Q_PROPERTY(int defaultMouseDelay READ defaultMouseDelay FINAL)
 public:
-    QuickTestEvent(QObject *parent = 0);
+    QuickTestEvent(QObject *parent = nullptr);
     ~QuickTestEvent();
     int defaultMouseDelay() const;
 
@@ -115,7 +115,7 @@ public Q_SLOTS:
 
     QQuickTouchEventSequence *touchEvent(QObject *item = nullptr);
 private:
-    QWindow *eventWindow(QObject *item = 0);
+    QWindow *eventWindow(QObject *item = nullptr);
     QWindow *activeWindow();
     QTouchDevice *touchDevice();
 
diff --git a/src/qmltest/quicktestresult.cpp b/src/qmltest/quicktestresult.cpp
index d7d692a80d..c4a3280cf6 100644
--- a/src/qmltest/quicktestresult.cpp
+++ b/src/qmltest/quicktestresult.cpp
@@ -73,7 +73,7 @@
 
 QT_BEGIN_NAMESPACE
 
-static const char *globalProgramName = 0;
+static const char *globalProgramName = nullptr;
 static bool loggingStarted = false;
 static QBenchmarkGlobalData globalBenchmarkData;
 
@@ -88,7 +88,7 @@ class Q_QUICK_TEST_EXPORT QuickTestImageObject : public QObject
     Q_PROPERTY(QSize size READ size CONSTANT)
 
 public:
-    QuickTestImageObject(const QImage& img, QObject *parent = 0)
+    QuickTestImageObject(const QImage& img, QObject *parent = nullptr)
         : QObject(parent)
         , m_image(img)
     {
@@ -172,9 +172,9 @@ class QuickTestResultPrivate
 {
 public:
     QuickTestResultPrivate()
-        : table(0)
-        , benchmarkIter(0)
-        , benchmarkData(0)
+        : table(nullptr)
+        , benchmarkIter(nullptr)
+        , benchmarkData(nullptr)
         , iterCount(0)
     {
     }
@@ -261,10 +261,10 @@ void QuickTestResult::setFunctionName(const QString &name)
             QString fullName = d->testCaseName + QLatin1String("::") + name;
             QTestResult::setCurrentTestFunction
                 (d->intern(fullName).constData());
-            QTestPrivate::checkBlackLists(fullName.toUtf8().constData(), 0);
+            QTestPrivate::checkBlackLists(fullName.toUtf8().constData(), nullptr);
         }
     } else {
-        QTestResult::setCurrentTestFunction(0);
+        QTestResult::setCurrentTestFunction(nullptr);
     }
     d->functionName = name;
     emit functionNameChanged();
@@ -293,7 +293,7 @@ void QuickTestResult::setDataTag(const QString &tag)
         QTestPrivate::checkBlackLists((testCaseName() + QLatin1String("::") + functionName()).toUtf8().constData(), tag.toUtf8().constData());
         emit dataTagChanged();
     } else {
-        QTestResult::setCurrentTestData(0);
+        QTestResult::setCurrentTestData(nullptr);
     }
 }
 
@@ -438,7 +438,7 @@ void QuickTestResult::clearTestTable()
 {
     Q_D(QuickTestResult);
     delete d->table;
-    d->table = 0;
+    d->table = nullptr;
 }
 
 void QuickTestResult::finishTestData()
@@ -745,7 +745,7 @@ void QuickTestResult::stopBenchmark()
 {
     Q_D(QuickTestResult);
     delete d->benchmarkIter;
-    d->benchmarkIter = 0;
+    d->benchmarkIter = nullptr;
 }
 
 QObject *QuickTestResult::grabImage(QQuickItem *item)
@@ -759,7 +759,7 @@ QObject *QuickTestResult::grabImage(QQuickItem *item)
         QQmlEngine::setContextForObject(o, qmlContext(this));
         return o;
     }
-    return 0;
+    return nullptr;
 }
 
 QObject *QuickTestResult::findChild(QObject *parent, const QString &objectName)
@@ -787,7 +787,7 @@ void QuickTestResult::setProgramName(const char *name)
     } else if (!name && loggingStarted) {
         QTestResult::setCurrentTestObject(globalProgramName);
         QTestLog::stopLogging();
-        QTestResult::setCurrentTestObject(0);
+        QTestResult::setCurrentTestObject(nullptr);
     }
     globalProgramName = name;
     QTestResult::setCurrentTestObject(globalProgramName);
diff --git a/src/qmltest/quicktestresult_p.h b/src/qmltest/quicktestresult_p.h
index af13299ee5..3973cf4072 100644
--- a/src/qmltest/quicktestresult_p.h
+++ b/src/qmltest/quicktestresult_p.h
@@ -77,7 +77,7 @@ class Q_QUICK_TEST_EXPORT QuickTestResult : public QObject
     Q_PROPERTY(int skipCount READ skipCount)
     Q_PROPERTY(QStringList functionsToRun READ functionsToRun)
 public:
-    QuickTestResult(QObject *parent = 0);
+    QuickTestResult(QObject *parent = nullptr);
     ~QuickTestResult();
 
     // Values must match QBenchmarkIterationController::RunMode.
diff --git a/src/quick/accessible/qaccessiblequickitem.cpp b/src/quick/accessible/qaccessiblequickitem.cpp
index 2d6bb02af4..87e581384b 100644
--- a/src/quick/accessible/qaccessiblequickitem.cpp
+++ b/src/quick/accessible/qaccessiblequickitem.cpp
@@ -92,7 +92,7 @@ QAccessibleInterface *QAccessibleQuickItem::childAt(int x, int y) const
 {
     if (item()->clip()) {
         if (!rect().contains(x, y))
-            return 0;
+            return nullptr;
     }
 
     const QList<QQuickItem*> kids = accessibleUnignoredChildren(item(), true);
@@ -106,14 +106,14 @@ QAccessibleInterface *QAccessibleQuickItem::childAt(int x, int y) const
         }
     }
 
-    return 0;
+    return nullptr;
 }
 
 QAccessibleInterface *QAccessibleQuickItem::parent() const
 {
     QQuickItem *parent = item()->parentItem();
     QQuickWindow *window = item()->window();
-    QQuickItem *ci = window ? window->contentItem() : 0;
+    QQuickItem *ci = window ? window->contentItem() : nullptr;
     while (parent && !QQuickItemPrivate::get(parent)->isAccessible && parent != ci)
         parent = parent->parentItem();
 
@@ -131,7 +131,7 @@ QAccessibleInterface *QAccessibleQuickItem::parent() const
             return QAccessible::queryAccessibleInterface(parent);
         }
     }
-    return 0;
+    return nullptr;
 }
 
 QAccessibleInterface *QAccessibleQuickItem::child(int index) const
@@ -139,7 +139,7 @@ QAccessibleInterface *QAccessibleQuickItem::child(int index) const
     QList<QQuickItem *> children = childItems();
 
     if (index < 0 || index >= children.count())
-        return 0;
+        return nullptr;
 
     QQuickItem *child = children.at(index);
     return QAccessible::queryAccessibleInterface(child);
@@ -458,7 +458,7 @@ QTextDocument *QAccessibleQuickItem::textDocument() const
         QQuickTextDocument *qqdoc = docVariant.value<QQuickTextDocument*>();
         return qqdoc->textDocument();
     }
-    return 0;
+    return nullptr;
 }
 
 int QAccessibleQuickItem::characterCount() const
diff --git a/src/quick/accessible/qaccessiblequickview.cpp b/src/quick/accessible/qaccessiblequickview.cpp
index b3d1b6fc0f..3bb40546be 100644
--- a/src/quick/accessible/qaccessiblequickview.cpp
+++ b/src/quick/accessible/qaccessiblequickview.cpp
@@ -78,7 +78,7 @@ QAccessibleInterface *QAccessibleQuickWindow::child(int index) const
     const QList<QQuickItem*> &kids = rootItems();
     if (index >= 0 && index < kids.count())
         return QAccessible::queryAccessibleInterface(kids.at(index));
-    return 0;
+    return nullptr;
 }
 
 QAccessibleInterface *QAccessibleQuickWindow::focusChild() const
@@ -133,7 +133,7 @@ QAccessibleInterface *QAccessibleQuickWindow::childAt(int x, int y) const
                 return childIface;
         }
     }
-    return 0;
+    return nullptr;
 }
 
 int QAccessibleQuickWindow::indexOfChild(const QAccessibleInterface *iface) const
diff --git a/src/quick/accessible/qquickaccessiblefactory.cpp b/src/quick/accessible/qquickaccessiblefactory.cpp
index a1fa695e5a..1aacf8e8bd 100644
--- a/src/quick/accessible/qquickaccessiblefactory.cpp
+++ b/src/quick/accessible/qquickaccessiblefactory.cpp
@@ -55,11 +55,11 @@ QAccessibleInterface *qQuickAccessibleFactory(const QString &classname, QObject
         Q_ASSERT(item);
         QQuickItemPrivate *itemPrivate = QQuickItemPrivate::get(item);
         if (!itemPrivate->isAccessible)
-            return 0;
+            return nullptr;
         return new QAccessibleQuickItem(item);
     }
 
-    return 0;
+    return nullptr;
 }
 
 #endif
diff --git a/src/quick/designer/qqmldesignermetaobject.cpp b/src/quick/designer/qqmldesignermetaobject.cpp
index 63364192c6..09493c30d6 100644
--- a/src/quick/designer/qqmldesignermetaobject.cpp
+++ b/src/quick/designer/qqmldesignermetaobject.cpp
@@ -50,7 +50,7 @@
 QT_BEGIN_NAMESPACE
 
 static QHash<QDynamicMetaObjectData *, bool> nodeInstanceMetaObjectList;
-static void (*notifyPropertyChangeCallBack)(QObject*, const QQuickDesignerSupport::PropertyName &propertyName) = 0;
+static void (*notifyPropertyChangeCallBack)(QObject*, const QQuickDesignerSupport::PropertyName &propertyName) = nullptr;
 
 struct MetaPropertyData {
     inline QPair<QVariant, bool> &getDataRef(int idx) {
@@ -174,7 +174,7 @@ void QQmlDesignerMetaObject::setValue(int id, const QVariant &value)
     QPair<QVariant, bool> &prop = m_data->getDataRef(id);
     prop.first = propertyWriteValue(id, value);
     prop.second = true;
-    QMetaObject::activate(myObject(), id + m_type->signalOffset(), 0);
+    QMetaObject::activate(myObject(), id + m_type->signalOffset(), nullptr);
 }
 
 QVariant QQmlDesignerMetaObject::propertyWriteValue(int, const QVariant &value)
@@ -187,7 +187,7 @@ const QAbstractDynamicMetaObject *QQmlDesignerMetaObject::dynamicMetaObjectParen
     if (QQmlVMEMetaObject::parent.isT1())
         return QQmlVMEMetaObject::parent.asT1()->toDynamicMetaObject(QQmlVMEMetaObject::object);
     else
-        return 0;
+        return nullptr;
 }
 
 const QMetaObject *QQmlDesignerMetaObject::metaObjectParent() const
@@ -218,7 +218,7 @@ int QQmlDesignerMetaObject::openMetaCall(QObject *o, QMetaObject::Call call, int
                 prop.first = propertyWriteValue(propId, *reinterpret_cast<QVariant *>(a[0]));
                 prop.second = true;
                 //propertyWritten(propId);
-                activate(myObject(), m_type->signalOffset() + propId, 0);
+                activate(myObject(), m_type->signalOffset() + propId, nullptr);
             }
         }
         return -1;
diff --git a/src/quick/designer/qquickdesignercustomobjectdata.cpp b/src/quick/designer/qquickdesignercustomobjectdata.cpp
index ca9c1259fd..59e086b5a3 100644
--- a/src/quick/designer/qquickdesignercustomobjectdata.cpp
+++ b/src/quick/designer/qquickdesignercustomobjectdata.cpp
@@ -180,7 +180,7 @@ void QQuickDesignerCustomObjectData::doResetProperty(QQmlContext *context, const
 
     QQmlAbstractBinding *binding = QQmlPropertyPrivate::binding(property);
     if (binding && !(hasValidResetBinding(propertyName) && getResetBinding(propertyName) == binding)) {
-        binding->setEnabled(false, 0);
+        binding->setEnabled(false, nullptr);
     }
 
 
diff --git a/src/quick/designer/qquickdesignersupport.cpp b/src/quick/designer/qquickdesignersupport.cpp
index 88971e3172..1851c25a77 100644
--- a/src/quick/designer/qquickdesignersupport.cpp
+++ b/src/quick/designer/qquickdesignersupport.cpp
@@ -78,7 +78,7 @@ QQuickDesignerSupport::~QQuickDesignerSupport()
 
 void QQuickDesignerSupport::refFromEffectItem(QQuickItem *referencedItem, bool hide)
 {
-    if (referencedItem == 0)
+    if (referencedItem == nullptr)
         return;
 
     QQuickItemPrivate::get(referencedItem)->refFromEffectItem(hide);
@@ -114,7 +114,7 @@ void QQuickDesignerSupport::refFromEffectItem(QQuickItem *referencedItem, bool h
 
 void QQuickDesignerSupport::derefFromEffectItem(QQuickItem *referencedItem, bool unhide)
 {
-    if (referencedItem == 0)
+    if (referencedItem == nullptr)
         return;
 
     delete m_itemTextureHash.take(referencedItem);
@@ -123,7 +123,7 @@ void QQuickDesignerSupport::derefFromEffectItem(QQuickItem *referencedItem, bool
 
 QImage QQuickDesignerSupport::renderImageForItem(QQuickItem *referencedItem, const QRectF &boundingRect, const QSize &imageSize)
 {
-    if (referencedItem == 0 || referencedItem->parentItem() == 0) {
+    if (referencedItem == nullptr || referencedItem->parentItem() == nullptr) {
         qDebug() << __FILE__ << __LINE__ << "Warning: Item can be rendered.";
         return QImage();
     }
@@ -131,7 +131,7 @@ QImage QQuickDesignerSupport::renderImageForItem(QQuickItem *referencedItem, con
     QSGLayer *renderTexture = m_itemTextureHash.value(referencedItem);
 
     Q_ASSERT(renderTexture);
-    if (renderTexture == 0)
+    if (renderTexture == nullptr)
          return QImage();
     renderTexture->setRect(boundingRect);
     renderTexture->setSize(imageSize);
@@ -150,7 +150,7 @@ QImage QQuickDesignerSupport::renderImageForItem(QQuickItem *referencedItem, con
 
 bool QQuickDesignerSupport::isDirty(QQuickItem *referencedItem, DirtyType dirtyType)
 {
-    if (referencedItem == 0)
+    if (referencedItem == nullptr)
         return false;
 
     return QQuickItemPrivate::get(referencedItem)->dirtyAttributes & dirtyType;
@@ -158,7 +158,7 @@ bool QQuickDesignerSupport::isDirty(QQuickItem *referencedItem, DirtyType dirtyT
 
 void QQuickDesignerSupport::addDirty(QQuickItem *referencedItem, QQuickDesignerSupport::DirtyType dirtyType)
 {
-    if (referencedItem == 0)
+    if (referencedItem == nullptr)
         return;
 
     QQuickItemPrivate::get(referencedItem)->dirtyAttributes |= dirtyType;
@@ -166,7 +166,7 @@ void QQuickDesignerSupport::addDirty(QQuickItem *referencedItem, QQuickDesignerS
 
 void QQuickDesignerSupport::resetDirty(QQuickItem *referencedItem)
 {
-    if (referencedItem == 0)
+    if (referencedItem == nullptr)
         return;
 
     QQuickItemPrivate::get(referencedItem)->dirtyAttributes = 0x0;
@@ -175,7 +175,7 @@ void QQuickDesignerSupport::resetDirty(QQuickItem *referencedItem)
 
 QTransform QQuickDesignerSupport::windowTransform(QQuickItem *referencedItem)
 {
-    if (referencedItem == 0)
+    if (referencedItem == nullptr)
         return QTransform();
 
     return QQuickItemPrivate::get(referencedItem)->itemToWindowTransform();
@@ -183,7 +183,7 @@ QTransform QQuickDesignerSupport::windowTransform(QQuickItem *referencedItem)
 
 QTransform QQuickDesignerSupport::parentTransform(QQuickItem *referencedItem)
 {
-    if (referencedItem == 0)
+    if (referencedItem == nullptr)
         return QTransform();
 
     QTransform parentTransform;
@@ -294,31 +294,31 @@ bool QQuickDesignerSupport::hasAnchor(QQuickItem *item, const QString &name)
         return false;
 
     if (name == QLatin1String("anchors.fill"))
-        return anchors(item)->fill() != 0;
+        return anchors(item)->fill() != nullptr;
 
     if (name == QLatin1String("anchors.centerIn"))
-        return anchors(item)->centerIn() != 0;
+        return anchors(item)->centerIn() != nullptr;
 
     if (name == QLatin1String("anchors.right"))
-        return anchors(item)->right().item != 0;
+        return anchors(item)->right().item != nullptr;
 
     if (name == QLatin1String("anchors.top"))
-        return anchors(item)->top().item != 0;
+        return anchors(item)->top().item != nullptr;
 
     if (name == QLatin1String("anchors.left"))
-        return anchors(item)->left().item != 0;
+        return anchors(item)->left().item != nullptr;
 
     if (name == QLatin1String("anchors.bottom"))
-        return anchors(item)->bottom().item != 0;
+        return anchors(item)->bottom().item != nullptr;
 
     if (name == QLatin1String("anchors.horizontalCenter"))
-        return anchors(item)->horizontalCenter().item != 0;
+        return anchors(item)->horizontalCenter().item != nullptr;
 
     if (name == QLatin1String("anchors.verticalCenter"))
-        return anchors(item)->verticalCenter().item != 0;
+        return anchors(item)->verticalCenter().item != nullptr;
 
     if (name == QLatin1String("anchors.baseline"))
-        return anchors(item)->baseline().item != 0;
+        return anchors(item)->baseline().item != nullptr;
 
     return anchors(item)->usedAnchors().testFlag(anchorLineFlagForName(name));
 }
@@ -337,7 +337,7 @@ QQuickItem *QQuickDesignerSupport::anchorCenterInTargetItem(QQuickItem *item)
 
 QPair<QString, QObject*> QQuickDesignerSupport::anchorLineTarget(QQuickItem *item, const QString &name, QQmlContext *context)
 {
-    QObject *targetObject = 0;
+    QObject *targetObject = nullptr;
     QString targetName;
 
     if (name == QLatin1String("anchors.fill")) {
diff --git a/src/quick/designer/qquickdesignersupportitems.cpp b/src/quick/designer/qquickdesignersupportitems.cpp
index 38ba46e702..9fadbb2122 100644
--- a/src/quick/designer/qquickdesignersupportitems.cpp
+++ b/src/quick/designer/qquickdesignersupportitems.cpp
@@ -55,11 +55,11 @@
 
 QT_BEGIN_NAMESPACE
 
-static void (*fixResourcePathsForObjectCallBack)(QObject*) = 0;
+static void (*fixResourcePathsForObjectCallBack)(QObject*) = nullptr;
 
 static void stopAnimation(QObject *object)
 {
-    if (object == 0)
+    if (object == nullptr)
         return;
 
     QQuickTransition *transition = qobject_cast<QQuickTransition*>(object);
@@ -203,7 +203,7 @@ QObject *QQuickDesignerSupportItems::createPrimitive(const QString &typeName, in
 
     Q_UNUSED(disableComponentComplete)
 
-    QObject *object = 0;
+    QObject *object = nullptr;
     QQmlType type = QQmlMetaType::qmlType(typeName, majorNumber, minorNumber);
 
     if (isCrashingType(type)) {
@@ -214,7 +214,7 @@ QObject *QQuickDesignerSupportItems::createPrimitive(const QString &typeName, in
         } else
         {
             if (type.typeName() == "QQmlComponent") {
-                object = new QQmlComponent(context->engine(), 0);
+                object = new QQmlComponent(context->engine(), nullptr);
             } else  {
                 object = type.create();
             }
@@ -235,7 +235,7 @@ QObject *QQuickDesignerSupportItems::createPrimitive(const QString &typeName, in
 
     tweakObjects(object);
 
-    if (object && QQmlEngine::contextForObject(object) == 0)
+    if (object && QQmlEngine::contextForObject(object) == nullptr)
         QQmlEngine::setContextForObject(object, context);
 
     QQmlEngine::setObjectOwnership(object, QQmlEngine::CppOwnership);
diff --git a/src/quick/designer/qquickdesignersupportmetainfo.cpp b/src/quick/designer/qquickdesignersupportmetainfo.cpp
index b398bae55d..9c8a642837 100644
--- a/src/quick/designer/qquickdesignersupportmetainfo.cpp
+++ b/src/quick/designer/qquickdesignersupportmetainfo.cpp
@@ -47,7 +47,7 @@ QT_BEGIN_NAMESPACE
 
 bool QQuickDesignerSupportMetaInfo::isSubclassOf(QObject *object, const QByteArray &superTypeName)
 {
-    if (object == 0)
+    if (object == nullptr)
         return false;
 
     const QMetaObject *metaObject = object->metaObject();
diff --git a/src/quick/designer/qquickdesignersupportproperties.cpp b/src/quick/designer/qquickdesignersupportproperties.cpp
index a4d1fd0dc1..674f811f8f 100644
--- a/src/quick/designer/qquickdesignersupportproperties.cpp
+++ b/src/quick/designer/qquickdesignersupportproperties.cpp
@@ -134,7 +134,7 @@ QQuickDesignerSupport::PropertyNameList QQuickDesignerSupportProperties::propert
 
     QObjectList localObjectList;
 
-    if (inspectedObjects == 0)
+    if (inspectedObjects == nullptr)
         inspectedObjects = &localObjectList;
 
 
@@ -191,7 +191,7 @@ QQuickDesignerSupport::PropertyNameList QQuickDesignerSupportProperties::allProp
 
     QObjectList localObjectList;
 
-    if (inspectedObjects == 0)
+    if (inspectedObjects == nullptr)
         inspectedObjects = &localObjectList;
 
 
diff --git a/src/quick/designer/qquickdesignersupportproperties_p.h b/src/quick/designer/qquickdesignersupportproperties_p.h
index a2872be060..02e75ea886 100644
--- a/src/quick/designer/qquickdesignersupportproperties_p.h
+++ b/src/quick/designer/qquickdesignersupportproperties_p.h
@@ -92,10 +92,10 @@ public:
     static bool isPropertyBlackListed(const QQuickDesignerSupport::PropertyName &propertyName);
     static QQuickDesignerSupport::PropertyNameList propertyNameListForWritableProperties(QObject *object,
                                                                   const QQuickDesignerSupport::PropertyName &baseName = QQuickDesignerSupport::PropertyName(),
-                                                                  QObjectList *inspectedObjects = 0);
+                                                                  QObjectList *inspectedObjects = nullptr);
     static QQuickDesignerSupport::PropertyNameList allPropertyNames(QObject *object,
                                              const QQuickDesignerSupport::PropertyName &baseName = QQuickDesignerSupport::PropertyName(),
-                                             QObjectList *inspectedObjects = 0);
+                                             QObjectList *inspectedObjects = nullptr);
     static bool hasFullImplementedListInterface(const QQmlListReference &list);
 };
 
diff --git a/src/quick/designer/qquickdesignersupportpropertychanges.cpp b/src/quick/designer/qquickdesignersupportpropertychanges.cpp
index 5cafcfc360..0ee8857325 100644
--- a/src/quick/designer/qquickdesignersupportpropertychanges.cpp
+++ b/src/quick/designer/qquickdesignersupportpropertychanges.cpp
@@ -59,7 +59,7 @@ QObject *QQuickDesignerSupportPropertyChanges::targetObject(QObject *propertyCha
     QQuickPropertyChanges *propertyChange = qobject_cast<QQuickPropertyChanges*>(propertyChanges);
 
     if (!propertyChange)
-        return 0;
+        return nullptr;
 
     return propertyChange->object();
 }
@@ -114,7 +114,7 @@ QObject *QQuickDesignerSupportPropertyChanges::stateObject(QObject *propertyChan
     QQuickPropertyChanges *propertyChange = qobject_cast<QQuickPropertyChanges*>(propertyChanges);
 
     if (!propertyChange)
-        return 0;
+        return nullptr;
 
     return propertyChange->state();
 }
diff --git a/src/quick/handlers/qquickdraghandler_p.h b/src/quick/handlers/qquickdraghandler_p.h
index 50f56d78a4..363df31a64 100644
--- a/src/quick/handlers/qquickdraghandler_p.h
+++ b/src/quick/handlers/qquickdraghandler_p.h
@@ -93,7 +93,7 @@ class Q_AUTOTEST_EXPORT QQuickDragHandler : public QQuickSinglePointHandler
     Q_PROPERTY(QVector2D translation READ translation NOTIFY translationChanged)
 
 public:
-    explicit QQuickDragHandler(QObject *parent = 0);
+    explicit QQuickDragHandler(QObject *parent = nullptr);
     ~QQuickDragHandler();
 
     void handleEventPoint(QQuickEventPoint *point) override;
diff --git a/src/quick/handlers/qquickmultipointhandler_p.h b/src/quick/handlers/qquickmultipointhandler_p.h
index 05c3876246..67e550d387 100644
--- a/src/quick/handlers/qquickmultipointhandler_p.h
+++ b/src/quick/handlers/qquickmultipointhandler_p.h
@@ -65,7 +65,7 @@ class Q_AUTOTEST_EXPORT QQuickMultiPointHandler : public QQuickPointerDeviceHand
     Q_PROPERTY(qreal pointDistanceThreshold READ pointDistanceThreshold WRITE setPointDistanceThreshold NOTIFY pointDistanceThresholdChanged)
 
 public:
-    explicit QQuickMultiPointHandler(QObject *parent = 0, int minimumPointCount = 2);
+    explicit QQuickMultiPointHandler(QObject *parent = nullptr, int minimumPointCount = 2);
     ~QQuickMultiPointHandler();
 
     int minimumPointCount() const { return m_minimumPointCount; }
diff --git a/src/quick/handlers/qquickpinchhandler_p.h b/src/quick/handlers/qquickpinchhandler_p.h
index 7d6b7d9509..9a17971416 100644
--- a/src/quick/handlers/qquickpinchhandler_p.h
+++ b/src/quick/handlers/qquickpinchhandler_p.h
@@ -82,7 +82,7 @@ public:
     };
     Q_ENUM(PinchOrigin)
 
-    explicit QQuickPinchHandler(QObject *parent = 0);
+    explicit QQuickPinchHandler(QObject *parent = nullptr);
     ~QQuickPinchHandler();
 
     qreal minimumScale() const { return m_minimumScale; }
diff --git a/src/quick/handlers/qquickpointerdevicehandler_p.h b/src/quick/handlers/qquickpointerdevicehandler_p.h
index 9e30fa0be4..1638604ea7 100644
--- a/src/quick/handlers/qquickpointerdevicehandler_p.h
+++ b/src/quick/handlers/qquickpointerdevicehandler_p.h
@@ -63,7 +63,7 @@ class Q_AUTOTEST_EXPORT QQuickPointerDeviceHandler : public QQuickPointerHandler
     Q_PROPERTY(Qt::KeyboardModifiers acceptedModifiers READ acceptedModifiers WRITE setAcceptedModifiers NOTIFY acceptedModifiersChanged)
 
 public:
-    explicit QQuickPointerDeviceHandler(QObject *parent = 0);
+    explicit QQuickPointerDeviceHandler(QObject *parent = nullptr);
     ~QQuickPointerDeviceHandler();
 
     QQuickPointerDevice::DeviceTypes acceptedDevices() const { return m_acceptedDevices; }
diff --git a/src/quick/handlers/qquickpointerhandler_p.h b/src/quick/handlers/qquickpointerhandler_p.h
index 06a8248468..9ea6a8b5e2 100644
--- a/src/quick/handlers/qquickpointerhandler_p.h
+++ b/src/quick/handlers/qquickpointerhandler_p.h
@@ -72,7 +72,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPointerHandler : public QObject, public QQmlP
     Q_PROPERTY(GrabPermissions grabPermissions READ grabPermissions WRITE setGrabPermissions NOTIFY grabPermissionChanged)
 
 public:
-    explicit QQuickPointerHandler(QObject *parent = 0);
+    explicit QQuickPointerHandler(QObject *parent = nullptr);
     virtual ~QQuickPointerHandler();
 
     enum GrabPermission {
diff --git a/src/quick/handlers/qquicksinglepointhandler_p.h b/src/quick/handlers/qquicksinglepointhandler_p.h
index 386cea253a..7606b4f7ba 100644
--- a/src/quick/handlers/qquicksinglepointhandler_p.h
+++ b/src/quick/handlers/qquicksinglepointhandler_p.h
@@ -111,7 +111,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickSinglePointHandler : public QQuickPointerDevi
     Q_PROPERTY(Qt::MouseButtons acceptedButtons READ acceptedButtons WRITE setAcceptedButtons NOTIFY acceptedButtonsChanged)
     Q_PROPERTY(QQuickHandlerPoint point READ point NOTIFY pointChanged)
 public:
-    explicit QQuickSinglePointHandler(QObject *parent = 0);
+    explicit QQuickSinglePointHandler(QObject *parent = nullptr);
     virtual ~QQuickSinglePointHandler() { }
 
     Qt::MouseButtons acceptedButtons() const { return m_acceptedButtons; }
diff --git a/src/quick/handlers/qquicktaphandler_p.h b/src/quick/handlers/qquicktaphandler_p.h
index 6504ec87f0..e92d2029ba 100644
--- a/src/quick/handlers/qquicktaphandler_p.h
+++ b/src/quick/handlers/qquicktaphandler_p.h
@@ -75,7 +75,7 @@ public:
     };
     Q_ENUM(GesturePolicy)
 
-    explicit QQuickTapHandler(QObject *parent = 0);
+    explicit QQuickTapHandler(QObject *parent = nullptr);
     ~QQuickTapHandler();
 
     bool isPressed() const { return m_pressed; }
diff --git a/src/quick/items/context2d/qquickcanvascontext_p.h b/src/quick/items/context2d/qquickcanvascontext_p.h
index 0746b7dcd3..95100d2912 100644
--- a/src/quick/items/context2d/qquickcanvascontext_p.h
+++ b/src/quick/items/context2d/qquickcanvascontext_p.h
@@ -69,7 +69,7 @@ class QQuickCanvasContext : public QObject
     Q_OBJECT
 
 public:
-    QQuickCanvasContext(QObject *parent = 0);
+    QQuickCanvasContext(QObject *parent = nullptr);
     ~QQuickCanvasContext();
 
     virtual QStringList contextNames() const = 0;
diff --git a/src/quick/items/context2d/qquickcanvasitem.cpp b/src/quick/items/context2d/qquickcanvasitem.cpp
index 0739889e67..59917ce531 100644
--- a/src/quick/items/context2d/qquickcanvasitem.cpp
+++ b/src/quick/items/context2d/qquickcanvasitem.cpp
@@ -71,7 +71,7 @@ public:
 };
 
 QQuickCanvasPixmap::QQuickCanvasPixmap(const QImage& image)
-    : m_pixmap(0)
+    : m_pixmap(nullptr)
     , m_image(image)
 {
 
@@ -123,7 +123,7 @@ QHash<QQmlEngine *,QQuickContext2DRenderThread*> QQuickContext2DRenderThread::re
 QMutex QQuickContext2DRenderThread::renderThreadsMutex;
 
 QQuickContext2DRenderThread::QQuickContext2DRenderThread(QQmlEngine *eng)
-    : QThread(eng), m_engine(eng), m_eventLoopQuitHack(0)
+    : QThread(eng), m_engine(eng), m_eventLoopQuitHack(nullptr)
 {
     Q_ASSERT(eng);
     m_eventLoopQuitHack = new QObject;
@@ -144,7 +144,7 @@ QQuickContext2DRenderThread::~QQuickContext2DRenderThread()
 
 QQuickContext2DRenderThread *QQuickContext2DRenderThread::instance(QQmlEngine *engine)
 {
-    QQuickContext2DRenderThread *thread = 0;
+    QQuickContext2DRenderThread *thread = nullptr;
     renderThreadsMutex.lock();
     if (renderThreads.contains(engine))
         thread = renderThreads.value(engine);
@@ -183,7 +183,7 @@ public:
 
 QQuickCanvasItemPrivate::QQuickCanvasItemPrivate()
     : QQuickItemPrivate()
-    , context(0)
+    , context(nullptr)
     , canvasSize(1, 1)
     , tileSize(1, 1)
     , hasCanvasSize(false)
@@ -192,9 +192,9 @@ QQuickCanvasItemPrivate::QQuickCanvasItemPrivate()
     , available(false)
     , renderTarget(QQuickCanvasItem::Image)
     , renderStrategy(QQuickCanvasItem::Immediate)
-    , textureProvider(0)
-    , node(0)
-    , nodeTexture(0)
+    , textureProvider(nullptr)
+    , node(nullptr)
+    , nodeTexture(nullptr)
 {
     implicitAntialiasing = true;
 }
@@ -634,16 +634,16 @@ void QQuickCanvasItem::releaseResources()
 
     if (d->context) {
         delete d->context;
-        d->context = 0;
+        d->context = nullptr;
     }
-    d->node = 0; // managed by the scene graph, just reset the pointer
+    d->node = nullptr; // managed by the scene graph, just reset the pointer
     if (d->textureProvider) {
         QQuickWindowQObjectCleanupJob::schedule(window(), d->textureProvider);
-        d->textureProvider = 0;
+        d->textureProvider = nullptr;
     }
     if (d->nodeTexture) {
         QQuickWindowQObjectCleanupJob::schedule(window(), d->nodeTexture);
-        d->nodeTexture = 0;
+        d->nodeTexture = nullptr;
     }
 }
 
@@ -663,12 +663,12 @@ void QQuickCanvasItem::invalidateSceneGraph()
     Q_D(QQuickCanvasItem);
     if (d->context)
         d->context->deleteLater();
-    d->context = 0;
-    d->node = 0; // managed by the scene graph, just reset the pointer
+    d->context = nullptr;
+    d->node = nullptr; // managed by the scene graph, just reset the pointer
     delete d->textureProvider;
-    d->textureProvider = 0;
+    d->textureProvider = nullptr;
     delete d->nodeTexture;
-    d->nodeTexture = 0;
+    d->nodeTexture = nullptr;
 }
 
 void QQuickCanvasItem::schedulePolish()
@@ -698,14 +698,14 @@ void QQuickCanvasItem::itemChange(QQuickItem::ItemChange change, const QQuickIte
         return;
     }
 
-    if (value.window== 0)
+    if (value.window== nullptr)
         return;
 
     d->window = value.window;
     QSGRenderContext *context = QQuickWindowPrivate::get(d->window)->context;
 
     // Rendering to FramebufferObject needs a valid OpenGL context.
-    if (context != 0 && (d->renderTarget != FramebufferObject || context->isValid())) {
+    if (context != nullptr && (d->renderTarget != FramebufferObject || context->isValid())) {
         // Defer the call. In some (arguably incorrect) cases we get here due
         // to ItemSceneChange with the user-supplied property values not yet
         // set. Work this around by a deferred invoke. (QTBUG-49692)
@@ -763,11 +763,11 @@ QSGNode *QQuickCanvasItem::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData
 
     if (!d->context || d->canvasWindow.size().isEmpty()) {
         if (d->textureProvider) {
-            d->textureProvider->tex = 0;
+            d->textureProvider->tex = nullptr;
             d->textureProvider->fireTextureChanged();
         }
         delete oldNode;
-        return 0;
+        return nullptr;
     }
 
     QSGInternalImageNode *node = static_cast<QSGInternalImageNode *>(oldNode);
@@ -792,13 +792,13 @@ QSGNode *QQuickCanvasItem::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData
     QSGTexture *texture = factory->textureForNextFrame(d->nodeTexture, window());
     if (!texture) {
         delete node;
-        d->node = 0;
-        d->nodeTexture = 0;
+        d->node = nullptr;
+        d->nodeTexture = nullptr;
         if (d->textureProvider) {
-            d->textureProvider->tex = 0;
+            d->textureProvider->tex = nullptr;
             d->textureProvider->fireTextureChanged();
         }
-        return 0;
+        return nullptr;
     }
 
     d->nodeTexture = texture;
@@ -833,7 +833,7 @@ QSGTextureProvider *QQuickCanvasItem::textureProvider() const
     if (!w || !w->isSceneGraphInitialized()
             || QThread::currentThread() != QQuickWindowPrivate::get(w)->context->thread()) {
         qWarning("QQuickCanvasItem::textureProvider: can only be queried on the rendering thread of an exposed window");
-        return 0;
+        return nullptr;
     }
 #endif
     if (!d->textureProvider)
@@ -879,7 +879,7 @@ void QQuickCanvasItem::getContext(QQmlV4Function *args)
 
     QString contextId = str->toQString();
 
-    if (d->context != 0) {
+    if (d->context != nullptr) {
         if (d->context->contextNames().contains(contextId, Qt::CaseInsensitive)) {
             args->setReturnValue(d->context->v4value());
             return;
diff --git a/src/quick/items/context2d/qquickcanvasitem_p.h b/src/quick/items/context2d/qquickcanvasitem_p.h
index 59de847680..7dc981a6eb 100644
--- a/src/quick/items/context2d/qquickcanvasitem_p.h
+++ b/src/quick/items/context2d/qquickcanvasitem_p.h
@@ -114,7 +114,7 @@ public:
     };
     Q_ENUM(RenderStrategy)
 
-    QQuickCanvasItem(QQuickItem *parent = 0);
+    QQuickCanvasItem(QQuickItem *parent = nullptr);
     ~QQuickCanvasItem();
 
     bool isAvailable() const;
diff --git a/src/quick/items/context2d/qquickcontext2d.cpp b/src/quick/items/context2d/qquickcontext2d.cpp
index 434765aaa1..af8048f2e4 100644
--- a/src/quick/items/context2d/qquickcontext2d.cpp
+++ b/src/quick/items/context2d/qquickcontext2d.cpp
@@ -641,7 +641,7 @@ public:
         o->defineDefaultProperty(QStringLiteral("createLinearGradient"), method_createLinearGradient, 0);
         o->defineDefaultProperty(QStringLiteral("strokeRect"), method_strokeRect, 0);
         o->defineDefaultProperty(QStringLiteral("closePath"), method_closePath, 0);
-        o->defineAccessorProperty(QStringLiteral("canvas"), QQuickJSContext2DPrototype::method_get_canvas, 0);
+        o->defineAccessorProperty(QStringLiteral("canvas"), QQuickJSContext2DPrototype::method_get_canvas, nullptr);
 
         return o->d();
     }
@@ -943,9 +943,9 @@ void QV4::Heap::QQuickJSContext2DImageData::init()
     QV4::Scope scope(internalClass->engine);
     QV4::ScopedObject o(scope, this);
 
-    o->defineAccessorProperty(QStringLiteral("width"), ::QQuickJSContext2DImageData::method_get_width, 0);
-    o->defineAccessorProperty(QStringLiteral("height"), ::QQuickJSContext2DImageData::method_get_height, 0);
-    o->defineAccessorProperty(QStringLiteral("data"), ::QQuickJSContext2DImageData::method_get_data, 0);
+    o->defineAccessorProperty(QStringLiteral("width"), ::QQuickJSContext2DImageData::method_get_width, nullptr);
+    o->defineAccessorProperty(QStringLiteral("height"), ::QQuickJSContext2DImageData::method_get_height, nullptr);
+    o->defineAccessorProperty(QStringLiteral("data"), ::QQuickJSContext2DImageData::method_get_data, nullptr);
 }
 
 DEFINE_OBJECT_VTABLE(QQuickJSContext2DImageData);
@@ -4051,10 +4051,10 @@ QMutex QQuickContext2D::mutex;
 QQuickContext2D::QQuickContext2D(QObject *parent)
     : QQuickCanvasContext(parent)
     , m_buffer(new QQuickContext2DCommandBuffer)
-    , m_v4engine(0)
-    , m_surface(0)
-    , m_glContext(0)
-    , m_thread(0)
+    , m_v4engine(nullptr)
+    , m_surface(nullptr)
+    , m_glContext(nullptr)
+    , m_thread(nullptr)
     , m_grabbed(false)
 {
 }
@@ -4062,7 +4062,7 @@ QQuickContext2D::QQuickContext2D(QObject *parent)
 QQuickContext2D::~QQuickContext2D()
 {
     mutex.lock();
-    m_texture->setItem(0);
+    m_texture->setItem(nullptr);
     delete m_buffer;
 
     if (m_renderTarget == QQuickCanvasItem::FramebufferObject) {
@@ -4242,7 +4242,7 @@ QImage QQuickContext2D::toImage(const QRectF& bounds)
         } else {
 #if QT_CONFIG(opengl)
             QQuickWindow *window = m_canvas->window();
-            QOpenGLContext *ctx =  window ? window->openglContext() : 0;
+            QOpenGLContext *ctx =  window ? window->openglContext() : nullptr;
             if (ctx && ctx->isValid()) {
                 if (ctx == QOpenGLContext::currentContext()) {
                     flush();
@@ -4310,7 +4310,7 @@ QQuickContext2DEngineData::QQuickContext2DEngineData(QV4::ExecutionEngine *v4)
     gradientProto = proto;
 
     proto = scope.engine->newObject();
-    proto->defineAccessorProperty(scope.engine->id_length(), QQuickJSContext2DPixelData::proto_get_length, 0);
+    proto->defineAccessorProperty(scope.engine->id_length(), QQuickJSContext2DPixelData::proto_get_length, nullptr);
     pixelArrayProto = proto;
 }
 
@@ -4394,7 +4394,7 @@ void QQuickContext2D::setV4Engine(QV4::ExecutionEngine *engine)
     if (m_v4engine != engine) {
         m_v4engine = engine;
 
-        if (m_v4engine == 0)
+        if (m_v4engine == nullptr)
             return;
 
         QQuickContext2DEngineData *ed = engineData(engine);
diff --git a/src/quick/items/context2d/qquickcontext2d_p.h b/src/quick/items/context2d/qquickcontext2d_p.h
index 334bf08329..4cc07027b1 100644
--- a/src/quick/items/context2d/qquickcontext2d_p.h
+++ b/src/quick/items/context2d/qquickcontext2d_p.h
@@ -181,7 +181,7 @@ public:
         QQuickContext2D::TextBaseLineType textBaseline;
     };
 
-    QQuickContext2D(QObject *parent = 0);
+    QQuickContext2D(QObject *parent = nullptr);
     ~QQuickContext2D();
 
     QStringList contextNames() const override;
@@ -199,7 +199,7 @@ public:
     QQuickCanvasItem* canvas() const { return m_canvas; }
     QQuickContext2DCommandBuffer* buffer() const { return m_buffer; }
 
-    bool bufferValid() const { return m_buffer != 0; }
+    bool bufferValid() const { return m_buffer != nullptr; }
     void popState();
     void pushState();
     void reset();
diff --git a/src/quick/items/context2d/qquickcontext2dtexture.cpp b/src/quick/items/context2d/qquickcontext2dtexture.cpp
index a8bf14ba9f..69ff3b3852 100644
--- a/src/quick/items/context2d/qquickcontext2dtexture.cpp
+++ b/src/quick/items/context2d/qquickcontext2dtexture.cpp
@@ -93,12 +93,12 @@ struct GLAcquireContext {
 };
 #endif
 QQuickContext2DTexture::QQuickContext2DTexture()
-    : m_context(0)
+    : m_context(nullptr)
 #if QT_CONFIG(opengl)
-    , m_gl(0)
+    , m_gl(nullptr)
 #endif
-    , m_surface(0)
-    , m_item(0)
+    , m_surface(nullptr)
+    , m_item(nullptr)
     , m_canvasDevicePixelRatio(1)
     , m_canvasWindowChanged(false)
     , m_dirtyTexture(false)
@@ -159,7 +159,7 @@ void QQuickContext2DTexture::setItem(QQuickCanvasItem* item)
         m_context = (QQuickContext2D*) item->rawContext(); // FIXME
         m_state = m_context->state;
     } else {
-        m_context = 0;
+        m_context = nullptr;
     }
 }
 
@@ -257,7 +257,7 @@ void QQuickContext2DTexture::paintWithoutTiles(QQuickContext2DCommandBuffer *ccb
 
 bool QQuickContext2DTexture::canvasDestroyed()
 {
-    return m_item == 0;
+    return m_item == nullptr;
 }
 
 void QQuickContext2DTexture::paint(QQuickContext2DCommandBuffer *ccb)
@@ -349,7 +349,7 @@ QRect QQuickContext2DTexture::createTiles(const QRect& window)
             int ht = xx + h1;
             int vt = yy + v1;
 
-            QQuickContext2DTile* tile = 0;
+            QQuickContext2DTile* tile = nullptr;
 
             QPoint pos(ht * tw, vt * th);
             QRect rect(pos, m_tileSize);
@@ -420,9 +420,9 @@ static inline QSize npotAdjustedSize(const QSize &size)
 
 QQuickContext2DFBOTexture::QQuickContext2DFBOTexture()
     : QQuickContext2DTexture()
-    , m_fbo(0)
-    , m_multisampledFbo(0)
-    , m_paint_device(0)
+    , m_fbo(nullptr)
+    , m_multisampledFbo(nullptr)
+    , m_paint_device(nullptr)
 {
     m_displayTextures[0] = 0;
     m_displayTextures[1] = 0;
@@ -567,15 +567,15 @@ QPaintDevice* QQuickContext2DFBOTexture::beginPainting()
         delete m_fbo;
         delete m_multisampledFbo;
         delete m_paint_device;
-        m_fbo = 0;
-        m_multisampledFbo = 0;
-        m_paint_device = 0;
-        return 0;
+        m_fbo = nullptr;
+        m_multisampledFbo = nullptr;
+        m_paint_device = nullptr;
+        return nullptr;
     } else if (!m_fbo || m_canvasWindowChanged) {
         delete m_fbo;
         delete m_multisampledFbo;
         delete m_paint_device;
-        m_paint_device = 0;
+        m_paint_device = nullptr;
 
         m_fboSize = npotAdjustedSize(m_canvasWindow.size() * m_canvasDevicePixelRatio);
         m_canvasWindowChanged = false;
@@ -722,7 +722,7 @@ QPaintDevice* QQuickContext2DImageTexture::beginPainting()
     QQuickContext2DTexture::beginPainting();
 
     if (m_canvasWindow.size().isEmpty())
-        return 0;
+        return nullptr;
 
 
     if (m_canvasWindowChanged) {
diff --git a/src/quick/items/context2d/qquickcontext2dtexture_p.h b/src/quick/items/context2d/qquickcontext2dtexture_p.h
index 0e1fbd5d34..9c4870f328 100644
--- a/src/quick/items/context2d/qquickcontext2dtexture_p.h
+++ b/src/quick/items/context2d/qquickcontext2dtexture_p.h
@@ -146,7 +146,7 @@ protected:
     virtual QVector2D scaleFactor() const { return QVector2D(1, 1); }
 
     void paintWithoutTiles(QQuickContext2DCommandBuffer *ccb);
-    virtual QPaintDevice* beginPainting() {m_painting = true; return 0; }
+    virtual QPaintDevice* beginPainting() {m_painting = true; return nullptr; }
     virtual void endPainting() {m_painting = false;}
     virtual QQuickContext2DTile* createTile() const = 0;
     virtual void compositeTile(QQuickContext2DTile* tile) = 0;
diff --git a/src/quick/items/context2d/qquickcontext2dtile.cpp b/src/quick/items/context2d/qquickcontext2dtile.cpp
index d31fee7f91..0ee3de6bcc 100644
--- a/src/quick/items/context2d/qquickcontext2dtile.cpp
+++ b/src/quick/items/context2d/qquickcontext2dtile.cpp
@@ -49,7 +49,7 @@ QT_BEGIN_NAMESPACE
 QQuickContext2DTile::QQuickContext2DTile()
     : m_dirty(true)
     , m_rect(QRect(0, 0, 1, 1))
-    , m_device(0)
+    , m_device(nullptr)
 {
 }
 
@@ -95,12 +95,12 @@ QPainter* QQuickContext2DTile::createPainter(bool smooth, bool antialiasing)
         return &m_painter;
     }
 
-    return 0;
+    return nullptr;
 }
 #if QT_CONFIG(opengl)
 QQuickContext2DFBOTile::QQuickContext2DFBOTile()
     : QQuickContext2DTile()
-    , m_fbo(0)
+    , m_fbo(nullptr)
 {
 }
 
diff --git a/src/quick/items/qquickaccessibleattached.cpp b/src/quick/items/qquickaccessibleattached.cpp
index c559ee8887..252d6538e2 100644
--- a/src/quick/items/qquickaccessibleattached.cpp
+++ b/src/quick/items/qquickaccessibleattached.cpp
@@ -410,7 +410,7 @@ void QQuickAccessibleAttached::setIgnored(bool ignored)
 
 bool QQuickAccessibleAttached::doAction(const QString &actionName)
 {
-    QMetaMethod *sig = 0;
+    QMetaMethod *sig = nullptr;
     if (actionName == QAccessibleActionInterface::pressAction())
         sig = &sigPress;
     else if (actionName == QAccessibleActionInterface::toggleAction())
diff --git a/src/quick/items/qquickanchors.cpp b/src/quick/items/qquickanchors.cpp
index 4367e230bc..8ee4229013 100644
--- a/src/quick/items/qquickanchors.cpp
+++ b/src/quick/items/qquickanchors.cpp
@@ -252,35 +252,35 @@ void QQuickAnchorsPrivate::clearItem(QQuickItem *item)
     if (!item)
         return;
     if (fill == item)
-        fill = 0;
+        fill = nullptr;
     if (centerIn == item)
-        centerIn = 0;
+        centerIn = nullptr;
     if (leftAnchorItem == item) {
-        leftAnchorItem = 0;
+        leftAnchorItem = nullptr;
         usedAnchors &= ~QQuickAnchors::LeftAnchor;
     }
     if (rightAnchorItem == item) {
-        rightAnchorItem = 0;
+        rightAnchorItem = nullptr;
         usedAnchors &= ~QQuickAnchors::RightAnchor;
     }
     if (topAnchorItem == item) {
-        topAnchorItem = 0;
+        topAnchorItem = nullptr;
         usedAnchors &= ~QQuickAnchors::TopAnchor;
     }
     if (bottomAnchorItem == item) {
-        bottomAnchorItem = 0;
+        bottomAnchorItem = nullptr;
         usedAnchors &= ~QQuickAnchors::BottomAnchor;
     }
     if (vCenterAnchorItem == item) {
-        vCenterAnchorItem = 0;
+        vCenterAnchorItem = nullptr;
         usedAnchors &= ~QQuickAnchors::VCenterAnchor;
     }
     if (hCenterAnchorItem == item) {
-        hCenterAnchorItem = 0;
+        hCenterAnchorItem = nullptr;
         usedAnchors &= ~QQuickAnchors::HCenterAnchor;
     }
     if (baselineAnchorItem == item) {
-        baselineAnchorItem = 0;
+        baselineAnchorItem = nullptr;
         usedAnchors &= ~QQuickAnchors::BaselineAnchor;
     }
 }
@@ -462,7 +462,7 @@ void QQuickAnchorsPrivate::updateOnComplete()
 
     std::sort(dependencies, dependencies + 9);
 
-    QQuickItem *lastDependency = 0;
+    QQuickItem *lastDependency = nullptr;
     for (int i = 0; i < 9; ++i) {
         QQuickItem *dependency = dependencies[i];
         if (lastDependency != dependency) {
@@ -542,7 +542,7 @@ void QQuickAnchors::setFill(QQuickItem *f)
 
 void QQuickAnchors::resetFill()
 {
-    setFill(0);
+    setFill(nullptr);
 }
 
 QQuickItem *QQuickAnchors::centerIn() const
@@ -578,7 +578,7 @@ void QQuickAnchors::setCenterIn(QQuickItem* c)
 
 void QQuickAnchors::resetCenterIn()
 {
-    setCenterIn(0);
+    setCenterIn(nullptr);
 }
 
 bool QQuickAnchorsPrivate::calcStretch(QQuickItem *edge1Item,
diff --git a/src/quick/items/qquickanchors_p.h b/src/quick/items/qquickanchors_p.h
index bc1e6c10f5..bf83867abb 100644
--- a/src/quick/items/qquickanchors_p.h
+++ b/src/quick/items/qquickanchors_p.h
@@ -86,7 +86,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickAnchors : public QObject
     Q_PROPERTY(bool alignWhenCentered READ alignWhenCentered WRITE setAlignWhenCentered NOTIFY centerAlignedChanged)
 
 public:
-    QQuickAnchors(QQuickItem *item, QObject *parent=0);
+    QQuickAnchors(QQuickItem *item, QObject *parent=nullptr);
     virtual ~QQuickAnchors();
 
     enum Anchor
diff --git a/src/quick/items/qquickanchors_p_p.h b/src/quick/items/qquickanchors_p_p.h
index ae6ca02786..db929f99f3 100644
--- a/src/quick/items/qquickanchors_p_p.h
+++ b/src/quick/items/qquickanchors_p_p.h
@@ -60,7 +60,7 @@ QT_BEGIN_NAMESPACE
 class QQuickAnchorLine
 {
 public:
-    QQuickAnchorLine() : item(0), anchorLine(QQuickAnchors::InvalidAnchor) {}
+    QQuickAnchorLine() : item(nullptr), anchorLine(QQuickAnchors::InvalidAnchor) {}
     QQuickAnchorLine(QQuickItem *i, QQuickAnchors::Anchor l) : item(i), anchorLine(l) {}
     QQuickAnchorLine(QQuickItem *i, uint l)
         : item(i)
diff --git a/src/quick/items/qquickanimatedimage.cpp b/src/quick/items/qquickanimatedimage.cpp
index 5c9f893b63..26dfdb07a6 100644
--- a/src/quick/items/qquickanimatedimage.cpp
+++ b/src/quick/items/qquickanimatedimage.cpp
@@ -55,12 +55,12 @@ QT_BEGIN_NAMESPACE
 QQuickPixmap* QQuickAnimatedImagePrivate::infoForCurrentFrame(QQmlEngine *engine)
 {
     if (!movie)
-        return 0;
+        return nullptr;
 
     int current = movie->currentFrameNumber();
     if (!frameMap.contains(current)) {
         QUrl requestedUrl;
-        QQuickPixmap *pixmap = 0;
+        QQuickPixmap *pixmap = nullptr;
         if (engine && !movie->fileName().isEmpty()) {
             requestedUrl.setUrl(QString::fromUtf8("quickanimatedimage://%1#%2")
                                 .arg(movie->fileName())
@@ -295,7 +295,7 @@ void QQuickAnimatedImage::setSource(const QUrl &url)
 #if QT_CONFIG(qml_network)
     if (d->reply) {
         d->reply->deleteLater();
-        d->reply = 0;
+        d->reply = nullptr;
     }
 #endif
 
diff --git a/src/quick/items/qquickanimatedimage_p.h b/src/quick/items/qquickanimatedimage_p.h
index 678907a6e2..6b5db215bd 100644
--- a/src/quick/items/qquickanimatedimage_p.h
+++ b/src/quick/items/qquickanimatedimage_p.h
@@ -76,7 +76,7 @@ class Q_AUTOTEST_EXPORT QQuickAnimatedImage : public QQuickImage
     Q_PROPERTY(QSize sourceSize READ sourceSize NOTIFY sourceSizeChanged)
 
 public:
-    QQuickAnimatedImage(QQuickItem *parent=0);
+    QQuickAnimatedImage(QQuickItem *parent=nullptr);
     ~QQuickAnimatedImage();
 
     bool isPlaying() const;
diff --git a/src/quick/items/qquickanimatedsprite_p.h b/src/quick/items/qquickanimatedsprite_p.h
index 276e6fbb92..d7e60b909c 100644
--- a/src/quick/items/qquickanimatedsprite_p.h
+++ b/src/quick/items/qquickanimatedsprite_p.h
@@ -94,7 +94,7 @@ class Q_AUTOTEST_EXPORT QQuickAnimatedSprite : public QQuickItem
     Q_PROPERTY(int currentFrame READ currentFrame WRITE setCurrentFrame NOTIFY currentFrameChanged)
 
 public:
-    explicit QQuickAnimatedSprite(QQuickItem *parent = 0);
+    explicit QQuickAnimatedSprite(QQuickItem *parent = nullptr);
     enum LoopParameters {
         Infinite = -1
     };
diff --git a/src/quick/items/qquickborderimage.cpp b/src/quick/items/qquickborderimage.cpp
index 75e3a3dbed..4bf34f0417 100644
--- a/src/quick/items/qquickborderimage.cpp
+++ b/src/quick/items/qquickborderimage.cpp
@@ -278,7 +278,7 @@ void QQuickBorderImage::setSource(const QUrl &url)
 #if QT_CONFIG(qml_network)
     if (d->sciReply) {
         d->sciReply->deleteLater();
-        d->sciReply = 0;
+        d->sciReply = nullptr;
     }
 #endif
 
@@ -559,12 +559,12 @@ void QQuickBorderImage::sciRequestFinished()
     if (d->sciReply->error() != QNetworkReply::NoError) {
         d->status = Error;
         d->sciReply->deleteLater();
-        d->sciReply = 0;
+        d->sciReply = nullptr;
         emit statusChanged(d->status);
     } else {
         QQuickGridScaledImage sci(d->sciReply);
         d->sciReply->deleteLater();
-        d->sciReply = 0;
+        d->sciReply = nullptr;
         setGridScaledImage(sci);
     }
 }
@@ -629,7 +629,7 @@ QSGNode *QQuickBorderImage::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeDat
 
     if (!texture || width() <= 0 || height() <= 0) {
         delete oldNode;
-        return 0;
+        return nullptr;
     }
 
     QSGInternalImageNode *node = static_cast<QSGInternalImageNode *>(oldNode);
diff --git a/src/quick/items/qquickborderimage_p.h b/src/quick/items/qquickborderimage_p.h
index f43e6c8e1e..61bd26ba83 100644
--- a/src/quick/items/qquickborderimage_p.h
+++ b/src/quick/items/qquickborderimage_p.h
@@ -69,7 +69,7 @@ class Q_AUTOTEST_EXPORT QQuickBorderImage : public QQuickImageBase
     Q_PROPERTY(QSize sourceSize READ sourceSize NOTIFY sourceSizeChanged)
 
 public:
-    QQuickBorderImage(QQuickItem *parent=0);
+    QQuickBorderImage(QQuickItem *parent=nullptr);
     ~QQuickBorderImage();
 
     QQuickScaleGrid *border();
diff --git a/src/quick/items/qquickdrag.cpp b/src/quick/items/qquickdrag.cpp
index 6dc005a03c..d377b1dad4 100644
--- a/src/quick/items/qquickdrag.cpp
+++ b/src/quick/items/qquickdrag.cpp
@@ -67,8 +67,8 @@ public:
         return static_cast<QQuickDragAttachedPrivate *>(QObjectPrivate::get(attached)); }
 
     QQuickDragAttachedPrivate()
-        : attachedItem(0)
-        , mimeData(0)
+        : attachedItem(nullptr)
+        , mimeData(nullptr)
         , proposedAction(Qt::MoveAction)
         , supportedActions(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction)
         , active(false)
@@ -231,7 +231,7 @@ void QQuickDragAttachedPrivate::deliverLeaveEvent()
     if (window) {
         QDragLeaveEvent event;
         deliverEvent(window, &event);
-        window = 0;
+        window = nullptr;
     }
 }
 
@@ -686,7 +686,7 @@ int QQuickDragAttached::drop()
         return acceptedAction;
     d->active = false;
 
-    QObject *target = 0;
+    QObject *target = nullptr;
 
     if (d->window) {
         QPoint scenePos = d->attachedItem->mapToScene(d->hotSpot).toPoint();
@@ -732,7 +732,7 @@ void QQuickDragAttached::cancel()
     d->deliverLeaveEvent();
 
     if (d->target) {
-        d->target = 0;
+        d->target = nullptr;
         emit targetChanged();
     }
 
@@ -783,7 +783,7 @@ Qt::DropAction QQuickDragAttachedPrivate::startDrag(Qt::DropActions supportedAct
     deliverLeaveEvent();
 
     if (target) {
-        target = 0;
+        target = nullptr;
         emit q->targetChanged();
     }
 
@@ -836,7 +836,7 @@ void QQuickDragAttached::startDrag(QQmlV4Function *args)
 }
 
 QQuickDrag::QQuickDrag(QObject *parent)
-: QObject(parent), _target(0), _axis(XAndYAxis), _xmin(-FLT_MAX),
+: QObject(parent), _target(nullptr), _axis(XAndYAxis), _xmin(-FLT_MAX),
 _xmax(FLT_MAX), _ymin(-FLT_MAX), _ymax(FLT_MAX), _active(false), _filterChildren(false),
   _smoothed(true), _threshold(QGuiApplication::styleHints()->startDragDistance())
 {
@@ -861,9 +861,9 @@ void QQuickDrag::setTarget(QQuickItem *t)
 
 void QQuickDrag::resetTarget()
 {
-    if (_target == 0)
+    if (_target == nullptr)
         return;
-    _target = 0;
+    _target = nullptr;
     emit targetChanged();
 }
 
diff --git a/src/quick/items/qquickdrag_p.h b/src/quick/items/qquickdrag_p.h
index 17e9d8c690..6bfbae74c9 100644
--- a/src/quick/items/qquickdrag_p.h
+++ b/src/quick/items/qquickdrag_p.h
@@ -83,7 +83,7 @@ class QQuickDragGrabber
     typedef QIntrusiveList<Item, &Item::node> ItemList;
 
 public:
-    QQuickDragGrabber() : m_target(0) {}
+    QQuickDragGrabber() : m_target(nullptr) {}
     ~QQuickDragGrabber() { while (!m_items.isEmpty()) delete m_items.first(); }
 
 
@@ -94,10 +94,10 @@ public:
         else if (!m_items.isEmpty())
             return *m_items.first();
         else
-            return 0;
+            return nullptr;
     }
     void setTarget(QObject *target) { m_target = target; }
-    void resetTarget() { m_target = 0; }
+    void resetTarget() { m_target = nullptr; }
 
     bool isEmpty() const { return m_items.isEmpty(); }
 
@@ -136,7 +136,7 @@ class QQuickDragMimeData : public QMimeData
     Q_OBJECT
 public:
     QQuickDragMimeData()
-        : m_source(0)
+        : m_source(nullptr)
     {
     }
 
@@ -173,7 +173,7 @@ class Q_AUTOTEST_EXPORT QQuickDrag : public QObject
     //### consider drag and drop
 
 public:
-    QQuickDrag(QObject *parent=0);
+    QQuickDrag(QObject *parent=nullptr);
     ~QQuickDrag();
 
     enum DragType { None, Automatic, Internal };
diff --git a/src/quick/items/qquickdroparea.cpp b/src/quick/items/qquickdroparea.cpp
index c7606f90e1..b77fb40cb1 100644
--- a/src/quick/items/qquickdroparea.cpp
+++ b/src/quick/items/qquickdroparea.cpp
@@ -78,7 +78,7 @@ public:
 };
 
 QQuickDropAreaPrivate::QQuickDropAreaPrivate()
-    : drag(0)
+    : drag(nullptr)
     , containsDrag(false)
 {
 }
@@ -303,7 +303,7 @@ void QQuickDropArea::dragLeaveEvent(QDragLeaveEvent *)
     emit exited();
 
     d->containsDrag = false;
-    d->source = 0;
+    d->source = nullptr;
     emit containsDragChanged();
     if (d->drag)
         emit d->drag->sourceChanged();
@@ -328,7 +328,7 @@ void QQuickDropArea::dropEvent(QDropEvent *event)
     emit dropped(&dragTargetEvent);
 
     d->containsDrag = false;
-    d->source = 0;
+    d->source = nullptr;
     emit containsDragChanged();
     if (d->drag)
         emit d->drag->sourceChanged();
diff --git a/src/quick/items/qquickevents_p_p.h b/src/quick/items/qquickevents_p_p.h
index 0f7e44e0e2..d6aca87f84 100644
--- a/src/quick/items/qquickevents_p_p.h
+++ b/src/quick/items/qquickevents_p_p.h
@@ -84,7 +84,7 @@ class QQuickKeyEvent : public QObject
 
 public:
     QQuickKeyEvent()
-        : event(QEvent::None, 0, 0)
+        : event(QEvent::None, 0, nullptr)
     {}
 
     void reset(QEvent::Type type, int key, Qt::KeyboardModifiers modifiers,
@@ -137,12 +137,12 @@ public:
     QQuickMouseEvent()
       : _x(0), _y(0), _button(Qt::NoButton), _buttons(Qt::NoButton), _modifiers(Qt::NoModifier)
       , _source(Qt::MouseEventNotSynthesized), _wasHeld(false), _isClick(false), _accepted(false)
-      , _flags(Qt::MouseEventFlags(0))
+      , _flags(Qt::MouseEventFlags(nullptr))
     {}
 
     void reset(qreal x, qreal y, Qt::MouseButton button, Qt::MouseButtons buttons,
                Qt::KeyboardModifiers modifiers, bool isClick = false, bool wasHeld = false,
-               Qt::MouseEventFlags flags = 0)
+               Qt::MouseEventFlags flags = nullptr)
     {
         _x = x;
         _y = y;
diff --git a/src/quick/items/qquickflickable.cpp b/src/quick/items/qquickflickable.cpp
index 95d1229c8d..8cb64377cc 100644
--- a/src/quick/items/qquickflickable.cpp
+++ b/src/quick/items/qquickflickable.cpp
@@ -172,13 +172,13 @@ class QQuickFlickableReboundTransition : public QQuickTransitionManager
 {
 public:
     QQuickFlickableReboundTransition(QQuickFlickable *f, const QString &name)
-        : flickable(f), axisData(0), propName(name), active(false)
+        : flickable(f), axisData(nullptr), propName(name), active(false)
     {
     }
 
     ~QQuickFlickableReboundTransition()
     {
-        flickable = 0;
+        flickable = nullptr;
     }
 
     bool startTransition(QQuickFlickablePrivate::AxisData *data, qreal toPos) {
@@ -252,12 +252,12 @@ QQuickFlickablePrivate::QQuickFlickablePrivate()
     , lastPressTime(0)
     , deceleration(QML_FLICK_DEFAULTDECELERATION)
     , maxVelocity(QML_FLICK_DEFAULTMAXVELOCITY), reportedVelocitySmoothing(100)
-    , delayedPressEvent(0), pressDelay(0), fixupDuration(400)
-    , flickBoost(1.0), fixupMode(Normal), vTime(0), visibleArea(0)
+    , delayedPressEvent(nullptr), pressDelay(0), fixupDuration(400)
+    , flickBoost(1.0), fixupMode(Normal), vTime(0), visibleArea(nullptr)
     , flickableDirection(QQuickFlickable::AutoFlickDirection)
     , boundsBehavior(QQuickFlickable::DragAndOvershootBounds)
     , boundsMovement(QQuickFlickable::FollowBoundsBehavior)
-    , rebound(0)
+    , rebound(nullptr)
 {
 }
 
@@ -317,7 +317,7 @@ void QQuickFlickablePrivate::itemGeometryChanged(QQuickItem *item, QQuickGeometr
 {
     Q_Q(QQuickFlickable);
     if (item == contentItem) {
-        Qt::Orientations orient = 0;
+        Qt::Orientations orient = nullptr;
         if (change.xChange())
             orient |= Qt::Horizontal;
         if (change.yChange())
@@ -1555,7 +1555,7 @@ void QQuickFlickablePrivate::clearDelayedPress()
     if (delayedPressEvent) {
         delayedPressTimer.stop();
         delete delayedPressEvent;
-        delayedPressEvent = 0;
+        delayedPressEvent = nullptr;
     }
 }
 
@@ -1565,7 +1565,7 @@ void QQuickFlickablePrivate::replayDelayedPress()
     if (delayedPressEvent) {
         // Losing the grab will clear the delayed press event; take control of it here
         QScopedPointer<QMouseEvent> mouseEvent(delayedPressEvent);
-        delayedPressEvent = 0;
+        delayedPressEvent = nullptr;
         delayedPressTimer.stop();
 
         // If we have the grab, release before delivering the event
@@ -1858,7 +1858,7 @@ int QQuickFlickablePrivate::data_count(QQmlListProperty<QObject> *)
 QObject *QQuickFlickablePrivate::data_at(QQmlListProperty<QObject> *, int)
 {
     // XXX todo
-    return 0;
+    return nullptr;
 }
 
 void QQuickFlickablePrivate::data_clear(QQmlListProperty<QObject> *)
diff --git a/src/quick/items/qquickflickable_p.h b/src/quick/items/qquickflickable_p.h
index 4ad01323a4..939e3af698 100644
--- a/src/quick/items/qquickflickable_p.h
+++ b/src/quick/items/qquickflickable_p.h
@@ -115,7 +115,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickFlickable : public QQuickItem
     Q_CLASSINFO("DefaultProperty", "flickableData")
 
 public:
-    QQuickFlickable(QQuickItem *parent=0);
+    QQuickFlickable(QQuickItem *parent=nullptr);
     ~QQuickFlickable();
 
     QQmlListProperty<QObject> flickableData();
diff --git a/src/quick/items/qquickflickable_p_p.h b/src/quick/items/qquickflickable_p_p.h
index c2531e6012..08f069e830 100644
--- a/src/quick/items/qquickflickable_p_p.h
+++ b/src/quick/items/qquickflickable_p_p.h
@@ -99,7 +99,7 @@ public:
     struct AxisData {
         AxisData(QQuickFlickablePrivate *fp, void (QQuickFlickablePrivate::*func)(qreal))
             : move(fp, func)
-            , transitionToBounds(0)
+            , transitionToBounds(nullptr)
             , viewSize(-1), lastPos(0), previousDragDelta(0), velocity(0), startMargin(0), endMargin(0)
             , origin(0), overshoot(0)
             , transitionTo(0)
@@ -284,7 +284,7 @@ class QQuickFlickableVisibleArea : public QObject
     Q_PROPERTY(qreal heightRatio READ heightRatio NOTIFY heightRatioChanged)
 
 public:
-    QQuickFlickableVisibleArea(QQuickFlickable *parent=0);
+    QQuickFlickableVisibleArea(QQuickFlickable *parent=nullptr);
 
     qreal xPosition() const;
     qreal widthRatio() const;
diff --git a/src/quick/items/qquickflipable.cpp b/src/quick/items/qquickflipable.cpp
index 4273ed4881..fbba8eed89 100644
--- a/src/quick/items/qquickflipable.cpp
+++ b/src/quick/items/qquickflipable.cpp
@@ -68,7 +68,7 @@ class QQuickFlipablePrivate : public QQuickItemPrivate
 {
     Q_DECLARE_PUBLIC(QQuickFlipable)
 public:
-    QQuickFlipablePrivate() : current(QQuickFlipable::Front), front(0), back(0), sideDirty(false) {}
+    QQuickFlipablePrivate() : current(QQuickFlipable::Front), front(nullptr), back(nullptr), sideDirty(false) {}
 
     void transformChanged() override;
     void updateSide();
@@ -178,7 +178,7 @@ void QQuickFlipable::setBack(QQuickItem *back)
         qmlWarning(this) << tr("back is a write-once property");
         return;
     }
-    if (back == 0)
+    if (back == nullptr)
         return;
     d->back = back;
     d->back->setParentItem(this);
diff --git a/src/quick/items/qquickflipable_p.h b/src/quick/items/qquickflipable_p.h
index ec922725ef..d70cd02d35 100644
--- a/src/quick/items/qquickflipable_p.h
+++ b/src/quick/items/qquickflipable_p.h
@@ -74,7 +74,7 @@ class Q_AUTOTEST_EXPORT QQuickFlipable : public QQuickItem
     //### flipAxis
     //### flipRotation
 public:
-    QQuickFlipable(QQuickItem *parent=0);
+    QQuickFlipable(QQuickItem *parent=nullptr);
     ~QQuickFlipable();
 
     QQuickItem *front() const;
diff --git a/src/quick/items/qquickfocusscope_p.h b/src/quick/items/qquickfocusscope_p.h
index b65e543343..af750fc127 100644
--- a/src/quick/items/qquickfocusscope_p.h
+++ b/src/quick/items/qquickfocusscope_p.h
@@ -59,7 +59,7 @@ class Q_AUTOTEST_EXPORT QQuickFocusScope : public QQuickItem
 {
     Q_OBJECT
 public:
-    QQuickFocusScope(QQuickItem *parent=0);
+    QQuickFocusScope(QQuickItem *parent=nullptr);
     virtual ~QQuickFocusScope();
 };
 
diff --git a/src/quick/items/qquickframebufferobject.cpp b/src/quick/items/qquickframebufferobject.cpp
index 9b133a823e..48f8b8db5c 100644
--- a/src/quick/items/qquickframebufferobject.cpp
+++ b/src/quick/items/qquickframebufferobject.cpp
@@ -57,7 +57,7 @@ public:
     QQuickFramebufferObjectPrivate()
         : followsItemSize(true)
         , mirrorVertically(false)
-        , node(0)
+        , node(nullptr)
     {
     }
 
@@ -194,10 +194,10 @@ class QSGFramebufferObjectNode : public QSGTextureProvider, public QSGSimpleText
 
 public:
     QSGFramebufferObjectNode()
-        : window(0)
-        , fbo(0)
-        , msDisplayFbo(0)
-        , renderer(0)
+        : window(nullptr)
+        , fbo(nullptr)
+        , msDisplayFbo(nullptr)
+        , renderer(nullptr)
         , renderPending(true)
         , invalidatePending(false)
         , devicePixelRatio(1)
@@ -282,13 +282,13 @@ QSGNode *QQuickFramebufferObject::updatePaintNode(QSGNode *node, UpdatePaintNode
     // that easily so with this logic, the renderer only goes away when
     // the scenegraph is invalidated or it is removed from the scene.
     if (!n && (width() <= 0 || height() <= 0))
-        return 0;
+        return nullptr;
 
     Q_D(QQuickFramebufferObject);
 
     if (!n) {
         if (!isOpenGL(d->sceneGraphRenderContext()))
-            return 0;
+            return nullptr;
         if (!d->node)
             d->node = new QSGFramebufferObjectNode;
         n = d->node;
@@ -315,9 +315,9 @@ QSGNode *QQuickFramebufferObject::updatePaintNode(QSGNode *node, UpdatePaintNode
     if (n->fbo && ((d->followsItemSize && n->fbo->size() != desiredFboSize) || n->invalidatePending)) {
         delete n->texture();
         delete n->fbo;
-        n->fbo = 0;
+        n->fbo = nullptr;
         delete n->msDisplayFbo;
-        n->msDisplayFbo = 0;
+        n->msDisplayFbo = nullptr;
         n->invalidatePending = false;
     }
 
@@ -368,10 +368,10 @@ QSGTextureProvider *QQuickFramebufferObject::textureProvider() const
     QQuickWindow *w = window();
     if (!w || !w->openglContext() || QThread::currentThread() != w->openglContext()->thread()) {
         qWarning("QQuickFramebufferObject::textureProvider: can only be queried on the rendering thread of an exposed window");
-        return 0;
+        return nullptr;
     }
     if (!isOpenGL(d->sceneGraphRenderContext()))
-        return 0;
+        return nullptr;
     if (!d->node)
         d->node = new QSGFramebufferObjectNode;
     return d->node;
@@ -386,13 +386,13 @@ void QQuickFramebufferObject::releaseResources()
     // forget about the node. Since it is the node we returned from updatePaintNode
     // it will be managed by the scene graph.
     Q_D(QQuickFramebufferObject);
-    d->node = 0;
+    d->node = nullptr;
 }
 
 void QQuickFramebufferObject::invalidateSceneGraph()
 {
     Q_D(QQuickFramebufferObject);
-    d->node = 0;
+    d->node = nullptr;
 }
 
 /*!
@@ -411,7 +411,7 @@ void QQuickFramebufferObject::invalidateSceneGraph()
  * GUI thread is blocked.
  */
 QQuickFramebufferObject::Renderer::Renderer()
-    : data(0)
+    : data(nullptr)
 {
 }
 
@@ -439,7 +439,7 @@ QQuickFramebufferObject::Renderer::~Renderer()
  */
 QOpenGLFramebufferObject *QQuickFramebufferObject::Renderer::framebufferObject() const
 {
-    return data ? ((QSGFramebufferObjectNode *) data)->fbo : 0;
+    return data ? ((QSGFramebufferObjectNode *) data)->fbo : nullptr;
 }
 
 /*!
diff --git a/src/quick/items/qquickgenericshadereffect.cpp b/src/quick/items/qquickgenericshadereffect.cpp
index 305ef7e778..248c2b6ec3 100644
--- a/src/quick/items/qquickgenericshadereffect.cpp
+++ b/src/quick/items/qquickgenericshadereffect.cpp
@@ -61,7 +61,7 @@ QQuickGenericShaderEffect::QQuickGenericShaderEffect(QQuickShaderEffect *item, Q
     , m_mgr(nullptr)
     , m_fragNeedsUpdate(true)
     , m_vertNeedsUpdate(true)
-    , m_dirty(0)
+    , m_dirty(nullptr)
 {
     qRegisterMetaType<QSGGuiThreadShaderEffectManager::ShaderInfo::Type>("ShaderInfo::Type");
     for (int i = 0; i < NShader; ++i)
@@ -134,7 +134,7 @@ void QQuickGenericShaderEffect::setMesh(const QVariant &mesh)
         return;
 
     if (m_mesh)
-        disconnect(m_mesh, SIGNAL(geometryChanged()), this, 0);
+        disconnect(m_mesh, SIGNAL(geometryChanged()), this, nullptr);
 
     m_mesh = newMesh;
 
@@ -290,7 +290,7 @@ QSGNode *QQuickGenericShaderEffect::handleUpdatePaintNode(QSGNode *oldNode, QQui
         m_dirty &= ~QSGShaderEffectNode::DirtyShaderGeometry;
     }
 
-    m_dirty = 0;
+    m_dirty = nullptr;
     for (int i = 0; i < NShader; ++i) {
         m_dirtyConstants[i].clear();
         m_dirtyTextures[i].clear();
diff --git a/src/quick/items/qquickgenericshadereffect_p.h b/src/quick/items/qquickgenericshadereffect_p.h
index ab19816493..3f6f92921b 100644
--- a/src/quick/items/qquickgenericshadereffect_p.h
+++ b/src/quick/items/qquickgenericshadereffect_p.h
@@ -66,7 +66,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickGenericShaderEffect : public QObject
     Q_OBJECT
 
 public:
-    QQuickGenericShaderEffect(QQuickShaderEffect *item, QObject *parent = 0);
+    QQuickGenericShaderEffect(QQuickShaderEffect *item, QObject *parent = nullptr);
     ~QQuickGenericShaderEffect();
 
     QByteArray fragmentShader() const { return m_fragShader; }
diff --git a/src/quick/items/qquickgraphicsinfo.cpp b/src/quick/items/qquickgraphicsinfo.cpp
index a36133874b..e809bdd827 100644
--- a/src/quick/items/qquickgraphicsinfo.cpp
+++ b/src/quick/items/qquickgraphicsinfo.cpp
@@ -63,7 +63,7 @@ QT_BEGIN_NAMESPACE
 
 QQuickGraphicsInfo::QQuickGraphicsInfo(QQuickItem *item)
     : QObject(item)
-    , m_window(0)
+    , m_window(nullptr)
     , m_api(Unknown)
     , m_shaderType(UnknownShadingLanguage)
     , m_shaderCompilationType(ShaderCompilationType(0))
diff --git a/src/quick/items/qquickgridview.cpp b/src/quick/items/qquickgridview.cpp
index b2adf96f0e..1f5cda9d18 100644
--- a/src/quick/items/qquickgridview.cpp
+++ b/src/quick/items/qquickgridview.cpp
@@ -230,7 +230,7 @@ public:
         : flow(QQuickGridView::FlowLeftToRight)
         , cellWidth(100), cellHeight(100), columns(1)
         , snapMode(QQuickGridView::NoSnap)
-        , highlightXAnimator(0), highlightYAnimator(0)
+        , highlightXAnimator(nullptr), highlightYAnimator(nullptr)
     {}
     ~QQuickGridViewPrivate()
     {
@@ -390,7 +390,7 @@ FxViewItem *QQuickGridViewPrivate::snapItemAt(qreal pos) const
         if (itemTop+rowSize()/2 >= pos && itemTop - rowSize()/2 <= pos)
             return item;
     }
-    return 0;
+    return nullptr;
 }
 
 int QQuickGridViewPrivate::snapIndex() const
@@ -508,7 +508,7 @@ bool QQuickGridViewPrivate::addVisibleItems(qreal fillFrom, qreal fillTo, qreal
     }
 
     int colNum = qFloor((colPos+colSize()/2) / colSize());
-    FxGridItemSG *item = 0;
+    FxGridItemSG *item = nullptr;
     bool changed = false;
 
     QQmlIncubator::IncubationMode incubationMode = doBuffer ? QQmlIncubator::Asynchronous : QQmlIncubator::AsynchronousIfNested;
@@ -580,7 +580,7 @@ void QQuickGridViewPrivate::removeItem(FxViewItem *item)
 
 bool QQuickGridViewPrivate::removeNonVisibleItems(qreal bufferFrom, qreal bufferTo)
 {
-    FxGridItemSG *item = 0;
+    FxGridItemSG *item = nullptr;
     bool changed = false;
 
     while (visibleItems.count() > 1
@@ -700,14 +700,14 @@ void QQuickGridViewPrivate::createHighlight()
     bool changed = false;
     if (highlight) {
         if (trackedItem == highlight)
-            trackedItem = 0;
+            trackedItem = nullptr;
         delete highlight;
-        highlight = 0;
+        highlight = nullptr;
 
         delete highlightXAnimator;
         delete highlightYAnimator;
-        highlightXAnimator = 0;
-        highlightYAnimator = 0;
+        highlightXAnimator = nullptr;
+        highlightYAnimator = nullptr;
 
         changed = true;
     }
@@ -2410,7 +2410,7 @@ bool QQuickGridViewPrivate::applyInsertionChange(const QQmlChangeSet::Change &ch
         } else {
             while (i >= 0) {
                 // item is before first visible e.g. in cache buffer
-                FxViewItem *item = 0;
+                FxViewItem *item = nullptr;
                 if (change.isMove() && (item = currentChanges.removedItems.take(change.moveKey(modelIndex + i))))
                     item->index = modelIndex + i;
                 if (!item)
@@ -2462,7 +2462,7 @@ bool QQuickGridViewPrivate::applyInsertionChange(const QQmlChangeSet::Change &ch
         int i = 0;
         int to = buffer+displayMarginEnd+tempPos+size()-1;
         while (i < count && rowPos <= to + rowSize()*(columns - colNum)/qreal(columns+1)) {
-            FxViewItem *item = 0;
+            FxViewItem *item = nullptr;
             if (change.isMove() && (item = currentChanges.removedItems.take(change.moveKey(modelIndex + i))))
                 item->index = modelIndex + i;
             bool newItem = !item;
diff --git a/src/quick/items/qquickgridview_p.h b/src/quick/items/qquickgridview_p.h
index 5c6da2b433..7daeaf41a1 100644
--- a/src/quick/items/qquickgridview_p.h
+++ b/src/quick/items/qquickgridview_p.h
@@ -81,7 +81,7 @@ public:
     };
     Q_ENUM(Flow)
 
-    QQuickGridView(QQuickItem *parent=0);
+    QQuickGridView(QQuickItem *parent=nullptr);
     ~QQuickGridView();
 
     void setHighlightFollowsCurrentItem(bool) override;
diff --git a/src/quick/items/qquickimage.cpp b/src/quick/items/qquickimage.cpp
index 7e13e5e0e1..dc2cd17b4e 100644
--- a/src/quick/items/qquickimage.cpp
+++ b/src/quick/items/qquickimage.cpp
@@ -57,7 +57,7 @@ class QQuickImageTextureProvider : public QSGTextureProvider
     Q_OBJECT
 public:
     QQuickImageTextureProvider()
-        : m_texture(0)
+        : m_texture(nullptr)
         , m_smooth(false)
     {
     }
@@ -97,7 +97,7 @@ QQuickImagePrivate::QQuickImagePrivate()
     , mipmap(false)
     , hAlign(QQuickImage::AlignHCenter)
     , vAlign(QQuickImage::AlignVCenter)
-    , provider(0)
+    , provider(nullptr)
 {
 }
 
@@ -583,7 +583,7 @@ QSGTextureProvider *QQuickImage::textureProvider() const
 
     if (!d->window || !d->sceneGraphRenderContext() || QThread::currentThread() != d->sceneGraphRenderContext()->thread()) {
         qWarning("QQuickImage::textureProvider: can only be queried on the rendering thread of an exposed window");
-        return 0;
+        return nullptr;
     }
 
     if (!d->provider) {
@@ -601,7 +601,7 @@ void QQuickImage::invalidateSceneGraph()
 {
     Q_D(QQuickImage);
     delete d->provider;
-    d->provider = 0;
+    d->provider = nullptr;
 }
 
 void QQuickImage::releaseResources()
@@ -609,7 +609,7 @@ void QQuickImage::releaseResources()
     Q_D(QQuickImage);
     if (d->provider) {
         QQuickWindowQObjectCleanupJob::schedule(window(), d->provider);
-        d->provider = 0;
+        d->provider = nullptr;
     }
 }
 
@@ -628,7 +628,7 @@ QSGNode *QQuickImage::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
 
     if (!texture || width() <= 0 || height() <= 0) {
         delete oldNode;
-        return 0;
+        return nullptr;
     }
 
     QSGInternalImageNode *node = static_cast<QSGInternalImageNode *>(oldNode);
@@ -736,7 +736,7 @@ QSGNode *QQuickImage::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
         || nsrect.isEmpty()
         || !qt_is_finite(nsrect.width()) || !qt_is_finite(nsrect.height())) {
         delete node;
-        return 0;
+        return nullptr;
     }
 
     if (d->pixmapChanged) {
diff --git a/src/quick/items/qquickimage_p.h b/src/quick/items/qquickimage_p.h
index 09b2c1eeb7..7fb4413900 100644
--- a/src/quick/items/qquickimage_p.h
+++ b/src/quick/items/qquickimage_p.h
@@ -70,7 +70,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickImage : public QQuickImageBase
     Q_PROPERTY(bool autoTransform READ autoTransform WRITE setAutoTransform NOTIFY autoTransformChanged REVISION 2)
 
 public:
-    QQuickImage(QQuickItem *parent=0);
+    QQuickImage(QQuickItem *parent=nullptr);
     ~QQuickImage();
 
     enum HAlignment { AlignLeft = Qt::AlignLeft,
diff --git a/src/quick/items/qquickimagebase_p.h b/src/quick/items/qquickimagebase_p.h
index 4d4a6fceaf..eb04a1d162 100644
--- a/src/quick/items/qquickimagebase_p.h
+++ b/src/quick/items/qquickimagebase_p.h
@@ -70,7 +70,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickImageBase : public QQuickImplicitSizeItem
     Q_PROPERTY(bool mirror READ mirror WRITE setMirror NOTIFY mirrorChanged)
 
 public:
-    QQuickImageBase(QQuickItem *parent=0);
+    QQuickImageBase(QQuickItem *parent=nullptr);
     ~QQuickImageBase();
     enum Status { Null, Ready, Loading, Error };
     Q_ENUM(Status)
diff --git a/src/quick/items/qquickitem.cpp b/src/quick/items/qquickitem.cpp
index 18e0d30ed5..3a88c49e8d 100644
--- a/src/quick/items/qquickitem.cpp
+++ b/src/quick/items/qquickitem.cpp
@@ -89,7 +89,7 @@ Q_DECLARE_LOGGING_CATEGORY(DBG_MOUSE_TARGET)
 Q_DECLARE_LOGGING_CATEGORY(DBG_HOVER_TRACE)
 Q_DECLARE_LOGGING_CATEGORY(lcTransient)
 
-void debugFocusTree(QQuickItem *item, QQuickItem *scope = 0, int depth = 1)
+void debugFocusTree(QQuickItem *item, QQuickItem *scope = nullptr, int depth = 1)
 {
     if (DBG_FOCUS().isEnabled(QtDebugMsg)) {
         qCDebug(DBG_FOCUS)
@@ -303,9 +303,9 @@ void QQuickContents::itemChildAdded(QQuickItem *, QQuickItem *item)
 }
 
 QQuickItemKeyFilter::QQuickItemKeyFilter(QQuickItem *item)
-: m_processPost(false), m_next(0)
+: m_processPost(false), m_next(nullptr)
 {
-    QQuickItemPrivate *p = item?QQuickItemPrivate::get(item):0;
+    QQuickItemPrivate *p = item?QQuickItemPrivate::get(item):nullptr;
     if (p) {
         m_next = p->extra.value().keyHandler;
         p->extra->keyHandler = this;
@@ -786,7 +786,7 @@ const SigMap sigMap[] = {
     { Qt::Key_Menu, "menuPressed" },
     { Qt::Key_VolumeUp, "volumeUpPressed" },
     { Qt::Key_VolumeDown, "volumeDownPressed" },
-    { 0, 0 }
+    { 0, nullptr }
 };
 
 QByteArray QQuickKeysAttached::keyToSignal(int key)
@@ -1570,7 +1570,7 @@ QQuickKeysAttached *QQuickKeysAttached::qmlAttachedProperties(QObject *obj)
 */
 
 
-QQuickLayoutMirroringAttached::QQuickLayoutMirroringAttached(QObject *parent) : QObject(parent), itemPrivate(0)
+QQuickLayoutMirroringAttached::QQuickLayoutMirroringAttached(QObject *parent) : QObject(parent), itemPrivate(nullptr)
 {
     if (QQuickItem *item = qobject_cast<QQuickItem *>(parent))
         itemPrivate = QQuickItemPrivate::get(item);
@@ -1724,7 +1724,7 @@ void QQuickItemPrivate::setLayoutMirror(bool mirror)
 */
 
 QQuickEnterKeyAttached::QQuickEnterKeyAttached(QObject *parent)
-    : QObject(parent), itemPrivate(0), keyType(Qt::EnterKeyDefault)
+    : QObject(parent), itemPrivate(nullptr), keyType(Qt::EnterKeyDefault)
 {
     if (QQuickItem *item = qobject_cast<QQuickItem*>(parent)) {
         itemPrivate = QQuickItemPrivate::get(item);
@@ -1777,7 +1777,7 @@ void QQuickItemPrivate::updateSubFocusItem(QQuickItem *scope, bool focus)
     if (oldSubFocusItem) {
         QQuickItem *sfi = scopePrivate->subFocusItem->parentItem();
         while (sfi && sfi != scope) {
-            QQuickItemPrivate::get(sfi)->subFocusItem = 0;
+            QQuickItemPrivate::get(sfi)->subFocusItem = nullptr;
             sfi = sfi->parentItem();
         }
     }
@@ -1790,7 +1790,7 @@ void QQuickItemPrivate::updateSubFocusItem(QQuickItem *scope, bool focus)
             sfi = sfi->parentItem();
         }
     } else {
-        scopePrivate->subFocusItem = 0;
+        scopePrivate->subFocusItem = nullptr;
     }
 }
 
@@ -2375,13 +2375,13 @@ QQuickItem::~QQuickItem()
     if (d->windowRefCount > 1)
         d->windowRefCount = 1; // Make sure window is set to null in next call to derefWindow().
     if (d->parentItem)
-        setParentItem(0);
+        setParentItem(nullptr);
     else if (d->window)
         d->derefWindow();
 
     // XXX todo - optimize
     while (!d->childItems.isEmpty())
-        d->childItems.constFirst()->setParentItem(0);
+        d->childItems.constFirst()->setParentItem(nullptr);
 
     if (!d->changeListeners.isEmpty()) {
         const auto listeners = d->changeListeners; // NOTE: intentional copy (QTBUG-54732)
@@ -2421,14 +2421,14 @@ QQuickItem::~QQuickItem()
     }
 
     if (d->extra.isAllocated()) {
-        delete d->extra->contents; d->extra->contents = 0;
+        delete d->extra->contents; d->extra->contents = nullptr;
 #if QT_CONFIG(quick_shadereffect)
-        delete d->extra->layer; d->extra->layer = 0;
+        delete d->extra->layer; d->extra->layer = nullptr;
 #endif
     }
 
-    delete d->_anchors; d->_anchors = 0;
-    delete d->_stateGroup; d->_stateGroup = 0;
+    delete d->_anchors; d->_anchors = nullptr;
+    delete d->_stateGroup; d->_stateGroup = nullptr;
 }
 
 /*!
@@ -2543,7 +2543,7 @@ QQuickItem* QQuickItemPrivate::nextPrevItemInTabFocusChain(QQuickItem *item, boo
 
     bool all = QGuiApplication::styleHints()->tabFocusBehavior() == Qt::TabFocusAllControls;
 
-    QQuickItem *from = 0;
+    QQuickItem *from = nullptr;
     bool isTabFence = item->d_func()->isTabFence;
     if (forward) {
         if (!isTabFence)
@@ -2678,7 +2678,7 @@ void QQuickItem::setParentItem(QQuickItem *parentItem)
 
     if (parentItem) {
         QQuickItem *itemAncestor = parentItem;
-        while (itemAncestor != 0) {
+        while (itemAncestor != nullptr) {
             if (Q_UNLIKELY(itemAncestor == this)) {
                 qWarning() << "QQuickItem::setParentItem: Parent" << parentItem << "is already part of the subtree of" << this;
                 return;
@@ -2690,12 +2690,12 @@ void QQuickItem::setParentItem(QQuickItem *parentItem)
     d->removeFromDirtyList();
 
     QQuickItem *oldParentItem = d->parentItem;
-    QQuickItem *scopeFocusedItem = 0;
+    QQuickItem *scopeFocusedItem = nullptr;
 
     if (oldParentItem) {
         QQuickItemPrivate *op = QQuickItemPrivate::get(oldParentItem);
 
-        QQuickItem *scopeItem = 0;
+        QQuickItem *scopeItem = nullptr;
 
         if (hasFocus() || op->subFocusItem == this)
             scopeFocusedItem = this;
@@ -2725,7 +2725,7 @@ void QQuickItem::setParentItem(QQuickItem *parentItem)
         QQuickWindowPrivate::get(d->window)->parentlessItems.remove(this);
     }
 
-    QQuickWindow *parentWindow = parentItem ? QQuickItemPrivate::get(parentItem)->window : 0;
+    QQuickWindow *parentWindow = parentItem ? QQuickItemPrivate::get(parentItem)->window : nullptr;
     if (d->window == parentWindow) {
         // Avoid freeing and reallocating resources if the window stays the same.
         d->parentItem = parentItem;
@@ -2745,7 +2745,7 @@ void QQuickItem::setParentItem(QQuickItem *parentItem)
         QQuickWindowPrivate::get(d->window)->parentlessItems.insert(this);
 
     d->setEffectiveVisibleRecur(d->calcEffectiveVisible());
-    d->setEffectiveEnableRecur(0, d->calcEffectiveEnable());
+    d->setEffectiveEnableRecur(nullptr, d->calcEffectiveEnable());
 
     if (d->parentItem) {
         if (!scopeFocusedItem) {
@@ -2995,7 +2995,7 @@ void QQuickItemPrivate::refWindow(QQuickWindow *c)
     // derefWindow() decrements the reference count.
 
     Q_Q(QQuickItem);
-    Q_ASSERT((window != 0) == (windowRefCount > 0));
+    Q_ASSERT((window != nullptr) == (windowRefCount > 0));
     Q_ASSERT(c);
     if (++windowRefCount > 1) {
         if (c != window)
@@ -3003,7 +3003,7 @@ void QQuickItemPrivate::refWindow(QQuickWindow *c)
         return; // Window already set.
     }
 
-    Q_ASSERT(window == 0);
+    Q_ASSERT(window == nullptr);
     window = c;
 
     if (polishScheduled)
@@ -3027,7 +3027,7 @@ void QQuickItemPrivate::refWindow(QQuickWindow *c)
 void QQuickItemPrivate::derefWindow()
 {
     Q_Q(QQuickItem);
-    Q_ASSERT((window != 0) == (windowRefCount > 0));
+    Q_ASSERT((window != nullptr) == (windowRefCount > 0));
 
     if (!window)
         return; // This can happen when destroying recursive shader effect sources.
@@ -3043,7 +3043,7 @@ void QQuickItemPrivate::derefWindow()
     c->removeGrabber(q);
 #if QT_CONFIG(cursor)
     if (c->cursorItem == q) {
-        c->cursorItem = 0;
+        c->cursorItem = nullptr;
         window->unsetCursor();
     }
 #endif
@@ -3053,17 +3053,17 @@ void QQuickItemPrivate::derefWindow()
     if (!parentItem)
         c->parentlessItems.remove(q);
 
-    window = 0;
+    window = nullptr;
 
-    itemNodeInstance = 0;
+    itemNodeInstance = nullptr;
 
     if (extra.isAllocated()) {
-        extra->opacityNode = 0;
-        extra->clipNode = 0;
-        extra->rootNode = 0;
+        extra->opacityNode = nullptr;
+        extra->clipNode = nullptr;
+        extra->rootNode = nullptr;
     }
 
-    paintNode = 0;
+    paintNode = nullptr;
 
     for (int ii = 0; ii < childItems.count(); ++ii) {
         QQuickItem *child = childItems.at(ii);
@@ -3073,8 +3073,8 @@ void QQuickItemPrivate::derefWindow()
     dirty(Window);
 
     if (extra.isAllocated() && extra->screenAttached)
-        extra->screenAttached->windowChanged(0);
-    itemChange(QQuickItem::ItemSceneChange, (QQuickWindow *)0);
+        extra->screenAttached->windowChanged(nullptr);
+    itemChange(QQuickItem::ItemSceneChange, (QQuickWindow *)nullptr);
 }
 
 
@@ -3160,8 +3160,8 @@ bool QQuickItem::isComponentComplete() const
 }
 
 QQuickItemPrivate::QQuickItemPrivate()
-    : _anchors(0)
-    , _stateGroup(0)
+    : _anchors(nullptr)
+    , _stateGroup(nullptr)
     , flags(0)
     , widthValid(false)
     , heightValid(false)
@@ -3202,13 +3202,13 @@ QQuickItemPrivate::QQuickItemPrivate()
     , touchEnabled(false)
 #endif
     , dirtyAttributes(0)
-    , nextDirtyItem(0)
-    , prevDirtyItem(0)
-    , window(0)
+    , nextDirtyItem(nullptr)
+    , prevDirtyItem(nullptr)
+    , window(nullptr)
     , windowRefCount(0)
-    , parentItem(0)
+    , parentItem(nullptr)
     , sortedChildItems(&childItems)
-    , subFocusItem(0)
+    , subFocusItem(nullptr)
     , x(0)
     , y(0)
     , width(0)
@@ -3216,8 +3216,8 @@ QQuickItemPrivate::QQuickItemPrivate()
     , implicitWidth(0)
     , implicitHeight(0)
     , baselineOffset(0)
-    , itemNodeInstance(0)
-    , paintNode(0)
+    , itemNodeInstance(nullptr)
+    , paintNode(nullptr)
 {
 }
 
@@ -3342,7 +3342,7 @@ QObject *QQuickItemPrivate::data_at(QQmlListProperty<QObject> *property, int i)
     const int j = i - resourcesCount;
     if (j < children_count(&childrenProperty))
         return children_at(&childrenProperty, j);
-    return 0;
+    return nullptr;
 }
 
 void QQuickItemPrivate::data_clear(QQmlListProperty<QObject> *property)
@@ -3396,7 +3396,7 @@ QQuickItem *QQuickItemPrivate::children_at(QQmlListProperty<QQuickItem> *prop, i
 {
     QQuickItemPrivate *p = QQuickItemPrivate::get(static_cast<QQuickItem *>(prop->object));
     if (index >= p->childItems.count() || index < 0)
-        return 0;
+        return nullptr;
     else
         return p->childItems.at(index);
 }
@@ -3408,7 +3408,7 @@ void QQuickItemPrivate::children_append(QQmlListProperty<QQuickItem> *prop, QQui
 
     QQuickItem *that = static_cast<QQuickItem *>(prop->object);
     if (o->parentItem() == that)
-        o->setParentItem(0);
+        o->setParentItem(nullptr);
 
     o->setParentItem(that);
 }
@@ -3424,7 +3424,7 @@ void QQuickItemPrivate::children_clear(QQmlListProperty<QQuickItem> *prop)
     QQuickItem *that = static_cast<QQuickItem *>(prop->object);
     QQuickItemPrivate *p = QQuickItemPrivate::get(that);
     while (!p->childItems.isEmpty())
-        p->childItems.at(0)->setParentItem(0);
+        p->childItems.at(0)->setParentItem(nullptr);
 }
 
 int QQuickItemPrivate::visibleChildren_count(QQmlListProperty<QQuickItem> *prop)
@@ -3444,14 +3444,14 @@ QQuickItem *QQuickItemPrivate::visibleChildren_at(QQmlListProperty<QQuickItem> *
     QQuickItemPrivate *p = QQuickItemPrivate::get(static_cast<QQuickItem *>(prop->object));
     const int childCount = p->childItems.count();
     if (index >= childCount || index < 0)
-        return 0;
+        return nullptr;
 
     int visibleCount = -1;
     for (int i = 0; i < childCount; i++) {
         if (p->childItems.at(i)->isVisible()) visibleCount++;
         if (visibleCount == index) return p->childItems.at(i);
     }
-    return 0;
+    return nullptr;
 }
 
 int QQuickItemPrivate::transform_count(QQmlListProperty<QQuickTransform> *prop)
@@ -3515,7 +3515,7 @@ QQuickTransform *QQuickItemPrivate::transform_at(QQmlListProperty<QQuickTransfor
     QQuickItemPrivate *p = QQuickItemPrivate::get(that);
 
     if (idx < 0 || idx >= p->transforms.count())
-        return 0;
+        return nullptr;
     else
         return p->transforms.at(idx);
 }
@@ -3662,7 +3662,7 @@ void QQuickItemPrivate::siblingOrderChanged()
 
 QQmlListProperty<QObject> QQuickItemPrivate::data()
 {
-    return QQmlListProperty<QObject>(q_func(), 0, QQuickItemPrivate::data_append,
+    return QQmlListProperty<QObject>(q_func(), nullptr, QQuickItemPrivate::data_append,
                                              QQuickItemPrivate::data_count,
                                              QQuickItemPrivate::data_at,
                                              QQuickItemPrivate::data_clear);
@@ -3841,11 +3841,11 @@ QSGNode *QQuickItem::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *upda
 {
     Q_UNUSED(updatePaintNodeData)
     delete oldNode;
-    return 0;
+    return nullptr;
 }
 
 QQuickItem::UpdatePaintNodeData::UpdatePaintNodeData()
-: transformNode(0)
+: transformNode(nullptr)
 {
 }
 
@@ -4410,7 +4410,7 @@ void QQuickItem::mapFromItem(QQmlV4Function *args) const
     QV4::Scope scope(v4);
     QV4::ScopedValue item(scope, (*args)[0]);
 
-    QQuickItem *itemObj = 0;
+    QQuickItem *itemObj = nullptr;
     if (!item->isNull()) {
         QV4::Scoped<QV4::QObjectWrapper> qobjectWrapper(scope, item->as<QV4::QObjectWrapper>());
         if (qobjectWrapper)
@@ -4498,7 +4498,7 @@ void QQuickItem::mapToItem(QQmlV4Function *args) const
     QV4::Scope scope(v4);
     QV4::ScopedValue item(scope, (*args)[0]);
 
-    QQuickItem *itemObj = 0;
+    QQuickItem *itemObj = nullptr;
     if (!item->isNull()) {
         QV4::Scoped<QV4::QObjectWrapper> qobjectWrapper(scope, item->as<QV4::QObjectWrapper>());
         if (qobjectWrapper)
@@ -4731,12 +4731,12 @@ QQuickItem *QQuickItem::childAt(qreal x, qreal y) const
                 && child->height() > point.y())
             return child;
     }
-    return 0;
+    return nullptr;
 }
 
 QQmlListProperty<QObject> QQuickItemPrivate::resources()
 {
-    return QQmlListProperty<QObject>(q_func(), 0, QQuickItemPrivate::resources_append,
+    return QQmlListProperty<QObject>(q_func(), nullptr, QQuickItemPrivate::resources_append,
                                              QQuickItemPrivate::resources_count,
                                              QQuickItemPrivate::resources_at,
                                              QQuickItemPrivate::resources_clear);
@@ -4761,7 +4761,7 @@ QQmlListProperty<QObject> QQuickItemPrivate::resources()
 */
 QQmlListProperty<QQuickItem> QQuickItemPrivate::children()
 {
-    return QQmlListProperty<QQuickItem>(q_func(), 0, QQuickItemPrivate::children_append,
+    return QQmlListProperty<QQuickItem>(q_func(), nullptr, QQuickItemPrivate::children_append,
                                              QQuickItemPrivate::children_count,
                                              QQuickItemPrivate::children_at,
                                              QQuickItemPrivate::children_clear);
@@ -4781,7 +4781,7 @@ QQmlListProperty<QQuickItem> QQuickItemPrivate::children()
 QQmlListProperty<QQuickItem> QQuickItemPrivate::visibleChildren()
 {
     return QQmlListProperty<QQuickItem>(q_func(),
-                                        0,
+                                        nullptr,
                                         QQuickItemPrivate::visibleChildren_count,
                                         QQuickItemPrivate::visibleChildren_at);
 
@@ -4931,7 +4931,7 @@ void QQuickItem::setState(const QString &state)
   */
 QQmlListProperty<QQuickTransform> QQuickItem::transform()
 {
-    return QQmlListProperty<QQuickTransform>(this, 0, QQuickItemPrivate::transform_append,
+    return QQmlListProperty<QQuickTransform>(this, nullptr, QQuickItemPrivate::transform_append,
                                                      QQuickItemPrivate::transform_count,
                                                      QQuickItemPrivate::transform_at,
                                                      QQuickItemPrivate::transform_clear);
@@ -6065,8 +6065,8 @@ void QQuickItemPrivate::removeFromDirtyList()
     if (prevDirtyItem) {
         if (nextDirtyItem) QQuickItemPrivate::get(nextDirtyItem)->prevDirtyItem = prevDirtyItem;
         *prevDirtyItem = nextDirtyItem;
-        prevDirtyItem = 0;
-        nextDirtyItem = 0;
+        prevDirtyItem = nullptr;
+        nextDirtyItem = nullptr;
     }
     Q_ASSERT(!prevDirtyItem);
     Q_ASSERT(!nextDirtyItem);
@@ -7135,7 +7135,7 @@ QQuickItem *QQuickItem::scopedFocusItem() const
 {
     Q_D(const QQuickItem);
     if (!isFocusScope())
-        return 0;
+        return nullptr;
     else
         return d->subFocusItem;
 }
@@ -8056,7 +8056,7 @@ QSGTextureProvider *QQuickItem::textureProvider() const
 #if QT_CONFIG(quick_shadereffect)
     Q_D(const QQuickItem);
     return d->extra.isAllocated() && d->extra->layer && d->extra->layer->effectSource() ?
-           d->extra->layer->effectSource()->textureProvider() : 0;
+           d->extra->layer->effectSource()->textureProvider() : nullptr;
 #else
     return 0;
 #endif
@@ -8095,9 +8095,9 @@ QQuickItemLayer::QQuickItemLayer(QQuickItem *item)
     , m_wrapMode(QQuickShaderEffectSource::ClampToEdge)
     , m_format(QQuickShaderEffectSource::RGBA)
     , m_name("source")
-    , m_effectComponent(0)
-    , m_effect(0)
-    , m_effectSource(0)
+    , m_effectComponent(nullptr)
+    , m_effect(nullptr)
+    , m_effectSource(nullptr)
     , m_textureMirroring(QQuickShaderEffectSource::MirrorVertically)
     , m_samples(0)
 {
@@ -8198,7 +8198,7 @@ void QQuickItemLayer::deactivate()
         deactivateEffect();
 
     delete m_effectSource;
-    m_effectSource = 0;
+    m_effectSource = nullptr;
 
     QQuickItemPrivate *id = QQuickItemPrivate::get(m_item);
     id->removeItemChangeListener(this,  QQuickItemPrivate::Geometry | QQuickItemPrivate::Opacity | QQuickItemPrivate::Parent | QQuickItemPrivate::Visibility | QQuickItemPrivate::SiblingOrder);
@@ -8235,7 +8235,7 @@ void QQuickItemLayer::deactivateEffect()
     Q_ASSERT(m_effectComponent);
 
     delete m_effect;
-    m_effect = 0;
+    m_effect = nullptr;
 }
 
 
@@ -8543,7 +8543,7 @@ void QQuickItemLayer::itemParentChanged(QQuickItem *item, QQuickItem *parent)
     Q_UNUSED(item)
     Q_ASSERT(item == m_item);
     Q_ASSERT(parent != m_effectSource);
-    Q_ASSERT(parent == 0 || parent != m_effect);
+    Q_ASSERT(parent == nullptr || parent != m_effect);
 
     m_effectSource->setParentItem(parent);
     if (parent)
@@ -8615,16 +8615,16 @@ void QQuickItemLayer::updateMatrix()
 
 QQuickItemPrivate::ExtraData::ExtraData()
 : z(0), scale(1), rotation(0), opacity(1),
-  contents(0), screenAttached(0), layoutDirectionAttached(0),
-  enterKeyAttached(0),
-  keyHandler(0),
+  contents(nullptr), screenAttached(nullptr), layoutDirectionAttached(nullptr),
+  enterKeyAttached(nullptr),
+  keyHandler(nullptr),
 #if QT_CONFIG(quick_shadereffect)
-  layer(0),
+  layer(nullptr),
 #endif
   effectRefCount(0), hideRefCount(0),
   recursiveEffectRefCount(0),
-  opacityNode(0), clipNode(0), rootNode(0),
-  acceptedMouseButtons(0), origin(QQuickItem::Center),
+  opacityNode(nullptr), clipNode(nullptr), rootNode(nullptr),
+  acceptedMouseButtons(nullptr), origin(QQuickItem::Center),
   transparentForPositioner(false)
 {
 }
diff --git a/src/quick/items/qquickitem_p.h b/src/quick/items/qquickitem_p.h
index ee854bb2ac..2e91e2111c 100644
--- a/src/quick/items/qquickitem_p.h
+++ b/src/quick/items/qquickitem_p.h
@@ -97,7 +97,7 @@ public:
 
     QRectF rectF() const { return m_contents; }
 
-    inline void calcGeometry(QQuickItem *changed = 0);
+    inline void calcGeometry(QQuickItem *changed = nullptr);
     void complete();
 
 protected:
@@ -108,8 +108,8 @@ protected:
     //void itemVisibilityChanged(QQuickItem *item)
 
 private:
-    bool calcHeight(QQuickItem *changed = 0);
-    bool calcWidth(QQuickItem *changed = 0);
+    bool calcHeight(QQuickItem *changed = nullptr);
+    bool calcWidth(QQuickItem *changed = nullptr);
     void updateRect();
 
     QQuickItem *m_item;
@@ -330,7 +330,7 @@ public:
     Q_DECLARE_FLAGS(ChangeTypes, ChangeType)
 
     struct ChangeListener {
-        ChangeListener(QQuickItemChangeListener *l = nullptr, QQuickItemPrivate::ChangeTypes t = 0) : listener(l), types(t), gTypes(QQuickGeometryChange::All) {}
+        ChangeListener(QQuickItemChangeListener *l = nullptr, QQuickItemPrivate::ChangeTypes t = nullptr) : listener(l), types(t), gTypes(QQuickGeometryChange::All) {}
         ChangeListener(QQuickItemChangeListener *l, QQuickGeometryChange gt) : listener(l), types(Geometry), gTypes(gt) {}
         QQuickItemChangeListener *listener;
         QQuickItemPrivate::ChangeTypes types;
@@ -605,9 +605,9 @@ public:
          - (rootNode) (shader effect source's root node)
      */
 
-    QSGOpacityNode *opacityNode() const { return extra.isAllocated()?extra->opacityNode:0; }
-    QQuickDefaultClipNode *clipNode() const { return extra.isAllocated()?extra->clipNode:0; }
-    QSGRootNode *rootNode() const { return extra.isAllocated()?extra->rootNode:0; }
+    QSGOpacityNode *opacityNode() const { return extra.isAllocated()?extra->opacityNode:nullptr; }
+    QQuickDefaultClipNode *clipNode() const { return extra.isAllocated()?extra->clipNode:nullptr; }
+    QSGRootNode *rootNode() const { return extra.isAllocated()?extra->rootNode:nullptr; }
 
     QSGTransformNode *itemNodeInstance;
     QSGNode *paintNode;
@@ -639,7 +639,7 @@ public:
 class QQuickItemKeyFilter
 {
 public:
-    QQuickItemKeyFilter(QQuickItem * = 0);
+    QQuickItemKeyFilter(QQuickItem * = nullptr);
     virtual ~QQuickItemKeyFilter();
 
     virtual void keyPressed(QKeyEvent *event, bool post);
@@ -662,7 +662,7 @@ class QQuickKeyNavigationAttachedPrivate : public QObjectPrivate
 public:
     QQuickKeyNavigationAttachedPrivate()
         : QObjectPrivate(),
-          left(0), right(0), up(0), down(0), tab(0), backtab(0),
+          left(nullptr), right(nullptr), up(nullptr), down(nullptr), tab(nullptr), backtab(nullptr),
           leftSet(false), rightSet(false), upSet(false), downSet(false),
           tabSet(false), backtabSet(false) {}
 
@@ -694,7 +694,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickKeyNavigationAttached : public QObject, publi
     Q_PROPERTY(Priority priority READ priority WRITE setPriority NOTIFY priorityChanged)
 
 public:
-    QQuickKeyNavigationAttached(QObject * = 0);
+    QQuickKeyNavigationAttached(QObject * = nullptr);
 
     QQuickItem *left() const;
     void setLeft(QQuickItem *);
@@ -739,7 +739,7 @@ class QQuickLayoutMirroringAttached : public QObject
     Q_PROPERTY(bool childrenInherit READ childrenInherit WRITE setChildrenInherit NOTIFY childrenInheritChanged)
 
 public:
-    explicit QQuickLayoutMirroringAttached(QObject *parent = 0);
+    explicit QQuickLayoutMirroringAttached(QObject *parent = nullptr);
 
     bool enabled() const;
     void setEnabled(bool);
@@ -783,7 +783,7 @@ class QQuickKeysAttachedPrivate : public QObjectPrivate
 public:
     QQuickKeysAttachedPrivate()
         : QObjectPrivate(), inPress(false), inRelease(false)
-        , inIM(false), enabled(true), imeItem(0), item(0)
+        , inIM(false), enabled(true), imeItem(nullptr), item(nullptr)
     {}
 
     //loop detection
@@ -809,7 +809,7 @@ class QQuickKeysAttached : public QObject, public QQuickItemKeyFilter
     Q_PROPERTY(Priority priority READ priority WRITE setPriority NOTIFY priorityChanged)
 
 public:
-    QQuickKeysAttached(QObject *parent=0);
+    QQuickKeysAttached(QObject *parent=nullptr);
     ~QQuickKeysAttached();
 
     bool enabled() const { Q_D(const QQuickKeysAttached); return d->enabled; }
@@ -898,7 +898,7 @@ private:
 Qt::MouseButtons QQuickItemPrivate::acceptedMouseButtons() const
 {
     return ((extra.flag() ? Qt::LeftButton : Qt::MouseButton(0)) |
-            (extra.isAllocated() ? extra->acceptedMouseButtons : Qt::MouseButtons(0)));
+            (extra.isAllocated() ? extra->acceptedMouseButtons : Qt::MouseButtons(nullptr)));
 }
 
 QSGContext *QQuickItemPrivate::sceneGraphContext() const
@@ -920,7 +920,7 @@ void QQuickItemPrivate::markSortedChildrenDirty(QQuickItem *child)
     if (child->z() != 0. || sortedChildItems != &childItems) {
         if (sortedChildItems != &childItems)
             delete sortedChildItems;
-        sortedChildItems = 0;
+        sortedChildItems = nullptr;
     }
 }
 
diff --git a/src/quick/items/qquickitemanimation.cpp b/src/quick/items/qquickitemanimation.cpp
index 4b5c81b4d4..e913e5ba05 100644
--- a/src/quick/items/qquickitemanimation.cpp
+++ b/src/quick/items/qquickitemanimation.cpp
@@ -371,7 +371,7 @@ QAbstractAnimationJob* QQuickParentAnimation::transition(QQuickStateActions &act
 
     if (data->actions.count()) {
         QSequentialAnimationGroupJob *topLevelGroup = new QSequentialAnimationGroupJob;
-        QActionAnimation *viaAction = d->via ? new QActionAnimation : 0;
+        QActionAnimation *viaAction = d->via ? new QActionAnimation : nullptr;
         QActionAnimation *targetAction = new QActionAnimation;
         //we'll assume the common case by far is to have children, and always create ag
         QParallelAnimationGroupJob *ag = new QParallelAnimationGroupJob;
@@ -409,7 +409,7 @@ QAbstractAnimationJob* QQuickParentAnimation::transition(QQuickStateActions &act
         delete data;
         delete viaData;
     }
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -922,12 +922,12 @@ QAbstractAnimationJob* QQuickPathAnimation::transition(QQuickStateActions &actio
         pa->setEasingCurve(d->easingCurve);
         return initInstance(pa);
     } else {
-        pa->setFromSourcedValue(0);
-        pa->setAnimValue(0);
+        pa->setFromSourcedValue(nullptr);
+        pa->setAnimValue(nullptr);
         delete pa;
         delete data;
     }
-    return 0;
+    return nullptr;
 }
 
 void QQuickPathAnimationUpdater::setValue(qreal v)
@@ -955,7 +955,7 @@ void QQuickPathAnimationUpdater::setValue(qreal v)
 
     qreal angle;
     bool fixed = orientation == QQuickPathAnimation::Fixed;
-    QPointF currentPos = !painterPath.isEmpty() ? path->sequentialPointAt(painterPath, pathLength, attributePoints, prevBez, v, fixed ? 0 : &angle) : path->sequentialPointAt(v, fixed ? 0 : &angle);
+    QPointF currentPos = !painterPath.isEmpty() ? path->sequentialPointAt(painterPath, pathLength, attributePoints, prevBez, v, fixed ? nullptr : &angle) : path->sequentialPointAt(v, fixed ? nullptr : &angle);
 
     //adjust position according to anchor point
     if (!anchorPoint.isNull()) {
diff --git a/src/quick/items/qquickitemanimation_p.h b/src/quick/items/qquickitemanimation_p.h
index 3b3fad9cc4..b803455f12 100644
--- a/src/quick/items/qquickitemanimation_p.h
+++ b/src/quick/items/qquickitemanimation_p.h
@@ -68,7 +68,7 @@ class Q_AUTOTEST_EXPORT QQuickParentAnimation : public QQuickAnimationGroup
     Q_PROPERTY(QQuickItem *via READ via WRITE setVia NOTIFY viaChanged)
 
 public:
-    QQuickParentAnimation(QObject *parent=0);
+    QQuickParentAnimation(QObject *parent=nullptr);
     virtual ~QQuickParentAnimation();
 
     QQuickItem *target() const;
@@ -89,7 +89,7 @@ protected:
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0) override;
+                            QObject *defaultTarget = nullptr) override;
 };
 
 class QQuickAnchorAnimationPrivate;
@@ -102,7 +102,7 @@ class Q_AUTOTEST_EXPORT QQuickAnchorAnimation : public QQuickAbstractAnimation
     Q_PROPERTY(QEasingCurve easing READ easing WRITE setEasing NOTIFY easingChanged)
 
 public:
-    QQuickAnchorAnimation(QObject *parent=0);
+    QQuickAnchorAnimation(QObject *parent=nullptr);
     virtual ~QQuickAnchorAnimation();
 
     QQmlListProperty<QQuickItem> targets();
@@ -121,7 +121,7 @@ protected:
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0) override;
+                            QObject *defaultTarget = nullptr) override;
 };
 
 #if QT_CONFIG(quick_path)
@@ -145,7 +145,7 @@ class Q_AUTOTEST_EXPORT QQuickPathAnimation : public QQuickAbstractAnimation
     Q_PROPERTY(qreal endRotation READ endRotation WRITE setEndRotation NOTIFY endRotationChanged)
 
 public:
-    QQuickPathAnimation(QObject *parent=0);
+    QQuickPathAnimation(QObject *parent=nullptr);
     virtual ~QQuickPathAnimation();
 
     enum Orientation {
@@ -188,7 +188,7 @@ protected:
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0) override;
+                            QObject *defaultTarget = nullptr) override;
 Q_SIGNALS:
     void durationChanged(int);
     void easingChanged(const QEasingCurve &);
diff --git a/src/quick/items/qquickitemanimation_p_p.h b/src/quick/items/qquickitemanimation_p_p.h
index 2d075dfab3..83b9899197 100644
--- a/src/quick/items/qquickitemanimation_p_p.h
+++ b/src/quick/items/qquickitemanimation_p_p.h
@@ -65,7 +65,7 @@ class QQuickParentAnimationPrivate : public QQuickAnimationGroupPrivate
     Q_DECLARE_PUBLIC(QQuickParentAnimation)
 public:
  QQuickParentAnimationPrivate()
-    : QQuickAnimationGroupPrivate(), target(0), newParent(0), via(0) {}
+    : QQuickAnimationGroupPrivate(), target(nullptr), newParent(nullptr), via(nullptr) {}
 
     QQuickItem *target;
     QQuickItem *newParent;
@@ -91,7 +91,7 @@ public:
 class QQuickPathAnimationUpdater : public QQuickBulkValueUpdater
 {
 public:
-    QQuickPathAnimationUpdater() : path(0), pathLength(0), target(0), reverse(false),
+    QQuickPathAnimationUpdater() : path(nullptr), pathLength(0), target(nullptr), reverse(false),
         fromSourced(false), fromDefined(false), toDefined(false),
         toX(0), toY(0), currentV(0), orientation(QQuickPathAnimation::Fixed),
         entryInterval(0), exitInterval(0) {}
@@ -128,10 +128,10 @@ class QQuickPathAnimationPrivate;
 class QQuickPathAnimationAnimator : public QQuickBulkValueAnimator
 {
 public:
-    QQuickPathAnimationAnimator(QQuickPathAnimationPrivate * = 0);
+    QQuickPathAnimationAnimator(QQuickPathAnimationPrivate * = nullptr);
     ~QQuickPathAnimationAnimator();
 
-    void clearTemplate() { animationTemplate = 0; }
+    void clearTemplate() { animationTemplate = nullptr; }
 
     QQuickPathAnimationUpdater *pathUpdater() const { return static_cast<QQuickPathAnimationUpdater*>(getAnimValue()); }
 private:
@@ -142,7 +142,7 @@ class QQuickPathAnimationPrivate : public QQuickAbstractAnimationPrivate
 {
     Q_DECLARE_PUBLIC(QQuickPathAnimation)
 public:
-    QQuickPathAnimationPrivate() : path(0), target(0),
+    QQuickPathAnimationPrivate() : path(nullptr), target(nullptr),
         orientation(QQuickPathAnimation::Fixed), entryDuration(0), exitDuration(0), duration(250) {}
 
     QQuickPath *path;
diff --git a/src/quick/items/qquickitemchangelistener_p.h b/src/quick/items/qquickitemchangelistener_p.h
index cb0af75c4c..31d06c9983 100644
--- a/src/quick/items/qquickitemchangelistener_p.h
+++ b/src/quick/items/qquickitemchangelistener_p.h
@@ -135,7 +135,7 @@ public:
     virtual void itemImplicitWidthChanged(QQuickItem *) {}
     virtual void itemImplicitHeightChanged(QQuickItem *) {}
 
-    virtual QQuickAnchorsPrivate *anchorPrivate() { return 0; }
+    virtual QQuickAnchorsPrivate *anchorPrivate() { return nullptr; }
 };
 
 QT_END_NAMESPACE
diff --git a/src/quick/items/qquickitemgrabresult.cpp b/src/quick/items/qquickitemgrabresult.cpp
index c3f8d4f024..003fde8c9e 100644
--- a/src/quick/items/qquickitemgrabresult.cpp
+++ b/src/quick/items/qquickitemgrabresult.cpp
@@ -62,9 +62,9 @@ class QQuickItemGrabResultPrivate : public QObjectPrivate
 {
 public:
     QQuickItemGrabResultPrivate()
-        : cacheEntry(0)
-        , qmlEngine(0)
-        , texture(0)
+        : cacheEntry(nullptr)
+        , qmlEngine(nullptr)
+        , texture(nullptr)
     {
     }
 
@@ -266,7 +266,7 @@ void QQuickItemGrabResult::render()
     d->image =  d->texture->toImage();
 
     delete d->texture;
-    d->texture = 0;
+    d->texture = nullptr;
 
     disconnect(d->window.data(), &QQuickWindow::beforeSynchronizing, this, &QQuickItemGrabResult::setup);
     disconnect(d->window.data(), &QQuickWindow::afterRendering, this, &QQuickItemGrabResult::render);
@@ -281,17 +281,17 @@ QQuickItemGrabResult *QQuickItemGrabResultPrivate::create(QQuickItem *item, cons
 
     if (size.width() < 1 || size.height() < 1) {
         qmlWarning(item) << "grabToImage: item has invalid dimensions";
-        return 0;
+        return nullptr;
     }
 
     if (!item->window()) {
         qmlWarning(item) << "grabToImage: item is not attached to a window";
-        return 0;
+        return nullptr;
     }
 
     if (!item->window()->isVisible()) {
         qmlWarning(item) << "grabToImage: item's window is not visible";
-        return 0;
+        return nullptr;
     }
 
     QQuickItemGrabResult *result = new QQuickItemGrabResult();
diff --git a/src/quick/items/qquickitemview.cpp b/src/quick/items/qquickitemview.cpp
index 21aca04fdc..f2e055e874 100644
--- a/src/quick/items/qquickitemview.cpp
+++ b/src/quick/items/qquickitemview.cpp
@@ -54,7 +54,7 @@ Q_LOGGING_CATEGORY(lcItemViewDelegateLifecycle, "qt.quick.itemview.lifecycle")
 FxViewItem::FxViewItem(QQuickItem *i, QQuickItemView *v, bool own, QQuickItemViewAttached *attached)
     : item(i)
     , view(v)
-    , transitionableItem(0)
+    , transitionableItem(nullptr)
     , attached(attached)
     , ownItem(own)
     , releaseAfterTransition(false)
@@ -69,9 +69,9 @@ FxViewItem::~FxViewItem()
     delete transitionableItem;
     if (ownItem && item) {
         trackGeometry(false);
-        item->setParentItem(0);
+        item->setParentItem(nullptr);
         item->deleteLater();
-        item = 0;
+        item = nullptr;
     }
 }
 
@@ -275,7 +275,7 @@ QQuickItemView::~QQuickItemView()
 QQuickItem *QQuickItemView::currentItem() const
 {
     Q_D(const QQuickItemView);
-    return d->currentItem ? d->currentItem->item : 0;
+    return d->currentItem ? d->currentItem->item : nullptr;
 }
 
 QVariant QQuickItemView::model() const
@@ -304,12 +304,12 @@ void QQuickItemView::setModel(const QVariant &m)
     QQmlInstanceModel *oldModel = d->model;
 
     d->clear();
-    d->model = 0;
+    d->model = nullptr;
     d->setPosition(d->contentStartOffset());
     d->modelVariant = model;
 
     QObject *object = qvariant_cast<QObject*>(model);
-    QQmlInstanceModel *vim = 0;
+    QQmlInstanceModel *vim = nullptr;
     if (object && (vim = qobject_cast<QQmlInstanceModel *>(object))) {
         if (d->ownModel) {
             delete oldModel;
@@ -362,7 +362,7 @@ QQmlComponent *QQuickItemView::delegate() const
             return dataModel->delegate();
     }
 
-    return 0;
+    return nullptr;
 }
 
 void QQuickItemView::setDelegate(QQmlComponent *delegate)
@@ -382,7 +382,7 @@ void QQuickItemView::setDelegate(QQmlComponent *delegate)
         if (isComponentComplete()) {
             d->releaseVisibleItems();
             d->releaseItem(d->currentItem);
-            d->currentItem = 0;
+            d->currentItem = nullptr;
             d->updateSectionCriteria();
             d->refill();
             d->moveReason = QQuickItemViewPrivate::SetIndex;
@@ -586,7 +586,7 @@ QQmlComponent *QQuickItemView::header() const
 QQuickItem *QQuickItemView::headerItem() const
 {
     Q_D(const QQuickItemView);
-    return d->header ? d->header->item : 0;
+    return d->header ? d->header->item : nullptr;
 }
 
 void QQuickItemView::setHeader(QQmlComponent *headerComponent)
@@ -595,7 +595,7 @@ void QQuickItemView::setHeader(QQmlComponent *headerComponent)
     if (d->headerComponent != headerComponent) {
         d->applyPendingChanges();
         delete d->header;
-        d->header = 0;
+        d->header = nullptr;
         d->headerComponent = headerComponent;
 
         d->markExtentsDirty();
@@ -621,7 +621,7 @@ QQmlComponent *QQuickItemView::footer() const
 QQuickItem *QQuickItemView::footerItem() const
 {
     Q_D(const QQuickItemView);
-    return d->footer ? d->footer->item : 0;
+    return d->footer ? d->footer->item : nullptr;
 }
 
 void QQuickItemView::setFooter(QQmlComponent *footerComponent)
@@ -630,7 +630,7 @@ void QQuickItemView::setFooter(QQmlComponent *footerComponent)
     if (d->footerComponent != footerComponent) {
         d->applyPendingChanges();
         delete d->footer;
-        d->footer = 0;
+        d->footer = nullptr;
         d->footerComponent = footerComponent;
 
         if (isComponentComplete()) {
@@ -666,7 +666,7 @@ void QQuickItemView::setHighlight(QQmlComponent *highlightComponent)
 QQuickItem *QQuickItemView::highlightItem() const
 {
     Q_D(const QQuickItemView);
-    return d->highlight ? d->highlight->item : 0;
+    return d->highlight ? d->highlight->item : nullptr;
 }
 
 bool QQuickItemView::highlightFollowsCurrentItem() const
@@ -799,7 +799,7 @@ void QQuickItemView::setHighlightMoveDuration(int duration)
 QQuickTransition *QQuickItemView::populateTransition() const
 {
     Q_D(const QQuickItemView);
-    return d->transitioner ? d->transitioner->populateTransition : 0;
+    return d->transitioner ? d->transitioner->populateTransition : nullptr;
 }
 
 void QQuickItemView::setPopulateTransition(QQuickTransition *transition)
@@ -815,7 +815,7 @@ void QQuickItemView::setPopulateTransition(QQuickTransition *transition)
 QQuickTransition *QQuickItemView::addTransition() const
 {
     Q_D(const QQuickItemView);
-    return d->transitioner ? d->transitioner->addTransition : 0;
+    return d->transitioner ? d->transitioner->addTransition : nullptr;
 }
 
 void QQuickItemView::setAddTransition(QQuickTransition *transition)
@@ -831,7 +831,7 @@ void QQuickItemView::setAddTransition(QQuickTransition *transition)
 QQuickTransition *QQuickItemView::addDisplacedTransition() const
 {
     Q_D(const QQuickItemView);
-    return d->transitioner ? d->transitioner->addDisplacedTransition : 0;
+    return d->transitioner ? d->transitioner->addDisplacedTransition : nullptr;
 }
 
 void QQuickItemView::setAddDisplacedTransition(QQuickTransition *transition)
@@ -847,7 +847,7 @@ void QQuickItemView::setAddDisplacedTransition(QQuickTransition *transition)
 QQuickTransition *QQuickItemView::moveTransition() const
 {
     Q_D(const QQuickItemView);
-    return d->transitioner ? d->transitioner->moveTransition : 0;
+    return d->transitioner ? d->transitioner->moveTransition : nullptr;
 }
 
 void QQuickItemView::setMoveTransition(QQuickTransition *transition)
@@ -863,7 +863,7 @@ void QQuickItemView::setMoveTransition(QQuickTransition *transition)
 QQuickTransition *QQuickItemView::moveDisplacedTransition() const
 {
     Q_D(const QQuickItemView);
-    return d->transitioner ? d->transitioner->moveDisplacedTransition : 0;
+    return d->transitioner ? d->transitioner->moveDisplacedTransition : nullptr;
 }
 
 void QQuickItemView::setMoveDisplacedTransition(QQuickTransition *transition)
@@ -879,7 +879,7 @@ void QQuickItemView::setMoveDisplacedTransition(QQuickTransition *transition)
 QQuickTransition *QQuickItemView::removeTransition() const
 {
     Q_D(const QQuickItemView);
-    return d->transitioner ? d->transitioner->removeTransition : 0;
+    return d->transitioner ? d->transitioner->removeTransition : nullptr;
 }
 
 void QQuickItemView::setRemoveTransition(QQuickTransition *transition)
@@ -895,7 +895,7 @@ void QQuickItemView::setRemoveTransition(QQuickTransition *transition)
 QQuickTransition *QQuickItemView::removeDisplacedTransition() const
 {
     Q_D(const QQuickItemView);
-    return d->transitioner ? d->transitioner->removeDisplacedTransition : 0;
+    return d->transitioner ? d->transitioner->removeDisplacedTransition : nullptr;
 }
 
 void QQuickItemView::setRemoveDisplacedTransition(QQuickTransition *transition)
@@ -911,7 +911,7 @@ void QQuickItemView::setRemoveDisplacedTransition(QQuickTransition *transition)
 QQuickTransition *QQuickItemView::displacedTransition() const
 {
     Q_D(const QQuickItemView);
-    return d->transitioner ? d->transitioner->displacedTransition : 0;
+    return d->transitioner ? d->transitioner->displacedTransition : nullptr;
 }
 
 void QQuickItemView::setDisplacedTransition(QQuickTransition *transition)
@@ -1234,7 +1234,7 @@ void QQuickItemViewPrivate::itemGeometryChanged(QQuickItem *item, QQuickGeometry
         // start new transitions
         bool prevInLayout = inLayout;
         if (!inLayout) {
-            FxViewItem *actualItem = transitioner ? visibleItem(currentIndex) : 0;
+            FxViewItem *actualItem = transitioner ? visibleItem(currentIndex) : nullptr;
             if (actualItem && actualItem->transitionRunning())
                 inLayout = true;
         }
@@ -1558,14 +1558,14 @@ QQuickItemViewPrivate::QQuickItemViewPrivate()
     , layoutDirection(Qt::LeftToRight), verticalLayoutDirection(QQuickItemView::TopToBottom)
     , moveReason(Other)
     , visibleIndex(0)
-    , currentIndex(-1), currentItem(0)
-    , trackedItem(0), requestedIndex(-1)
-    , highlightComponent(0), highlight(0)
+    , currentIndex(-1), currentItem(nullptr)
+    , trackedItem(nullptr), requestedIndex(-1)
+    , highlightComponent(nullptr), highlight(nullptr)
     , highlightRange(QQuickItemView::NoHighlightRange)
     , highlightRangeStart(0), highlightRangeEnd(0)
     , highlightMoveDuration(150)
-    , headerComponent(0), header(0), footerComponent(0), footer(0)
-    , transitioner(0)
+    , headerComponent(nullptr), header(nullptr), footerComponent(nullptr), footer(nullptr)
+    , transitioner(nullptr)
     , minExtent(0), maxExtent(0)
     , ownModel(false), wrap(false)
     , keyNavigationEnabled(true)
@@ -1583,7 +1583,7 @@ QQuickItemViewPrivate::QQuickItemViewPrivate()
 QQuickItemViewPrivate::~QQuickItemViewPrivate()
 {
     if (transitioner)
-        transitioner->setChangeListener(0);
+        transitioner->setChangeListener(nullptr);
     delete transitioner;
 }
 
@@ -1649,7 +1649,7 @@ FxViewItem *QQuickItemViewPrivate::visibleItem(int modelIndex) const {
                 return item;
         }
     }
-    return 0;
+    return nullptr;
 }
 
 // should rename to firstItemInView() to avoid confusion with other "*visible*" methods
@@ -1709,7 +1709,7 @@ void QQuickItemViewPrivate::updateCurrent(int modelIndex)
             if (currentItem->attached)
                 currentItem->attached->setIsCurrentItem(false);
             releaseItem(currentItem);
-            currentItem = 0;
+            currentItem = nullptr;
             currentIndex = modelIndex;
             emit q->currentIndexChanged();
             emit q->currentItemChanged();
@@ -1766,11 +1766,11 @@ void QQuickItemViewPrivate::clear()
 
     auto oldCurrentItem = currentItem;
     releaseItem(currentItem);
-    currentItem = 0;
+    currentItem = nullptr;
     if (oldCurrentItem)
         emit q->currentItemChanged();
     createHighlight();
-    trackedItem = 0;
+    trackedItem = nullptr;
 
     if (requestedIndex >= 0) {
         if (model)
@@ -1865,9 +1865,9 @@ void QQuickItemViewPrivate::regenerate(bool orientationChanged)
     if (q->isComponentComplete()) {
         if (orientationChanged) {
             delete header;
-            header = 0;
+            header = nullptr;
             delete footer;
-            footer = 0;
+            footer = nullptr;
         }
         clear();
         updateHeader();
@@ -2126,7 +2126,7 @@ bool QQuickItemViewPrivate::applyModelChanges(ChangeResult *totalInsertionResult
                 currentItem->attached->setIsCurrentItem(false);
             auto oldCurrentItem = currentItem;
             releaseItem(currentItem);
-            currentItem = 0;
+            currentItem = nullptr;
             if (oldCurrentItem)
                 emit q->currentItemChanged();
         }
@@ -2345,7 +2345,7 @@ FxViewItem *QQuickItemViewPrivate::createItem(int modelIndex, QQmlIncubator::Inc
     Q_Q(QQuickItemView);
 
     if (requestedIndex == modelIndex && incubationMode == QQmlIncubator::Asynchronous)
-        return 0;
+        return nullptr;
 
     for (int i=0; i<releasePendingTransition.count(); i++) {
         if (releasePendingTransition.at(i)->index == modelIndex
@@ -2377,7 +2377,7 @@ FxViewItem *QQuickItemViewPrivate::createItem(int modelIndex, QQmlIncubator::Inc
             }
         }
         inRequest = false;
-        return 0;
+        return nullptr;
     } else {
         item->setParentItem(q->contentItem());
         if (requestedIndex == modelIndex)
@@ -2430,7 +2430,7 @@ void QQuickItemView::destroyingItem(QObject *object)
     Q_D(QQuickItemView);
     QQuickItem* item = qmlobject_cast<QQuickItem*>(object);
     if (item) {
-        item->setParentItem(0);
+        item->setParentItem(nullptr);
         d->unrequestedItems.remove(item);
     }
 }
@@ -2441,7 +2441,7 @@ bool QQuickItemViewPrivate::releaseItem(FxViewItem *item)
     if (!item || !model)
         return true;
     if (trackedItem == item)
-        trackedItem = 0;
+        trackedItem = nullptr;
     item->trackGeometry(false);
 
     QQmlInstanceModel::ReleaseFlags flags = model->release(item->item);
@@ -2451,7 +2451,7 @@ bool QQuickItemViewPrivate::releaseItem(FxViewItem *item)
             QQuickItemPrivate::get(item->item)->setCulled(true);
             unrequestedItems.insert(item->item, model->indexOf(item->item, q));
         } else if (flags & QQmlInstanceModel::Destroyed) {
-            item->item->setParentItem(0);
+            item->item->setParentItem(nullptr);
         }
     }
     delete item;
@@ -2467,7 +2467,7 @@ QQuickItem *QQuickItemViewPrivate::createComponentItem(QQmlComponent *component,
 {
     Q_Q(const QQuickItemView);
 
-    QQuickItem *item = 0;
+    QQuickItem *item = nullptr;
     if (component) {
         QQmlContext *creationContext = component->creationContext();
         QQmlContext *context = new QQmlContext(
diff --git a/src/quick/items/qquickitemview_p.h b/src/quick/items/qquickitemview_p.h
index b38bc6174f..483fc1a09f 100644
--- a/src/quick/items/qquickitemview_p.h
+++ b/src/quick/items/qquickitemview_p.h
@@ -128,7 +128,7 @@ public:
     };
     Q_ENUM(VerticalLayoutDirection)
 
-    QQuickItemView(QQuickFlickablePrivate &dd, QQuickItem *parent = 0);
+    QQuickItemView(QQuickFlickablePrivate &dd, QQuickItem *parent = nullptr);
     ~QQuickItemView();
 
     QVariant model() const;
diff --git a/src/quick/items/qquickitemviewtransition.cpp b/src/quick/items/qquickitemviewtransition.cpp
index 745e5b275f..5cd28d0acb 100644
--- a/src/quick/items/qquickitemviewtransition.cpp
+++ b/src/quick/items/qquickitemviewtransition.cpp
@@ -69,11 +69,11 @@ protected:
 
 
 QQuickItemViewTransitionJob::QQuickItemViewTransitionJob()
-    : m_transitioner(0)
-    , m_item(0)
+    : m_transitioner(nullptr)
+    , m_item(nullptr)
     , m_type(QQuickItemViewTransitioner::NoTransition)
     , m_isTarget(false)
-    , m_wasDeleted(0)
+    , m_wasDeleted(nullptr)
 {
 }
 
@@ -143,12 +143,12 @@ void QQuickItemViewTransitionJob::finished()
         m_transitioner->finishedTransition(this, m_item);
         if (deleted)
             return;
-        m_wasDeleted = 0;
+        m_wasDeleted = nullptr;
 
-        m_transitioner = 0;
+        m_transitioner = nullptr;
     }
 
-    m_item = 0;
+    m_item = nullptr;
     m_toPos.setX(0);
     m_toPos.setY(0);
     m_type = QQuickItemViewTransitioner::NoTransition;
@@ -157,12 +157,12 @@ void QQuickItemViewTransitionJob::finished()
 
 
 QQuickItemViewTransitioner::QQuickItemViewTransitioner()
-    : populateTransition(0)
-    , addTransition(0), addDisplacedTransition(0)
-    , moveTransition(0), moveDisplacedTransition(0)
-    , removeTransition(0), removeDisplacedTransition(0)
-    , displacedTransition(0)
-    , changeListener(0)
+    : populateTransition(nullptr)
+    , addTransition(nullptr), addDisplacedTransition(nullptr)
+    , moveTransition(nullptr), moveDisplacedTransition(nullptr)
+    , removeTransition(nullptr), removeDisplacedTransition(nullptr)
+    , displacedTransition(nullptr)
+    , changeListener(nullptr)
     , usePopulateTransition(false)
 {
 }
@@ -172,7 +172,7 @@ QQuickItemViewTransitioner::~QQuickItemViewTransitioner()
     typedef QSet<QQuickItemViewTransitionJob *>::iterator JobIt;
 
     for (JobIt it = runningJobs.begin(), end = runningJobs.end(); it != end; ++it)
-        (*it)->m_transitioner = 0;
+        (*it)->m_transitioner = nullptr;
 }
 
 bool QQuickItemViewTransitioner::canTransition(QQuickItemViewTransitioner::TransitionType type, bool asTarget) const
@@ -249,12 +249,12 @@ void QQuickItemViewTransitioner::resetTargetLists()
 QQuickTransition *QQuickItemViewTransitioner::transitionObject(QQuickItemViewTransitioner::TransitionType type, bool asTarget) const
 {
     if (type == QQuickItemViewTransitioner::NoTransition)
-        return 0;
+        return nullptr;
 
     if (type == PopulateTransition)
         asTarget = true;    // no separate displaced transition
 
-    QQuickTransition *trans = 0;
+    QQuickTransition *trans = nullptr;
     switch (type) {
     case NoTransition:
         break;
@@ -276,7 +276,7 @@ QQuickTransition *QQuickItemViewTransitioner::transitionObject(QQuickItemViewTra
         trans = displacedTransition;
     if (trans && trans->enabled())
         return trans;
-    return 0;
+    return nullptr;
 }
 
 const QList<int> &QQuickItemViewTransitioner::targetIndexes(QQuickItemViewTransitioner::TransitionType type) const
@@ -328,7 +328,7 @@ void QQuickItemViewTransitioner::finishedTransition(QQuickItemViewTransitionJob
 
 QQuickItemViewTransitionableItem::QQuickItemViewTransitionableItem(QQuickItem *i)
     : item(i)
-    , transition(0)
+    , transition(nullptr)
     , nextTransitionType(QQuickItemViewTransitioner::NoTransition)
     , isTransitionTarget(false)
     , nextTransitionToSet(false)
@@ -563,7 +563,7 @@ void QQuickItemViewTransitionableItem::stopTransition()
 
 
 QQuickViewTransitionAttached::QQuickViewTransitionAttached(QObject *parent)
-    : QObject(parent), m_item(0), m_index(-1)
+    : QObject(parent), m_item(nullptr), m_index(-1)
 {
 }
 /*!
diff --git a/src/quick/items/qquicklistview.cpp b/src/quick/items/qquicklistview.cpp
index 54dfbafaa2..33becd71ec 100644
--- a/src/quick/items/qquicklistview.cpp
+++ b/src/quick/items/qquicklistview.cpp
@@ -176,9 +176,9 @@ public:
         , snapMode(QQuickListView::NoSnap)
         , headerPositioning(QQuickListView::InlineHeader)
         , footerPositioning(QQuickListView::InlineFooter)
-        , highlightPosAnimator(0), highlightWidthAnimator(0), highlightHeightAnimator(0)
+        , highlightPosAnimator(nullptr), highlightWidthAnimator(nullptr), highlightHeightAnimator(nullptr)
         , highlightMoveVelocity(400), highlightResizeVelocity(400), highlightResizeDuration(-1)
-        , sectionCriteria(0), currentSectionItem(0), nextSectionItem(0)
+        , sectionCriteria(nullptr), currentSectionItem(nullptr), nextSectionItem(nullptr)
         , overshootDist(0.0), correctFlick(false), inFlickCorrection(false)
     {
         highlightMoveDuration = -1; //override default value set in base class
@@ -195,8 +195,8 @@ public:
 //----------------------------------------------------------------------------
 
 QQuickViewSection::QQuickViewSection(QQuickListView *parent)
-    : QObject(parent), m_criteria(FullString), m_delegate(0), m_labelPositioning(InlineLabels)
-    , m_view(parent ? QQuickListViewPrivate::get(parent) : 0)
+    : QObject(parent), m_criteria(FullString), m_delegate(nullptr), m_labelPositioning(InlineLabels)
+    , m_view(parent ? QQuickListViewPrivate::get(parent) : nullptr)
 {
 }
 
@@ -258,7 +258,7 @@ public:
     }
 
     inline QQuickItem *section() const {
-        return item && attached ? static_cast<QQuickListViewAttached*>(attached)->m_sectionItem : 0;
+        return item && attached ? static_cast<QQuickListViewAttached*>(attached)->m_sectionItem : nullptr;
     }
     void setSection(QQuickItem *s) {
         static_cast<QQuickListViewAttached*>(attached)->m_sectionItem = s;
@@ -389,7 +389,7 @@ bool QQuickListViewPrivate::isBottomToTop() const
 FxViewItem *QQuickListViewPrivate::itemBefore(int modelIndex) const
 {
     if (modelIndex < visibleIndex)
-        return 0;
+        return nullptr;
     int idx = 1;
     int lastIndex = -1;
     while (idx < visibleItems.count()) {
@@ -402,7 +402,7 @@ FxViewItem *QQuickListViewPrivate::itemBefore(int modelIndex) const
     }
     if (lastIndex == modelIndex-1)
         return visibleItems.constLast();
-    return 0;
+    return nullptr;
 }
 
 void QQuickListViewPrivate::setPosition(qreal pos)
@@ -530,7 +530,7 @@ qreal QQuickListViewPrivate::snapPosAt(qreal pos)
 
 FxViewItem *QQuickListViewPrivate::snapItemAt(qreal pos)
 {
-    FxViewItem *snapItem = 0;
+    FxViewItem *snapItem = nullptr;
     qreal prevItemSize = 0;
     for (FxViewItem *item : qAsConst(visibleItems)) {
         if (item->index == -1)
@@ -561,13 +561,13 @@ void QQuickListViewPrivate::clear()
 {
     for (int i = 0; i < sectionCacheSize; ++i) {
         delete sectionCache[i];
-        sectionCache[i] = 0;
+        sectionCache[i] = nullptr;
     }
     visiblePos = 0;
     releaseSectionItem(currentSectionItem);
-    currentSectionItem = 0;
+    currentSectionItem = nullptr;
     releaseSectionItem(nextSectionItem);
-    nextSectionItem = 0;
+    nextSectionItem = nullptr;
     lastVisibleSection = QString();
     QQuickItemViewPrivate::clear();
 }
@@ -629,13 +629,13 @@ bool QQuickListViewPrivate::releaseItem(FxViewItem *item)
             if (!sectionCache[i]) {
                 sectionCache[i] = att->m_sectionItem;
                 sectionCache[i]->setVisible(false);
-                att->m_sectionItem = 0;
+                att->m_sectionItem = nullptr;
                 break;
             }
             ++i;
         } while (i < sectionCacheSize);
         delete att->m_sectionItem;
-        att->m_sectionItem = 0;
+        att->m_sectionItem = nullptr;
     }
 
     return released;
@@ -672,7 +672,7 @@ bool QQuickListViewPrivate::addVisibleItems(qreal fillFrom, qreal fillTo, qreal
     QQmlIncubator::IncubationMode incubationMode = doBuffer ? QQmlIncubator::Asynchronous : QQmlIncubator::AsynchronousIfNested;
 
     bool changed = false;
-    FxListItemSG *item = 0;
+    FxListItemSG *item = nullptr;
     qreal pos = itemEnd;
     while (modelIndex < model->count() && pos <= fillTo) {
         if (!(item = static_cast<FxListItemSG*>(createItem(modelIndex, incubationMode))))
@@ -722,7 +722,7 @@ void QQuickListViewPrivate::removeItem(FxViewItem *item)
 
 bool QQuickListViewPrivate::removeNonVisibleItems(qreal bufferFrom, qreal bufferTo)
 {
-    FxViewItem *item = 0;
+    FxViewItem *item = nullptr;
     bool changed = false;
 
     // Remove items from the start of the view.
@@ -864,16 +864,16 @@ void QQuickListViewPrivate::createHighlight()
     bool changed = false;
     if (highlight) {
         if (trackedItem == highlight)
-            trackedItem = 0;
+            trackedItem = nullptr;
         delete highlight;
-        highlight = 0;
+        highlight = nullptr;
 
         delete highlightPosAnimator;
         delete highlightWidthAnimator;
         delete highlightHeightAnimator;
-        highlightPosAnimator = 0;
-        highlightWidthAnimator = 0;
-        highlightHeightAnimator = 0;
+        highlightPosAnimator = nullptr;
+        highlightWidthAnimator = nullptr;
+        highlightHeightAnimator = nullptr;
 
         changed = true;
     }
@@ -962,13 +962,13 @@ bool QQuickListViewPrivate::movingFromHighlight()
 QQuickItem * QQuickListViewPrivate::getSectionItem(const QString &section)
 {
     Q_Q(QQuickListView);
-    QQuickItem *sectionItem = 0;
+    QQuickItem *sectionItem = nullptr;
     int i = sectionCacheSize-1;
     while (i >= 0 && !sectionCache[i])
         --i;
     if (i >= 0) {
         sectionItem = sectionCache[i];
-        sectionCache[i] = 0;
+        sectionCache[i] = nullptr;
         sectionItem->setVisible(true);
         QQmlContext *context = QQmlEngine::contextForObject(sectionItem)->parentContext();
         context->setContextProperty(QLatin1String("section"), section);
@@ -1025,13 +1025,13 @@ void QQuickListViewPrivate::releaseSectionItems()
         if (listItem->section()) {
             qreal pos = listItem->position();
             releaseSectionItem(listItem->section());
-            listItem->setSection(0);
+            listItem->setSection(nullptr);
             listItem->setPosition(pos);
         }
     }
     for (int i = 0; i < sectionCacheSize; ++i) {
         delete sectionCache[i];
-        sectionCache[i] = 0;
+        sectionCache[i] = nullptr;
     }
 }
 
@@ -1053,7 +1053,7 @@ void QQuickListViewPrivate::updateInlineSection(FxListItemSG *listItem)
     } else if (listItem->section()) {
         qreal pos = listItem->position();
         releaseSectionItem(listItem->section());
-        listItem->setSection(0);
+        listItem->setSection(nullptr);
         listItem->setPosition(pos);
     }
 }
@@ -1069,8 +1069,8 @@ void QQuickListViewPrivate::updateStickySections()
     qreal startPos = hasStickyHeader() ? header->endPosition() : viewPos;
     qreal endPos = hasStickyFooter() ? footer->position() : viewPos + size();
 
-    QQuickItem *sectionItem = 0;
-    QQuickItem *lastSectionItem = 0;
+    QQuickItem *sectionItem = nullptr;
+    QQuickItem *lastSectionItem = nullptr;
     int index = 0;
     while (index < visibleItems.count()) {
         if (QQuickItem *section = static_cast<FxListItemSG *>(visibleItems.at(index))->section()) {
@@ -1129,7 +1129,7 @@ void QQuickListViewPrivate::updateStickySections()
             currentSectionItem->setX(pos);
     } else if (currentSectionItem) {
         releaseSectionItem(currentSectionItem);
-        currentSectionItem = 0;
+        currentSectionItem = nullptr;
     }
 
     // Next section footer
@@ -1161,7 +1161,7 @@ void QQuickListViewPrivate::updateStickySections()
             nextSectionItem->setX(pos);
     } else if (nextSectionItem) {
         releaseSectionItem(nextSectionItem);
-        nextSectionItem = 0;
+        nextSectionItem = nullptr;
     }
 }
 
@@ -1177,7 +1177,7 @@ void QQuickListViewPrivate::updateSections()
         QString prevSection;
         if (visibleIndex > 0)
             prevSection = sectionAt(visibleIndex-1);
-        QQuickListViewAttached *prevAtt = 0;
+        QQuickListViewAttached *prevAtt = nullptr;
         int prevIdx = -1;
         int idx = -1;
         for (FxViewItem *item : qAsConst(visibleItems)) {
@@ -3266,7 +3266,7 @@ bool QQuickListViewPrivate::applyInsertionChange(const QQmlChangeSet::Change &ch
         } else {
             for (i = count-1; i >= 0 && pos >= from; --i) {
                 // item is before first visible e.g. in cache buffer
-                FxViewItem *item = 0;
+                FxViewItem *item = nullptr;
                 if (change.isMove() && (item = currentChanges.removedItems.take(change.moveKey(modelIndex + i))))
                     item->index = modelIndex + i;
                 if (!item)
@@ -3307,7 +3307,7 @@ bool QQuickListViewPrivate::applyInsertionChange(const QQmlChangeSet::Change &ch
     } else {
         for (int i = 0; i < count && pos <= lastVisiblePos; ++i) {
             visibleAffected = true;
-            FxViewItem *item = 0;
+            FxViewItem *item = nullptr;
             if (change.isMove() && (item = currentChanges.removedItems.take(change.moveKey(modelIndex + i))))
                 item->index = modelIndex + i;
             bool newItem = !item;
diff --git a/src/quick/items/qquicklistview_p.h b/src/quick/items/qquicklistview_p.h
index f8db0f0f8f..9a9b325b1e 100644
--- a/src/quick/items/qquicklistview_p.h
+++ b/src/quick/items/qquicklistview_p.h
@@ -71,7 +71,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickViewSection : public QObject
     Q_PROPERTY(QQmlComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)
     Q_PROPERTY(int labelPositioning READ labelPositioning WRITE setLabelPositioning NOTIFY labelPositioningChanged)
 public:
-    QQuickViewSection(QQuickListView *parent=0);
+    QQuickViewSection(QQuickListView *parent=nullptr);
 
     QString property() const { return m_property; }
     void setProperty(const QString &);
@@ -132,7 +132,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickListView : public QQuickItemView
     Q_CLASSINFO("DefaultProperty", "data")
 
 public:
-    QQuickListView(QQuickItem *parent=0);
+    QQuickListView(QQuickItem *parent=nullptr);
     ~QQuickListView();
 
     qreal spacing() const;
@@ -206,7 +206,7 @@ class QQuickListViewAttached : public QQuickItemViewAttached
 
 public:
     QQuickListViewAttached(QObject *parent)
-        : QQuickItemViewAttached(parent), m_sectionItem(0) {}
+        : QQuickItemViewAttached(parent), m_sectionItem(nullptr) {}
     ~QQuickListViewAttached() {}
 
 public:
diff --git a/src/quick/items/qquickloader.cpp b/src/quick/items/qquickloader.cpp
index 33e22c1e95..34f30e81a3 100644
--- a/src/quick/items/qquickloader.cpp
+++ b/src/quick/items/qquickloader.cpp
@@ -54,7 +54,7 @@ static const QQuickItemPrivate::ChangeTypes watchedChanges
     = QQuickItemPrivate::Geometry | QQuickItemPrivate::ImplicitWidth | QQuickItemPrivate::ImplicitHeight;
 
 QQuickLoaderPrivate::QQuickLoaderPrivate()
-    : item(0), object(0), component(0), itemContext(0), incubator(0), updatingSize(false),
+    : item(nullptr), object(nullptr), component(nullptr), itemContext(nullptr), incubator(nullptr), updatingSize(false),
       active(true), loadingFromSource(false), asynchronous(false)
 {
 }
@@ -62,7 +62,7 @@ QQuickLoaderPrivate::QQuickLoaderPrivate()
 QQuickLoaderPrivate::~QQuickLoaderPrivate()
 {
     delete itemContext;
-    itemContext = 0;
+    itemContext = nullptr;
     delete incubator;
     disposeInitialPropertyValues();
 }
@@ -96,7 +96,7 @@ void QQuickLoaderPrivate::clear()
         incubator->clear();
 
     delete itemContext;
-    itemContext = 0;
+    itemContext = nullptr;
 
     // Prevent any bindings from running while waiting for deletion. Without
     // this we may get transient errors from use of 'parent', for example.
@@ -111,7 +111,7 @@ void QQuickLoaderPrivate::clear()
         QObject::disconnect(component, SIGNAL(progressChanged(qreal)),
                 q, SIGNAL(progressChanged()));
         component->deleteLater();
-        component = 0;
+        component = nullptr;
     }
     componentStrongReference.clear();
     source = QUrl();
@@ -122,13 +122,13 @@ void QQuickLoaderPrivate::clear()
 
         // We can't delete immediately because our item may have triggered
         // the Loader to load a different item.
-        item->setParentItem(0);
+        item->setParentItem(nullptr);
         item->setVisible(false);
-        item = 0;
+        item = nullptr;
     }
     if (object) {
         object->deleteLater();
-        object = 0;
+        object = nullptr;
     }
 }
 
@@ -356,7 +356,7 @@ void QQuickLoader::setActive(bool newVal)
         if (d->incubator) {
             d->incubator->clear();
             delete d->itemContext;
-            d->itemContext = 0;
+            d->itemContext = nullptr;
         }
 
         // Prevent any bindings from running while waiting for deletion. Without
@@ -371,13 +371,13 @@ void QQuickLoader::setActive(bool newVal)
 
             // We can't delete immediately because our item may have triggered
             // the Loader to load a different item.
-            d->item->setParentItem(0);
+            d->item->setParentItem(nullptr);
             d->item->setVisible(false);
-            d->item = 0;
+            d->item = nullptr;
         }
         if (d->object) {
             d->object->deleteLater();
-            d->object = 0;
+            d->object = nullptr;
             emit itemChanged();
         }
         emit statusChanged();
@@ -499,7 +499,7 @@ void QQuickLoader::setSourceComponent(QQmlComponent *comp)
 
 void QQuickLoader::resetSourceComponent()
 {
-    setSourceComponent(0);
+    setSourceComponent(nullptr);
 }
 
 void QQuickLoader::loadFromSourceComponent()
@@ -656,7 +656,7 @@ void QQuickLoaderPrivate::setInitialState(QObject *obj)
     if (obj) {
         QQml_setParent_noEvent(itemContext, obj);
         QQml_setParent_noEvent(obj, q);
-        itemContext = 0;
+        itemContext = nullptr;
     }
 
     if (initialPropertyValues.isUndefined())
@@ -700,7 +700,7 @@ void QQuickLoaderPrivate::incubatorStateChanged(QQmlIncubator::Status status)
         if (!incubator->errors().isEmpty())
             QQmlEnginePrivate::warning(qmlEngine(q), incubator->errors());
         delete itemContext;
-        itemContext = 0;
+        itemContext = nullptr;
         delete incubator->object();
         source = QUrl();
         emit q->itemChanged();
diff --git a/src/quick/items/qquickloader_p.h b/src/quick/items/qquickloader_p.h
index b5137c0783..de1dfa9da5 100644
--- a/src/quick/items/qquickloader_p.h
+++ b/src/quick/items/qquickloader_p.h
@@ -69,7 +69,7 @@ class Q_AUTOTEST_EXPORT QQuickLoader : public QQuickImplicitSizeItem
     Q_PROPERTY(bool asynchronous READ asynchronous WRITE setAsynchronous NOTIFY asynchronousChanged)
 
 public:
-    QQuickLoader(QQuickItem *parent = 0);
+    QQuickLoader(QQuickItem *parent = nullptr);
     virtual ~QQuickLoader();
 
     bool active() const;
diff --git a/src/quick/items/qquickmousearea.cpp b/src/quick/items/qquickmousearea.cpp
index cea8293ceb..052da9fe82 100644
--- a/src/quick/items/qquickmousearea.cpp
+++ b/src/quick/items/qquickmousearea.cpp
@@ -60,13 +60,13 @@ Q_DECLARE_LOGGING_CATEGORY(DBG_HOVER_TRACE)
 QQuickMouseAreaPrivate::QQuickMouseAreaPrivate()
 : enabled(true), scrollGestureEnabled(true), hovered(false), longPress(false),
   moved(false), stealMouse(false), doubleClick(false), preventStealing(false),
-  propagateComposedEvents(false), overThreshold(false), pressed(0),
+  propagateComposedEvents(false), overThreshold(false), pressed(nullptr),
   pressAndHoldInterval(-1)
 #if QT_CONFIG(draganddrop)
-  , drag(0)
+  , drag(nullptr)
 #endif
 #if QT_CONFIG(cursor)
-  , cursor(0)
+  , cursor(nullptr)
 #endif
 {
 }
@@ -910,7 +910,7 @@ void QQuickMouseArea::ungrabMouse()
     if (d->pressed) {
         // if our mouse grab has been removed (probably by Flickable), fix our
         // state
-        d->pressed = 0;
+        d->pressed = nullptr;
         d->stealMouse = false;
         d->doubleClick = false;
         d->overThreshold = false;
@@ -944,7 +944,7 @@ bool QQuickMouseArea::sendMouseEvent(QMouseEvent *event)
     QPointF localPos = mapFromScene(event->windowPos());
 
     QQuickWindow *c = window();
-    QQuickItem *grabber = c ? c->mouseGrabberItem() : 0;
+    QQuickItem *grabber = c ? c->mouseGrabberItem() : nullptr;
     bool stealThisEvent = d->stealMouse;
     if ((stealThisEvent || contains(localPos)) && (!grabber || !grabber->keepMouseGrab())) {
         QMouseEvent mouseEvent(event->type(), localPos, event->windowPos(), event->screenPos(),
@@ -965,7 +965,7 @@ bool QQuickMouseArea::sendMouseEvent(QMouseEvent *event)
         default:
             break;
         }
-        grabber = c ? c->mouseGrabberItem() : 0;
+        grabber = c ? c->mouseGrabberItem() : nullptr;
         if (grabber && stealThisEvent && !grabber->keepMouseGrab() && grabber != this)
             grabMouse();
 
@@ -1420,7 +1420,7 @@ QSGNode *QQuickMouseArea::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData
     Q_D(QQuickMouseArea);
 
     if (!qmlVisualTouchDebugging())
-        return 0;
+        return nullptr;
 
     QSGInternalRectangleNode *rectangle = static_cast<QSGInternalRectangleNode *>(oldNode);
     if (!rectangle) rectangle = d->sceneGraphContext()->createInternalRectangleNode();
diff --git a/src/quick/items/qquickmousearea_p.h b/src/quick/items/qquickmousearea_p.h
index ae6c56726e..0a8449957f 100644
--- a/src/quick/items/qquickmousearea_p.h
+++ b/src/quick/items/qquickmousearea_p.h
@@ -87,7 +87,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickMouseArea : public QQuickItem
     Q_PROPERTY(int pressAndHoldInterval READ pressAndHoldInterval WRITE setPressAndHoldInterval NOTIFY pressAndHoldIntervalChanged RESET resetPressAndHoldInterval REVISION 9)
 
 public:
-    QQuickMouseArea(QQuickItem *parent=0);
+    QQuickMouseArea(QQuickItem *parent=nullptr);
     ~QQuickMouseArea();
 
     qreal mouseX() const;
diff --git a/src/quick/items/qquickmultipointtoucharea.cpp b/src/quick/items/qquickmultipointtoucharea.cpp
index 514d0f5d37..dc168073e4 100644
--- a/src/quick/items/qquickmultipointtoucharea.cpp
+++ b/src/quick/items/qquickmultipointtoucharea.cpp
@@ -541,7 +541,7 @@ void QQuickMultiPointTouchArea::touchEvent(QTouchEvent *event)
     case QEvent::TouchEnd: {
         //if e.g. a parent Flickable has the mouse grab, don't process the touch events
         QQuickWindow *c = window();
-        QQuickItem *grabber = c ? c->mouseGrabberItem() : 0;
+        QQuickItem *grabber = c ? c->mouseGrabberItem() : nullptr;
         if (grabber && grabber != this && grabber->keepMouseGrab() && grabber->isEnabled()) {
             QQuickItem *item = this;
             while ((item = item->parentItem())) {
@@ -719,7 +719,7 @@ void QQuickMultiPointTouchArea::clearTouchLists()
 
 void QQuickMultiPointTouchArea::addTouchPoint(const QTouchEvent::TouchPoint *p)
 {
-    QQuickTouchPoint *dtp = 0;
+    QQuickTouchPoint *dtp = nullptr;
     for (QQuickTouchPoint* tp : qAsConst(_touchPrototypes)) {
         if (!tp->inUse()) {
             tp->setInUse(true);
@@ -728,7 +728,7 @@ void QQuickMultiPointTouchArea::addTouchPoint(const QTouchEvent::TouchPoint *p)
         }
     }
 
-    if (dtp == 0)
+    if (dtp == nullptr)
         dtp = new QQuickTouchPoint(false);
     dtp->setPointId(p->id());
     updateTouchPoint(dtp,p);
@@ -739,7 +739,7 @@ void QQuickMultiPointTouchArea::addTouchPoint(const QTouchEvent::TouchPoint *p)
 
 void QQuickMultiPointTouchArea::addTouchPoint(const QMouseEvent *e)
 {
-    QQuickTouchPoint *dtp = 0;
+    QQuickTouchPoint *dtp = nullptr;
     for (QQuickTouchPoint *tp : qAsConst(_touchPrototypes))
         if (!tp->inUse()) {
             tp->setInUse(true);
@@ -747,7 +747,7 @@ void QQuickMultiPointTouchArea::addTouchPoint(const QMouseEvent *e)
             break;
         }
 
-    if (dtp == 0)
+    if (dtp == nullptr)
         dtp = new QQuickTouchPoint(false);
     updateTouchPoint(dtp, e);
     dtp->setPressed(true);
@@ -920,7 +920,7 @@ bool QQuickMultiPointTouchArea::sendMouseEvent(QMouseEvent *event)
     QPointF localPos = mapFromScene(event->windowPos());
 
     QQuickWindow *c = window();
-    QQuickItem *grabber = c ? c->mouseGrabberItem() : 0;
+    QQuickItem *grabber = c ? c->mouseGrabberItem() : nullptr;
     bool stealThisEvent = _stealMouse;
     if ((stealThisEvent || contains(localPos)) && (!grabber || !grabber->keepMouseGrab())) {
         QMouseEvent mouseEvent(event->type(), localPos, event->windowPos(), event->screenPos(),
@@ -944,7 +944,7 @@ bool QQuickMultiPointTouchArea::sendMouseEvent(QMouseEvent *event)
         default:
             break;
         }
-        grabber = c ? c->mouseGrabberItem() : 0;
+        grabber = c ? c->mouseGrabberItem() : nullptr;
         if (grabber && stealThisEvent && !grabber->keepMouseGrab() && grabber != this)
             grabMouse();
 
@@ -991,7 +991,7 @@ bool QQuickMultiPointTouchArea::childMouseEventFilter(QQuickItem *receiver, QEve
 bool QQuickMultiPointTouchArea::shouldFilter(QEvent *event)
 {
     QQuickWindow *c = window();
-    QQuickItem *grabber = c ? c->mouseGrabberItem() : 0;
+    QQuickItem *grabber = c ? c->mouseGrabberItem() : nullptr;
     bool disabledItem = grabber && !grabber->isEnabled();
     bool stealThisEvent = _stealMouse;
     bool containsPoint = false;
@@ -1032,7 +1032,7 @@ QSGNode *QQuickMultiPointTouchArea::updatePaintNode(QSGNode *oldNode, UpdatePain
     Q_UNUSED(data);
 
     if (!qmlVisualTouchDebugging())
-        return 0;
+        return nullptr;
 
     QSGInternalRectangleNode *rectangle = static_cast<QSGInternalRectangleNode *>(oldNode);
     if (!rectangle) rectangle = QQuickItemPrivate::get(this)->sceneGraphContext()->createInternalRectangleNode();
diff --git a/src/quick/items/qquickmultipointtoucharea_p.h b/src/quick/items/qquickmultipointtoucharea_p.h
index 64fe81563d..a6acdfc97d 100644
--- a/src/quick/items/qquickmultipointtoucharea_p.h
+++ b/src/quick/items/qquickmultipointtoucharea_p.h
@@ -224,7 +224,7 @@ class Q_AUTOTEST_EXPORT QQuickMultiPointTouchArea : public QQuickItem
     Q_PROPERTY(bool mouseEnabled READ mouseEnabled WRITE setMouseEnabled NOTIFY mouseEnabledChanged)
 
 public:
-    QQuickMultiPointTouchArea(QQuickItem *parent=0);
+    QQuickMultiPointTouchArea(QQuickItem *parent=nullptr);
     ~QQuickMultiPointTouchArea();
 
     int minimumTouchPoints() const;
@@ -235,7 +235,7 @@ public:
     void setMouseEnabled(bool arg);
 
     QQmlListProperty<QQuickTouchPoint> touchPoints() {
-        return QQmlListProperty<QQuickTouchPoint>(this, 0, QQuickMultiPointTouchArea::touchPoint_append, QQuickMultiPointTouchArea::touchPoint_count, QQuickMultiPointTouchArea::touchPoint_at, 0);
+        return QQmlListProperty<QQuickTouchPoint>(this, nullptr, QQuickMultiPointTouchArea::touchPoint_append, QQuickMultiPointTouchArea::touchPoint_count, QQuickMultiPointTouchArea::touchPoint_at, nullptr);
     }
 
     static void touchPoint_append(QQmlListProperty<QQuickTouchPoint> *list, QQuickTouchPoint* touch) {
diff --git a/src/quick/items/qquickopenglinfo.cpp b/src/quick/items/qquickopenglinfo.cpp
index 7f5364031a..73f9c85e94 100644
--- a/src/quick/items/qquickopenglinfo.cpp
+++ b/src/quick/items/qquickopenglinfo.cpp
@@ -69,7 +69,7 @@ QT_BEGIN_NAMESPACE
  */
 QQuickOpenGLInfo::QQuickOpenGLInfo(QQuickItem *item)
     : QObject(item)
-    , m_window(0)
+    , m_window(nullptr)
     , m_majorVersion(2)
     , m_minorVersion(0)
     , m_profile(NoProfile)
@@ -150,12 +150,12 @@ QQuickOpenGLInfo *QQuickOpenGLInfo::qmlAttachedProperties(QObject *object)
 {
     if (QQuickItem *item = qobject_cast<QQuickItem *>(object))
         return new QQuickOpenGLInfo(item);
-    return 0;
+    return nullptr;
 }
 
 void QQuickOpenGLInfo::updateFormat()
 {
-    QOpenGLContext *context = 0;
+    QOpenGLContext *context = nullptr;
     if (m_window)
         context = m_window->openglContext();
     QSurfaceFormat format = context ? context->format() : QSurfaceFormat::defaultFormat();
diff --git a/src/quick/items/qquickopenglshadereffect.cpp b/src/quick/items/qquickopenglshadereffect.cpp
index 3194aa3cd0..cad598d2c0 100644
--- a/src/quick/items/qquickopenglshadereffect.cpp
+++ b/src/quick/items/qquickopenglshadereffect.cpp
@@ -484,7 +484,7 @@ void QQuickOpenGLShaderEffectCommon::updateMaterial(QQuickOpenGLShaderEffectNode
                 if (d.specialType != UniformData::Sampler && d.specialType != UniformData::SamplerExternal)
                     continue;
                 QSGTextureProvider *oldProvider = material->textureProviders.at(index);
-                QSGTextureProvider *newProvider = 0;
+                QSGTextureProvider *newProvider = nullptr;
                 QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(d.value));
                 if (source && source->isTextureProvider())
                     newProvider = source->textureProvider();
@@ -624,7 +624,7 @@ QQuickOpenGLShaderEffect::QQuickOpenGLShaderEffect(QQuickShaderEffect *item, QOb
     , m_item(item)
     , m_itemMetaObject(nullptr)
     , m_meshResolution(1, 1)
-    , m_mesh(0)
+    , m_mesh(nullptr)
     , m_cullMode(QQuickShaderEffect::NoCulling)
     , m_status(QQuickShaderEffect::Uncompiled)
     , m_common(this, [this](int mappedId){this->propertyChanged(mappedId);})
@@ -713,7 +713,7 @@ void QQuickOpenGLShaderEffect::setMesh(const QVariant &mesh)
     if (newMesh && newMesh == m_mesh)
         return;
     if (m_mesh)
-        disconnect(m_mesh, SIGNAL(geometryChanged()), this, 0);
+        disconnect(m_mesh, SIGNAL(geometryChanged()), this, nullptr);
     m_mesh = newMesh;
     if (m_mesh) {
         connect(m_mesh, SIGNAL(geometryChanged()), this, SLOT(updateGeometry()));
@@ -766,7 +766,7 @@ QString QQuickOpenGLShaderEffect::parseLog()
     maybeUpdateShaders(true);
 
     if (m_dirtyParseLog) {
-        m_common.updateParseLog(m_mesh != 0);
+        m_common.updateParseLog(m_mesh != nullptr);
         m_dirtyParseLog = false;
     }
     return m_common.parseLog;
@@ -838,7 +838,7 @@ QSGNode *QQuickOpenGLShaderEffect::handleUpdatePaintNode(QSGNode *oldNode, QQuic
     if (m_common.attributes.isEmpty() || m_item->width() <= 0 || m_item->height() <= 0) {
         if (node)
             delete node;
-        return 0;
+        return nullptr;
     }
 
     if (!node) {
@@ -914,7 +914,7 @@ QSGNode *QQuickOpenGLShaderEffect::handleUpdatePaintNode(QSGNode *oldNode, QQuic
     }
 
     if (m_dirtyMesh) {
-        node->setGeometry(0);
+        node->setGeometry(nullptr);
         m_dirtyMesh = false;
         m_dirtyGeometry = true;
     }
@@ -935,7 +935,7 @@ QSGNode *QQuickOpenGLShaderEffect::handleUpdatePaintNode(QSGNode *oldNode, QQuic
                 emit m_item->statusChanged();
             }
             delete node;
-            return 0;
+            return nullptr;
         }
 
         geometry = mesh->updateGeometry(geometry, m_common.attributes.count(), posIndex, srcRect, rect);
diff --git a/src/quick/items/qquickopenglshadereffect_p.h b/src/quick/items/qquickopenglshadereffect_p.h
index bc2e2975ee..3d1d8c426c 100644
--- a/src/quick/items/qquickopenglshadereffect_p.h
+++ b/src/quick/items/qquickopenglshadereffect_p.h
@@ -120,7 +120,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickOpenGLShaderEffect : public QObject
     Q_OBJECT
 
 public:
-    QQuickOpenGLShaderEffect(QQuickShaderEffect *item, QObject *parent = 0);
+    QQuickOpenGLShaderEffect(QQuickShaderEffect *item, QObject *parent = nullptr);
     ~QQuickOpenGLShaderEffect();
 
     QByteArray fragmentShader() const { return m_common.source.sourceCode[Key::FragmentShader]; }
diff --git a/src/quick/items/qquickopenglshadereffectnode.cpp b/src/quick/items/qquickopenglshadereffectnode.cpp
index a6431135eb..d51419a275 100644
--- a/src/quick/items/qquickopenglshadereffectnode.cpp
+++ b/src/quick/items/qquickopenglshadereffectnode.cpp
@@ -111,7 +111,7 @@ void QQuickCustomMaterialShader::updateState(const RenderState &state, QSGMateri
 {
     typedef QQuickOpenGLShaderEffectMaterial::UniformData UniformData;
 
-    Q_ASSERT(newEffect != 0);
+    Q_ASSERT(newEffect != nullptr);
 
     QQuickOpenGLShaderEffectMaterial *material = static_cast<QQuickOpenGLShaderEffectMaterial *>(newEffect);
     if (!material->m_emittedLogChanged && material->m_node) {
@@ -239,7 +239,7 @@ void QQuickCustomMaterialShader::updateState(const RenderState &state, QSGMateri
     functions->glActiveTexture(GL_TEXTURE0);
 
     const QQuickOpenGLShaderEffectMaterial *oldMaterial = static_cast<const QQuickOpenGLShaderEffectMaterial *>(oldEffect);
-    if (oldEffect == 0 || material->cullMode != oldMaterial->cullMode) {
+    if (oldEffect == nullptr || material->cullMode != oldMaterial->cullMode) {
         switch (material->cullMode) {
         case QQuickShaderEffect::FrontFaceCulling:
             functions->glEnable(GL_CULL_FACE);
diff --git a/src/quick/items/qquickopenglshadereffectnode_p.h b/src/quick/items/qquickopenglshadereffectnode_p.h
index 68eece7660..029533ac9d 100644
--- a/src/quick/items/qquickopenglshadereffectnode_p.h
+++ b/src/quick/items/qquickopenglshadereffectnode_p.h
@@ -109,7 +109,7 @@ public:
         }
     };
 
-    explicit QQuickOpenGLShaderEffectMaterial(QQuickOpenGLShaderEffectNode *node = 0);
+    explicit QQuickOpenGLShaderEffectMaterial(QQuickOpenGLShaderEffectNode *node = nullptr);
     QSGMaterialType *type() const override;
     QSGMaterialShader *createShader() const override;
     int compare(const QSGMaterial *other) const override;
diff --git a/src/quick/items/qquickpainteditem.cpp b/src/quick/items/qquickpainteditem.cpp
index 34d71f00e8..197c4c6348 100644
--- a/src/quick/items/qquickpainteditem.cpp
+++ b/src/quick/items/qquickpainteditem.cpp
@@ -53,7 +53,7 @@ class QQuickPaintedItemTextureProvider : public QSGTextureProvider
 {
 public:
     QSGPainterNode *node;
-    QSGTexture *texture() const override { return node ? node->texture() : 0; }
+    QSGTexture *texture() const override { return node ? node->texture() : nullptr; }
     void fireTextureChanged() { emit textureChanged(); }
 };
 
@@ -133,12 +133,12 @@ QQuickPaintedItemPrivate::QQuickPaintedItemPrivate()
     , contentsScale(1.0)
     , fillColor(Qt::transparent)
     , renderTarget(QQuickPaintedItem::Image)
-    , performanceHints(0)
+    , performanceHints(nullptr)
     , opaquePainting(false)
     , antialiasing(false)
     , mipmap(false)
-    , textureProvider(0)
-    , node(0)
+    , textureProvider(nullptr)
+    , node(nullptr)
 {
 }
 
@@ -566,10 +566,10 @@ QSGNode *QQuickPaintedItem::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeDat
     if (width() <= 0 || height() <= 0) {
         delete oldNode;
         if (d->textureProvider) {
-            d->textureProvider->node = 0;
+            d->textureProvider->node = nullptr;
             d->textureProvider->fireTextureChanged();
         }
-        return 0;
+        return nullptr;
     }
 
     QSGPainterNode *node = static_cast<QSGPainterNode *>(oldNode);
@@ -628,17 +628,17 @@ void QQuickPaintedItem::releaseResources()
     Q_D(QQuickPaintedItem);
     if (d->textureProvider) {
         QQuickWindowQObjectCleanupJob::schedule(window(), d->textureProvider);
-        d->textureProvider = 0;
+        d->textureProvider = nullptr;
     }
-    d->node = 0; // Managed by the scene graph, just clear the pointer.
+    d->node = nullptr; // Managed by the scene graph, just clear the pointer.
 }
 
 void QQuickPaintedItem::invalidateSceneGraph()
 {
     Q_D(QQuickPaintedItem);
     delete d->textureProvider;
-    d->textureProvider = 0;
-    d->node = 0; // Managed by the scene graph, just clear the pointer
+    d->textureProvider = nullptr;
+    d->node = nullptr; // Managed by the scene graph, just clear the pointer
 }
 
 /*!
@@ -666,7 +666,7 @@ QSGTextureProvider *QQuickPaintedItem::textureProvider() const
     QQuickWindow *w = window();
     if (!w || !w->openglContext() || QThread::currentThread() != w->openglContext()->thread()) {
         qWarning("QQuickPaintedItem::textureProvider: can only be queried on the rendering thread of an exposed window");
-        return 0;
+        return nullptr;
     }
 #endif
     if (!d->textureProvider)
diff --git a/src/quick/items/qquickpathview.cpp b/src/quick/items/qquickpathview.cpp
index b9fea974ce..be94cdef42 100644
--- a/src/quick/items/qquickpathview.cpp
+++ b/src/quick/items/qquickpathview.cpp
@@ -66,7 +66,7 @@ const qreal MinimumFlickVelocity = 75.0;
 static QQmlOpenMetaObjectType *qPathViewAttachedType = nullptr;
 
 QQuickPathViewAttached::QQuickPathViewAttached(QObject *parent)
-: QObject(parent), m_percent(-1), m_view(0), m_onPath(false), m_isCurrent(false)
+: QObject(parent), m_percent(-1), m_view(nullptr), m_onPath(false), m_isCurrent(false)
 {
     if (qPathViewAttachedType) {
         m_metaobject = new QQmlOpenMetaObject(this, qPathViewAttachedType);
diff --git a/src/quick/items/qquickpincharea.cpp b/src/quick/items/qquickpincharea.cpp
index 9f10705449..7ae0f9b7e3 100644
--- a/src/quick/items/qquickpincharea.cpp
+++ b/src/quick/items/qquickpincharea.cpp
@@ -151,7 +151,7 @@ QT_BEGIN_NAMESPACE
 */
 
 QQuickPinch::QQuickPinch()
-    : m_target(0), m_minScale(1.0), m_maxScale(1.0)
+    : m_target(nullptr), m_minScale(1.0), m_maxScale(1.0)
     , m_minRotation(0.0), m_maxRotation(0.0)
     , m_axis(NoDrag), m_xmin(-FLT_MAX), m_xmax(FLT_MAX)
     , m_ymin(-FLT_MAX), m_ymax(FLT_MAX), m_active(false)
diff --git a/src/quick/items/qquickpincharea_p.h b/src/quick/items/qquickpincharea_p.h
index 2363f1e2d4..8eff53e6dc 100644
--- a/src/quick/items/qquickpincharea_p.h
+++ b/src/quick/items/qquickpincharea_p.h
@@ -84,7 +84,7 @@ public:
     void resetTarget() {
         if (!m_target)
             return;
-        m_target = 0;
+        m_target = nullptr;
         Q_EMIT targetChanged();
     }
 
@@ -270,7 +270,7 @@ class Q_AUTOTEST_EXPORT QQuickPinchArea : public QQuickItem
     Q_PROPERTY(QQuickPinch *pinch READ pinch CONSTANT)
 
 public:
-    QQuickPinchArea(QQuickItem *parent=0);
+    QQuickPinchArea(QQuickItem *parent=nullptr);
     ~QQuickPinchArea();
 
     bool isEnabled() const;
diff --git a/src/quick/items/qquickpositioners.cpp b/src/quick/items/qquickpositioners.cpp
index e752e2538f..493db51666 100644
--- a/src/quick/items/qquickpositioners.cpp
+++ b/src/quick/items/qquickpositioners.cpp
@@ -69,7 +69,7 @@ void QQuickBasePositionerPrivate::unwatchChanges(QQuickItem* other)
 
 QQuickBasePositioner::PositionedItem::PositionedItem(QQuickItem *i)
     : item(i)
-    , transitionableItem(0)
+    , transitionableItem(nullptr)
     , index(-1)
     , isNew(false)
     , isVisible(true)
@@ -203,7 +203,7 @@ void QQuickBasePositioner::setSpacing(qreal s)
 QQuickTransition *QQuickBasePositioner::populate() const
 {
     Q_D(const QQuickBasePositioner);
-    return d->transitioner ? d->transitioner->populateTransition : 0;
+    return d->transitioner ? d->transitioner->populateTransition : nullptr;
 }
 
 void QQuickBasePositioner::setPopulate(QQuickTransition *transition)
@@ -220,7 +220,7 @@ void QQuickBasePositioner::setPopulate(QQuickTransition *transition)
 QQuickTransition *QQuickBasePositioner::move() const
 {
     Q_D(const QQuickBasePositioner);
-    return d->transitioner ? d->transitioner->displacedTransition : 0;
+    return d->transitioner ? d->transitioner->displacedTransition : nullptr;
 }
 
 void QQuickBasePositioner::setMove(QQuickTransition *mt)
@@ -238,7 +238,7 @@ void QQuickBasePositioner::setMove(QQuickTransition *mt)
 QQuickTransition *QQuickBasePositioner::add() const
 {
     Q_D(const QQuickBasePositioner);
-    return d->transitioner ? d->transitioner->addTransition : 0;
+    return d->transitioner ? d->transitioner->addTransition : nullptr;
 }
 
 void QQuickBasePositioner::setAdd(QQuickTransition *add)
@@ -460,15 +460,15 @@ void QQuickBasePositioner::updateAttachedProperties(QQuickPositionerAttached *sp
     // be changed to run only when there are attached properties present. This
     // could be a flag in the positioner that is set by the attached property
     // constructor.
-    QQuickPositionerAttached *prevLastProperty = 0;
-    QQuickPositionerAttached *lastProperty = 0;
+    QQuickPositionerAttached *prevLastProperty = nullptr;
+    QQuickPositionerAttached *lastProperty = nullptr;
 
     for (int ii = 0; ii < positionedItems.count(); ++ii) {
         const PositionedItem &child = positionedItems.at(ii);
         if (!child.item)
             continue;
 
-        QQuickPositionerAttached *property = 0;
+        QQuickPositionerAttached *property = nullptr;
 
         if (specificProperty) {
             if (specificPropertyOwner == child.item) {
@@ -503,7 +503,7 @@ void QQuickBasePositioner::updateAttachedProperties(QQuickPositionerAttached *sp
         if (!child.item)
             continue;
 
-        QQuickPositionerAttached *property = 0;
+        QQuickPositionerAttached *property = nullptr;
 
         if (specificProperty) {
             if (specificPropertyOwner == child.item) {
diff --git a/src/quick/items/qquickpositioners_p.h b/src/quick/items/qquickpositioners_p.h
index ce583aefe8..94a737e1f1 100644
--- a/src/quick/items/qquickpositioners_p.h
+++ b/src/quick/items/qquickpositioners_p.h
@@ -132,7 +132,7 @@ public:
 
     static QQuickPositionerAttached *qmlAttachedProperties(QObject *obj);
 
-    void updateAttachedProperties(QQuickPositionerAttached *specificProperty = 0, QQuickItem *specificPropertyOwner = 0) const;
+    void updateAttachedProperties(QQuickPositionerAttached *specificProperty = nullptr, QQuickItem *specificPropertyOwner = nullptr) const;
 
     qreal padding() const;
     void setPadding(qreal padding);
@@ -231,7 +231,7 @@ class Q_AUTOTEST_EXPORT QQuickColumn : public QQuickBasePositioner
 {
     Q_OBJECT
 public:
-    QQuickColumn(QQuickItem *parent=0);
+    QQuickColumn(QQuickItem *parent=nullptr);
 
 protected:
     void doPositioning(QSizeF *contentSize) override;
@@ -247,7 +247,7 @@ class Q_AUTOTEST_EXPORT QQuickRow: public QQuickBasePositioner
     Q_PROPERTY(Qt::LayoutDirection layoutDirection READ layoutDirection WRITE setLayoutDirection NOTIFY layoutDirectionChanged)
     Q_PROPERTY(Qt::LayoutDirection effectiveLayoutDirection READ effectiveLayoutDirection NOTIFY effectiveLayoutDirectionChanged)
 public:
-    QQuickRow(QQuickItem *parent=0);
+    QQuickRow(QQuickItem *parent=nullptr);
 
     Qt::LayoutDirection layoutDirection() const;
     void setLayoutDirection (Qt::LayoutDirection);
@@ -281,7 +281,7 @@ class Q_AUTOTEST_EXPORT QQuickGrid : public QQuickBasePositioner
     Q_PROPERTY(VAlignment verticalItemAlignment READ vItemAlign WRITE setVItemAlign NOTIFY verticalAlignmentChanged REVISION 1)
 
 public:
-    QQuickGrid(QQuickItem *parent=0);
+    QQuickGrid(QQuickItem *parent=nullptr);
 
     int rows() const { return m_rows; }
     void setRows(const int rows);
@@ -360,7 +360,7 @@ class Q_AUTOTEST_EXPORT QQuickFlow: public QQuickBasePositioner
     Q_PROPERTY(Qt::LayoutDirection layoutDirection READ layoutDirection WRITE setLayoutDirection NOTIFY layoutDirectionChanged)
     Q_PROPERTY(Qt::LayoutDirection effectiveLayoutDirection READ effectiveLayoutDirection NOTIFY effectiveLayoutDirectionChanged)
 public:
-    QQuickFlow(QQuickItem *parent=0);
+    QQuickFlow(QQuickItem *parent=nullptr);
 
     enum Flow { LeftToRight, TopToBottom };
     Q_ENUM(Flow)
diff --git a/src/quick/items/qquickrectangle.cpp b/src/quick/items/qquickrectangle.cpp
index 9308553a79..3895f59ae1 100644
--- a/src/quick/items/qquickrectangle.cpp
+++ b/src/quick/items/qquickrectangle.cpp
@@ -414,7 +414,7 @@ void QQuickRectangle::setGradient(QQuickGradient *gradient)
 
 void QQuickRectangle::resetGradient()
 {
-    setGradient(0);
+    setGradient(nullptr);
 }
 
 /*!
@@ -489,7 +489,7 @@ QSGNode *QQuickRectangle::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData
     if (width() <= 0 || height() <= 0
             || (d->color.alpha() == 0 && (!d->pen || d->pen->width() == 0 || d->pen->color().alpha() == 0))) {
         delete oldNode;
-        return 0;
+        return nullptr;
     }
 
     QSGInternalRectangleNode *rectangle = static_cast<QSGInternalRectangleNode *>(oldNode);
diff --git a/src/quick/items/qquickrectangle_p.h b/src/quick/items/qquickrectangle_p.h
index 52f0bc975b..636f8c5db6 100644
--- a/src/quick/items/qquickrectangle_p.h
+++ b/src/quick/items/qquickrectangle_p.h
@@ -67,7 +67,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPen : public QObject
     Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY penChanged)
     Q_PROPERTY(bool pixelAligned READ pixelAligned WRITE setPixelAligned NOTIFY penChanged)
 public:
-    QQuickPen(QObject *parent=0);
+    QQuickPen(QObject *parent=nullptr);
 
     qreal width() const;
     void setWidth(qreal w);
@@ -98,7 +98,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickGradientStop : public QObject
     Q_PROPERTY(QColor color READ color WRITE setColor)
 
 public:
-    QQuickGradientStop(QObject *parent=0);
+    QQuickGradientStop(QObject *parent=nullptr);
 
     qreal position() const;
     void setPosition(qreal position);
@@ -122,7 +122,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickGradient : public QObject
     Q_CLASSINFO("DefaultProperty", "stops")
 
 public:
-    QQuickGradient(QObject *parent=0);
+    QQuickGradient(QObject *parent=nullptr);
     ~QQuickGradient();
 
     QQmlListProperty<QQuickGradientStop> stops();
@@ -151,7 +151,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickRectangle : public QQuickItem
     Q_PROPERTY(QQuickPen * border READ border CONSTANT)
     Q_PROPERTY(qreal radius READ radius WRITE setRadius NOTIFY radiusChanged)
 public:
-    QQuickRectangle(QQuickItem *parent=0);
+    QQuickRectangle(QQuickItem *parent=nullptr);
 
     QColor color() const;
     void setColor(const QColor &);
diff --git a/src/quick/items/qquickrendercontrol.cpp b/src/quick/items/qquickrendercontrol.cpp
index 58b76fa862..49568db552 100644
--- a/src/quick/items/qquickrendercontrol.cpp
+++ b/src/quick/items/qquickrendercontrol.cpp
@@ -133,11 +133,11 @@ extern Q_GUI_EXPORT QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_
   \inmodule QtQuick
 */
 
-QSGContext *QQuickRenderControlPrivate::sg = 0;
+QSGContext *QQuickRenderControlPrivate::sg = nullptr;
 
 QQuickRenderControlPrivate::QQuickRenderControlPrivate()
     : initialized(0),
-      window(0)
+      window(nullptr)
 {
     if (!sg) {
         qAddPostRoutine(cleanup);
@@ -149,7 +149,7 @@ QQuickRenderControlPrivate::QQuickRenderControlPrivate()
 void QQuickRenderControlPrivate::cleanup()
 {
     delete sg;
-    sg = 0;
+    sg = nullptr;
 }
 
 /*!
@@ -173,7 +173,7 @@ QQuickRenderControl::~QQuickRenderControl()
     invalidate();
 
     if (d->window)
-        QQuickWindowPrivate::get(d->window)->renderControl = 0;
+        QQuickWindowPrivate::get(d->window)->renderControl = nullptr;
 
     // It is likely that the cleanup in windowDestroyed() is not called since
     // the standard pattern is to destroy the rendercontrol before the QQuickWindow.
@@ -187,16 +187,16 @@ void QQuickRenderControlPrivate::windowDestroyed()
 {
     if (window) {
         rc->invalidate();
-        QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
+        QCoreApplication::sendPostedEvents(nullptr, QEvent::DeferredDelete);
 
         delete QQuickWindowPrivate::get(window)->animationController;
-        QQuickWindowPrivate::get(window)->animationController = 0;
+        QQuickWindowPrivate::get(window)->animationController = nullptr;
 
 #if QT_CONFIG(quick_shadereffect) && QT_CONFIG(opengl)
         QQuickOpenGLShaderEffectMaterial::cleanupMaterialCache();
 #endif
 
-        window = 0;
+        window = nullptr;
     }
 }
 
@@ -452,11 +452,11 @@ void QQuickRenderControlPrivate::maybeUpdate()
 QWindow *QQuickRenderControl::renderWindowFor(QQuickWindow *win, QPoint *offset)
 {
     if (!win)
-        return 0;
+        return nullptr;
     QQuickRenderControl *rc = QQuickWindowPrivate::get(win)->renderControl;
     if (rc)
         return rc->renderWindow(offset);
-    return 0;
+    return nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/quick/items/qquickrepeater.cpp b/src/quick/items/qquickrepeater.cpp
index ba9460bf76..b95fa3c410 100644
--- a/src/quick/items/qquickrepeater.cpp
+++ b/src/quick/items/qquickrepeater.cpp
@@ -50,7 +50,7 @@
 QT_BEGIN_NAMESPACE
 
 QQuickRepeaterPrivate::QQuickRepeaterPrivate()
-    : model(0)
+    : model(nullptr)
     , ownModel(false)
     , dataSourceIsObject(false)
     , delegateValidated(false)
@@ -216,8 +216,8 @@ void QQuickRepeater::setModel(const QVariant &m)
     d->dataSource = model;
     QObject *object = qvariant_cast<QObject*>(model);
     d->dataSourceAsObject = object;
-    d->dataSourceIsObject = object != 0;
-    QQmlInstanceModel *vim = 0;
+    d->dataSourceIsObject = object != nullptr;
+    QQmlInstanceModel *vim = nullptr;
     if (object && (vim = qobject_cast<QQmlInstanceModel *>(object))) {
         if (d->ownModel) {
             delete d->model;
@@ -288,7 +288,7 @@ QQmlComponent *QQuickRepeater::delegate() const
             return dataModel->delegate();
     }
 
-    return 0;
+    return nullptr;
 }
 
 void QQuickRepeater::setDelegate(QQmlComponent *delegate)
@@ -339,7 +339,7 @@ QQuickItem *QQuickRepeater::itemAt(int index) const
     Q_D(const QQuickRepeater);
     if (index >= 0 && index < d->deletables.count())
         return d->deletables[index];
-    return 0;
+    return nullptr;
 }
 
 void QQuickRepeater::componentComplete()
@@ -378,7 +378,7 @@ void QQuickRepeater::clear()
         }
         for (QQuickItem *item : qAsConst(d->deletables)) {
             if (item)
-                item->setParentItem(0);
+                item->setParentItem(nullptr);
         }
     }
     d->deletables.clear();
@@ -482,7 +482,7 @@ void QQuickRepeater::modelUpdated(const QQmlChangeSet &changeSet, bool reset)
             emit itemRemoved(index, item);
             if (item) {
                 d->model->release(item);
-                item->setParentItem(0);
+                item->setParentItem(nullptr);
             }
             --d->itemCount;
         }
@@ -510,7 +510,7 @@ void QQuickRepeater::modelUpdated(const QQmlChangeSet &changeSet, bool reset)
         } else for (int i = 0; i < insert.count; ++i) {
             int modelIndex = index + i;
             ++d->itemCount;
-            d->deletables.insert(modelIndex, 0);
+            d->deletables.insert(modelIndex, nullptr);
             QObject *object = d->model->object(modelIndex, QQmlIncubator::AsynchronousIfNested);
             if (object)
                 d->model->release(object);
diff --git a/src/quick/items/qquickrepeater_p.h b/src/quick/items/qquickrepeater_p.h
index 39e29937f9..dbe3cd0c55 100644
--- a/src/quick/items/qquickrepeater_p.h
+++ b/src/quick/items/qquickrepeater_p.h
@@ -72,7 +72,7 @@ class Q_AUTOTEST_EXPORT QQuickRepeater : public QQuickItem
     Q_CLASSINFO("DefaultProperty", "delegate")
 
 public:
-    QQuickRepeater(QQuickItem *parent=0);
+    QQuickRepeater(QQuickItem *parent=nullptr);
     virtual ~QQuickRepeater();
 
     QVariant model() const;
diff --git a/src/quick/items/qquickscalegrid_p_p.h b/src/quick/items/qquickscalegrid_p_p.h
index 7f6a31a7bd..5752f61e3f 100644
--- a/src/quick/items/qquickscalegrid_p_p.h
+++ b/src/quick/items/qquickscalegrid_p_p.h
@@ -71,7 +71,7 @@ class Q_AUTOTEST_EXPORT QQuickScaleGrid : public QObject
     Q_PROPERTY(int bottom READ bottom WRITE setBottom NOTIFY borderChanged)
 
 public:
-    QQuickScaleGrid(QObject *parent=0);
+    QQuickScaleGrid(QObject *parent=nullptr);
     ~QQuickScaleGrid();
 
     bool isNull() const;
diff --git a/src/quick/items/qquickscreen.cpp b/src/quick/items/qquickscreen.cpp
index 6a3eab957e..aea7e44a65 100644
--- a/src/quick/items/qquickscreen.cpp
+++ b/src/quick/items/qquickscreen.cpp
@@ -423,8 +423,8 @@ QScreen *QQuickScreenInfo::wrappedScreen() const
 
 QQuickScreenAttached::QQuickScreenAttached(QObject* attachee)
     : QQuickScreenInfo(attachee)
-    , m_window(NULL)
-    , m_updateMask(0)
+    , m_window(nullptr)
+    , m_updateMask(nullptr)
     , m_updateMaskSet(false)
 {
     m_attachee = qobject_cast<QQuickItem*>(attachee);
@@ -475,7 +475,7 @@ void QQuickScreenAttached::windowChanged(QQuickWindow* c)
     if (m_window)
         disconnect(m_window, SIGNAL(screenChanged(QScreen*)), this, SLOT(screenChanged(QScreen*)));
     m_window = c;
-    screenChanged(c ? c->screen() : NULL);
+    screenChanged(c ? c->screen() : nullptr);
     if (c)
         connect(c, SIGNAL(screenChanged(QScreen*)), this, SLOT(screenChanged(QScreen*)));
 }
diff --git a/src/quick/items/qquickshadereffect_p.h b/src/quick/items/qquickshadereffect_p.h
index 30bd018098..cabad930fc 100644
--- a/src/quick/items/qquickshadereffect_p.h
+++ b/src/quick/items/qquickshadereffect_p.h
@@ -91,7 +91,7 @@ public:
     };
     Q_ENUM(Status)
 
-    QQuickShaderEffect(QQuickItem *parent = 0);
+    QQuickShaderEffect(QQuickItem *parent = nullptr);
 
     QByteArray fragmentShader() const;
     void setFragmentShader(const QByteArray &code);
diff --git a/src/quick/items/qquickshadereffectmesh_p.h b/src/quick/items/qquickshadereffectmesh_p.h
index f3ac956f60..5d6641429a 100644
--- a/src/quick/items/qquickshadereffectmesh_p.h
+++ b/src/quick/items/qquickshadereffectmesh_p.h
@@ -76,7 +76,7 @@ class QQuickShaderEffectMesh : public QObject
 {
     Q_OBJECT
 public:
-    QQuickShaderEffectMesh(QObject *parent = 0);
+    QQuickShaderEffectMesh(QObject *parent = nullptr);
     virtual bool validateAttributes(const QVector<QByteArray> &attributes, int *posIndex) = 0;
     // If 'geometry' != 0, 'attrCount' is the same as last time the function was called.
     virtual QSGGeometry *updateGeometry(QSGGeometry *geometry, int attrCount, int posIndex,
@@ -94,7 +94,7 @@ class QQuickGridMesh : public QQuickShaderEffectMesh
     Q_OBJECT
     Q_PROPERTY(QSize resolution READ resolution WRITE setResolution NOTIFY resolutionChanged)
 public:
-    QQuickGridMesh(QObject *parent = 0);
+    QQuickGridMesh(QObject *parent = nullptr);
     bool validateAttributes(const QVector<QByteArray> &attributes, int *posIndex) override;
     QSGGeometry *updateGeometry(QSGGeometry *geometry, int attrCount, int posIndex,
                                 const QRectF &srcRect, const QRectF &rect) override;
@@ -121,7 +121,7 @@ class QQuickBorderImageMesh : public QQuickShaderEffectMesh
     Q_PROPERTY(TileMode horizontalTileMode READ horizontalTileMode WRITE setHorizontalTileMode NOTIFY horizontalTileModeChanged)
     Q_PROPERTY(TileMode verticalTileMode READ verticalTileMode WRITE setVerticalTileMode NOTIFY verticalTileModeChanged)
 public:
-    QQuickBorderImageMesh(QObject *parent = 0);
+    QQuickBorderImageMesh(QObject *parent = nullptr);
 
     bool validateAttributes(const QVector<QByteArray> &attributes, int *posIndex) override;
     QSGGeometry *updateGeometry(QSGGeometry *geometry, int attrCount, int posIndex,
diff --git a/src/quick/items/qquickshadereffectsource.cpp b/src/quick/items/qquickshadereffectsource.cpp
index b4a45431c5..4782672858 100644
--- a/src/quick/items/qquickshadereffectsource.cpp
+++ b/src/quick/items/qquickshadereffectsource.cpp
@@ -56,7 +56,7 @@ class QQuickShaderEffectSourceTextureProvider : public QSGTextureProvider
     Q_OBJECT
 public:
     QQuickShaderEffectSourceTextureProvider()
-        : sourceTexture(0)
+        : sourceTexture(nullptr)
         , mipmapFiltering(QSGTexture::None)
         , filtering(QSGTexture::Nearest)
         , horizontalWrap(QSGTexture::ClampToEdge)
@@ -183,10 +183,10 @@ public:
 
 QQuickShaderEffectSource::QQuickShaderEffectSource(QQuickItem *parent)
     : QQuickItem(parent)
-    , m_provider(0)
-    , m_texture(0)
+    , m_provider(nullptr)
+    , m_texture(nullptr)
     , m_wrapMode(ClampToEdge)
-    , m_sourceItem(0)
+    , m_sourceItem(nullptr)
     , m_textureSize(0, 0)
     , m_format(RGBA)
     , m_samples(0)
@@ -246,7 +246,7 @@ QSGTextureProvider *QQuickShaderEffectSource::textureProvider() const
     const QQuickItemPrivate *d = QQuickItemPrivate::get(this);
     if (!d->window || !d->sceneGraphRenderContext() || QThread::currentThread() != d->sceneGraphRenderContext()->thread()) {
         qWarning("QQuickShaderEffectSource::textureProvider: can only be queried on the rendering thread of an exposed window");
-        return 0;
+        return nullptr;
     }
 
     if (!m_provider) {
@@ -334,8 +334,8 @@ void QQuickShaderEffectSource::setSourceItem(QQuickItem *item)
 
     if (m_sourceItem) {
         if (window() == m_sourceItem->window()
-                || (window() == 0 && m_sourceItem->window())
-                || (m_sourceItem->window() == 0 && window())) {
+                || (window() == nullptr && m_sourceItem->window())
+                || (m_sourceItem->window() == nullptr && window())) {
             QQuickItemPrivate *d = QQuickItemPrivate::get(item);
             // 'item' needs a window to get a scene graph node. It usually gets one through its
             // parent, but if the source item is "inline" rather than a reference -- i.e.
@@ -350,7 +350,7 @@ void QQuickShaderEffectSource::setSourceItem(QQuickItem *item)
             connect(m_sourceItem, SIGNAL(destroyed(QObject*)), this, SLOT(sourceItemDestroyed(QObject*)));
         } else {
             qWarning("ShaderEffectSource: sourceItem and ShaderEffectSource must both be children of the same window.");
-            m_sourceItem = 0;
+            m_sourceItem = nullptr;
         }
     }
     update();
@@ -361,7 +361,7 @@ void QQuickShaderEffectSource::sourceItemDestroyed(QObject *item)
 {
     Q_ASSERT(item == m_sourceItem);
     Q_UNUSED(item);
-    m_sourceItem = 0;
+    m_sourceItem = nullptr;
     update();
     emit sourceItemChanged();
 }
@@ -662,8 +662,8 @@ void QQuickShaderEffectSource::releaseResources()
     if (m_texture || m_provider) {
         window()->scheduleRenderJob(new QQuickShaderEffectSourceCleanup(m_texture, m_provider),
                                     QQuickWindow::AfterSynchronizingStage);
-        m_texture = 0;
-        m_provider = 0;
+        m_texture = nullptr;
+        m_provider = nullptr;
     }
 }
 
@@ -684,9 +684,9 @@ QSGNode *QQuickShaderEffectSource::updatePaintNode(QSGNode *oldNode, UpdatePaint
 {
     if (!m_sourceItem || m_sourceItem->width() <= 0 || m_sourceItem->height() <= 0) {
         if (m_texture)
-            m_texture->setItem(0);
+            m_texture->setItem(nullptr);
         delete oldNode;
-        return 0;
+        return nullptr;
     }
 
     ensureTexture();
@@ -745,7 +745,7 @@ QSGNode *QQuickShaderEffectSource::updatePaintNode(QSGNode *oldNode, UpdatePaint
     // Don't create the paint node if we're not spanning any area
     if (width() <= 0 || height() <= 0) {
         delete oldNode;
-        return 0;
+        return nullptr;
     }
 
     QSGInternalImageNode *node = static_cast<QSGInternalImageNode *>(oldNode);
@@ -779,8 +779,8 @@ void QQuickShaderEffectSource::invalidateSceneGraph()
         delete m_texture;
     if (m_provider)
         delete m_provider;
-    m_texture = 0;
-    m_provider = 0;
+    m_texture = nullptr;
+    m_provider = nullptr;
 }
 
 void QQuickShaderEffectSource::itemChange(ItemChange change, const ItemChangeData &value)
diff --git a/src/quick/items/qquickshadereffectsource_p.h b/src/quick/items/qquickshadereffectsource_p.h
index 185c5179b6..f70550f284 100644
--- a/src/quick/items/qquickshadereffectsource_p.h
+++ b/src/quick/items/qquickshadereffectsource_p.h
@@ -113,7 +113,7 @@ public:
     };
     Q_ENUM(TextureMirroring)
 
-    QQuickShaderEffectSource(QQuickItem *parent = 0);
+    QQuickShaderEffectSource(QQuickItem *parent = nullptr);
     ~QQuickShaderEffectSource();
 
     WrapMode wrapMode() const;
diff --git a/src/quick/items/qquicksprite_p.h b/src/quick/items/qquicksprite_p.h
index 2f7f6da5c0..19cbc416ca 100644
--- a/src/quick/items/qquicksprite_p.h
+++ b/src/quick/items/qquicksprite_p.h
@@ -88,7 +88,7 @@ class Q_QUICK_EXPORT QQuickSprite : public QQuickStochasticState
     Q_PROPERTY(int frameDurationVariation READ frameDurationVariation WRITE setFrameDurationVariation NOTIFY frameDurationVariationChanged)
 
 public:
-    explicit QQuickSprite(QObject *parent = 0);
+    explicit QQuickSprite(QObject *parent = nullptr);
     ~QQuickSprite();
 
     QUrl source() const
diff --git a/src/quick/items/qquickspriteengine_p.h b/src/quick/items/qquickspriteengine_p.h
index ff02135799..416e6611b5 100644
--- a/src/quick/items/qquickspriteengine_p.h
+++ b/src/quick/items/qquickspriteengine_p.h
@@ -81,7 +81,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickStochasticState : public QObject //Currently
     Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
 
 public:
-    QQuickStochasticState(QObject* parent = 0)
+    QQuickStochasticState(QObject* parent = nullptr)
         : QObject(parent)
         , m_duration(-1)
         , m_durationVariation(0)
@@ -193,8 +193,8 @@ class Q_QUICK_PRIVATE_EXPORT QQuickStochasticEngine : public QObject
     Q_PROPERTY(QString globalGoal READ globalGoal WRITE setGlobalGoal NOTIFY globalGoalChanged)
     Q_PROPERTY(QQmlListProperty<QQuickStochasticState> states READ states)
 public:
-    explicit QQuickStochasticEngine(QObject *parent = 0);
-    QQuickStochasticEngine(const QList<QQuickStochasticState*> &states, QObject *parent = 0);
+    explicit QQuickStochasticEngine(QObject *parent = nullptr);
+    QQuickStochasticEngine(const QList<QQuickStochasticState*> &states, QObject *parent = nullptr);
     ~QQuickStochasticEngine();
 
     QQmlListProperty<QQuickStochasticState> states()
@@ -270,8 +270,8 @@ class Q_QUICK_PRIVATE_EXPORT QQuickSpriteEngine : public QQuickStochasticEngine
     Q_OBJECT
     Q_PROPERTY(QQmlListProperty<QQuickSprite> sprites READ sprites)
 public:
-    explicit QQuickSpriteEngine(QObject *parent = 0);
-    QQuickSpriteEngine(const QList<QQuickSprite*> &sprites, QObject *parent = 0);
+    explicit QQuickSpriteEngine(QObject *parent = nullptr);
+    QQuickSpriteEngine(const QList<QQuickSprite*> &sprites, QObject *parent = nullptr);
     ~QQuickSpriteEngine();
     QQmlListProperty<QQuickSprite> sprites()
     {
@@ -303,7 +303,7 @@ public:
     QImage assembledImage(int maxSize = 2048);
 
 private:
-    int pseudospriteProgress(int, int, int *rd = 0) const;
+    int pseudospriteProgress(int, int, int *rd = nullptr) const;
     QList<QQuickSprite*> m_sprites;
     bool m_startedImageAssembly;
     bool m_loaded;
diff --git a/src/quick/items/qquickspritesequence.cpp b/src/quick/items/qquickspritesequence.cpp
index ae466aa482..0a39c09ebc 100644
--- a/src/quick/items/qquickspritesequence.cpp
+++ b/src/quick/items/qquickspritesequence.cpp
@@ -199,7 +199,7 @@ void QQuickSpriteSequence::createEngine()
         if (!d->m_goalState.isEmpty())
             d->m_spriteEngine->setGoal(d->m_spriteEngine->stateIndex(d->m_goalState));
     } else {
-        d->m_spriteEngine = 0;
+        d->m_spriteEngine = nullptr;
     }
     reset();
 }
diff --git a/src/quick/items/qquickspritesequence_p.h b/src/quick/items/qquickspritesequence_p.h
index ffcefecaec..899ce79e0e 100644
--- a/src/quick/items/qquickspritesequence_p.h
+++ b/src/quick/items/qquickspritesequence_p.h
@@ -77,7 +77,7 @@ class Q_AUTOTEST_EXPORT QQuickSpriteSequence : public QQuickItem
     Q_CLASSINFO("DefaultProperty", "sprites")
 
 public:
-    explicit QQuickSpriteSequence(QQuickItem *parent = 0);
+    explicit QQuickSpriteSequence(QQuickItem *parent = nullptr);
 
     QQmlListProperty<QQuickSprite> sprites();
 
diff --git a/src/quick/items/qquickstateoperations.cpp b/src/quick/items/qquickstateoperations.cpp
index 386bb058b5..a85b9663d3 100644
--- a/src/quick/items/qquickstateoperations.cpp
+++ b/src/quick/items/qquickstateoperations.cpp
@@ -51,8 +51,8 @@ class QQuickParentChangePrivate : public QQuickStateOperationPrivate
 {
     Q_DECLARE_PUBLIC(QQuickParentChange)
 public:
-    QQuickParentChangePrivate() : target(0), parent(0), origParent(0), origStackBefore(0),
-        rewindParent(0), rewindStackBefore(0) {}
+    QQuickParentChangePrivate() : target(nullptr), parent(nullptr), origParent(nullptr), origStackBefore(nullptr),
+        rewindParent(nullptr), rewindStackBefore(nullptr) {}
 
     QQuickItem *target;
     QPointer<QQuickItem> parent;
@@ -68,7 +68,7 @@ public:
     QQmlNullableValue<QQmlScriptString> scaleString;
     QQmlNullableValue<QQmlScriptString> rotationString;
 
-    void doChange(QQuickItem *targetParent, QQuickItem *stackBefore = 0);
+    void doChange(QQuickItem *targetParent, QQuickItem *stackBefore = nullptr);
 };
 
 void QQuickParentChangePrivate::doChange(QQuickItem *targetParent, QQuickItem *stackBefore)
@@ -524,13 +524,13 @@ void QQuickParentChange::saveCurrentValues()
 {
     Q_D(QQuickParentChange);
     if (!d->target) {
-        d->rewindParent = 0;
-        d->rewindStackBefore = 0;
+        d->rewindParent = nullptr;
+        d->rewindStackBefore = nullptr;
         return;
     }
 
     d->rewindParent = d->target->parentItem();
-    d->rewindStackBefore = 0;
+    d->rewindStackBefore = nullptr;
 
     if (!d->rewindParent)
         return;
@@ -588,7 +588,7 @@ class QQuickAnchorSetPrivate : public QObjectPrivate
     Q_DECLARE_PUBLIC(QQuickAnchorSet)
 public:
     QQuickAnchorSetPrivate()
-      : usedAnchors(0), resetAnchors(0)
+      : usedAnchors(nullptr), resetAnchors(nullptr)
     {
     }
 
@@ -771,7 +771,7 @@ class QQuickAnchorChangesPrivate : public QQuickStateOperationPrivate
 {
 public:
     QQuickAnchorChangesPrivate()
-        : target(0), anchorSet(new QQuickAnchorSet)
+        : target(nullptr), anchorSet(new QQuickAnchorSet)
     {
 
     }
@@ -855,7 +855,7 @@ QQuickAnchorChanges::ActionList QQuickAnchorChanges::actions()
     Q_D(QQuickAnchorChanges);
     //### ASSERT these are all 0?
     d->leftBinding = d->rightBinding = d->hCenterBinding = d->topBinding
-                   = d->bottomBinding = d->vCenterBinding = d->baselineBinding = 0;
+                   = d->bottomBinding = d->vCenterBinding = d->baselineBinding = nullptr;
 
     d->leftProp = QQmlProperty(d->target, QLatin1String("anchors.left"));
     d->rightProp = QQmlProperty(d->target, QLatin1String("anchors.right"));
@@ -1236,20 +1236,20 @@ void QQuickAnchorChanges::copyOriginals(QQuickStateActionEvent *other)
 
     //clear old values from other
     //### could this be generalized for all QQuickStateActionEvents, and called after copyOriginals?
-    acp->leftBinding = 0;
-    acp->rightBinding = 0;
-    acp->hCenterBinding = 0;
-    acp->topBinding = 0;
-    acp->bottomBinding = 0;
-    acp->vCenterBinding = 0;
-    acp->baselineBinding = 0;
-    acp->origLeftBinding = 0;
-    acp->origRightBinding = 0;
-    acp->origHCenterBinding = 0;
-    acp->origTopBinding = 0;
-    acp->origBottomBinding = 0;
-    acp->origVCenterBinding = 0;
-    acp->origBaselineBinding = 0;
+    acp->leftBinding = nullptr;
+    acp->rightBinding = nullptr;
+    acp->hCenterBinding = nullptr;
+    acp->topBinding = nullptr;
+    acp->bottomBinding = nullptr;
+    acp->vCenterBinding = nullptr;
+    acp->baselineBinding = nullptr;
+    acp->origLeftBinding = nullptr;
+    acp->origRightBinding = nullptr;
+    acp->origHCenterBinding = nullptr;
+    acp->origTopBinding = nullptr;
+    acp->origBottomBinding = nullptr;
+    acp->origVCenterBinding = nullptr;
+    acp->origBaselineBinding = nullptr;
 
     saveCurrentValues();
 }
diff --git a/src/quick/items/qquickstateoperations_p.h b/src/quick/items/qquickstateoperations_p.h
index d61ed294cb..e947b2213f 100644
--- a/src/quick/items/qquickstateoperations_p.h
+++ b/src/quick/items/qquickstateoperations_p.h
@@ -75,7 +75,7 @@ class Q_AUTOTEST_EXPORT QQuickParentChange : public QQuickStateOperation, public
     Q_PROPERTY(QQmlScriptString scale READ scale WRITE setScale)
     Q_PROPERTY(QQmlScriptString rotation READ rotation WRITE setRotation)
 public:
-    QQuickParentChange(QObject *parent=0);
+    QQuickParentChange(QObject *parent=nullptr);
     ~QQuickParentChange();
 
     QQuickItem *object() const;
@@ -138,7 +138,7 @@ class Q_AUTOTEST_EXPORT QQuickAnchorSet : public QObject
     Q_PROPERTY(QQmlScriptString baseline READ baseline WRITE setBaseline RESET resetBaseline)
 
 public:
-    QQuickAnchorSet(QObject *parent=0);
+    QQuickAnchorSet(QObject *parent=nullptr);
     virtual ~QQuickAnchorSet();
 
     QQmlScriptString left() const;
@@ -187,7 +187,7 @@ class Q_AUTOTEST_EXPORT QQuickAnchorChanges : public QQuickStateOperation, publi
     Q_PROPERTY(QQuickAnchorSet *anchors READ anchors CONSTANT)
 
 public:
-    QQuickAnchorChanges(QObject *parent=0);
+    QQuickAnchorChanges(QObject *parent=nullptr);
     ~QQuickAnchorChanges();
 
     ActionList actions() override;
diff --git a/src/quick/items/qquicktext.cpp b/src/quick/items/qquicktext.cpp
index d601087296..383aa2b821 100644
--- a/src/quick/items/qquicktext.cpp
+++ b/src/quick/items/qquicktext.cpp
@@ -74,7 +74,7 @@ Q_DECLARE_LOGGING_CATEGORY(DBG_HOVER_TRACE)
 const QChar QQuickTextPrivate::elideChar = QChar(0x2026);
 
 QQuickTextPrivate::QQuickTextPrivate()
-    : fontInfo(font), elideLayout(0), textLine(0), lineWidth(0)
+    : fontInfo(font), elideLayout(nullptr), textLine(nullptr), lineWidth(0)
     , color(0xFF000000), linkColor(0xFF0000FF), styleColor(0xFF000000)
     , lineCount(1), multilengthEos(-1)
     , elideMode(QQuickText::ElideNone), hAlign(QQuickText::AlignLeft), vAlign(QQuickText::AlignTop)
@@ -103,7 +103,7 @@ QQuickTextPrivate::ExtraData::ExtraData()
     , explicitRightPadding(false)
     , explicitBottomPadding(false)
     , lineHeight(1.0)
-    , doc(0)
+    , doc(nullptr)
     , minimumPixelSize(12)
     , minimumPointSize(12)
     , nbActiveDownloads(0)
@@ -124,7 +124,7 @@ void QQuickTextPrivate::init()
 QQuickTextPrivate::~QQuickTextPrivate()
 {
     delete elideLayout;
-    delete textLine; textLine = 0;
+    delete textLine; textLine = nullptr;
 
     if (extra.isAllocated()) {
         qDeleteAll(extra->imgTags);
@@ -478,7 +478,7 @@ void QQuickTextPrivate::updateSize()
 }
 
 QQuickTextLine::QQuickTextLine()
-    : QObject(), m_line(0), m_height(0), m_lineOffset(0)
+    : QObject(), m_line(nullptr), m_height(0), m_lineOffset(0)
 {
 }
 
@@ -1110,7 +1110,7 @@ QRectF QQuickTextPrivate::setupTextLayout(qreal *const baseline)
             layout.clearLayout();
     } else {
         delete elideLayout;
-        elideLayout = 0;
+        elideLayout = nullptr;
     }
 
     QTextLine firstLine = visibleCount == 1 && elideLayout
@@ -2363,10 +2363,10 @@ QSGNode *QQuickText::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *data
 
     if (d->text.isEmpty()) {
         delete oldNode;
-        return 0;
+        return nullptr;
     }
 
-    if (d->updateType != QQuickTextPrivate::UpdatePaintNode && oldNode != 0) {
+    if (d->updateType != QQuickTextPrivate::UpdatePaintNode && oldNode != nullptr) {
         // Update done in preprocess() in the nodes
         d->updateType = QQuickTextPrivate::UpdateNone;
         return oldNode;
@@ -2376,7 +2376,7 @@ QSGNode *QQuickText::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *data
 
     const qreal dy = QQuickTextUtil::alignedY(d->layedOutTextRect.height() + d->lineHeightOffset(), d->availableHeight(), d->vAlign) + topPadding();
 
-    QQuickTextNode *node = 0;
+    QQuickTextNode *node = nullptr;
     if (!oldNode)
         node = new QQuickTextNode(this);
     else
@@ -2918,14 +2918,14 @@ void QQuickText::invalidateFontCaches()
 {
     Q_D(QQuickText);
 
-    if (d->richText && d->extra.isAllocated() && d->extra->doc != 0) {
+    if (d->richText && d->extra.isAllocated() && d->extra->doc != nullptr) {
         QTextBlock block;
         for (block = d->extra->doc->firstBlock(); block.isValid(); block = block.next()) {
-            if (block.layout() != 0 && block.layout()->engine() != 0)
+            if (block.layout() != nullptr && block.layout()->engine() != nullptr)
                 block.layout()->engine()->resetFontEngineCache();
         }
     } else {
-        if (d->layout.engine() != 0)
+        if (d->layout.engine() != nullptr)
             d->layout.engine()->resetFontEngineCache();
     }
 }
diff --git a/src/quick/items/qquicktext_p.h b/src/quick/items/qquicktext_p.h
index 6c48dd86a9..039ede2bad 100644
--- a/src/quick/items/qquicktext_p.h
+++ b/src/quick/items/qquicktext_p.h
@@ -102,7 +102,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickText : public QQuickImplicitSizeItem
     Q_PROPERTY(QSizeF advance READ advance NOTIFY contentSizeChanged REVISION 10)
 
 public:
-    QQuickText(QQuickItem *parent=0);
+    QQuickText(QQuickItem *parent=nullptr);
     ~QQuickText();
 
     enum HAlignment { AlignLeft = Qt::AlignLeft,
@@ -289,7 +289,7 @@ Q_SIGNALS:
     Q_REVISION(9) void fontInfoChanged();
 
 protected:
-    QQuickText(QQuickTextPrivate &dd, QQuickItem *parent = 0);
+    QQuickText(QQuickTextPrivate &dd, QQuickItem *parent = nullptr);
 
     void mousePressEvent(QMouseEvent *event) override;
     void mouseReleaseEvent(QMouseEvent *event) override;
diff --git a/src/quick/items/qquicktext_p_p.h b/src/quick/items/qquicktext_p_p.h
index 6fd0876a5f..b0b1492d57 100644
--- a/src/quick/items/qquicktext_p_p.h
+++ b/src/quick/items/qquicktext_p_p.h
@@ -83,7 +83,7 @@ public:
     void setLineGeometry(QTextLine &line, qreal lineWidth, qreal &height);
 
     int lineHeightOffset() const;
-    QString elidedText(qreal lineWidth, const QTextLine &line, QTextLine *nextLine = 0) const;
+    QString elidedText(qreal lineWidth, const QTextLine &line, QTextLine *nextLine = nullptr) const;
     void elideFormats(int start, int length, int offset, QVector<QTextLayout::FormatRange> *elidedFormats);
     void clearFormats();
 
diff --git a/src/quick/items/qquicktextcontrol.cpp b/src/quick/items/qquicktextcontrol.cpp
index 874c02fc99..e3080dfe48 100644
--- a/src/quick/items/qquicktextcontrol.cpp
+++ b/src/quick/items/qquicktextcontrol.cpp
@@ -95,7 +95,7 @@ static QTextLine currentTextLine(const QTextCursor &cursor)
 }
 
 QQuickTextControlPrivate::QQuickTextControlPrivate()
-    : doc(0),
+    : doc(nullptr),
 #if QT_CONFIG(im)
       preeditCursor(0),
 #endif
diff --git a/src/quick/items/qquicktextcontrol_p.h b/src/quick/items/qquicktextcontrol_p.h
index 862a81af28..c99736a874 100644
--- a/src/quick/items/qquicktextcontrol_p.h
+++ b/src/quick/items/qquicktextcontrol_p.h
@@ -77,7 +77,7 @@ class Q_AUTOTEST_EXPORT QQuickTextControl : public QInputControl
     Q_OBJECT
     Q_DECLARE_PRIVATE(QQuickTextControl)
 public:
-    explicit QQuickTextControl(QTextDocument *doc, QObject *parent = 0);
+    explicit QQuickTextControl(QTextDocument *doc, QObject *parent = nullptr);
     virtual ~QQuickTextControl();
 
     QTextDocument *document() const;
diff --git a/src/quick/items/qquicktextedit.cpp b/src/quick/items/qquicktextedit.cpp
index 10abc1176a..352fc48970 100644
--- a/src/quick/items/qquicktextedit.cpp
+++ b/src/quick/items/qquicktextedit.cpp
@@ -139,7 +139,7 @@ namespace {
     class RootNode : public QSGTransformNode
     {
     public:
-        RootNode() : cursorNode(0), frameDecorationsNode(0)
+        RootNode() : cursorNode(nullptr), frameDecorationsNode(nullptr)
         { }
 
         void resetFrameDecorations(QQuickTextNode* newNode)
@@ -1991,12 +1991,12 @@ static inline void updateNodeTransform(QQuickTextNode* node, const QPointF &topL
 void QQuickTextEdit::invalidateFontCaches()
 {
     Q_D(QQuickTextEdit);
-    if (d->document == 0)
+    if (d->document == nullptr)
         return;
 
     QTextBlock block;
     for (block = d->document->firstBlock(); block.isValid(); block = block.next()) {
-        if (block.layout() != 0 && block.layout()->engine() != 0)
+        if (block.layout() != nullptr && block.layout()->engine() != nullptr)
             block.layout()->engine()->resetFontEngineCache();
     }
 }
@@ -2014,7 +2014,7 @@ QSGNode *QQuickTextEdit::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *
     Q_UNUSED(updatePaintNodeData);
     Q_D(QQuickTextEdit);
 
-    if (d->updateType != QQuickTextEditPrivate::UpdatePaintNode && oldNode != 0) {
+    if (d->updateType != QQuickTextEditPrivate::UpdatePaintNode && oldNode != nullptr) {
         // Update done in preprocess() in the nodes
         d->updateType = QQuickTextEditPrivate::UpdateNone;
         return oldNode;
@@ -2055,7 +2055,7 @@ QSGNode *QQuickTextEdit::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *
         rootNode->resetFrameDecorations(d->createTextNode());
         resetEngine(&frameDecorationsEngine, d->color, d->selectedTextColor, d->selectionColor);
 
-        QQuickTextNode *node = 0;
+        QQuickTextNode *node = nullptr;
 
         int currentNodeSize = 0;
         int nodeStart = firstDirtyPos;
@@ -2159,8 +2159,8 @@ QSGNode *QQuickTextEdit::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *
         std::sort(d->textNodeMap.begin(), d->textNodeMap.end());
     }
 
-    if (d->cursorComponent == 0) {
-        QSGInternalRectangleNode* cursor = 0;
+    if (d->cursorComponent == nullptr) {
+        QSGInternalRectangleNode* cursor = nullptr;
         if (!isReadOnly() && d->cursorVisible && d->control->cursorOn())
             cursor = d->sceneGraphContext()->createInternalRectangleNode(d->control->cursorRect(), d->color);
         rootNode->resetCursorNode(cursor);
diff --git a/src/quick/items/qquicktextedit_p.h b/src/quick/items/qquicktextedit_p.h
index c883e39168..7a847ffeae 100644
--- a/src/quick/items/qquicktextedit_p.h
+++ b/src/quick/items/qquicktextedit_p.h
@@ -114,7 +114,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickTextEdit : public QQuickImplicitSizeItem
     Q_PROPERTY(qreal tabStopDistance READ tabStopDistance WRITE setTabStopDistance NOTIFY tabStopDistanceChanged REVISION 10)
 
 public:
-    QQuickTextEdit(QQuickItem *parent=0);
+    QQuickTextEdit(QQuickItem *parent=nullptr);
 
     enum HAlignment {
         AlignLeft = Qt::AlignLeft,
@@ -384,7 +384,7 @@ private:
     void invalidateFontCaches();
 
 protected:
-    QQuickTextEdit(QQuickTextEditPrivate &dd, QQuickItem *parent = 0);
+    QQuickTextEdit(QQuickTextEditPrivate &dd, QQuickItem *parent = nullptr);
 
     void geometryChanged(const QRectF &newGeometry,
                          const QRectF &oldGeometry) override;
diff --git a/src/quick/items/qquicktextedit_p_p.h b/src/quick/items/qquicktextedit_p_p.h
index ef2bdfd0ea..46d3d5ff6b 100644
--- a/src/quick/items/qquicktextedit_p_p.h
+++ b/src/quick/items/qquicktextedit_p_p.h
@@ -112,8 +112,8 @@ public:
     QQuickTextEditPrivate()
         : color(QRgb(0xFF000000)), selectionColor(QRgb(0xFF000080)), selectedTextColor(QRgb(0xFFFFFFFF))
         , textMargin(0.0), xoff(0), yoff(0)
-        , font(sourceFont), cursorComponent(0), cursorItem(0), document(0), control(0)
-        , quickDocument(0), lastSelectionStart(0), lastSelectionEnd(0), lineCount(0)
+        , font(sourceFont), cursorComponent(nullptr), cursorItem(nullptr), document(nullptr), control(nullptr)
+        , quickDocument(nullptr), lastSelectionStart(0), lastSelectionEnd(0), lineCount(0)
         , hAlign(QQuickTextEdit::AlignLeft), vAlign(QQuickTextEdit::AlignTop)
         , format(QQuickTextEdit::PlainText), wrapMode(QQuickTextEdit::NoWrap)
         , renderType(QQuickTextUtil::textRenderType<QQuickTextEdit>())
diff --git a/src/quick/items/qquicktextinput.cpp b/src/quick/items/qquicktextinput.cpp
index 557ff393b4..b19c13c5ee 100644
--- a/src/quick/items/qquicktextinput.cpp
+++ b/src/quick/items/qquicktextinput.cpp
@@ -1863,7 +1863,7 @@ void QQuickTextInput::invalidateFontCaches()
 {
     Q_D(QQuickTextInput);
 
-    if (d->m_textLayout.engine() != 0)
+    if (d->m_textLayout.engine() != nullptr)
         d->m_textLayout.engine()->resetFontEngineCache();
 }
 
@@ -1886,7 +1886,7 @@ QSGNode *QQuickTextInput::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData
     Q_UNUSED(data);
     Q_D(QQuickTextInput);
 
-    if (d->updateType != QQuickTextInputPrivate::UpdatePaintNode && oldNode != 0) {
+    if (d->updateType != QQuickTextInputPrivate::UpdatePaintNode && oldNode != nullptr) {
         // Update done in preprocess() in the nodes
         d->updateType = QQuickTextInputPrivate::UpdateNone;
         return oldNode;
@@ -1895,13 +1895,13 @@ QSGNode *QQuickTextInput::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData
     d->updateType = QQuickTextInputPrivate::UpdateNone;
 
     QQuickTextNode *node = static_cast<QQuickTextNode *>(oldNode);
-    if (node == 0)
+    if (node == nullptr)
         node = new QQuickTextNode(this);
     d->textNode = node;
 
-    const bool showCursor = !isReadOnly() && d->cursorItem == 0 && d->cursorVisible && d->m_blinkStatus;
+    const bool showCursor = !isReadOnly() && d->cursorItem == nullptr && d->cursorVisible && d->m_blinkStatus;
 
-    if (!d->textLayoutDirty && oldNode != 0) {
+    if (!d->textLayoutDirty && oldNode != nullptr) {
         if (showCursor)
             node->setCursor(cursorRectangle(), d->color);
         else
@@ -3828,7 +3828,7 @@ void QQuickTextInputPrivate::parseInputMask(const QString &maskFields)
     if (maskFields.isEmpty() || delimiter == 0) {
         if (m_maskData) {
             delete [] m_maskData;
-            m_maskData = 0;
+            m_maskData = nullptr;
             m_maxLength = 32767;
             internalSetText(QString());
         }
diff --git a/src/quick/items/qquicktextinput_p.h b/src/quick/items/qquicktextinput_p.h
index b7d3fb00fa..c46a2f8128 100644
--- a/src/quick/items/qquicktextinput_p.h
+++ b/src/quick/items/qquicktextinput_p.h
@@ -115,7 +115,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickTextInput : public QQuickImplicitSizeItem
     Q_PROPERTY(qreal bottomPadding READ bottomPadding WRITE setBottomPadding RESET resetBottomPadding NOTIFY bottomPaddingChanged REVISION 6)
 
 public:
-    QQuickTextInput(QQuickItem * parent=0);
+    QQuickTextInput(QQuickItem * parent=nullptr);
     ~QQuickTextInput();
 
     void componentComplete() override;
@@ -363,7 +363,7 @@ private:
     void ensureActiveFocus();
 
 protected:
-    QQuickTextInput(QQuickTextInputPrivate &dd, QQuickItem *parent = 0);
+    QQuickTextInput(QQuickTextInputPrivate &dd, QQuickItem *parent = nullptr);
 
     void geometryChanged(const QRectF &newGeometry,
                                  const QRectF &oldGeometry) override;
diff --git a/src/quick/items/qquicktextinput_p_p.h b/src/quick/items/qquicktextinput_p_p.h
index c795aebfa9..a2e2f0f66d 100644
--- a/src/quick/items/qquicktextinput_p_p.h
+++ b/src/quick/items/qquicktextinput_p_p.h
@@ -99,9 +99,9 @@ public:
     QQuickTextInputPrivate()
         : hscroll(0)
         , vscroll(0)
-        , cursorItem(0)
-        , textNode(0)
-        , m_maskData(0)
+        , cursorItem(nullptr)
+        , textNode(nullptr)
+        , m_maskData(nullptr)
         , color(QRgb(0xFF000000))
         , selectionColor(QRgb(0xFF000080))
         , selectedTextColor(QRgb(0xFFFFFFFF))
diff --git a/src/quick/items/qquicktextnode.cpp b/src/quick/items/qquicktextnode.cpp
index cf4e71adf5..13a8219cbd 100644
--- a/src/quick/items/qquicktextnode.cpp
+++ b/src/quick/items/qquicktextnode.cpp
@@ -78,7 +78,7 @@ namespace {
   Creates an empty QQuickTextNode
 */
 QQuickTextNode::QQuickTextNode(QQuickItem *ownerElement)
-    : m_cursorNode(0), m_ownerElement(ownerElement), m_useNativeRenderer(false)
+    : m_cursorNode(nullptr), m_ownerElement(ownerElement), m_useNativeRenderer(false)
 {
 #ifdef QSG_RUNTIME_DESCRIPTION
     qsgnode_set_description(this, QLatin1String("text"));
@@ -125,7 +125,7 @@ QSGGlyphNode *QQuickTextNode::addGlyphs(const QPointF &position, const QGlyphRun
     node->geometry()->setIndexDataPattern(QSGGeometry::StaticPattern);
     node->geometry()->setVertexDataPattern(QSGGeometry::StaticPattern);
 
-    if (parentNode == 0)
+    if (parentNode == nullptr)
         parentNode = this;
     parentNode->appendChildNode(node);
 
@@ -134,7 +134,7 @@ QSGGlyphNode *QQuickTextNode::addGlyphs(const QPointF &position, const QGlyphRun
 
 void QQuickTextNode::setCursor(const QRectF &rect, const QColor &color)
 {
-    if (m_cursorNode != 0)
+    if (m_cursorNode != nullptr)
         delete m_cursorNode;
 
     QSGRenderContext *sg = QQuickItemPrivate::get(m_ownerElement)->sceneGraphRenderContext();
@@ -147,7 +147,7 @@ void QQuickTextNode::clearCursor()
     if (m_cursorNode)
         removeChildNode(m_cursorNode);
     delete m_cursorNode;
-    m_cursorNode = 0;
+    m_cursorNode = nullptr;
 }
 
 void QQuickTextNode::addRectangleNode(const QRectF &rect, const QColor &color)
@@ -273,9 +273,9 @@ void QQuickTextNode::addTextLayout(const QPointF &position, QTextLayout *textLay
 
 void QQuickTextNode::deleteContent()
 {
-    while (firstChild() != 0)
+    while (firstChild() != nullptr)
         delete firstChild();
-    m_cursorNode = 0;
+    m_cursorNode = nullptr;
     qDeleteAll(m_textures);
     m_textures.clear();
 }
diff --git a/src/quick/items/qquicktextnodeengine.cpp b/src/quick/items/qquicktextnodeengine.cpp
index c179ab7163..a53ca2a2a4 100644
--- a/src/quick/items/qquicktextnodeengine.cpp
+++ b/src/quick/items/qquicktextnodeengine.cpp
@@ -75,7 +75,7 @@ QQuickTextNodeEngine::BinaryTreeNode::BinaryTreeNode(const QGlyphRun &g,
     : glyphRun(g)
     , boundingRect(brect)
     , selectionState(selState)
-    , clipNode(0)
+    , clipNode(nullptr)
     , decorations(decs)
     , color(c)
     , backgroundColor(bc)
@@ -256,10 +256,10 @@ void QQuickTextNodeEngine::processCurrentLine()
     QVarLengthArray<TextDecoration> pendingOverlines;
     QVarLengthArray<TextDecoration> pendingStrikeOuts;
     if (!sortedIndexes.isEmpty()) {
-        QQuickDefaultClipNode *currentClipNode = m_hasSelection ? new QQuickDefaultClipNode(QRectF()) : 0;
+        QQuickDefaultClipNode *currentClipNode = m_hasSelection ? new QQuickDefaultClipNode(QRectF()) : nullptr;
         bool currentClipNodeUsed = false;
         for (int i=0; i<=sortedIndexes.size(); ++i) {
-            BinaryTreeNode *node = 0;
+            BinaryTreeNode *node = nullptr;
             if (i < sortedIndexes.size()) {
                 int sortedIndex = sortedIndexes.at(i);
                 Q_ASSERT(sortedIndex < m_currentLineTree.size());
@@ -275,7 +275,7 @@ void QQuickTextNodeEngine::processCurrentLine()
                 decorationRect.setY(m_position.y() + m_currentLine.y());
                 decorationRect.setHeight(m_currentLine.height());
 
-                if (node != 0)
+                if (node != nullptr)
                     decorationRect.setRight(node->boundingRect.left());
 
                 TextDecoration textDecoration(currentSelectionState, decorationRect, lastColor);
@@ -295,14 +295,14 @@ void QQuickTextNodeEngine::processCurrentLine()
             // If we've reached an unselected node from a selected node, we add the
             // selection rect to the graph, and we add decoration every time the
             // selection state changes, because that means the text color changes
-            if (node == 0 || node->selectionState != currentSelectionState) {
+            if (node == nullptr || node->selectionState != currentSelectionState) {
                 currentRect.setY(m_position.y() + m_currentLine.y());
                 currentRect.setHeight(m_currentLine.height());
 
                 if (currentSelectionState == Selected)
                     m_selectionRects.append(currentRect);
 
-                if (currentClipNode != 0) {
+                if (currentClipNode != nullptr) {
                     if (!currentClipNodeUsed) {
                         delete currentClipNode;
                     } else {
@@ -312,13 +312,13 @@ void QQuickTextNodeEngine::processCurrentLine()
                     }
                 }
 
-                if (node != 0 && m_hasSelection)
+                if (node != nullptr && m_hasSelection)
                     currentClipNode = new QQuickDefaultClipNode(QRectF());
                 else
-                    currentClipNode = 0;
+                    currentClipNode = nullptr;
                 currentClipNodeUsed = false;
 
-                if (node != 0) {
+                if (node != nullptr) {
                     currentSelectionState = node->selectionState;
                     currentRect = node->boundingRect;
 
@@ -333,7 +333,7 @@ void QQuickTextNodeEngine::processCurrentLine()
                     currentRect = currentRect.united(node->boundingRect);
             }
 
-            if (node != 0) {
+            if (node != nullptr) {
                 if (node->selectionState == Selected) {
                     node->clipNode = currentClipNode;
                     currentClipNodeUsed = true;
@@ -449,7 +449,7 @@ void QQuickTextNodeEngine::addTextObject(const QPointF &position, const QTextCha
                                          QTextFrameFormat::Position layoutPosition)
 {
     QTextObjectInterface *handler = textDocument->documentLayout()->handlerForObject(format.objectType());
-    if (handler != 0) {
+    if (handler != nullptr) {
         QImage image;
         QSizeF size = handler->intrinsicSize(textDocument, pos, format);
 
@@ -651,7 +651,7 @@ void QQuickTextNodeEngine::addFrameDecorations(QTextDocument *document, QTextFra
     QTextFrameFormat frameFormat = frame->format().toFrameFormat();
     QTextTable *table = qobject_cast<QTextTable *>(frame);
 
-    QRectF boundingRect = table == 0
+    QRectF boundingRect = table == nullptr
             ? documentLayout->frameBoundingRect(frame)
             : documentLayout->tableBoundingRect(table);
 
@@ -674,7 +674,7 @@ void QQuickTextNodeEngine::addFrameDecorations(QTextDocument *document, QTextFra
     addBorder(boundingRect.adjusted(frameFormat.leftMargin(), frameFormat.topMargin(),
                                     -frameFormat.rightMargin(), -frameFormat.bottomMargin()),
               borderWidth, borderStyle, borderBrush);
-    if (table != 0) {
+    if (table != nullptr) {
         int rows = table->rows();
         int columns = table->columns();
 
@@ -781,7 +781,7 @@ void  QQuickTextNodeEngine::addToSceneGraph(QQuickTextNode *parentNode,
     // Add all text with unselected color first
     for (int i = 0; i < nodes.size(); ++i) {
         const BinaryTreeNode *node = nodes.at(i);
-        parentNode->addGlyphs(node->position, node->glyphRun, node->color, style, styleColor, 0);
+        parentNode->addGlyphs(node->position, node->glyphRun, node->color, style, styleColor, nullptr);
     }
 
     for (int i = 0; i < imageNodes.size(); ++i) {
@@ -812,7 +812,7 @@ void  QQuickTextNodeEngine::addToSceneGraph(QQuickTextNode *parentNode,
     for (int i = 0; i < nodes.size(); ++i) {
         const BinaryTreeNode *node = nodes.at(i);
         QQuickDefaultClipNode *clipNode = node->clipNode;
-        if (clipNode != 0 && clipNode->parent() == 0)
+        if (clipNode != nullptr && clipNode->parent() == nullptr)
             parentNode->appendChildNode(clipNode);
 
         if (node->selectionState == Selected) {
@@ -820,26 +820,26 @@ void  QQuickTextNodeEngine::addToSceneGraph(QQuickTextNode *parentNode,
             int previousNodeIndex = i - 1;
             int nextNodeIndex = i + 1;
             const BinaryTreeNode *previousNode = previousNodeIndex < 0 ? 0 : nodes.at(previousNodeIndex);
-            while (previousNode != 0 && qFuzzyCompare(previousNode->boundingRect.left(), node->boundingRect.left()))
+            while (previousNode != nullptr && qFuzzyCompare(previousNode->boundingRect.left(), node->boundingRect.left()))
                 previousNode = --previousNodeIndex < 0 ? 0 : nodes.at(previousNodeIndex);
 
             const BinaryTreeNode *nextNode = nextNodeIndex == nodes.size() ? 0 : nodes.at(nextNodeIndex);
 
-            if (previousNode != 0 && previousNode->selectionState == Unselected)
+            if (previousNode != nullptr && previousNode->selectionState == Unselected)
                 parentNode->addGlyphs(previousNode->position, previousNode->glyphRun, color, style, styleColor, clipNode);
 
-            if (nextNode != 0 && nextNode->selectionState == Unselected)
+            if (nextNode != nullptr && nextNode->selectionState == Unselected)
                 parentNode->addGlyphs(nextNode->position, nextNode->glyphRun, color, style, styleColor, clipNode);
 
             // If the previous or next node completely overlaps this one, then we have already drawn the glyphs of
             // this node
             bool drawCurrent = false;
-            if (previousNode != 0 || nextNode != 0) {
+            if (previousNode != nullptr || nextNode != nullptr) {
                 for (int i = 0; i < node->ranges.size(); ++i) {
                     const QPair<int, int> &range = node->ranges.at(i);
 
                     int rangeLength = range.second - range.first + 1;
-                    if (previousNode != 0) {
+                    if (previousNode != nullptr) {
                         for (int j = 0; j < previousNode->ranges.size(); ++j) {
                             const QPair<int, int> &otherRange = previousNode->ranges.at(j);
 
@@ -853,7 +853,7 @@ void  QQuickTextNodeEngine::addToSceneGraph(QQuickTextNode *parentNode,
                         }
                     }
 
-                    if (nextNode != 0 && rangeLength > 0) {
+                    if (nextNode != nullptr && rangeLength > 0) {
                         for (int j = 0; j < nextNode->ranges.size(); ++j) {
                             const QPair<int, int> &otherRange = nextNode->ranges.at(j);
 
@@ -896,8 +896,8 @@ void  QQuickTextNodeEngine::addToSceneGraph(QQuickTextNode *parentNode,
 
 void QQuickTextNodeEngine::mergeFormats(QTextLayout *textLayout, QVarLengthArray<QTextLayout::FormatRange> *mergedFormats)
 {
-    Q_ASSERT(mergedFormats != 0);
-    if (textLayout == 0)
+    Q_ASSERT(mergedFormats != nullptr);
+    if (textLayout == nullptr)
         return;
 
     QVector<QTextLayout::FormatRange> additionalFormats = textLayout->formats();
@@ -911,7 +911,7 @@ void QQuickTextNodeEngine::mergeFormats(QTextLayout *textLayout, QVarLengthArray
                 QTextLayout::FormatRange *lastFormat = mergedFormats->data() + mergedFormats->size() - 1;
 
                 if (additionalFormat.start < lastFormat->start + lastFormat->length) {
-                    QTextLayout::FormatRange *mergedRange = 0;
+                    QTextLayout::FormatRange *mergedRange = nullptr;
 
                     int length = additionalFormat.length;
                     if (additionalFormat.start > lastFormat->start) {
diff --git a/src/quick/items/qquicktextutil.cpp b/src/quick/items/qquicktextutil.cpp
index 6aa6c5cb4b..eb356a9c48 100644
--- a/src/quick/items/qquicktextutil.cpp
+++ b/src/quick/items/qquicktextutil.cpp
@@ -48,7 +48,7 @@ QT_BEGIN_NAMESPACE
 QQuickItem *QQuickTextUtil::createCursor(
         QQmlComponent *component, QQuickItem *parent, const QRectF &rectangle, const char *className)
 {
-    QQuickItem *item = 0;
+    QQuickItem *item = nullptr;
     if (component->isReady()) {
         QQmlContext *creationContext = component->creationContext();
 
diff --git a/src/quick/items/qquicktranslate_p.h b/src/quick/items/qquicktranslate_p.h
index b0199cef40..b6ea43342c 100644
--- a/src/quick/items/qquicktranslate_p.h
+++ b/src/quick/items/qquicktranslate_p.h
@@ -66,7 +66,7 @@ class Q_AUTOTEST_EXPORT QQuickTranslate : public QQuickTransform
     Q_PROPERTY(qreal y READ y WRITE setY NOTIFY yChanged)
 
 public:
-    QQuickTranslate(QObject *parent = 0);
+    QQuickTranslate(QObject *parent = nullptr);
     ~QQuickTranslate();
 
     qreal x() const;
@@ -96,7 +96,7 @@ class Q_AUTOTEST_EXPORT QQuickScale : public QQuickTransform
     Q_PROPERTY(qreal yScale READ yScale WRITE setYScale NOTIFY yScaleChanged)
     Q_PROPERTY(qreal zScale READ zScale WRITE setZScale NOTIFY zScaleChanged)
 public:
-    QQuickScale(QObject *parent = 0);
+    QQuickScale(QObject *parent = nullptr);
     ~QQuickScale();
 
     QVector3D origin() const;
@@ -133,7 +133,7 @@ class Q_AUTOTEST_EXPORT QQuickRotation : public QQuickTransform
     Q_PROPERTY(qreal angle READ angle WRITE setAngle NOTIFY angleChanged)
     Q_PROPERTY(QVector3D axis READ axis WRITE setAxis NOTIFY axisChanged)
 public:
-    QQuickRotation(QObject *parent = 0);
+    QQuickRotation(QObject *parent = nullptr);
     ~QQuickRotation();
 
     QVector3D origin() const;
@@ -164,7 +164,7 @@ class Q_AUTOTEST_EXPORT QQuickMatrix4x4 : public QQuickTransform
 
     Q_PROPERTY(QMatrix4x4 matrix READ matrix WRITE setMatrix NOTIFY matrixChanged)
 public:
-    QQuickMatrix4x4(QObject *parent = 0);
+    QQuickMatrix4x4(QObject *parent = nullptr);
     ~QQuickMatrix4x4();
 
     QMatrix4x4 matrix() const;
diff --git a/src/quick/items/qquickview.cpp b/src/quick/items/qquickview.cpp
index ff9789ad57..1ac6c768e8 100644
--- a/src/quick/items/qquickview.cpp
+++ b/src/quick/items/qquickview.cpp
@@ -76,7 +76,7 @@ void QQuickViewPrivate::init(QQmlEngine* e)
 }
 
 QQuickViewPrivate::QQuickViewPrivate()
-    : root(0), component(0), resizeMode(QQuickView::SizeViewToRootObject), initialSize(0,0)
+    : root(nullptr), component(nullptr), resizeMode(QQuickView::SizeViewToRootObject), initialSize(0,0)
 {
 }
 
@@ -94,11 +94,11 @@ void QQuickViewPrivate::execute()
 
     if (root) {
         delete root;
-        root = 0;
+        root = nullptr;
     }
     if (component) {
         delete component;
-        component = 0;
+        component = nullptr;
     }
     if (!source.isEmpty()) {
         QML_MEMORY_SCOPE_URL(engine.data()->baseUrl().resolved(source));
@@ -216,7 +216,7 @@ QQuickView::~QQuickView()
     // be a child of the QQuickViewPrivate, and will be destroyed by its dtor
     Q_D(QQuickView);
     delete d->root;
-    d->root = 0;
+    d->root = nullptr;
 }
 
 /*!
@@ -260,7 +260,7 @@ void QQuickView::setContent(const QUrl& url, QQmlComponent *component, QObject*
     if (d->component && d->component->isError()) {
         const QList<QQmlError> errorList = d->component->errors();
         for (const QQmlError &error : errorList) {
-            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), 0).warning()
+            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), nullptr).warning()
                     << error;
         }
         emit statusChanged(status());
@@ -289,7 +289,7 @@ QUrl QQuickView::source() const
 QQmlEngine* QQuickView::engine() const
 {
     Q_D(const QQuickView);
-    return d->engine ? const_cast<QQmlEngine *>(d->engine.data()) : 0;
+    return d->engine ? const_cast<QQmlEngine *>(d->engine.data()) : nullptr;
 }
 
 /*!
@@ -302,7 +302,7 @@ QQmlEngine* QQuickView::engine() const
 QQmlContext* QQuickView::rootContext() const
 {
     Q_D(const QQuickView);
-    return d->engine ? d->engine.data()->rootContext() : 0;
+    return d->engine ? d->engine.data()->rootContext() : nullptr;
 }
 
 /*!
@@ -471,7 +471,7 @@ void QQuickView::continueExecute()
     if (d->component->isError()) {
         const QList<QQmlError> errorList = d->component->errors();
         for (const QQmlError &error : errorList) {
-            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), 0).warning()
+            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), nullptr).warning()
                     << error;
         }
         emit statusChanged(status());
@@ -483,7 +483,7 @@ void QQuickView::continueExecute()
     if (d->component->isError()) {
         const QList<QQmlError> errorList = d->component->errors();
         for (const QQmlError &error : errorList) {
-            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), 0).warning()
+            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), nullptr).warning()
                     << error;
         }
         emit statusChanged(status());
@@ -517,7 +517,7 @@ void QQuickViewPrivate::setRootObject(QObject *obj)
                    << "Ensure your QML code is written for QtQuick 2, and uses a root that is or" << endl
                    << "inherits from QtQuick's Item (not a Timer, QtObject, etc)." << endl;
         delete obj;
-        root = 0;
+        root = nullptr;
     }
     if (root) {
         initialSize = rootObjectSize();
diff --git a/src/quick/items/qquickview_p.h b/src/quick/items/qquickview_p.h
index f92d4b95d6..3f284c0519 100644
--- a/src/quick/items/qquickview_p.h
+++ b/src/quick/items/qquickview_p.h
@@ -93,7 +93,7 @@ public:
     void updateSize();
     void setRootObject(QObject *);
 
-    void init(QQmlEngine* e = 0);
+    void init(QQmlEngine* e = nullptr);
 
     QSize rootObjectSize() const;
 
diff --git a/src/quick/items/qquickwindow.cpp b/src/quick/items/qquickwindow.cpp
index c1148c00d1..aefdaea2b7 100644
--- a/src/quick/items/qquickwindow.cpp
+++ b/src/quick/items/qquickwindow.cpp
@@ -485,25 +485,25 @@ void QQuickWindowPrivate::renderSceneGraph(const QSize &size)
 }
 
 QQuickWindowPrivate::QQuickWindowPrivate()
-    : contentItem(0)
-    , activeFocusItem(0)
+    : contentItem(nullptr)
+    , activeFocusItem(nullptr)
 #if QT_CONFIG(cursor)
-    , cursorItem(0)
+    , cursorItem(nullptr)
 #endif
 #if QT_CONFIG(draganddrop)
-    , dragGrabber(0)
+    , dragGrabber(nullptr)
 #endif
     , touchMouseId(-1)
     , touchMouseDevice(nullptr)
     , touchMousePressTimestamp(0)
-    , dirtyItemList(0)
+    , dirtyItemList(nullptr)
     , devicePixelRatio(0)
-    , context(0)
-    , renderer(0)
-    , windowManager(0)
-    , renderControl(0)
+    , context(nullptr)
+    , renderer(nullptr)
+    , windowManager(nullptr)
+    , renderControl(nullptr)
     , pointerEventRecursionGuard(0)
-    , customRenderStage(0)
+    , customRenderStage(nullptr)
     , clearColor(Qt::white)
     , clearBeforeRendering(true)
     , persistentGLContext(true)
@@ -513,10 +513,10 @@ QQuickWindowPrivate::QQuickWindowPrivate()
     , allowChildEventFiltering(true)
     , allowDoubleClick(true)
     , lastFocusReason(Qt::OtherFocusReason)
-    , renderTarget(0)
+    , renderTarget(nullptr)
     , renderTargetId(0)
-    , vaoHelper(0)
-    , incubationController(0)
+    , vaoHelper(nullptr)
+    , incubationController(nullptr)
 {
 #if QT_CONFIG(draganddrop)
     dragGrabber = new QQuickDragGrabber;
@@ -602,7 +602,7 @@ void QQuickWindow::handleApplicationStateChanged(Qt::ApplicationState state)
 
 QQmlListProperty<QObject> QQuickWindowPrivate::data()
 {
-    return QQmlListProperty<QObject>(q_func(), 0, QQuickWindowPrivate::data_append,
+    return QQmlListProperty<QObject>(q_func(), nullptr, QQuickWindowPrivate::data_append,
                                              QQuickWindowPrivate::data_count,
                                              QQuickWindowPrivate::data_at,
                                              QQuickWindowPrivate::data_clear);
@@ -889,12 +889,12 @@ void QQuickWindowPrivate::setFocusInScope(QQuickItem *scope, QQuickItem *item, Q
     qCDebug(DBG_FOCUS) << "    item:" << (QObject *)item;
     qCDebug(DBG_FOCUS) << "    activeFocusItem:" << (QObject *)activeFocusItem;
 
-    QQuickItemPrivate *scopePrivate = scope ? QQuickItemPrivate::get(scope) : 0;
+    QQuickItemPrivate *scopePrivate = scope ? QQuickItemPrivate::get(scope) : nullptr;
     QQuickItemPrivate *itemPrivate = QQuickItemPrivate::get(item);
 
-    QQuickItem *oldActiveFocusItem = 0;
+    QQuickItem *oldActiveFocusItem = nullptr;
     QQuickItem *currentActiveFocusItem = activeFocusItem;
-    QQuickItem *newActiveFocusItem = 0;
+    QQuickItem *newActiveFocusItem = nullptr;
     bool sendFocusIn = false;
 
     lastFocusReason = reason;
@@ -920,7 +920,7 @@ void QQuickWindowPrivate::setFocusInScope(QQuickItem *scope, QQuickItem *item, Q
             QGuiApplication::inputMethod()->commit();
 #endif
 
-            activeFocusItem = 0;
+            activeFocusItem = nullptr;
 
             QQuickItem *afi = oldActiveFocusItem;
             while (afi && afi != scope) {
@@ -1000,7 +1000,7 @@ void QQuickWindowPrivate::clearFocusInScope(QQuickItem *scope, QQuickItem *item,
     qCDebug(DBG_FOCUS) << "    item:" << (QObject *)item;
     qCDebug(DBG_FOCUS) << "    activeFocusItem:" << (QObject *)activeFocusItem;
 
-    QQuickItemPrivate *scopePrivate = 0;
+    QQuickItemPrivate *scopePrivate = nullptr;
     if (scope) {
         scopePrivate = QQuickItemPrivate::get(scope);
         if ( !scopePrivate->subFocusItem )
@@ -1008,8 +1008,8 @@ void QQuickWindowPrivate::clearFocusInScope(QQuickItem *scope, QQuickItem *item,
     }
 
     QQuickItem *currentActiveFocusItem = activeFocusItem;
-    QQuickItem *oldActiveFocusItem = 0;
-    QQuickItem *newActiveFocusItem = 0;
+    QQuickItem *oldActiveFocusItem = nullptr;
+    QQuickItem *newActiveFocusItem = nullptr;
 
     lastFocusReason = reason;
 
@@ -1026,7 +1026,7 @@ void QQuickWindowPrivate::clearFocusInScope(QQuickItem *scope, QQuickItem *item,
         QGuiApplication::inputMethod()->commit();
 #endif
 
-        activeFocusItem = 0;
+        activeFocusItem = nullptr;
 
         if (oldActiveFocusItem) {
             QQuickItem *afi = oldActiveFocusItem;
@@ -1275,7 +1275,7 @@ QQuickWindow::QQuickWindow(QQuickWindowPrivate &dd, QWindow *parent)
     \internal
 */
 QQuickWindow::QQuickWindow(QQuickRenderControl *control)
-    : QWindow(*(new QQuickWindowPrivate), 0)
+    : QWindow(*(new QQuickWindowPrivate), nullptr)
 {
     Q_D(QQuickWindow);
     d->init(this, control);
@@ -1285,7 +1285,7 @@ QQuickWindow::QQuickWindow(QQuickRenderControl *control)
     \internal
 */
 QQuickWindow::QQuickWindow(QQuickWindowPrivate &dd, QQuickRenderControl *control)
-    : QWindow(dd, 0)
+    : QWindow(dd, nullptr)
 {
     Q_D(QQuickWindow);
     d->init(this, control);
@@ -1305,11 +1305,11 @@ QQuickWindow::~QQuickWindow()
         d->windowManager->windowDestroyed(this);
     }
 
-    delete d->incubationController; d->incubationController = 0;
+    delete d->incubationController; d->incubationController = nullptr;
 #if QT_CONFIG(draganddrop)
-    delete d->dragGrabber; d->dragGrabber = 0;
+    delete d->dragGrabber; d->dragGrabber = nullptr;
 #endif
-    delete d->contentItem; d->contentItem = 0;
+    delete d->contentItem; d->contentItem = nullptr;
     qDeleteAll(d->pointerEventInstances);
     d->pointerEventInstances.clear();
 
@@ -2762,7 +2762,7 @@ QQuickItem *QQuickWindowPrivate::findCursorItem(QQuickItem *item, const QPointF
     if (itemPrivate->flags & QQuickItem::ItemClipsChildrenToShape) {
         QPointF p = item->mapFromScene(scenePos);
         if (!item->contains(p))
-            return 0;
+            return nullptr;
     }
 
     if (itemPrivate->subtreeCursorEnabled) {
@@ -2781,7 +2781,7 @@ QQuickItem *QQuickWindowPrivate::findCursorItem(QQuickItem *item, const QPointF
         if (item->contains(p))
             return item;
     }
-    return 0;
+    return nullptr;
 }
 #endif
 
@@ -3107,15 +3107,15 @@ void QQuickWindowPrivate::cleanupNodesOnShutdown(QQuickItem *item)
     QQuickItemPrivate *p = QQuickItemPrivate::get(item);
     if (p->itemNodeInstance) {
         delete p->itemNodeInstance;
-        p->itemNodeInstance = 0;
+        p->itemNodeInstance = nullptr;
 
         if (p->extra.isAllocated()) {
-            p->extra->opacityNode = 0;
-            p->extra->clipNode = 0;
-            p->extra->rootNode = 0;
+            p->extra->opacityNode = nullptr;
+            p->extra->clipNode = nullptr;
+            p->extra->rootNode = nullptr;
         }
 
-        p->paintNode = 0;
+        p->paintNode = nullptr;
 
         p->dirty(QQuickItemPrivate::Window);
     }
@@ -3127,7 +3127,7 @@ void QQuickWindowPrivate::cleanupNodesOnShutdown(QQuickItem *item)
         if (index >= 0) {
             const QMetaMethod &method = mo->method(index);
             // Skip functions named invalidateSceneGraph() in QML items.
-            if (strstr(method.enclosingMetaObject()->className(), "_QML_") == 0)
+            if (strstr(method.enclosingMetaObject()->className(), "_QML_") == nullptr)
                 method.invoke(item, Qt::DirectConnection);
         }
     }
@@ -3155,7 +3155,7 @@ void QQuickWindowPrivate::updateDirtyNodes()
     cleanupNodes();
 
     QQuickItem *updateList = dirtyItemList;
-    dirtyItemList = 0;
+    dirtyItemList = nullptr;
     if (updateList) QQuickItemPrivate::get(updateList)->prevDirtyItem = &updateList;
 
     while (updateList) {
@@ -3171,7 +3171,7 @@ void QQuickWindowPrivate::updateDirtyNodes()
 static inline QSGNode *qquickitem_before_paintNode(QQuickItemPrivate *d)
 {
     const QList<QQuickItem *> childItems = d->paintOrderChildItems();
-    QQuickItem *before = 0;
+    QQuickItem *before = nullptr;
     for (int i=0; i<childItems.size(); ++i) {
         QQuickItemPrivate *dd = QQuickItemPrivate::get(childItems.at(i));
         // Perform the same check as the in fetchNextNode below.
@@ -3180,7 +3180,7 @@ static inline QSGNode *qquickitem_before_paintNode(QQuickItemPrivate *d)
         else
             break;
     }
-    return Q_UNLIKELY(before) ? QQuickItemPrivate::get(before)->itemNode() : 0;
+    return Q_UNLIKELY(before) ? QQuickItemPrivate::get(before)->itemNode() : nullptr;
 }
 
 static QSGNode *fetchNextNode(QQuickItemPrivate *itemPriv, int &ii, bool &returnedPaintNode)
@@ -3212,7 +3212,7 @@ static QSGNode *fetchNextNode(QQuickItemPrivate *itemPriv, int &ii, bool &return
         return childPrivate->itemNode();
     }
 
-    return 0;
+    return nullptr;
 }
 
 void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
@@ -3247,10 +3247,10 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
     }
 
     bool clipEffectivelyChanged = (dirty & (QQuickItemPrivate::Clip | QQuickItemPrivate::Window)) &&
-                                  ((item->clip() == false) != (itemPriv->clipNode() == 0));
+                                  ((item->clip() == false) != (itemPriv->clipNode() == nullptr));
     int effectRefCount = itemPriv->extra.isAllocated()?itemPriv->extra->effectRefCount:0;
     bool effectRefEffectivelyChanged = (dirty & (QQuickItemPrivate::EffectReference | QQuickItemPrivate::Window)) &&
-                                  ((effectRefCount == 0) != (itemPriv->rootNode() == 0));
+                                  ((effectRefCount == 0) != (itemPriv->rootNode() == nullptr));
 
     if (clipEffectivelyChanged) {
         QSGNode *parent = itemPriv->opacityNode() ? (QSGNode *) itemPriv->opacityNode() :
@@ -3258,7 +3258,7 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
         QSGNode *child = itemPriv->rootNode();
 
         if (item->clip()) {
-            Q_ASSERT(itemPriv->clipNode() == 0);
+            Q_ASSERT(itemPriv->clipNode() == nullptr);
             QQuickDefaultClipNode *clip = new QQuickDefaultClipNode(item->clipRect());
             itemPriv->extra.value().clipNode = clip;
             clip->update();
@@ -3284,7 +3284,7 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
             }
 
             delete itemPriv->clipNode();
-            itemPriv->extra->clipNode = 0;
+            itemPriv->extra->clipNode = nullptr;
         }
     }
 
@@ -3299,18 +3299,18 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
             parent = itemPriv->itemNode();
 
         if (itemPriv->extra.isAllocated() && itemPriv->extra->effectRefCount) {
-            Q_ASSERT(itemPriv->rootNode() == 0);
+            Q_ASSERT(itemPriv->rootNode() == nullptr);
             QSGRootNode *root = new QSGRootNode();
             itemPriv->extra->rootNode = root;
             parent->reparentChildNodesTo(root);
             parent->appendChildNode(root);
         } else {
-            Q_ASSERT(itemPriv->rootNode() != 0);
+            Q_ASSERT(itemPriv->rootNode() != nullptr);
             QSGRootNode *root = itemPriv->rootNode();
             parent->removeChildNode(root);
             root->reparentChildNodesTo(parent);
             delete itemPriv->rootNode();
-            itemPriv->extra->rootNode = 0;
+            itemPriv->extra->rootNode = nullptr;
         }
     }
 
@@ -3336,7 +3336,7 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
         int added = 0;
         int removed = 0;
         int replaced = 0;
-        QSGNode *desiredNode = 0;
+        QSGNode *desiredNode = nullptr;
 
         while (currentNode && (desiredNode = fetchNextNode(itemPriv, ii, fetchedPaintNode))) {
             // uh oh... reality and our utopic paradise are diverging!
@@ -3421,11 +3421,11 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
             updatePaintNodeData.transformNode = itemPriv->itemNode();
             itemPriv->paintNode = item->updatePaintNode(itemPriv->paintNode, &updatePaintNodeData);
 
-            Q_ASSERT(itemPriv->paintNode == 0 ||
-                     itemPriv->paintNode->parent() == 0 ||
+            Q_ASSERT(itemPriv->paintNode == nullptr ||
+                     itemPriv->paintNode->parent() == nullptr ||
                      itemPriv->paintNode->parent() == itemPriv->childContainerNode());
 
-            if (itemPriv->paintNode && itemPriv->paintNode->parent() == 0) {
+            if (itemPriv->paintNode && itemPriv->paintNode->parent() == nullptr) {
                 QSGNode *before = qquickitem_before_paintNode(itemPriv);
                 if (before && before->parent()) {
                     Q_ASSERT(before->parent() == itemPriv->childContainerNode());
@@ -3436,7 +3436,7 @@ void QQuickWindowPrivate::updateDirtyNode(QQuickItem *item)
             }
         } else if (itemPriv->paintNode) {
             delete itemPriv->paintNode;
-            itemPriv->paintNode = 0;
+            itemPriv->paintNode = nullptr;
         }
     }
 
@@ -3488,14 +3488,14 @@ void QQuickWindow::cleanupSceneGraph()
     Q_D(QQuickWindow);
 #if QT_CONFIG(opengl)
     delete d->vaoHelper;
-    d->vaoHelper = 0;
+    d->vaoHelper = nullptr;
 #endif
     if (!d->renderer)
         return;
 
     delete d->renderer->rootNode();
     delete d->renderer;
-    d->renderer = 0;
+    d->renderer = nullptr;
 
     d->runAndClearJobs(&d->beforeSynchronizingJobs);
     d->runAndClearJobs(&d->afterSynchronizingJobs);
@@ -3545,7 +3545,7 @@ QOpenGLContext *QQuickWindow::openglContext() const
 bool QQuickWindow::isSceneGraphInitialized() const
 {
     Q_D(const QQuickWindow);
-    return d->context != 0 && d->context->isValid();
+    return d->context != nullptr && d->context->isValid();
 }
 
 /*!
@@ -3723,7 +3723,7 @@ void QQuickWindow::setRenderTarget(uint fboId, const QSize &size)
     d->renderTargetSize = size;
 
     // Unset any previously set instance...
-    d->renderTarget = 0;
+    d->renderTarget = nullptr;
 }
 
 
@@ -3837,7 +3837,7 @@ QQmlIncubationController *QQuickWindow::incubationController() const
     Q_D(const QQuickWindow);
 
     if (!d->windowManager)
-        return 0; // TODO: make sure that this is safe
+        return nullptr; // TODO: make sure that this is safe
 
     if (!d->incubationController)
         d->incubationController = new QQuickWindowIncubationController(d->windowManager);
@@ -4081,7 +4081,7 @@ bool QQuickWindow::clearBeforeRendering() const
 
 QSGTexture *QQuickWindow::createTextureFromImage(const QImage &image) const
 {
-    return createTextureFromImage(image, 0);
+    return createTextureFromImage(image, nullptr);
 }
 
 
@@ -4130,7 +4130,7 @@ QSGTexture *QQuickWindow::createTextureFromImage(const QImage &image, CreateText
 {
     Q_D(const QQuickWindow);
     if (!isSceneGraphInitialized()) // check both for d->context and d->context->isValid()
-         return 0;
+         return nullptr;
     uint flags = 0;
     if (options & TextureCanUseAtlas)     flags |= QSGRenderContext::CreateTexture_Atlas;
     if (options & TextureHasMipmaps)      flags |= QSGRenderContext::CreateTexture_Mipmap;
@@ -4176,7 +4176,7 @@ QSGTexture *QQuickWindow::createTextureFromId(uint id, const QSize &size, Create
     Q_UNUSED(size)
     Q_UNUSED(options)
 #endif
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -4290,7 +4290,7 @@ void QQuickWindow::resetOpenGLState()
         int maxAttribs;
         gl->glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &maxAttribs);
         for (int i=0; i<maxAttribs; ++i) {
-            gl->glVertexAttribPointer(i, 4, GL_FLOAT, GL_FALSE, 0, 0);
+            gl->glVertexAttribPointer(i, 4, GL_FLOAT, GL_FALSE, 0, nullptr);
             gl->glDisableVertexAttribArray(i);
         }
     }
diff --git a/src/quick/items/qquickwindow_p.h b/src/quick/items/qquickwindow_p.h
index ce9b98504c..cd5ff31994 100644
--- a/src/quick/items/qquickwindow_p.h
+++ b/src/quick/items/qquickwindow_p.h
@@ -116,7 +116,7 @@ public:
     QQuickWindowPrivate();
     virtual ~QQuickWindowPrivate();
 
-    void init(QQuickWindow *, QQuickRenderControl *control = 0);
+    void init(QQuickWindow *, QQuickRenderControl *control = nullptr);
 
     QQuickRootItem *contentItem;
     QSet<QQuickItem *> parentlessItems;
@@ -146,7 +146,7 @@ public:
     void grabTouchPoints(QObject *grabber, const QVector<int> &ids);
     void removeGrabber(QQuickItem *grabber, bool mouse = true, bool touch = true);
     void sendUngrabEvent(QQuickItem *grabber, bool touch);
-    static QMouseEvent *cloneMouseEvent(QMouseEvent *event, QPointF *transformedLocalPos = 0);
+    static QMouseEvent *cloneMouseEvent(QMouseEvent *event, QPointF *transformedLocalPos = nullptr);
     void deliverToPassiveGrabbers(const QVector<QPointer <QQuickPointerHandler> > &passiveGrabbers, QQuickPointerEvent *pointerEvent);
     void deliverMouseEvent(QQuickPointerMouseEvent *pointerEvent);
     bool sendFilteredMouseEvent(QEvent *event, QQuickItem *receiver, QQuickItem *filteringParent);
@@ -205,8 +205,8 @@ public:
     };
     Q_DECLARE_FLAGS(FocusOptions, FocusOption)
 
-    void setFocusInScope(QQuickItem *scope, QQuickItem *item, Qt::FocusReason reason, FocusOptions = 0);
-    void clearFocusInScope(QQuickItem *scope, QQuickItem *item, Qt::FocusReason reason, FocusOptions = 0);
+    void setFocusInScope(QQuickItem *scope, QQuickItem *item, Qt::FocusReason reason, FocusOptions = nullptr);
+    void clearFocusInScope(QQuickItem *scope, QQuickItem *item, Qt::FocusReason reason, FocusOptions = nullptr);
     static void notifyFocusChangesRecur(QQuickItem **item, int remaining);
     void clearFocusObject() override;
 
diff --git a/src/quick/items/qquickwindowattached.cpp b/src/quick/items/qquickwindowattached.cpp
index ae62a7a496..481366222d 100644
--- a/src/quick/items/qquickwindowattached.cpp
+++ b/src/quick/items/qquickwindowattached.cpp
@@ -47,7 +47,7 @@ QT_BEGIN_NAMESPACE
 
 QQuickWindowAttached::QQuickWindowAttached(QObject* attachee)
     : QObject(attachee)
-    , m_window(NULL)
+    , m_window(nullptr)
 {
     m_attachee = qobject_cast<QQuickItem*>(attachee);
     if (m_attachee && m_attachee->window()) // It might not be in a window yet
diff --git a/src/quick/qtquick2.cpp b/src/quick/qtquick2.cpp
index 00fc23645b..24467a3701 100644
--- a/src/quick/qtquick2.cpp
+++ b/src/quick/qtquick2.cpp
@@ -140,7 +140,7 @@ void QQmlQtQuick2DebugStatesDelegate::updateBinding(QQmlContext *context,
             if (state->isStateActive() && state->containsPropertyInRevertList(object, propertyName)) {
                 *inBaseState = false;
 
-                QQmlBinding *newBinding = 0;
+                QQmlBinding *newBinding = nullptr;
                 if (!isLiteralValue) {
                     newBinding = QQmlBinding::create(&QQmlPropertyPrivate::get(property)->core,
                                                      expression.toString(), object,
diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwareadaptation.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwareadaptation.cpp
index 92c02b4966..a8b5944974 100644
--- a/src/quick/scenegraph/adaptations/software/qsgsoftwareadaptation.cpp
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwareadaptation.cpp
@@ -87,6 +87,6 @@ QSGRenderLoop *QSGSoftwareAdaptation::createWindowManager()
     return new QSGSoftwareRenderLoop();
 }
 
-QSGSoftwareContext *QSGSoftwareAdaptation::instance = 0;
+QSGSoftwareContext *QSGSoftwareAdaptation::instance = nullptr;
 
 QT_END_NAMESPACE
diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwareadaptation_p.h b/src/quick/scenegraph/adaptations/software/qsgsoftwareadaptation_p.h
index ffe54b5d4b..8b2a545033 100644
--- a/src/quick/scenegraph/adaptations/software/qsgsoftwareadaptation_p.h
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwareadaptation_p.h
@@ -62,7 +62,7 @@ class QSGSoftwareContext;
 class QSGSoftwareAdaptation : public QSGContextPlugin
 {
 public:
-    QSGSoftwareAdaptation(QObject *parent = 0);
+    QSGSoftwareAdaptation(QObject *parent = nullptr);
 
     QStringList keys() const override;
     QSGContext *create(const QString &key) const override;
diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwarecontext.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwarecontext.cpp
index aa850a80db..5b5bf005d8 100644
--- a/src/quick/scenegraph/adaptations/software/qsgsoftwarecontext.cpp
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwarecontext.cpp
@@ -205,12 +205,12 @@ QSGRendererInterface::ShaderType QSGSoftwareContext::shaderType() const
 
 QSGRendererInterface::ShaderCompilationTypes QSGSoftwareContext::shaderCompilationType() const
 {
-    return 0;
+    return nullptr;
 }
 
 QSGRendererInterface::ShaderSourceTypes QSGSoftwareContext::shaderSourceType() const
 {
-    return 0;
+    return nullptr;
 }
 
 void *QSGSoftwareContext::getResource(QQuickWindow *window, Resource resource) const
diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwareinternalimagenode.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwareinternalimagenode.cpp
index 8843b6450a..3b0f3c48ff 100644
--- a/src/quick/scenegraph/adaptations/software/qsgsoftwareinternalimagenode.cpp
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwareinternalimagenode.cpp
@@ -318,7 +318,7 @@ void qDrawBorderPixmap(QPainter *painter, const QRect &targetRect, const QMargin
 QSGSoftwareInternalImageNode::QSGSoftwareInternalImageNode()
     : m_innerSourceRect(0, 0, 1, 1)
     , m_subSourceRect(0, 0, 1, 1)
-    , m_texture(0)
+    , m_texture(nullptr)
     , m_mirror(false)
     , m_smooth(true)
     , m_tileHorizontal(false)
@@ -462,7 +462,7 @@ void QSGSoftwareInternalImageNode::paint(QPainter *painter)
                          m_targetRect.right() - m_innerTargetRect.right(), m_targetRect.bottom() - m_innerTargetRect.bottom());
         QSGSoftwareHelpers::QTileRules tilerules(getTileRule(m_subSourceRect.width()), getTileRule(m_subSourceRect.height()));
         QSGSoftwareHelpers::qDrawBorderPixmap(painter, m_targetRect.toRect(), margins, pm, QRect(0, 0, pm.width(), pm.height()),
-                                              margins, tilerules, QSGSoftwareHelpers::QDrawBorderPixmap::DrawingHints(0));
+                                              margins, tilerules, QSGSoftwareHelpers::QDrawBorderPixmap::DrawingHints(nullptr));
         return;
     }
 
@@ -494,7 +494,7 @@ const QPixmap &QSGSoftwareInternalImageNode::pixmap() const
         return pt->pixmap();
     if (QSGSoftwareLayer *layer = qobject_cast<QSGSoftwareLayer*>(m_texture))
         return layer->pixmap();
-    Q_ASSERT(m_texture == 0);
+    Q_ASSERT(m_texture == nullptr);
     static const QPixmap nullPixmap;
     return nullPixmap;
 }
diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwarelayer.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwarelayer.cpp
index 9d30c43f87..b4301451d8 100644
--- a/src/quick/scenegraph/adaptations/software/qsgsoftwarelayer.cpp
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwarelayer.cpp
@@ -45,9 +45,9 @@
 QT_BEGIN_NAMESPACE
 
 QSGSoftwareLayer::QSGSoftwareLayer(QSGRenderContext *renderContext)
-    : m_item(0)
+    : m_item(nullptr)
     , m_context(renderContext)
-    , m_renderer(0)
+    , m_renderer(nullptr)
     , m_device_pixel_ratio(1)
     , m_mirrorHorizontal(false)
     , m_mirrorVertical(true)
@@ -203,7 +203,7 @@ void QSGSoftwareLayer::markDirtyTexture()
 void QSGSoftwareLayer::invalidated()
 {
     delete m_renderer;
-    m_renderer = 0;
+    m_renderer = nullptr;
 }
 
 void QSGSoftwareLayer::grab()
diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwarepainternode.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwarepainternode.cpp
index 34b0cd5b72..60ae06dd94 100644
--- a/src/quick/scenegraph/adaptations/software/qsgsoftwarepainternode.cpp
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwarepainternode.cpp
@@ -47,7 +47,7 @@ QSGSoftwarePainterNode::QSGSoftwarePainterNode(QQuickPaintedItem *item)
     : QSGPainterNode()
     , m_preferredRenderTarget(QQuickPaintedItem::Image)
     , m_item(item)
-    , m_texture(0)
+    , m_texture(nullptr)
     , m_dirtyContents(false)
     , m_opaquePainting(false)
     , m_linear_filtering(false)
diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwarepublicnodes.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwarepublicnodes.cpp
index 77d21ec042..1463681fa3 100644
--- a/src/quick/scenegraph/adaptations/software/qsgsoftwarepublicnodes.cpp
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwarepublicnodes.cpp
@@ -188,7 +188,7 @@ void QSGSoftwareNinePatchNode::paint(QPainter *painter)
         painter->drawPixmap(m_bounds, m_pixmap, QRectF(0, 0, m_pixmap.width(), m_pixmap.height()));
     else
         QSGSoftwareHelpers::qDrawBorderPixmap(painter, m_bounds.toRect(), m_margins, m_pixmap, QRect(0, 0, m_pixmap.width(), m_pixmap.height()),
-                                              m_margins, Qt::StretchTile, QSGSoftwareHelpers::QDrawBorderPixmap::DrawingHints(0));
+                                              m_margins, Qt::StretchTile, QSGSoftwareHelpers::QDrawBorderPixmap::DrawingHints(nullptr));
 }
 
 QRectF QSGSoftwareNinePatchNode::bounds() const
diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwarethreadedrenderloop.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwarethreadedrenderloop.cpp
index a7485a90eb..f8973af2fb 100644
--- a/src/quick/scenegraph/adaptations/software/qsgsoftwarethreadedrenderloop.cpp
+++ b/src/quick/scenegraph/adaptations/software/qsgsoftwarethreadedrenderloop.cpp
@@ -294,7 +294,7 @@ bool QSGSoftwareRenderThread::event(QEvent *e)
                 }
                 rc->invalidate();
                 QCoreApplication::processEvents();
-                QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
+                QCoreApplication::sendPostedEvents(nullptr, QEvent::DeferredDelete);
                 if (wme->destroying)
                     delete wd->animationController;
             }
@@ -456,7 +456,7 @@ void QSGSoftwareRenderThread::sync(bool inExpose)
         // Process deferred deletes now, directly after the sync as deleteLater
         // on the GUI must now also have resulted in SG changes and the delete
         // is a safe operation.
-        QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
+        QCoreApplication::sendPostedEvents(nullptr, QEvent::DeferredDelete);
     }
 
     if (!inExpose) {
diff --git a/src/quick/scenegraph/compressedtexture/qsgcompressedatlastexture.cpp b/src/quick/scenegraph/compressedtexture/qsgcompressedatlastexture.cpp
index 301f2826dc..e868a4380e 100644
--- a/src/quick/scenegraph/compressedtexture/qsgcompressedatlastexture.cpp
+++ b/src/quick/scenegraph/compressedtexture/qsgcompressedatlastexture.cpp
@@ -84,7 +84,7 @@ Texture *Atlas::create(const QByteArray &data, int dataLength, int dataOffset, c
         m_pending_uploads << t;
         return t;
     }
-    return 0;
+    return nullptr;
 }
 
 void Atlas::generateTexture()
@@ -93,7 +93,7 @@ void Atlas::generateTexture()
     funcs->glCompressedTexImage2D(GL_TEXTURE_2D, 0, m_format,
                                   m_size.width(), m_size.height(), 0,
                                   (m_size.width() * m_size.height()) / 2,
-                                  0);
+                                  nullptr);
 }
 
 void Atlas::uploadPendingTexture(int i)
@@ -119,7 +119,7 @@ void Atlas::uploadPendingTexture(int i)
 
 Texture::Texture(Atlas *atlas, const QRect &textureRect, const QByteArray &data, int dataLength, int dataOffset, const QSize &size)
     : QSGAtlasTexture::TextureBase(atlas, textureRect)
-    , m_nonatlas_texture(0)
+    , m_nonatlas_texture(nullptr)
     , m_data(data)
     , m_size(size)
     , m_dataLength(dataLength)
diff --git a/src/quick/scenegraph/coreapi/qsgabstractrenderer.cpp b/src/quick/scenegraph/coreapi/qsgabstractrenderer.cpp
index 3d4ce24716..fddac7ed71 100644
--- a/src/quick/scenegraph/coreapi/qsgabstractrenderer.cpp
+++ b/src/quick/scenegraph/coreapi/qsgabstractrenderer.cpp
@@ -97,7 +97,7 @@ QT_BEGIN_NAMESPACE
     \internal
  */
 QSGAbstractRendererPrivate::QSGAbstractRendererPrivate()
-    : m_root_node(0)
+    : m_root_node(nullptr)
     , m_clear_color(Qt::transparent)
     , m_clear_mode(QSGAbstractRenderer::ClearColorBuffer | QSGAbstractRenderer::ClearDepthBuffer)
 {
diff --git a/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp b/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
index 27b374e47f..ba71551302 100644
--- a/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
+++ b/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
@@ -155,10 +155,10 @@ ShaderManager::Shader *ShaderManager::prepareMaterial(QSGMaterial *material)
             p->bindAttributeLocation(attr[i], i);
     }
     p->bindAttributeLocation("_qt_order", i);
-    context->compileShader(s, material, qsgShaderRewriter_insertZAttributes(s->vertexShader(), profile), 0);
+    context->compileShader(s, material, qsgShaderRewriter_insertZAttributes(s->vertexShader(), profile), nullptr);
     context->initializeShader(s);
     if (!p->isLinked())
-        return 0;
+        return nullptr;
 
     shader = new Shader;
     shader->program = s;
@@ -215,7 +215,7 @@ void ShaderManager::invalidated()
     qDeleteAll(rewrittenShaders);
     rewrittenShaders.clear();
     delete blitProgram;
-    blitProgram = 0;
+    blitProgram = nullptr;
 }
 
 void qsg_dumpShadowRoots(BatchRootInfo *i, int indent)
@@ -280,7 +280,7 @@ Updater::Updater(Renderer *r)
 
 void Updater::updateStates(QSGNode *n)
 {
-    m_current_clip = 0;
+    m_current_clip = nullptr;
 
     m_added = 0;
     m_transformChange = 0;
@@ -347,7 +347,7 @@ void Updater::visitNode(Node *n)
 
     m_added = count;
     m_force_update = force;
-    n->dirtyState = 0;
+    n->dirtyState = nullptr;
 }
 
 void Updater::visitClipNode(Node *n)
@@ -473,7 +473,7 @@ void Updater::visitGeometryNode(Node *n)
 
         if (e->root) {
             BatchRootInfo *info = renderer->batchRootInfo(e->root);
-            while (info != 0) {
+            while (info != nullptr) {
                 info->availableOrders--;
                 if (info->availableOrders < 0) {
                     renderer->m_rebuild |= Renderer::BuildRenderLists;
@@ -481,10 +481,10 @@ void Updater::visitGeometryNode(Node *n)
                     renderer->m_rebuild |= Renderer::BuildRenderListsForTaggedRoots;
                     renderer->m_taggedRoots << e->root;
                 }
-                if (info->parentRoot != 0)
+                if (info->parentRoot != nullptr)
                     info = renderer->batchRootInfo(info->parentRoot);
                 else
-                    info = 0;
+                    info = nullptr;
             }
         } else {
             renderer->m_rebuild |= Renderer::FullRebuild;
@@ -680,12 +680,12 @@ void Batch::invalidate()
     // the batch to do an early out..
     cleanupRemovedElements();
     Element *e = first;
-    first = 0;
-    root = 0;
+    first = nullptr;
+    root = nullptr;
     while (e) {
-        e->batch = 0;
+        e->batch = nullptr;
         Element *n = e->nextInBatch;
-        e->nextInBatch = 0;
+        e->nextInBatch = nullptr;
         e = n;
     }
 }
@@ -756,7 +756,7 @@ Renderer::Renderer(QSGDefaultRenderContext *ctx)
     , m_alphaRenderList(64)
     , m_nextRenderOrder(0)
     , m_partialRebuild(false)
-    , m_partialRebuildRoot(0)
+    , m_partialRebuildRoot(nullptr)
     , m_useDepthBuffer(true)
     , m_opaqueBatches(16)
     , m_alphaBatches(16)
@@ -768,17 +768,17 @@ Renderer::Renderer(QSGDefaultRenderContext *ctx)
     , m_zRange(0)
     , m_renderOrderRebuildLower(-1)
     , m_renderOrderRebuildUpper(-1)
-    , m_currentMaterial(0)
-    , m_currentShader(0)
+    , m_currentMaterial(nullptr)
+    , m_currentShader(nullptr)
     , m_currentStencilValue(0)
     , m_clipMatrixId(0)
-    , m_currentClip(0)
+    , m_currentClip(nullptr)
     , m_currentClipType(NoClip)
     , m_vertexUploadPool(256)
 #ifdef QSG_SEPARATE_INDEX_BUFFER
     , m_indexUploadPool(64)
 #endif
-    , m_vao(0)
+    , m_vao(nullptr)
     , m_visualizeMode(VisualizeNothing)
 {
     initializeOpenGLFunctions();
@@ -916,7 +916,7 @@ void Renderer::unmap(Buffer *buffer, bool isIndexBuf)
     glBufferData(target, buffer->size, buffer->data, m_bufferStrategy);
 
     if (!m_context->hasBrokenIndexBufferObjects() && m_visualizeMode == VisualizeNothing) {
-        buffer->data = 0;
+        buffer->data = nullptr;
     }
 }
 
@@ -944,7 +944,7 @@ void Renderer::removeBatchRootFromParent(Node *childRoot)
 
     Q_ASSERT(parentInfo->subRoots.contains(childRoot));
     parentInfo->subRoots.remove(childRoot);
-    childInfo->parentRoot = 0;
+    childInfo->parentRoot = nullptr;
 }
 
 void Renderer::registerBatchRoot(Node *subRoot, Node *parentRoot)
@@ -1072,7 +1072,7 @@ void Renderer::nodeWasRemoved(Node *node)
         if (e) {
             e->removed = true;
             m_elementsToDelete.add(e);
-            e->node = 0;
+            e->node = nullptr;
             if (e->root) {
                 BatchRootInfo *info = batchRootInfo(e->root);
                 info->availableOrders++;
@@ -1185,7 +1185,7 @@ void Renderer::nodeChanged(QSGNode *node, QSGNode::DirtyState state)
             return;
         }
         if (node == rootNode())
-            nodeWasAdded(node, 0);
+            nodeWasAdded(node, nullptr);
         else
             nodeWasAdded(node, m_nodes.value(node->parent()));
     }
@@ -1438,7 +1438,7 @@ void Renderer::buildRenderListsForTaggedRoots()
         }
     }
     m_partialRebuild = false;
-    m_partialRebuildRoot = 0;
+    m_partialRebuildRoot = nullptr;
     m_taggedRoots.clear();
     m_nextRenderOrder = qMax(m_nextRenderOrder, maxRenderOrder);
 
@@ -2144,7 +2144,7 @@ Renderer::ClipType Renderer::updateStencilClip(const QSGClipNode *clip)
                     glBufferSubData(GL_ARRAY_BUFFER, 0, vertexByteSize, g->vertexData());
                 }
 
-                pointer = 0;
+                pointer = nullptr;
             }
 
             glVertexAttribPointer(0, a->tupleSize, a->type, GL_FALSE, g->sizeOfVertex(), pointer);
@@ -2186,7 +2186,7 @@ void Renderer::updateClip(const QSGClipNode *clipList, const Batch *batch)
         m_currentClip = clipList;
         // updateClip sets another program, so force-reactivate our own
         if (m_currentShader)
-            setActiveShader(0, 0);
+            setActiveShader(nullptr, nullptr);
         glBindBuffer(GL_ARRAY_BUFFER, 0);
         glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
         if (batch->isOpaque)
@@ -2207,8 +2207,8 @@ void Renderer::updateClip(const QSGClipNode *clipList, const Batch *batch)
  */
 void Renderer::setActiveShader(QSGMaterialShader *program, ShaderManager::Shader *shader)
 {
-    const char * const *c = m_currentProgram ? m_currentProgram->attributeNames() : 0;
-    const char * const *n = program ? program->attributeNames() : 0;
+    const char * const *c = m_currentProgram ? m_currentProgram->attributeNames() : nullptr;
+    const char * const *n = program ? program->attributeNames() : nullptr;
 
     int cza = m_currentShader ? m_currentShader->pos_order : -1;
     int nza = shader ? shader->pos_order : -1;
@@ -2219,18 +2219,18 @@ void Renderer::setActiveShader(QSGMaterialShader *program, ShaderManager::Shader
         bool was = c;
         if (cza == i) {
             was = true;
-            c = 0;
+            c = nullptr;
         } else if (c && !c[i]) { // end of the attribute array names
-            c = 0;
+            c = nullptr;
             was = false;
         }
 
         bool is = n;
         if (nza == i) {
             is = true;
-            n = 0;
+            n = nullptr;
         } else if (n && !n[i]) {
-            n = 0;
+            n = nullptr;
             is = false;
         }
 
@@ -2246,7 +2246,7 @@ void Renderer::setActiveShader(QSGMaterialShader *program, ShaderManager::Shader
         m_currentProgram->deactivate();
     m_currentProgram = program;
     m_currentShader = shader;
-    m_currentMaterial = 0;
+    m_currentMaterial = nullptr;
     if (m_currentProgram) {
         m_currentProgram->program()->bind();
         m_currentProgram->activate();
@@ -2298,7 +2298,7 @@ void Renderer::renderMergedBatch(const Batch *batch)
 
     glBindBuffer(GL_ARRAY_BUFFER, batch->vbo.id);
 
-    char *indexBase = 0;
+    char *indexBase = nullptr;
 #ifdef QSG_SEPARATE_INDEX_BUFFER
     const Buffer *indexBuf = &batch->ibo;
 #else
@@ -2394,7 +2394,7 @@ void Renderer::renderUnmergedBatch(const Batch *batch)
     updateClip(gn->clipList(), batch);
 
     glBindBuffer(GL_ARRAY_BUFFER, batch->vbo.id);
-    char *indexBase = 0;
+    char *indexBase = nullptr;
 #ifdef QSG_SEPARATE_INDEX_BUFFER
     const Buffer *indexBuf = &batch->ibo;
 #else
@@ -2500,8 +2500,8 @@ void Renderer::updateLineWidth(QSGGeometry *g)
     else {
         QOpenGLContext *ctx = m_context->openglContext();
         if (!ctx->isOpenGLES() && g->drawingMode() == GL_POINTS) {
-            QOpenGLFunctions_1_0 *gl1funcs = 0;
-            QOpenGLFunctions_3_2_Core *gl3funcs = 0;
+            QOpenGLFunctions_1_0 *gl1funcs = nullptr;
+            QOpenGLFunctions_3_2_Core *gl3funcs = nullptr;
             if (ctx->format().profile() == QSurfaceFormat::CoreProfile)
                 gl3funcs = ctx->versionFunctions<QOpenGLFunctions_3_2_Core>();
             else
@@ -2546,10 +2546,10 @@ void Renderer::renderBatches()
     bindable()->clear(clearMode());
 
     m_current_opacity = 1;
-    m_currentMaterial = 0;
-    m_currentShader = 0;
-    m_currentProgram = 0;
-    m_currentClip = 0;
+    m_currentMaterial = nullptr;
+    m_currentShader = nullptr;
+    m_currentProgram = nullptr;
+    m_currentClip = nullptr;
 
     bool renderOpaque = !debug_noopaque();
     bool renderAlpha = !debug_noalpha();
@@ -2582,8 +2582,8 @@ void Renderer::renderBatches()
     }
 
     if (m_currentShader)
-        setActiveShader(0, 0);
-    updateStencilClip(0);
+        setActiveShader(nullptr, nullptr);
+    updateStencilClip(nullptr);
     glBindBuffer(GL_ARRAY_BUFFER, 0);
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
     glDepthMask(true);
@@ -2597,12 +2597,12 @@ void Renderer::deleteRemovedElements()
     for (int i=0; i<m_opaqueRenderList.size(); ++i) {
         Element **e = m_opaqueRenderList.data() + i;
         if (*e && (*e)->removed)
-            *e = 0;
+            *e = nullptr;
     }
     for (int i=0; i<m_alphaRenderList.size(); ++i) {
         Element **e = m_alphaRenderList.data() + i;
         if (*e && (*e)->removed)
-            *e = 0;
+            *e = nullptr;
     }
 
     for (int i=0; i<m_elementsToDelete.size(); ++i) {
@@ -2815,11 +2815,11 @@ void Renderer::renderRenderNode(Batch *batch)
     Q_ASSERT(batch->first->isRenderNode);
     RenderNodeElement *e = (RenderNodeElement *) batch->first;
 
-    setActiveShader(0, 0);
+    setActiveShader(nullptr, nullptr);
 
     QSGNode *clip = e->renderNode->parent();
     QSGRenderNodePrivate *rd = QSGRenderNodePrivate::get(e->renderNode);
-    rd->m_clip_list = 0;
+    rd->m_clip_list = nullptr;
     while (clip != rootNode()) {
         if (clip->type() == QSGNode::ClipNodeType) {
             rd->m_clip_list = static_cast<QSGClipNode *>(clip);
@@ -2883,8 +2883,8 @@ void Renderer::renderRenderNode(Batch *batch)
 
     e->renderNode->render(&state);
 
-    rd->m_matrix = 0;
-    rd->m_clip_list = 0;
+    rd->m_matrix = nullptr;
+    rd->m_clip_list = nullptr;
 
     if (changes & QSGRenderNode::ViewportState) {
         QRect r = viewportRect();
@@ -2899,7 +2899,7 @@ void Renderer::renderRenderNode(Batch *batch)
 
     if (changes & (QSGRenderNode::StencilState | QSGRenderNode::ScissorState)) {
         glDisable(GL_SCISSOR_TEST);
-        m_currentClip = 0;
+        m_currentClip = nullptr;
         m_currentClipType = NoClip;
     }
 
@@ -3069,7 +3069,7 @@ void Renderer::visualizeChanges(Node *n)
         // This is because many changes don't propegate their dirty state to the
         // parent so the node updater will not unset these states. They are
         // not used for anything so, unsetting it should have no side effects.
-        n->dirtyState = 0;
+        n->dirtyState = nullptr;
     }
 
     SHADOWNODE_TRAVERSE(n) {
diff --git a/src/quick/scenegraph/coreapi/qsgbatchrenderer_p.h b/src/quick/scenegraph/coreapi/qsgbatchrenderer_p.h
index e99af2f4ef..46753e8087 100644
--- a/src/quick/scenegraph/coreapi/qsgbatchrenderer_p.h
+++ b/src/quick/scenegraph/coreapi/qsgbatchrenderer_p.h
@@ -306,10 +306,10 @@ struct Buffer {
 struct Element {
 
     Element()
-        : node(0)
-        , batch(0)
-        , nextInBatch(0)
-        , root(0)
+        : node(nullptr)
+        , batch(nullptr)
+        , nextInBatch(nullptr)
+        , root(nullptr)
         , order(0)
         , boundsComputed(false)
         , boundsOutsideFloatRange(false)
@@ -362,7 +362,7 @@ struct RenderNodeElement : public Element {
 };
 
 struct BatchRootInfo {
-    BatchRootInfo() : parentRoot(0), lastOrder(-1), firstOrder(-1), availableOrders(0) { }
+    BatchRootInfo() : parentRoot(nullptr), lastOrder(-1), firstOrder(-1), availableOrders(0) { }
     QSet<Node *> subRoots;
     Node *parentRoot;
     int lastOrder;
@@ -410,8 +410,8 @@ struct Batch
 
     // pseudo-constructor...
     void init() {
-        first = 0;
-        root = 0;
+        first = nullptr;
+        root = nullptr;
         vertexCount = 0;
         indexCount = 0;
         isOpaque = false;
@@ -463,9 +463,9 @@ struct Node
     void append(Node *child) {
         Q_ASSERT(child);
         Q_ASSERT(!hasChild(child));
-        Q_ASSERT(child->m_parent == 0);
-        Q_ASSERT(child->m_next == 0);
-        Q_ASSERT(child->m_prev == 0);
+        Q_ASSERT(child->m_parent == nullptr);
+        Q_ASSERT(child->m_next == nullptr);
+        Q_ASSERT(child->m_prev == nullptr);
 
         if (!m_child) {
             child->m_next = child;
@@ -486,27 +486,27 @@ struct Node
 
         // only child..
         if (child->m_next == child) {
-            m_child = 0;
+            m_child = nullptr;
         } else {
             if (m_child == child)
                 m_child = child->m_next;
             child->m_next->m_prev = child->m_prev;
             child->m_prev->m_next = child->m_next;
         }
-        child->m_next = 0;
-        child->m_prev = 0;
-        child->setParent(0);
+        child->m_next = nullptr;
+        child->m_prev = nullptr;
+        child->setParent(nullptr);
     }
 
     Node *firstChild() const { return m_child; }
 
     Node *sibling() const {
         Q_ASSERT(m_parent);
-        return m_next == m_parent->m_child ? 0 : m_next;
+        return m_next == m_parent->m_child ? nullptr : m_next;
     }
 
     void setParent(Node *p) {
-        Q_ASSERT(m_parent == 0 || p == 0);
+        Q_ASSERT(m_parent == nullptr || p == nullptr);
         m_parent = p;
     }
 
@@ -591,7 +591,7 @@ public:
         float lastOpacity;
     };
 
-    ShaderManager(QSGDefaultRenderContext *ctx) : visualizeProgram(0), blitProgram(0), context(ctx) { }
+    ShaderManager(QSGDefaultRenderContext *ctx) : visualizeProgram(nullptr), blitProgram(nullptr), context(ctx) { }
     ~ShaderManager() {
         qDeleteAll(rewrittenShaders);
         qDeleteAll(stockShaders);
diff --git a/src/quick/scenegraph/coreapi/qsggeometry.cpp b/src/quick/scenegraph/coreapi/qsggeometry.cpp
index 52366bfc35..226709094d 100644
--- a/src/quick/scenegraph/coreapi/qsggeometry.cpp
+++ b/src/quick/scenegraph/coreapi/qsggeometry.cpp
@@ -430,9 +430,9 @@ QSGGeometry::QSGGeometry(const QSGGeometry::AttributeSet &attributes,
     , m_index_count(0)
     , m_index_type(indexType)
     , m_attributes(attributes)
-    , m_data(0)
+    , m_data(nullptr)
     , m_index_data_offset(-1)
-    , m_server_data(0)
+    , m_server_data(nullptr)
     , m_owns_data(false)
     , m_index_usage_pattern(AlwaysUploadPattern)
     , m_vertex_usage_pattern(AlwaysUploadPattern)
@@ -529,7 +529,7 @@ QSGGeometry::~QSGGeometry()
 void *QSGGeometry::indexData()
 {
     return m_index_data_offset < 0
-            ? 0
+            ? nullptr
             : ((char *) m_data + m_index_data_offset);
 }
 
@@ -541,7 +541,7 @@ void *QSGGeometry::indexData()
 const void *QSGGeometry::indexData() const
 {
     return m_index_data_offset < 0
-            ? 0
+            ? nullptr
             : ((char *) m_data + m_index_data_offset);
 }
 
diff --git a/src/quick/scenegraph/coreapi/qsgmaterial.cpp b/src/quick/scenegraph/coreapi/qsgmaterial.cpp
index 5c28f4c82f..8557de1b1f 100644
--- a/src/quick/scenegraph/coreapi/qsgmaterial.cpp
+++ b/src/quick/scenegraph/coreapi/qsgmaterial.cpp
@@ -641,7 +641,7 @@ static void qt_print_material_count()
  */
 
 QSGMaterial::QSGMaterial()
-    : m_flags(0)
+    : m_flags(nullptr)
 {
     Q_UNUSED(m_reserved);
 #ifndef QT_NO_DEBUG
diff --git a/src/quick/scenegraph/coreapi/qsgnode.cpp b/src/quick/scenegraph/coreapi/qsgnode.cpp
index 550a2182f8..10d4e2a3eb 100644
--- a/src/quick/scenegraph/coreapi/qsgnode.cpp
+++ b/src/quick/scenegraph/coreapi/qsgnode.cpp
@@ -244,15 +244,15 @@ static void qt_print_node_count()
  * Constructs a new node
  */
 QSGNode::QSGNode()
-    : m_parent(0)
+    : m_parent(nullptr)
     , m_type(BasicNodeType)
-    , m_firstChild(0)
-    , m_lastChild(0)
-    , m_nextSibling(0)
-    , m_previousSibling(0)
+    , m_firstChild(nullptr)
+    , m_lastChild(nullptr)
+    , m_nextSibling(nullptr)
+    , m_previousSibling(nullptr)
     , m_subtreeRenderableCount(0)
     , m_nodeFlags(OwnedByParent)
-    , m_dirtyState(0)
+    , m_dirtyState(nullptr)
 {
     init();
 }
@@ -263,15 +263,15 @@ QSGNode::QSGNode()
  * \internal
  */
 QSGNode::QSGNode(NodeType type)
-    : m_parent(0)
+    : m_parent(nullptr)
     , m_type(type)
-    , m_firstChild(0)
-    , m_lastChild(0)
-    , m_nextSibling(0)
-    , m_previousSibling(0)
+    , m_firstChild(nullptr)
+    , m_lastChild(nullptr)
+    , m_nextSibling(nullptr)
+    , m_previousSibling(nullptr)
     , m_subtreeRenderableCount(type == GeometryNodeType || type == RenderNodeType ? 1 : 0)
     , m_nodeFlags(OwnedByParent)
-    , m_dirtyState(0)
+    , m_dirtyState(nullptr)
 {
     init();
 }
@@ -282,15 +282,15 @@ QSGNode::QSGNode(NodeType type)
  * \internal
  */
 QSGNode::QSGNode(QSGNodePrivate &dd, NodeType type)
-    : m_parent(0)
+    : m_parent(nullptr)
     , m_type(type)
-    , m_firstChild(0)
-    , m_lastChild(0)
-    , m_nextSibling(0)
-    , m_previousSibling(0)
+    , m_firstChild(nullptr)
+    , m_lastChild(nullptr)
+    , m_nextSibling(nullptr)
+    , m_previousSibling(nullptr)
     , m_subtreeRenderableCount(type == GeometryNodeType || type == RenderNodeType ? 1 : 0)
     , m_nodeFlags(OwnedByParent)
-    , m_dirtyState(0)
+    , m_dirtyState(nullptr)
     , d_ptr(&dd)
 {
     init();
@@ -388,17 +388,17 @@ void QSGNode::destroy()
 {
     if (m_parent) {
         m_parent->removeChildNode(this);
-        Q_ASSERT(m_parent == 0);
+        Q_ASSERT(m_parent == nullptr);
     }
     while (m_firstChild) {
         QSGNode *child = m_firstChild;
         removeChildNode(child);
-        Q_ASSERT(child->m_parent == 0);
+        Q_ASSERT(child->m_parent == nullptr);
         if (child->flags() & OwnedByParent)
             delete child;
     }
 
-    Q_ASSERT(m_firstChild == 0 && m_lastChild == 0);
+    Q_ASSERT(m_firstChild == nullptr && m_lastChild == nullptr);
 }
 
 
@@ -557,11 +557,11 @@ void QSGNode::removeChildNode(QSGNode *node)
         next->m_previousSibling = previous;
     else
         m_lastChild = previous;
-    node->m_previousSibling = 0;
-    node->m_nextSibling = 0;
+    node->m_previousSibling = nullptr;
+    node->m_nextSibling = nullptr;
 
     node->markDirty(DirtyNodeRemoved);
-    node->m_parent = 0;
+    node->m_parent = nullptr;
 }
 
 
@@ -574,13 +574,13 @@ void QSGNode::removeAllChildNodes()
     while (m_firstChild) {
         QSGNode *node = m_firstChild;
         m_firstChild = node->m_nextSibling;
-        node->m_nextSibling = 0;
+        node->m_nextSibling = nullptr;
         if (m_firstChild)
-            m_firstChild->m_previousSibling = 0;
+            m_firstChild->m_previousSibling = nullptr;
         else
-            m_lastChild = 0;
+            m_lastChild = nullptr;
         node->markDirty(DirtyNodeRemoved);
-        node->m_parent = 0;
+        node->m_parent = nullptr;
     }
 }
 
@@ -714,9 +714,9 @@ void qsgnode_set_description(QSGNode *node, const QString &description)
  */
 QSGBasicGeometryNode::QSGBasicGeometryNode(NodeType type)
     : QSGNode(type)
-    , m_geometry(0)
-    , m_matrix(0)
-    , m_clip_list(0)
+    , m_geometry(nullptr)
+    , m_matrix(nullptr)
+    , m_clip_list(nullptr)
 {
 }
 
@@ -726,9 +726,9 @@ QSGBasicGeometryNode::QSGBasicGeometryNode(NodeType type)
  */
 QSGBasicGeometryNode::QSGBasicGeometryNode(QSGBasicGeometryNodePrivate &dd, NodeType type)
     : QSGNode(dd, type)
-    , m_geometry(0)
-    , m_matrix(0)
-    , m_clip_list(0)
+    , m_geometry(nullptr)
+    , m_matrix(nullptr)
+    , m_clip_list(nullptr)
 {
 }
 
@@ -871,8 +871,8 @@ void QSGBasicGeometryNode::setGeometry(QSGGeometry *geometry)
 QSGGeometryNode::QSGGeometryNode()
     : QSGBasicGeometryNode(GeometryNodeType)
     , m_render_order(0)
-    , m_material(0)
-    , m_opaque_material(0)
+    , m_material(nullptr)
+    , m_opaque_material(nullptr)
     , m_opacity(1)
 {
 }
@@ -884,8 +884,8 @@ QSGGeometryNode::QSGGeometryNode()
 QSGGeometryNode::QSGGeometryNode(QSGGeometryNodePrivate &dd)
     : QSGBasicGeometryNode(dd, GeometryNodeType)
     , m_render_order(0)
-    , m_material(0)
-    , m_opaque_material(0)
+    , m_material(nullptr)
+    , m_opaque_material(nullptr)
     , m_opacity(1)
 {
 }
@@ -979,7 +979,7 @@ void QSGGeometryNode::setMaterial(QSGMaterial *material)
         delete m_material;
     m_material = material;
 #ifndef QT_NO_DEBUG
-    if (m_material != 0 && m_opaque_material == m_material)
+    if (m_material != nullptr && m_opaque_material == m_material)
         qWarning("QSGGeometryNode: using same material for both opaque and translucent");
 #endif
     markDirty(DirtyMaterial);
@@ -1010,7 +1010,7 @@ void QSGGeometryNode::setOpaqueMaterial(QSGMaterial *material)
         delete m_opaque_material;
     m_opaque_material = material;
 #ifndef QT_NO_DEBUG
-    if (m_opaque_material != 0 && m_opaque_material == m_material)
+    if (m_opaque_material != nullptr && m_opaque_material == m_material)
         qWarning("QSGGeometryNode: using same material for both opaque and translucent");
 #endif
 
@@ -1274,7 +1274,7 @@ QSGRootNode::QSGRootNode()
 QSGRootNode::~QSGRootNode()
 {
     while (!m_renderers.isEmpty())
-        m_renderers.constLast()->setRootNode(0);
+        m_renderers.constLast()->setRootNode(nullptr);
     destroy(); // Must call destroy() here because markDirty() casts this to QSGRootNode.
 }
 
diff --git a/src/quick/scenegraph/coreapi/qsgnodeupdater.cpp b/src/quick/scenegraph/coreapi/qsgnodeupdater.cpp
index d6d533307e..8bc9ded594 100644
--- a/src/quick/scenegraph/coreapi/qsgnodeupdater.cpp
+++ b/src/quick/scenegraph/coreapi/qsgnodeupdater.cpp
@@ -48,7 +48,7 @@ QT_BEGIN_NAMESPACE
 QSGNodeUpdater::QSGNodeUpdater()
     : m_combined_matrix_stack(64)
     , m_opacity_stack(64)
-    , m_current_clip(0)
+    , m_current_clip(nullptr)
     , m_force_update(0)
 {
     m_opacity_stack.add(1);
@@ -60,7 +60,7 @@ QSGNodeUpdater::~QSGNodeUpdater()
 
 void QSGNodeUpdater::updateStates(QSGNode *n)
 {
-    m_current_clip = 0;
+    m_current_clip = nullptr;
     m_force_update = 0;
 
     Q_ASSERT(m_opacity_stack.size() == 1); // The one we added in the constructr...
@@ -82,7 +82,7 @@ void QSGNodeUpdater::updateStates(QSGNode *n)
 
 bool QSGNodeUpdater::isNodeBlocked(QSGNode *node, QSGNode *root) const
 {
-    while (node != root && node != 0) {
+    while (node != root && node != nullptr) {
         if (node->isSubtreeBlocked())
             return true;
         node = node->parent();
diff --git a/src/quick/scenegraph/coreapi/qsgrenderer.cpp b/src/quick/scenegraph/coreapi/qsgrenderer.cpp
index 3ae79a933f..e1ba001d2d 100644
--- a/src/quick/scenegraph/coreapi/qsgrenderer.cpp
+++ b/src/quick/scenegraph/coreapi/qsgrenderer.cpp
@@ -132,8 +132,8 @@ QSGRenderer::QSGRenderer(QSGRenderContext *context)
     , m_current_determinant(1)
     , m_device_pixel_ratio(1)
     , m_context(context)
-    , m_node_updater(0)
-    , m_bindable(0)
+    , m_node_updater(nullptr)
+    , m_bindable(nullptr)
     , m_changed_emitted(false)
     , m_is_rendering(false)
     , m_is_preprocessing(false)
@@ -143,7 +143,7 @@ QSGRenderer::QSGRenderer(QSGRenderContext *context)
 
 QSGRenderer::~QSGRenderer()
 {
-    setRootNode(0);
+    setRootNode(nullptr);
     delete m_node_updater;
 }
 
@@ -249,7 +249,7 @@ void QSGRenderer::renderScene(const QSGBindable &bindable)
 
     m_is_rendering = false;
     m_changed_emitted = false;
-    m_bindable = 0;
+    m_bindable = nullptr;
 
     qCDebug(QSG_LOG_TIME_RENDERER,
             "time in renderer: total=%dms, preprocess=%d, updates=%d, binding=%d, rendering=%d",
diff --git a/src/quick/scenegraph/coreapi/qsgrendernode.cpp b/src/quick/scenegraph/coreapi/qsgrendernode.cpp
index 5e259f2083..df3fa16a32 100644
--- a/src/quick/scenegraph/coreapi/qsgrendernode.cpp
+++ b/src/quick/scenegraph/coreapi/qsgrendernode.cpp
@@ -74,8 +74,8 @@ QSGRenderNode::~QSGRenderNode()
 }
 
 QSGRenderNodePrivate::QSGRenderNodePrivate()
-    : m_matrix(0)
-    , m_clip_list(0)
+    : m_matrix(nullptr)
+    , m_clip_list(nullptr)
     , m_opacity(1)
 {
 }
@@ -119,7 +119,7 @@ QSGRenderNodePrivate::QSGRenderNodePrivate()
   */
 QSGRenderNode::StateFlags QSGRenderNode::changedStates() const
 {
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -267,7 +267,7 @@ void QSGRenderNode::releaseResources()
  */
 QSGRenderNode::RenderingFlags QSGRenderNode::flags() const
 {
-    return 0;
+    return nullptr;
 }
 
 /*!
diff --git a/src/quick/scenegraph/qsgadaptationlayer_p.h b/src/quick/scenegraph/qsgadaptationlayer_p.h
index ba146b884f..f1d8493e85 100644
--- a/src/quick/scenegraph/qsgadaptationlayer_p.h
+++ b/src/quick/scenegraph/qsgadaptationlayer_p.h
@@ -373,7 +373,7 @@ public:
         HighQualitySubPixelAntialiasing
     };
 
-    QSGGlyphNode() : m_ownerElement(0) {}
+    QSGGlyphNode() : m_ownerElement(nullptr) {}
 
     virtual void setGlyphs(const QPointF &position, const QGlyphRun &glyphs) = 0;
     virtual void setColor(const QColor &color) = 0;
@@ -484,7 +484,7 @@ protected:
         QPainterPath path;
         quint32 ref;
 
-        GlyphData() : texture(0), ref(0) { }
+        GlyphData() : texture(nullptr), ref(0) { }
     };
 
     virtual void requestGlyphs(const QSet<glyph_t> &glyphs) = 0;
diff --git a/src/quick/scenegraph/qsgbasicglyphnode.cpp b/src/quick/scenegraph/qsgbasicglyphnode.cpp
index 38f650a82c..4559b7951c 100644
--- a/src/quick/scenegraph/qsgbasicglyphnode.cpp
+++ b/src/quick/scenegraph/qsgbasicglyphnode.cpp
@@ -44,7 +44,7 @@ QT_BEGIN_NAMESPACE
 
 QSGBasicGlyphNode::QSGBasicGlyphNode()
     : m_style(QQuickText::Normal)
-    , m_material(0)
+    , m_material(nullptr)
     , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 0)
 {
     m_geometry.setDrawingMode(QSGGeometry::DrawTriangles);
@@ -59,7 +59,7 @@ QSGBasicGlyphNode::~QSGBasicGlyphNode()
 void QSGBasicGlyphNode::setColor(const QColor &color)
 {
     m_color = color;
-    if (m_material != 0) {
+    if (m_material != nullptr) {
         setMaterialColor(color);
         markDirty(DirtyMaterial);
     }
@@ -67,7 +67,7 @@ void QSGBasicGlyphNode::setColor(const QColor &color)
 
 void QSGBasicGlyphNode::setGlyphs(const QPointF &position, const QGlyphRun &glyphs)
 {
-    if (m_material != 0)
+    if (m_material != nullptr)
         delete m_material;
 
     m_position = position;
diff --git a/src/quick/scenegraph/qsgcontext.cpp b/src/quick/scenegraph/qsgcontext.cpp
index a6819b338d..d9ed25c099 100644
--- a/src/quick/scenegraph/qsgcontext.cpp
+++ b/src/quick/scenegraph/qsgcontext.cpp
@@ -372,7 +372,7 @@ void QSGRenderContext::registerFontengineForCleanup(QFontEngine *engine)
 QSGTexture *QSGRenderContext::textureForFactory(QQuickTextureFactory *factory, QQuickWindow *window)
 {
     if (!factory)
-        return 0;
+        return nullptr;
 
     m_mutex.lock();
     QSGTexture *texture = m_textures.value(factory);
diff --git a/src/quick/scenegraph/qsgcontext_p.h b/src/quick/scenegraph/qsgcontext_p.h
index da0adcd5d7..00c23be60c 100644
--- a/src/quick/scenegraph/qsgcontext_p.h
+++ b/src/quick/scenegraph/qsgcontext_p.h
@@ -110,7 +110,7 @@ public:
         MsaaAntialiasing
     };
 
-    explicit QSGContext(QObject *parent = 0);
+    explicit QSGContext(QObject *parent = nullptr);
     virtual ~QSGContext();
 
     virtual void renderContextInitialized(QSGRenderContext *renderContext);
diff --git a/src/quick/scenegraph/qsgcontextplugin.cpp b/src/quick/scenegraph/qsgcontextplugin.cpp
index 634a492aa3..a697c315a3 100644
--- a/src/quick/scenegraph/qsgcontextplugin.cpp
+++ b/src/quick/scenegraph/qsgcontextplugin.cpp
@@ -87,7 +87,7 @@ struct QSGAdaptationBackendData
 QSGAdaptationBackendData::QSGAdaptationBackendData()
     : tried(false)
     , factory(nullptr)
-    , flags(0)
+    , flags(nullptr)
 {
     // Fill in the table with the built-in adaptations.
     builtIns.append(new QSGSoftwareAdaptation);
@@ -209,7 +209,7 @@ QQuickTextureFactory *QSGContext::createTextureFactoryFromImage(const QImage &im
     QSGAdaptationBackendData *backendData = contextFactory();
     if (backendData->factory)
         return backendData->factory->createTextureFactoryFromImage(image);
-    return 0;
+    return nullptr;
 }
 
 
@@ -223,7 +223,7 @@ QSGRenderLoop *QSGContext::createWindowManager()
     QSGAdaptationBackendData *backendData = contextFactory();
     if (backendData->factory)
         return backendData->factory->createWindowManager();
-    return 0;
+    return nullptr;
 }
 
 void QSGContext::setBackend(const QString &backend)
diff --git a/src/quick/scenegraph/qsgcontextplugin_p.h b/src/quick/scenegraph/qsgcontextplugin_p.h
index 02d4b79b76..d37d4df270 100644
--- a/src/quick/scenegraph/qsgcontextplugin_p.h
+++ b/src/quick/scenegraph/qsgcontextplugin_p.h
@@ -87,13 +87,13 @@ class Q_QUICK_PRIVATE_EXPORT QSGContextPlugin : public QObject, public QSGContex
     Q_OBJECT
     Q_INTERFACES(QSGContextFactoryInterface:QFactoryInterface)
 public:
-    explicit QSGContextPlugin(QObject *parent = 0);
+    explicit QSGContextPlugin(QObject *parent = nullptr);
     virtual ~QSGContextPlugin();
 
     QStringList keys() const override = 0;
 
-    QQuickTextureFactory *createTextureFactoryFromImage(const QImage &) override { return 0; }
-    QSGRenderLoop *createWindowManager() override { return 0; }
+    QQuickTextureFactory *createTextureFactoryFromImage(const QImage &) override { return nullptr; }
+    QSGRenderLoop *createWindowManager() override { return nullptr; }
 };
 
 QT_END_NAMESPACE
diff --git a/src/quick/scenegraph/qsgdefaultcontext_p.h b/src/quick/scenegraph/qsgdefaultcontext_p.h
index b2964bf403..6dfd197cf6 100644
--- a/src/quick/scenegraph/qsgdefaultcontext_p.h
+++ b/src/quick/scenegraph/qsgdefaultcontext_p.h
@@ -60,7 +60,7 @@ QT_BEGIN_NAMESPACE
 class Q_QUICK_PRIVATE_EXPORT QSGDefaultContext : public QSGContext, public QSGRendererInterface
 {
 public:
-    QSGDefaultContext(QObject *parent = 0);
+    QSGDefaultContext(QObject *parent = nullptr);
     ~QSGDefaultContext();
 
     void renderContextInitialized(QSGRenderContext *renderContext) override;
diff --git a/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp b/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp
index 7789ef8fb1..ef189ba461 100644
--- a/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp
+++ b/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp
@@ -63,12 +63,12 @@ QSGDefaultDistanceFieldGlyphCache::QSGDefaultDistanceFieldGlyphCache(QOpenGLCont
     : QSGDistanceFieldGlyphCache(c, font)
     , m_maxTextureSize(0)
     , m_maxTextureCount(3)
-    , m_blitProgram(0)
+    , m_blitProgram(nullptr)
     , m_blitBuffer(QOpenGLBuffer::VertexBuffer)
-    , m_fboGuard(0)
+    , m_fboGuard(nullptr)
     , m_funcs(c->functions())
 #if !defined(QT_OPENGL_ES_2)
-    , m_coreFuncs(0)
+    , m_coreFuncs(nullptr)
 #endif
 {
     if (Q_LIKELY(m_blitBuffer.create())) {
@@ -89,7 +89,7 @@ QSGDefaultDistanceFieldGlyphCache::~QSGDefaultDistanceFieldGlyphCache()
     for (int i = 0; i < m_textures.count(); ++i)
         m_funcs->glDeleteTextures(1, &m_textures[i].texture);
 
-    if (m_fboGuard != 0)
+    if (m_fboGuard != nullptr)
         m_fboGuard->free();
 
     delete m_blitProgram;
@@ -400,7 +400,7 @@ void QSGDefaultDistanceFieldGlyphCache::resizeTexture(TextureInfo *texInfo, int
         m_funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
 #endif
     m_funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, oldWidth, oldHeight, 0,
-                          GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+                          GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
     m_funcs->glBindTexture(GL_TEXTURE_2D, 0);
     m_funcs->glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
                                     GL_TEXTURE_2D, tmp_texture, 0);
diff --git a/src/quick/scenegraph/qsgdefaultglyphnode_p.cpp b/src/quick/scenegraph/qsgdefaultglyphnode_p.cpp
index 0169f097bc..dc473a6640 100644
--- a/src/quick/scenegraph/qsgdefaultglyphnode_p.cpp
+++ b/src/quick/scenegraph/qsgdefaultglyphnode_p.cpp
@@ -107,7 +107,7 @@ protected:
 
 char const *const *QSGTextMaskShader::attributeNames() const
 {
-    static char const *const attr[] = { "vCoord", "tCoord", 0 };
+    static char const *const attr[] = { "vCoord", "tCoord", nullptr };
     return attr;
 }
 
@@ -141,13 +141,13 @@ void QSGTextMaskShader::updateState(const RenderState &state, QSGMaterial *newEf
 {
     QSGTextMaskMaterial *material = static_cast<QSGTextMaskMaterial *>(newEffect);
     QSGTextMaskMaterial *oldMaterial = static_cast<QSGTextMaskMaterial *>(oldEffect);
-    Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type());
+    Q_ASSERT(oldEffect == nullptr || newEffect->type() == oldEffect->type());
     bool updated = material->ensureUpToDate();
     Q_ASSERT(material->texture());
 
-    Q_ASSERT(oldMaterial == 0 || oldMaterial->texture());
+    Q_ASSERT(oldMaterial == nullptr || oldMaterial->texture());
     if (updated
-            || oldMaterial == 0
+            || oldMaterial == nullptr
             || oldMaterial->texture()->textureId() != material->texture()->textureId()) {
         program()->setUniformValue(m_textureScale_id, QVector2D(1.0 / material->cacheTextureWidth(),
                                                                1.0 / material->cacheTextureHeight()));
@@ -190,7 +190,7 @@ void QSG8BitTextMaskShader::updateState(const RenderState &state, QSGMaterial *n
     QSGTextMaskMaterial *material = static_cast<QSGTextMaskMaterial *>(newEffect);
     QSGTextMaskMaterial *oldMaterial = static_cast<QSGTextMaskMaterial *>(oldEffect);
 
-    if (oldMaterial == 0 || material->color() != oldMaterial->color() || state.isOpacityDirty()) {
+    if (oldMaterial == nullptr || material->color() != oldMaterial->color() || state.isOpacityDirty()) {
         QVector4D color = qsg_premultiply(material->color(), state.opacity());
         program()->setUniformValue(m_color_id, color);
     }
@@ -282,7 +282,7 @@ void QSG24BitTextMaskShader::updateState(const RenderState &state, QSGMaterial *
     QSGTextMaskMaterial *material = static_cast<QSGTextMaskMaterial *>(newEffect);
     QSGTextMaskMaterial *oldMaterial = static_cast<QSGTextMaskMaterial *>(oldEffect);
 
-    if (oldMaterial == 0 || material->color() != oldMaterial->color() || state.isOpacityDirty()) {
+    if (oldMaterial == nullptr || material->color() != oldMaterial->color() || state.isOpacityDirty()) {
         QVector4D color = material->color();
         if (useSRGB())
             color = qt_sRGB_to_linear_RGB(color);
@@ -346,20 +346,20 @@ void QSGStyledTextShader::updateState(const RenderState &state,
                                       QSGMaterial *newEffect,
                                       QSGMaterial *oldEffect)
 {
-    Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type());
+    Q_ASSERT(oldEffect == nullptr || newEffect->type() == oldEffect->type());
 
     QSGStyledTextMaterial *material = static_cast<QSGStyledTextMaterial *>(newEffect);
     QSGStyledTextMaterial *oldMaterial = static_cast<QSGStyledTextMaterial *>(oldEffect);
 
-    if (oldMaterial == 0 || oldMaterial->styleShift() != material->styleShift())
+    if (oldMaterial == nullptr || oldMaterial->styleShift() != material->styleShift())
         program()->setUniformValue(m_shift_id, material->styleShift());
 
-    if (oldMaterial == 0 || material->color() != oldMaterial->color() || state.isOpacityDirty()) {
+    if (oldMaterial == nullptr || material->color() != oldMaterial->color() || state.isOpacityDirty()) {
         QVector4D color = qsg_premultiply(material->color(), state.opacity());
         program()->setUniformValue(m_color_id, color);
     }
 
-    if (oldMaterial == 0 || material->styleColor() != oldMaterial->styleColor() || state.isOpacityDirty()) {
+    if (oldMaterial == nullptr || material->styleColor() != oldMaterial->styleColor() || state.isOpacityDirty()) {
         QVector4D styleColor = qsg_premultiply(material->styleColor(), state.opacity());
         program()->setUniformValue(m_styleColor_id, styleColor);
     }
@@ -367,9 +367,9 @@ void QSGStyledTextShader::updateState(const RenderState &state,
     bool updated = material->ensureUpToDate();
     Q_ASSERT(material->texture());
 
-    Q_ASSERT(oldMaterial == 0 || oldMaterial->texture());
+    Q_ASSERT(oldMaterial == nullptr || oldMaterial->texture());
     if (updated
-            || oldMaterial == 0
+            || oldMaterial == nullptr
             || oldMaterial->texture()->textureId() != material->texture()->textureId()) {
         program()->setUniformValue(m_textureScale_id, QVector2D(1.0 / material->cacheTextureWidth(),
                                                                 1.0 / material->cacheTextureHeight()));
@@ -400,8 +400,8 @@ public:
 };
 
 QSGTextMaskMaterial::QSGTextMaskMaterial(const QRawFont &font, QFontEngine::GlyphFormat glyphFormat)
-    : m_texture(0)
-    , m_glyphCache(0)
+    : m_texture(nullptr)
+    , m_glyphCache(nullptr)
     , m_font(font)
 {
     init(glyphFormat);
@@ -419,7 +419,7 @@ void QSGTextMaskMaterial::init(QFontEngine::GlyphFormat glyphFormat)
     setFlag(Blending, true);
 
     QOpenGLContext *ctx = const_cast<QOpenGLContext *>(QOpenGLContext::currentContext());
-    Q_ASSERT(ctx != 0);
+    Q_ASSERT(ctx != nullptr);
 
     // The following piece of code will read/write to the font engine's caches,
     // potentially from different threads. However, this is safe because this
diff --git a/src/quick/scenegraph/qsgdefaultinternalimagenode.cpp b/src/quick/scenegraph/qsgdefaultinternalimagenode.cpp
index a5a6da06a7..7e6d6d0d07 100644
--- a/src/quick/scenegraph/qsgdefaultinternalimagenode.cpp
+++ b/src/quick/scenegraph/qsgdefaultinternalimagenode.cpp
@@ -91,7 +91,7 @@ SmoothTextureMaterialShader::SmoothTextureMaterialShader()
 
 void SmoothTextureMaterialShader::updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect)
 {
-    if (oldEffect == 0) {
+    if (oldEffect == nullptr) {
         // The viewport is constant, so set the pixel size uniform only once.
         QRect r = state.viewportRect();
         program()->setUniformValue(m_pixelSizeLoc, 2.0f / r.width(), 2.0f / r.height());
@@ -106,7 +106,7 @@ char const *const *SmoothTextureMaterialShader::attributeNames() const
         "multiTexCoord",
         "vertexOffset",
         "texCoordOffset",
-        0
+        nullptr
     };
     return attributes;
 }
@@ -171,7 +171,7 @@ void QSGDefaultInternalImageNode::updateMaterialAntialiasing()
 {
     if (m_antialiasing) {
         setMaterial(&m_smoothMaterial);
-        setOpaqueMaterial(0);
+        setOpaqueMaterial(nullptr);
     } else {
         setMaterial(&m_materialO);
         setOpaqueMaterial(&m_material);
diff --git a/src/quick/scenegraph/qsgdefaultinternalrectanglenode.cpp b/src/quick/scenegraph/qsgdefaultinternalrectanglenode.cpp
index e52dcaad52..ef8a13931e 100644
--- a/src/quick/scenegraph/qsgdefaultinternalrectanglenode.cpp
+++ b/src/quick/scenegraph/qsgdefaultinternalrectanglenode.cpp
@@ -81,7 +81,7 @@ void SmoothColorMaterialShader::updateState(const RenderState &state, QSGMateria
     if (state.isMatrixDirty())
         program()->setUniformValue(m_matrixLoc, state.combinedMatrix());
 
-    if (oldEffect == 0) {
+    if (oldEffect == nullptr) {
         // The viewport is constant, so set the pixel size uniform only once.
         QRect r = state.viewportRect();
         program()->setUniformValue(m_pixelSizeLoc, 2.0f / r.width(), 2.0f / r.height());
@@ -94,7 +94,7 @@ char const *const *SmoothColorMaterialShader::attributeNames() const
         "vertex",
         "vertexColor",
         "vertexOffset",
-        0
+        nullptr
     };
     return attributes;
 }
diff --git a/src/quick/scenegraph/qsgdefaultlayer.cpp b/src/quick/scenegraph/qsgdefaultlayer.cpp
index cd9c4a9a90..b2b123912f 100644
--- a/src/quick/scenegraph/qsgdefaultlayer.cpp
+++ b/src/quick/scenegraph/qsgdefaultlayer.cpp
@@ -90,15 +90,15 @@ namespace
 
 QSGDefaultLayer::QSGDefaultLayer(QSGRenderContext *context)
     : QSGLayer()
-    , m_item(0)
+    , m_item(nullptr)
     , m_device_pixel_ratio(1)
     , m_format(GL_RGBA)
-    , m_renderer(0)
-    , m_fbo(0)
-    , m_secondaryFbo(0)
+    , m_renderer(nullptr)
+    , m_fbo(nullptr)
+    , m_secondaryFbo(nullptr)
     , m_transparentTexture(0)
 #ifdef QSG_DEBUG_FBO_OVERLAY
-    , m_debugOverlay(0)
+    , m_debugOverlay(nullptr)
 #endif
     , m_samples(0)
     , m_mipmap(false)
@@ -122,13 +122,13 @@ QSGDefaultLayer::~QSGDefaultLayer()
 void QSGDefaultLayer::invalidated()
 {
     delete m_renderer;
-    m_renderer = 0;
+    m_renderer = nullptr;
     delete m_fbo;
     delete m_secondaryFbo;
-    m_fbo = m_secondaryFbo = 0;
+    m_fbo = m_secondaryFbo = nullptr;
 #ifdef QSG_DEBUG_FBO_OVERLAY
     delete m_debugOverlay;
-    m_debugOverlay = 0;
+    m_debugOverlay = nullptr;
 #endif
     if (m_transparentTexture) {
         QOpenGLContext::currentContext()->functions()->glDeleteTextures(1, &m_transparentTexture);
@@ -204,7 +204,7 @@ void QSGDefaultLayer::setItem(QSGNode *item)
     if (m_live && !m_item) {
         delete m_fbo;
         delete m_secondaryFbo;
-        m_fbo = m_secondaryFbo = 0;
+        m_fbo = m_secondaryFbo = nullptr;
         m_depthStencilBuffer.clear();
     }
 
@@ -228,7 +228,7 @@ void QSGDefaultLayer::setSize(const QSize &size)
     if (m_live && m_size.isNull()) {
         delete m_fbo;
         delete m_secondaryFbo;
-        m_fbo = m_secondaryFbo = 0;
+        m_fbo = m_secondaryFbo = nullptr;
         m_depthStencilBuffer.clear();
     }
 
@@ -252,7 +252,7 @@ void QSGDefaultLayer::setLive(bool live)
     if (m_live && (!m_item || m_size.isNull())) {
         delete m_fbo;
         delete m_secondaryFbo;
-        m_fbo = m_secondaryFbo = 0;
+        m_fbo = m_secondaryFbo = nullptr;
         m_depthStencilBuffer.clear();
     }
 
@@ -295,7 +295,7 @@ void QSGDefaultLayer::grab()
     if (!m_item || m_size.isNull()) {
         delete m_fbo;
         delete m_secondaryFbo;
-        m_fbo = m_secondaryFbo = 0;
+        m_fbo = m_secondaryFbo = nullptr;
         m_depthStencilBuffer.clear();
         m_dirtyTexture = false;
         return;
@@ -362,7 +362,7 @@ void QSGDefaultLayer::grab()
                 delete m_fbo;
                 delete m_secondaryFbo;
                 m_fbo = new QOpenGLFramebufferObject(m_size, format);
-                m_secondaryFbo = 0;
+                m_secondaryFbo = nullptr;
                 funcs->glBindTexture(GL_TEXTURE_2D, m_fbo->texture());
                 updateBindOptions(true);
                 m_depthStencilBuffer = m_context->depthStencilBufferForFbo(m_fbo);
diff --git a/src/quick/scenegraph/qsgdefaultrendercontext.cpp b/src/quick/scenegraph/qsgdefaultrendercontext.cpp
index 12357f12c7..7882496062 100644
--- a/src/quick/scenegraph/qsgdefaultrendercontext.cpp
+++ b/src/quick/scenegraph/qsgdefaultrendercontext.cpp
@@ -157,14 +157,14 @@ void QSGDefaultRenderContext::invalidate()
     m_fontEnginesToClean.clear();
 
     delete m_depthStencilManager;
-    m_depthStencilManager = 0;
+    m_depthStencilManager = nullptr;
 
     qDeleteAll(m_glyphCaches);
     m_glyphCaches.clear();
 
     if (m_gl->property(QSG_RENDERCONTEXT_PROPERTY) == QVariant::fromValue(this))
         m_gl->setProperty(QSG_RENDERCONTEXT_PROPERTY, QVariant());
-    m_gl = 0;
+    m_gl = nullptr;
 
     if (m_sg)
         m_sg->renderContextInvalidated(this);
@@ -211,7 +211,7 @@ QSharedPointer<QSGDepthStencilBuffer> QSGDefaultRenderContext::depthStencilBuffe
 QSGDepthStencilBufferManager *QSGDefaultRenderContext::depthStencilBufferManager()
 {
     if (!m_gl)
-        return 0;
+        return nullptr;
     if (!m_depthStencilManager)
         m_depthStencilManager = new QSGDepthStencilBufferManager(m_gl);
     return m_depthStencilManager;
diff --git a/src/quick/scenegraph/qsgdefaultrendercontext_p.h b/src/quick/scenegraph/qsgdefaultrendercontext_p.h
index 68329256f1..eb62586a94 100644
--- a/src/quick/scenegraph/qsgdefaultrendercontext_p.h
+++ b/src/quick/scenegraph/qsgdefaultrendercontext_p.h
@@ -86,7 +86,7 @@ public:
     QSGRenderer *createRenderer() override;
     QSGTexture *compressedTextureForFactory(const QSGCompressedTextureFactory *factory) const override;
 
-    virtual void compileShader(QSGMaterialShader *shader, QSGMaterial *material, const char *vertexCode = 0, const char *fragmentCode = 0);
+    virtual void compileShader(QSGMaterialShader *shader, QSGMaterial *material, const char *vertexCode = nullptr, const char *fragmentCode = nullptr);
     virtual void initializeShader(QSGMaterialShader *shader);
 
     void setAttachToGraphicsContext(bool attach) override;
diff --git a/src/quick/scenegraph/qsgdefaultspritenode.cpp b/src/quick/scenegraph/qsgdefaultspritenode.cpp
index 7fe6048d59..c9a9625f2b 100644
--- a/src/quick/scenegraph/qsgdefaultspritenode.cpp
+++ b/src/quick/scenegraph/qsgdefaultspritenode.cpp
@@ -82,7 +82,7 @@ public:
 };
 
 QQuickSpriteMaterial::QQuickSpriteMaterial()
-    : texture(0)
+    : texture(nullptr)
     , animT(0.0f)
     , animX1(0.0f)
     , animY1(0.0f)
@@ -133,7 +133,7 @@ public:
         static const char *attr[] = {
            "vPos",
            "vTex",
-            0
+            nullptr
         };
         return attr;
     }
diff --git a/src/quick/scenegraph/qsgdistancefieldglyphnode.cpp b/src/quick/scenegraph/qsgdistancefieldglyphnode.cpp
index 32eda2d142..ae6336718e 100644
--- a/src/quick/scenegraph/qsgdistancefieldglyphnode.cpp
+++ b/src/quick/scenegraph/qsgdistancefieldglyphnode.cpp
@@ -46,12 +46,12 @@ QT_BEGIN_NAMESPACE
 QSGDistanceFieldGlyphNode::QSGDistanceFieldGlyphNode(QSGRenderContext *context)
     : m_glyphNodeType(RootGlyphNode)
     , m_context(context)
-    , m_material(0)
-    , m_glyph_cache(0)
+    , m_material(nullptr)
+    , m_glyph_cache(nullptr)
     , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 0)
     , m_style(QQuickText::Normal)
     , m_antialiasingMode(GrayAntialiasing)
-    , m_texture(0)
+    , m_texture(nullptr)
     , m_dirtyGeometry(false)
     , m_dirtyMaterial(false)
 {
@@ -80,7 +80,7 @@ QSGDistanceFieldGlyphNode::~QSGDistanceFieldGlyphNode()
 void QSGDistanceFieldGlyphNode::setColor(const QColor &color)
 {
     m_color = color;
-    if (m_material != 0) {
+    if (m_material != nullptr) {
         m_material->setColor(color);
         markDirty(DirtyMaterial);
     } else {
@@ -113,7 +113,7 @@ void QSGDistanceFieldGlyphNode::setGlyphs(const QPointF &position, const QGlyphR
         return;
 
     if (m_glyph_cache != oldCache) {
-        Q_ASSERT(ownerElement() != 0);
+        Q_ASSERT(ownerElement() != nullptr);
         if (oldCache) {
             oldCache->unregisterGlyphNode(this);
             oldCache->unregisterOwnerElement(ownerElement());
@@ -181,7 +181,7 @@ void QSGDistanceFieldGlyphNode::updateGeometry()
     // Remove previously created sub glyph nodes
     // We assume all the children are sub glyph nodes
     QSGNode *subnode = firstChild();
-    QSGNode *nextNode = 0;
+    QSGNode *nextNode = nullptr;
     while (subnode) {
         nextNode = subnode->nextSibling();
         delete subnode;
diff --git a/src/quick/scenegraph/qsgdistancefieldglyphnode_p.cpp b/src/quick/scenegraph/qsgdistancefieldglyphnode_p.cpp
index 03c5738e56..dd2d787495 100644
--- a/src/quick/scenegraph/qsgdistancefieldglyphnode_p.cpp
+++ b/src/quick/scenegraph/qsgdistancefieldglyphnode_p.cpp
@@ -77,7 +77,7 @@ protected:
 };
 
 char const *const *QSGDistanceFieldTextMaterialShader::attributeNames() const {
-    static char const *const attr[] = { "vCoord", "tCoord", 0 };
+    static char const *const attr[] = { "vCoord", "tCoord", nullptr };
     return attr;
 }
 
@@ -166,13 +166,13 @@ void QSGDistanceFieldTextMaterialShader::initialize()
 
 void QSGDistanceFieldTextMaterialShader::updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect)
 {
-    Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type());
+    Q_ASSERT(oldEffect == nullptr || newEffect->type() == oldEffect->type());
     QSGDistanceFieldTextMaterial *material = static_cast<QSGDistanceFieldTextMaterial *>(newEffect);
     QSGDistanceFieldTextMaterial *oldMaterial = static_cast<QSGDistanceFieldTextMaterial *>(oldEffect);
 
     bool updated = material->updateTextureSize();
 
-    if (oldMaterial == 0
+    if (oldMaterial == nullptr
            || material->color() != oldMaterial->color()
            || state.isOpacityDirty()) {
         QVector4D color = material->color();
@@ -181,7 +181,7 @@ void QSGDistanceFieldTextMaterialShader::updateState(const RenderState &state, Q
     }
 
     bool updateRange = false;
-    if (oldMaterial == 0
+    if (oldMaterial == nullptr
             || material->fontScale() != oldMaterial->fontScale()) {
         m_fontScale = material->fontScale();
         updateRange = true;
@@ -198,7 +198,7 @@ void QSGDistanceFieldTextMaterialShader::updateState(const RenderState &state, Q
     Q_ASSERT(material->glyphCache());
 
     if (updated
-            || oldMaterial == 0
+            || oldMaterial == nullptr
             || oldMaterial->texture()->textureId != material->texture()->textureId) {
         updateTextureScale(QVector2D(1.0 / material->textureSize().width(),
                                      1.0 / material->textureSize().height()));
@@ -218,8 +218,8 @@ void QSGDistanceFieldTextMaterialShader::updateState(const RenderState &state, Q
 }
 
 QSGDistanceFieldTextMaterial::QSGDistanceFieldTextMaterial()
-    : m_glyph_cache(0)
-    , m_texture(0)
+    : m_glyph_cache(nullptr)
+    , m_texture(nullptr)
     , m_fontScale(1.0)
 {
    setFlag(Blending | RequiresDeterminant, true);
@@ -310,7 +310,7 @@ void DistanceFieldStyledTextMaterialShader::updateState(const RenderState &state
     QSGDistanceFieldStyledTextMaterial *material = static_cast<QSGDistanceFieldStyledTextMaterial *>(newEffect);
     QSGDistanceFieldStyledTextMaterial *oldMaterial = static_cast<QSGDistanceFieldStyledTextMaterial *>(oldEffect);
 
-    if (oldMaterial == 0
+    if (oldMaterial == nullptr
            || material->styleColor() != oldMaterial->styleColor()
            || (state.isOpacityDirty())) {
         QVector4D color = material->styleColor();
@@ -398,7 +398,7 @@ void DistanceFieldOutlineTextMaterialShader::updateState(const RenderState &stat
     QSGDistanceFieldOutlineTextMaterial *material = static_cast<QSGDistanceFieldOutlineTextMaterial *>(newEffect);
     QSGDistanceFieldOutlineTextMaterial *oldMaterial = static_cast<QSGDistanceFieldOutlineTextMaterial *>(oldEffect);
 
-    if (oldMaterial == 0
+    if (oldMaterial == nullptr
             || material->fontScale() != oldMaterial->fontScale()
             || state.isMatrixDirty())
         updateOutlineAlphaRange(material->glyphCache()->distanceFieldRadius());
@@ -462,7 +462,7 @@ void DistanceFieldShiftedStyleTextMaterialShader::updateState(const RenderState
     QSGDistanceFieldShiftedStyleTextMaterial *material = static_cast<QSGDistanceFieldShiftedStyleTextMaterial *>(newEffect);
     QSGDistanceFieldShiftedStyleTextMaterial *oldMaterial = static_cast<QSGDistanceFieldShiftedStyleTextMaterial *>(oldEffect);
 
-    if (oldMaterial == 0
+    if (oldMaterial == nullptr
             || oldMaterial->fontScale() != material->fontScale()
             || oldMaterial->shift() != material->shift()
             || oldMaterial->textureSize() != material->textureSize()) {
@@ -550,19 +550,19 @@ void QSGHiQSubPixelDistanceFieldTextMaterialShader::deactivate()
 
 void QSGHiQSubPixelDistanceFieldTextMaterialShader::updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect)
 {
-    Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type());
+    Q_ASSERT(oldEffect == nullptr || newEffect->type() == oldEffect->type());
     QSGDistanceFieldTextMaterial *material = static_cast<QSGDistanceFieldTextMaterial *>(newEffect);
     QSGDistanceFieldTextMaterial *oldMaterial = static_cast<QSGDistanceFieldTextMaterial *>(oldEffect);
 
-    if (oldMaterial == 0 || material->color() != oldMaterial->color()) {
+    if (oldMaterial == nullptr || material->color() != oldMaterial->color()) {
         QVector4D c = material->color();
         state.context()->functions()->glBlendColor(c.x(), c.y(), c.z(), 1.0f);
     }
 
-    if (oldMaterial == 0 || material->fontScale() != oldMaterial->fontScale())
+    if (oldMaterial == nullptr || material->fontScale() != oldMaterial->fontScale())
         program()->setUniformValue(m_fontScale_id, GLfloat(material->fontScale()));
 
-    if (oldMaterial == 0 || state.isMatrixDirty()) {
+    if (oldMaterial == nullptr || state.isMatrixDirty()) {
         int viewportWidth = state.viewportRect().width();
         QMatrix4x4 mat = state.combinedMatrix().inverted();
         program()->setUniformValue(m_vecDelta_id, mat.column(0) * (qreal(2) / viewportWidth));
diff --git a/src/quick/scenegraph/qsgrenderloop.cpp b/src/quick/scenegraph/qsgrenderloop.cpp
index e74ba83e7f..60f3538662 100644
--- a/src/quick/scenegraph/qsgrenderloop.cpp
+++ b/src/quick/scenegraph/qsgrenderloop.cpp
@@ -88,7 +88,7 @@ extern Q_GUI_EXPORT QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_
 DEFINE_BOOL_CONFIG_OPTION(qmlNoThreadedRenderer, QML_BAD_GUI_RENDER_LOOP);
 DEFINE_BOOL_CONFIG_OPTION(qmlForceThreadedRenderer, QML_FORCE_THREADED_RENDERER); // Might trigger graphics driver threading bugs, use at own risk
 #endif
-QSGRenderLoop *QSGRenderLoop::s_instance = 0;
+QSGRenderLoop *QSGRenderLoop::s_instance = nullptr;
 
 QSGRenderLoop::~QSGRenderLoop()
 {
@@ -107,11 +107,11 @@ void QSGRenderLoop::cleanup()
         QQuickWindowPrivate *wd = QQuickWindowPrivate::get(w);
         if (wd->windowManager == s_instance) {
            s_instance->windowDestroyed(w);
-           wd->windowManager = 0;
+           wd->windowManager = nullptr;
         }
     }
     delete s_instance;
-    s_instance = 0;
+    s_instance = nullptr;
 }
 
 /*!
@@ -155,7 +155,7 @@ public:
 
     void releaseResources(QQuickWindow *) override;
 
-    QAnimationDriver *animationDriver() const override { return 0; }
+    QAnimationDriver *animationDriver() const override { return nullptr; }
 
     QSGContext *sceneGraphContext() const override;
     QSGRenderContext *createRenderContext(QSGContext *) const override { return rc; }
@@ -275,7 +275,7 @@ void QSGRenderLoop::handleContextCreationFailure(QQuickWindow *window,
 }
 #if QT_CONFIG(opengl)
 QSGGuiThreadRenderLoop::QSGGuiThreadRenderLoop()
-    : gl(0)
+    : gl(nullptr)
 {
     if (qsg_useConsistentTiming()) {
         QUnifiedTimer::instance(true)->setConsistentTiming(true);
@@ -337,7 +337,7 @@ void QSGGuiThreadRenderLoop::windowDestroyed(QQuickWindow *window)
     if (m_windows.size() == 0) {
         rc->invalidate();
         delete gl;
-        gl = 0;
+        gl = nullptr;
     } else if (gl && window == gl->surface() && current) {
         gl->doneCurrent();
     }
@@ -364,7 +364,7 @@ void QSGGuiThreadRenderLoop::renderWindow(QQuickWindow *window)
         if (!gl->create()) {
             const bool isEs = gl->isOpenGLES();
             delete gl;
-            gl = 0;
+            gl = nullptr;
             handleContextCreationFailure(window, isEs);
         } else {
             cd->fireOpenGLContextCreated(gl);
diff --git a/src/quick/scenegraph/qsgthreadedrenderloop.cpp b/src/quick/scenegraph/qsgthreadedrenderloop.cpp
index c2f0cc4716..8262708320 100644
--- a/src/quick/scenegraph/qsgthreadedrenderloop.cpp
+++ b/src/quick/scenegraph/qsgthreadedrenderloop.cpp
@@ -167,7 +167,7 @@ template <typename T> T *windowFor(const QList<T> &list, QQuickWindow *window)
         if (t.window == window)
             return const_cast<T *>(&t);
     }
-    return 0;
+    return nullptr;
 }
 
 
@@ -270,13 +270,13 @@ class QSGRenderThread : public QThread
 public:
     QSGRenderThread(QSGThreadedRenderLoop *w, QSGRenderContext *renderContext)
         : wm(w)
-        , gl(0)
-        , animatorDriver(0)
+        , gl(nullptr)
+        , animatorDriver(nullptr)
         , pendingUpdate(0)
         , sleeping(false)
         , syncResultedInChanges(false)
         , active(false)
-        , window(0)
+        , window(nullptr)
         , stopEventProcessing(false)
     {
         sgrc = static_cast<QSGDefaultRenderContext *>(renderContext);
@@ -366,7 +366,7 @@ bool QSGRenderThread::event(QEvent *e)
         if (window) {
             QQuickWindowPrivate::get(window)->fireAboutToStop();
             qCDebug(QSG_LOG_RENDERLOOP, QSG_RT_PAD, "- window removed");
-            window = 0;
+            window = nullptr;
         }
         waitCondition.wakeOne();
         mutex.unlock();
@@ -456,7 +456,7 @@ bool QSGRenderThread::event(QEvent *e)
             gl->makeCurrent(window);
             ce->job->run();
             delete ce->job;
-            ce->job = 0;
+            ce->job = nullptr;
             qCDebug(QSG_LOG_RENDERLOOP, QSG_RT_PAD, "- job done");
         }
         return true;
@@ -514,7 +514,7 @@ void QSGRenderThread::invalidateOpenGL(QQuickWindow *window, bool inDestructor,
 
     sgrc->invalidate();
     QCoreApplication::processEvents();
-    QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
+    QCoreApplication::sendPostedEvents(nullptr, QEvent::DeferredDelete);
     if (inDestructor)
         delete dd->animationController;
     if (current)
@@ -523,7 +523,7 @@ void QSGRenderThread::invalidateOpenGL(QQuickWindow *window, bool inDestructor,
 
     if (wipeGL) {
         delete gl;
-        gl = 0;
+        gl = nullptr;
         qCDebug(QSG_LOG_RENDERLOOP, QSG_RT_PAD, "- invalidated OpenGL");
     } else {
         qCDebug(QSG_LOG_RENDERLOOP, QSG_RT_PAD, "- persistent GL, avoiding cleanup");
@@ -554,7 +554,7 @@ void QSGRenderThread::sync(bool inExpose)
     }
     if (current) {
         QQuickWindowPrivate *d = QQuickWindowPrivate::get(window);
-        bool hadRenderer = d->renderer != 0;
+        bool hadRenderer = d->renderer != nullptr;
         // If the scene graph was touched since the last sync() make sure it sends the
         // changed signal.
         if (d->renderer)
@@ -570,7 +570,7 @@ void QSGRenderThread::sync(bool inExpose)
         // Process deferred deletes now, directly after the sync as
         // deleteLater on the GUI must now also have resulted in SG changes
         // and the delete is a safe operation.
-        QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
+        QCoreApplication::sendPostedEvents(nullptr, QEvent::DeferredDelete);
     } else {
         qCDebug(QSG_LOG_RENDERLOOP, QSG_RT_PAD, "- window has bad size, sync aborted");
     }
@@ -716,7 +716,7 @@ void QSGRenderThread::processEventsAndWaitForMore()
 void QSGRenderThread::run()
 {
     qCDebug(QSG_LOG_RENDERLOOP, QSG_RT_PAD, "run()");
-    animatorDriver = sgrc->sceneGraphContext()->createAnimationDriver(0);
+    animatorDriver = sgrc->sceneGraphContext()->createAnimationDriver(nullptr);
     animatorDriver->install();
     if (QQmlDebugConnector::service<QQmlProfilerService>())
         QQuickProfiler::registerAnimationCallback();
@@ -745,7 +745,7 @@ void QSGRenderThread::run()
     qCDebug(QSG_LOG_RENDERLOOP, QSG_RT_PAD, "run() completed");
 
     delete animatorDriver;
-    animatorDriver = 0;
+    animatorDriver = nullptr;
 
     sgrc->moveToThread(wm->thread());
     moveToThread(wm->thread());
@@ -826,7 +826,7 @@ void QSGThreadedRenderLoop::animationStopped()
 void QSGThreadedRenderLoop::startOrStopAnimationTimer()
 {
     int exposedWindows = 0;
-    const Window *theOne = 0;
+    const Window *theOne = nullptr;
     for (int i=0; i<m_windows.size(); ++i) {
         const Window &w = m_windows.at(i);
         if (w.window->isVisible() && w.window->isExposed()) {
@@ -973,7 +973,7 @@ void QSGThreadedRenderLoop::handleExposure(QQuickWindow *window)
             if (!w->thread->gl->create()) {
                 const bool isEs = w->thread->gl->isOpenGLES();
                 delete w->thread->gl;
-                w->thread->gl = 0;
+                w->thread->gl = nullptr;
                 handleContextCreationFailure(w->window, isEs);
                 return;
             }
@@ -1123,7 +1123,7 @@ void QSGThreadedRenderLoop::releaseResources(Window *w, bool inDestructor)
         // and the OpenGL resources.
         // QOffscreenSurface must be created on the GUI thread, so we
         // create it here and pass it on to QSGRenderThread::invalidateGL()
-        QOffscreenSurface *fallback = 0;
+        QOffscreenSurface *fallback = nullptr;
         if (!window->handle()) {
             qCDebug(QSG_LOG_RENDERLOOP, "- using fallback surface");
             fallback = new QOffscreenSurface();
diff --git a/src/quick/scenegraph/qsgwindowsrenderloop.cpp b/src/quick/scenegraph/qsgwindowsrenderloop.cpp
index 8072359e11..3b2737b8e1 100644
--- a/src/quick/scenegraph/qsgwindowsrenderloop.cpp
+++ b/src/quick/scenegraph/qsgwindowsrenderloop.cpp
@@ -78,7 +78,7 @@ static QElapsedTimer qsg_render_timer;
 
 
 QSGWindowsRenderLoop::QSGWindowsRenderLoop()
-    : m_gl(0)
+    : m_gl(nullptr)
     , m_sg(QSGContext::createDefaultContext())
     , m_updateTimer(0)
     , m_animationTimer(0)
@@ -117,7 +117,7 @@ QSGWindowsRenderLoop::WindowData *QSGWindowsRenderLoop::windowData(QQuickWindow
         if (wd.window == window)
             return &wd;
     }
-    return 0;
+    return nullptr;
 }
 
 void QSGWindowsRenderLoop::maybePostUpdateTimer()
@@ -158,7 +158,7 @@ void QSGWindowsRenderLoop::stopped()
 void QSGWindowsRenderLoop::show(QQuickWindow *window)
 {
     RLDEBUG("show");
-    if (windowData(window) != 0)
+    if (windowData(window) != nullptr)
         return;
 
     // This happens before the platform window is shown, but after
@@ -178,7 +178,7 @@ void QSGWindowsRenderLoop::show(QQuickWindow *window)
         if (!created) {
             const bool isEs = m_gl->isOpenGLES();
             delete m_gl;
-            m_gl = 0;
+            m_gl = nullptr;
             handleContextCreationFailure(window, isEs);
             return;
         }
@@ -253,7 +253,7 @@ void QSGWindowsRenderLoop::windowDestroyed(QQuickWindow *window)
     if (m_windows.size() == 0) {
         d->context->invalidate();
         delete m_gl;
-        m_gl = 0;
+        m_gl = nullptr;
     } else if (m_gl && current) {
         m_gl->doneCurrent();
     }
@@ -272,7 +272,7 @@ bool QSGWindowsRenderLoop::anyoneShowing() const
 void QSGWindowsRenderLoop::exposureChanged(QQuickWindow *window)
 {
 
-    if (windowData(window) == 0)
+    if (windowData(window) == nullptr)
         return;
 
     if (window->isExposed() && window->isVisible()) {
diff --git a/src/quick/scenegraph/util/qsgareaallocator.cpp b/src/quick/scenegraph/util/qsgareaallocator.cpp
index 67a9fa285a..cd270a1d63 100644
--- a/src/quick/scenegraph/util/qsgareaallocator.cpp
+++ b/src/quick/scenegraph/util/qsgareaallocator.cpp
@@ -72,8 +72,8 @@ struct QSGAreaAllocatorNode
 
 QSGAreaAllocatorNode::QSGAreaAllocatorNode(QSGAreaAllocatorNode *parent)
     : parent(parent)
-    , left(0)
-    , right(0)
+    , left(nullptr)
+    , right(nullptr)
     , isOccupied(false)
 {
 }
@@ -86,14 +86,14 @@ QSGAreaAllocatorNode::~QSGAreaAllocatorNode()
 
 bool QSGAreaAllocatorNode::isLeaf()
 {
-    Q_ASSERT((left != 0) == (right != 0));
+    Q_ASSERT((left != nullptr) == (right != nullptr));
     return !left;
 }
 
 
 QSGAreaAllocator::QSGAreaAllocator(const QSize &size) : m_size(size)
 {
-    m_root = new QSGAreaAllocatorNode(0);
+    m_root = new QSGAreaAllocatorNode(nullptr);
 }
 
 QSGAreaAllocator::~QSGAreaAllocator()
@@ -179,13 +179,13 @@ bool QSGAreaAllocator::deallocateInNode(const QPoint &pos, QSGAreaAllocatorNode
 void QSGAreaAllocator::mergeNodeWithNeighbors(QSGAreaAllocatorNode *node)
 {
     bool done = false;
-    QSGAreaAllocatorNode *parent = 0;
-    QSGAreaAllocatorNode *current = 0;
+    QSGAreaAllocatorNode *parent = nullptr;
+    QSGAreaAllocatorNode *current = nullptr;
     QSGAreaAllocatorNode *sibling;
     while (!done) {
         Q_ASSERT(node->isLeaf());
         Q_ASSERT(!node->isOccupied);
-        if (node->parent == 0)
+        if (node->parent == nullptr)
             return; // No neighbours.
 
         SplitType splitType = SplitType(node->parent->splitType);
@@ -238,7 +238,7 @@ void QSGAreaAllocator::mergeNodeWithNeighbors(QSGAreaAllocatorNode *node)
                 }
                 sibling->parent = parent->parent;
                 *nodeRef = sibling;
-                parent->left = parent->right = 0;
+                parent->left = parent->right = nullptr;
                 delete parent;
                 delete neighbor;
                 done = false;
@@ -276,7 +276,7 @@ void QSGAreaAllocator::mergeNodeWithNeighbors(QSGAreaAllocatorNode *node)
                 }
                 sibling->parent = parent->parent;
                 *nodeRef = sibling;
-                parent->left = parent->right = 0;
+                parent->left = parent->right = nullptr;
                 delete parent;
                 delete neighbor;
                 done = false;
diff --git a/src/quick/scenegraph/util/qsgareaallocator_p.h b/src/quick/scenegraph/util/qsgareaallocator_p.h
index aa40ff0a6e..8bc05a5a5b 100644
--- a/src/quick/scenegraph/util/qsgareaallocator_p.h
+++ b/src/quick/scenegraph/util/qsgareaallocator_p.h
@@ -67,7 +67,7 @@ public:
 
     QRect allocate(const QSize &size);
     bool deallocate(const QRect &rect);
-    bool isEmpty() const { return m_root == 0; }
+    bool isEmpty() const { return m_root == nullptr; }
     QSize size() const { return m_size; }
 private:
     bool allocateInNode(const QSize &size, QPoint &result, const QRect &currentRect, QSGAreaAllocatorNode *node);
diff --git a/src/quick/scenegraph/util/qsgatlastexture.cpp b/src/quick/scenegraph/util/qsgatlastexture.cpp
index 4ca5fba7de..7608a81ddc 100644
--- a/src/quick/scenegraph/util/qsgatlastexture.cpp
+++ b/src/quick/scenegraph/util/qsgatlastexture.cpp
@@ -75,7 +75,7 @@ namespace QSGAtlasTexture
 {
 
 Manager::Manager()
-    : m_atlas(0)
+    : m_atlas(nullptr)
 {
     QOpenGLContext *gl = QOpenGLContext::currentContext();
     Q_ASSERT(gl);
@@ -105,7 +105,7 @@ Manager::Manager()
 
 Manager::~Manager()
 {
-    Q_ASSERT(m_atlas == 0);
+    Q_ASSERT(m_atlas == nullptr);
     Q_ASSERT(m_atlases.isEmpty());
 }
 
@@ -114,7 +114,7 @@ void Manager::invalidate()
     if (m_atlas) {
         m_atlas->invalidate();
         m_atlas->deleteLater();
-        m_atlas = 0;
+        m_atlas = nullptr;
     }
 
     QHash<unsigned int, QSGCompressedAtlasTexture::Atlas*>::iterator i = m_atlases.begin();
@@ -128,7 +128,7 @@ void Manager::invalidate()
 
 QSGTexture *Manager::create(const QImage &image, bool hasAlphaChannel)
 {
-    Texture *t = 0;
+    Texture *t = nullptr;
     if (image.width() < m_atlas_size_limit && image.height() < m_atlas_size_limit) {
         if (!m_atlas)
             m_atlas = new Atlas(m_atlas_size);
@@ -142,7 +142,7 @@ QSGTexture *Manager::create(const QImage &image, bool hasAlphaChannel)
 
 QSGTexture *Manager::create(const QSGCompressedTextureFactory *factory)
 {
-    QSGTexture *t = 0;
+    QSGTexture *t = nullptr;
     if (!qsgEnableCompressedAtlas() || !factory->m_textureData || !factory->m_textureData->isValid())
         return t;
 
@@ -348,7 +348,7 @@ Texture *Atlas::create(const QImage &image)
         m_pending_uploads << t;
         return t;
     }
-    return 0;
+    return nullptr;
 }
 
 static void swizzleBGRAToRGBA(QImage *image)
@@ -467,7 +467,7 @@ void Atlas::uploadBgra(Texture *texture)
 void Atlas::generateTexture()
 {
     QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();
-    funcs->glTexImage2D(GL_TEXTURE_2D, 0, m_internalFormat, m_size.width(), m_size.height(), 0, m_externalFormat, GL_UNSIGNED_BYTE, 0);
+    funcs->glTexImage2D(GL_TEXTURE_2D, 0, m_internalFormat, m_size.width(), m_size.height(), 0, m_externalFormat, GL_UNSIGNED_BYTE, nullptr);
 
 #if 0
     QImage pink(m_size.width(), m_size.height(), QImage::Format_ARGB32_Premultiplied);
@@ -527,7 +527,7 @@ void TextureBase::bind()
 Texture::Texture(Atlas *atlas, const QRect &textureRect, const QImage &image)
     : TextureBase(atlas, textureRect)
     , m_image(image)
-    , m_nonatlas_texture(0)
+    , m_nonatlas_texture(nullptr)
     , m_has_alpha(image.hasAlphaChannel())
 {
     float w = atlas->size().width();
diff --git a/src/quick/scenegraph/util/qsgdefaultpainternode.cpp b/src/quick/scenegraph/util/qsgdefaultpainternode.cpp
index 9ffd1b4b08..981ea089be 100644
--- a/src/quick/scenegraph/util/qsgdefaultpainternode.cpp
+++ b/src/quick/scenegraph/util/qsgdefaultpainternode.cpp
@@ -78,11 +78,11 @@ QSGDefaultPainterNode::QSGDefaultPainterNode(QQuickPaintedItem *item)
     , m_preferredRenderTarget(QQuickPaintedItem::Image)
     , m_actualRenderTarget(QQuickPaintedItem::Image)
     , m_item(item)
-    , m_fbo(0)
-    , m_multisampledFbo(0)
+    , m_fbo(nullptr)
+    , m_multisampledFbo(nullptr)
     , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4)
-    , m_texture(0)
-    , m_gl_device(0)
+    , m_texture(nullptr)
+    , m_gl_device(nullptr)
     , m_fillColor(Qt::transparent)
     , m_contentsScale(1.0)
     , m_dirtyContents(false)
@@ -260,8 +260,8 @@ void QSGDefaultPainterNode::updateRenderTarget()
         delete m_fbo;
         delete m_multisampledFbo;
         delete m_gl_device;
-        m_fbo = m_multisampledFbo = 0;
-        m_gl_device = 0;
+        m_fbo = m_multisampledFbo = nullptr;
+        m_gl_device = nullptr;
     }
 
     if (m_actualRenderTarget == QQuickPaintedItem::FramebufferObject ||
@@ -275,7 +275,7 @@ void QSGDefaultPainterNode::updateRenderTarget()
 
         delete m_fbo;
         delete m_multisampledFbo;
-        m_fbo = m_multisampledFbo = 0;
+        m_fbo = m_multisampledFbo = nullptr;
         if (m_gl_device)
             m_gl_device->setSize(m_fboSize);
 
diff --git a/src/quick/scenegraph/util/qsgdepthstencilbuffer.cpp b/src/quick/scenegraph/util/qsgdepthstencilbuffer.cpp
index ba0207aca8..56508af152 100644
--- a/src/quick/scenegraph/util/qsgdepthstencilbuffer.cpp
+++ b/src/quick/scenegraph/util/qsgdepthstencilbuffer.cpp
@@ -43,7 +43,7 @@ QT_BEGIN_NAMESPACE
 
 QSGDepthStencilBuffer::QSGDepthStencilBuffer(QOpenGLContext *context, const Format &format)
     : m_functions(context)
-    , m_manager(0)
+    , m_manager(nullptr)
     , m_format(format)
     , m_depthBuffer(0)
     , m_stencilBuffer(0)
@@ -160,7 +160,7 @@ QSGDepthStencilBufferManager::~QSGDepthStencilBufferManager()
     for (Hash::const_iterator it = m_buffers.constBegin(), cend = m_buffers.constEnd(); it != cend; ++it) {
         QSGDepthStencilBuffer *buffer = it.value().data();
         buffer->free();
-        buffer->m_manager = 0;
+        buffer->m_manager = nullptr;
     }
 }
 
@@ -174,7 +174,7 @@ QSharedPointer<QSGDepthStencilBuffer> QSGDepthStencilBufferManager::bufferForFor
 
 void QSGDepthStencilBufferManager::insertBuffer(const QSharedPointer<QSGDepthStencilBuffer> &buffer)
 {
-    Q_ASSERT(buffer->m_manager == 0);
+    Q_ASSERT(buffer->m_manager == nullptr);
     Q_ASSERT(!m_buffers.contains(buffer->m_format));
     buffer->m_manager = this;
     m_buffers.insert(buffer->m_format, buffer.toWeakRef());
diff --git a/src/quick/scenegraph/util/qsgengine.cpp b/src/quick/scenegraph/util/qsgengine.cpp
index dffe199224..91fa46033c 100644
--- a/src/quick/scenegraph/util/qsgengine.cpp
+++ b/src/quick/scenegraph/util/qsgengine.cpp
@@ -157,7 +157,7 @@ QSGAbstractRenderer *QSGEngine::createRenderer() const
 {
     Q_D(const QSGEngine);
     if (!d->sgRenderContext->isValid())
-        return 0;
+        return nullptr;
 
     QSGRenderer *renderer = d->sgRenderContext->createRenderer();
     renderer->setCustomRenderMode(qgetenv("QSG_VISUALIZE"));
@@ -178,7 +178,7 @@ QSGTexture *QSGEngine::createTextureFromImage(const QImage &image, CreateTexture
 {
     Q_D(const QSGEngine);
      if (!d->sgRenderContext->isValid())
-         return 0;
+         return nullptr;
     uint flags = 0;
     if (options & TextureCanUseAtlas)     flags |= QSGRenderContext::CreateTexture_Atlas;
     if (!(options & TextureIsOpaque))     flags |= QSGRenderContext::CreateTexture_Alpha;
@@ -206,7 +206,7 @@ QSGTexture *QSGEngine::createTextureFromId(uint id, const QSize &size, CreateTex
         texture->setTextureSize(size);
         return texture;
     }
-    return 0;
+    return nullptr;
 }
 
 /*!
diff --git a/src/quick/scenegraph/util/qsgflatcolormaterial.cpp b/src/quick/scenegraph/util/qsgflatcolormaterial.cpp
index a0c71b5340..28f6113a60 100644
--- a/src/quick/scenegraph/util/qsgflatcolormaterial.cpp
+++ b/src/quick/scenegraph/util/qsgflatcolormaterial.cpp
@@ -77,13 +77,13 @@ FlatColorMaterialShader::FlatColorMaterialShader()
 void FlatColorMaterialShader::updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect)
 {
 #if QT_CONFIG(opengl)
-    Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type());
+    Q_ASSERT(oldEffect == nullptr || newEffect->type() == oldEffect->type());
     QSGFlatColorMaterial *oldMaterial = static_cast<QSGFlatColorMaterial *>(oldEffect);
     QSGFlatColorMaterial *newMaterial = static_cast<QSGFlatColorMaterial *>(newEffect);
 
     const QColor &c = newMaterial->color();
 
-    if (oldMaterial == 0 || c != oldMaterial->color() || state.isOpacityDirty()) {
+    if (oldMaterial == nullptr || c != oldMaterial->color() || state.isOpacityDirty()) {
         float opacity = state.opacity() * c.alphaF();
         QVector4D v(c.redF() * opacity,
                     c.greenF() *  opacity,
@@ -103,7 +103,7 @@ void FlatColorMaterialShader::updateState(const RenderState &state, QSGMaterial
 
 char const *const *FlatColorMaterialShader::attributeNames() const
 {
-    static char const *const attr[] = { "vCoord", 0 };
+    static char const *const attr[] = { "vCoord", nullptr };
     return attr;
 }
 
diff --git a/src/quick/scenegraph/util/qsgshadersourcebuilder.cpp b/src/quick/scenegraph/util/qsgshadersourcebuilder.cpp
index e134a5d4d3..93fc213f2e 100644
--- a/src/quick/scenegraph/util/qsgshadersourcebuilder.cpp
+++ b/src/quick/scenegraph/util/qsgshadersourcebuilder.cpp
@@ -262,8 +262,8 @@ void QSGShaderSourceBuilder::addDefinition(const QByteArray &definition)
     tok.initialize(input);
 
     // First find #version, #extension's and "void main() { ... "
-    const char *versionPos = 0;
-    const char *extensionPos = 0;
+    const char *versionPos = nullptr;
+    const char *extensionPos = nullptr;
     bool inSingleLineComment = false;
     bool inMultiLineComment = false;
     bool foundVersionStart = false;
@@ -325,8 +325,8 @@ void QSGShaderSourceBuilder::removeVersion()
     tok.initialize(input);
 
     // First find #version beginning and end (if present)
-    const char *versionStartPos = 0;
-    const char *versionEndPos = 0;
+    const char *versionStartPos = nullptr;
+    const char *versionEndPos = nullptr;
     bool inSingleLineComment = false;
     bool inMultiLineComment = false;
     bool foundVersionStart = false;
@@ -361,7 +361,7 @@ void QSGShaderSourceBuilder::removeVersion()
         t = tok.next();
     }
 
-    if (versionStartPos == 0)
+    if (versionStartPos == nullptr)
         return;
 
     // Construct a new shader string, inserting the definition
diff --git a/src/quick/scenegraph/util/qsgsimplematerial.h b/src/quick/scenegraph/util/qsgsimplematerial.h
index 8a81917bd2..dcf9b89b21 100644
--- a/src/quick/scenegraph/util/qsgsimplematerial.h
+++ b/src/quick/scenegraph/util/qsgsimplematerial.h
@@ -207,7 +207,7 @@ Q_INLINE_TEMPLATE void QSGSimpleMaterialShader<State>::updateState(const RenderS
     Q_UNUSED(state)
 #endif
     State *ns = static_cast<QSGSimpleMaterial<State> *>(newMaterial)->state();
-    State *old = 0;
+    State *old = nullptr;
     if (oldMaterial)
         old = static_cast<QSGSimpleMaterial<State> *>(oldMaterial)->state();
     updateState(ns, old);
diff --git a/src/quick/scenegraph/util/qsgtexture.cpp b/src/quick/scenegraph/util/qsgtexture.cpp
index d2599ebd72..fea92a5121 100644
--- a/src/quick/scenegraph/util/qsgtexture.cpp
+++ b/src/quick/scenegraph/util/qsgtexture.cpp
@@ -399,7 +399,7 @@ QSGTexture::~QSGTexture()
 QSGTexture *QSGTexture::removedFromAtlas() const
 {
     Q_ASSERT_X(!isAtlasTexture(), "QSGTexture::removedFromAtlas()", "Called on a non-atlas texture");
-    return 0;
+    return nullptr;
 }
 
 /*!
diff --git a/src/quick/scenegraph/util/qsgtexturematerial.cpp b/src/quick/scenegraph/util/qsgtexturematerial.cpp
index 0f9ee9cfde..70a8b321d8 100644
--- a/src/quick/scenegraph/util/qsgtexturematerial.cpp
+++ b/src/quick/scenegraph/util/qsgtexturematerial.cpp
@@ -67,7 +67,7 @@ QSGOpaqueTextureMaterialShader::QSGOpaqueTextureMaterialShader()
 
 char const *const *QSGOpaqueTextureMaterialShader::attributeNames() const
 {
-    static char const *const attr[] = { "qt_VertexPosition", "qt_VertexTexCoord", 0 };
+    static char const *const attr[] = { "qt_VertexPosition", "qt_VertexTexCoord", nullptr };
     return attr;
 }
 
@@ -80,7 +80,7 @@ void QSGOpaqueTextureMaterialShader::initialize()
 
 void QSGOpaqueTextureMaterialShader::updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect)
 {
-    Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type());
+    Q_ASSERT(oldEffect == nullptr || newEffect->type() == oldEffect->type());
     QSGOpaqueTextureMaterial *tx = static_cast<QSGOpaqueTextureMaterial *>(newEffect);
     QSGOpaqueTextureMaterial *oldTx = static_cast<QSGOpaqueTextureMaterial *>(oldEffect);
 
@@ -112,7 +112,7 @@ void QSGOpaqueTextureMaterialShader::updateState(const RenderState &state, QSGMa
     t->setMipmapFiltering(tx->mipmapFiltering());
     t->setAnisotropyLevel(tx->anisotropyLevel());
 
-    if (oldTx == 0 || oldTx->texture()->textureId() != t->textureId())
+    if (oldTx == nullptr || oldTx->texture()->textureId() != t->textureId())
         t->bind();
     else
         t->updateBindOptions();
@@ -169,7 +169,7 @@ void QSGOpaqueTextureMaterialShader::updateState(const RenderState &state, QSGMa
 
  */
 QSGOpaqueTextureMaterial::QSGOpaqueTextureMaterial()
-    : m_texture(0)
+    : m_texture(nullptr)
     , m_filtering(QSGTexture::Nearest)
     , m_mipmap_filtering(QSGTexture::None)
     , m_horizontal_wrap(QSGTexture::ClampToEdge)
@@ -398,7 +398,7 @@ QSGTextureMaterialShader::QSGTextureMaterialShader()
 
 void QSGTextureMaterialShader::updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect)
 {
-    Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type());
+    Q_ASSERT(oldEffect == nullptr || newEffect->type() == oldEffect->type());
 #if QT_CONFIG(opengl)
     if (state.isOpacityDirty())
         program()->setUniformValue(m_opacity_id, state.opacity());
diff --git a/src/quick/scenegraph/util/qsgvertexcolormaterial.cpp b/src/quick/scenegraph/util/qsgvertexcolormaterial.cpp
index 42c589b14a..f1ad73af1b 100644
--- a/src/quick/scenegraph/util/qsgvertexcolormaterial.cpp
+++ b/src/quick/scenegraph/util/qsgvertexcolormaterial.cpp
@@ -87,7 +87,7 @@ void QSGVertexColorMaterialShader::updateState(const RenderState &state, QSGMate
 
 char const *const *QSGVertexColorMaterialShader::attributeNames() const
 {
-    static const char *const attr[] = { "vertexCoord", "vertexColor", 0 };
+    static const char *const attr[] = { "vertexCoord", "vertexColor", nullptr };
     return attr;
 }
 
diff --git a/src/quick/util/qquickanimation.cpp b/src/quick/util/qquickanimation.cpp
index 76b9b8f343..c936ba4e93 100644
--- a/src/quick/util/qquickanimation.cpp
+++ b/src/quick/util/qquickanimation.cpp
@@ -91,7 +91,7 @@ QQuickAbstractAnimation::~QQuickAbstractAnimation()
 {
     Q_D(QQuickAbstractAnimation);
     if (d->group)
-        setGroup(0);    //remove from group
+        setGroup(nullptr);    //remove from group
     delete d->animationInstance;
 }
 
@@ -643,7 +643,7 @@ QAbstractAnimationJob* QQuickAbstractAnimation::transition(QQuickStateActions &a
     Q_UNUSED(modified);
     Q_UNUSED(direction);
     Q_UNUSED(defaultTarget);
-    return 0;
+    return nullptr;
 }
 
 void QQuickAbstractAnimationPrivate::animationFinished(QAbstractAnimationJob*)
@@ -838,7 +838,7 @@ void QQuickColorAnimation::setTo(const QColor &t)
 }
 
 QActionAnimation::QActionAnimation()
-    : QAbstractAnimationJob(), animAction(0)
+    : QAbstractAnimationJob(), animAction(nullptr)
 {
 }
 
@@ -1706,7 +1706,7 @@ void QQuickAnimationGroupPrivate::clear_animation(QQmlListProperty<QQuickAbstrac
     if (q) {
         while (q->d_func()->animations.count()) {
             QQuickAbstractAnimation *firstAnim = q->d_func()->animations.at(0);
-            firstAnim->setGroup(0);
+            firstAnim->setGroup(nullptr);
         }
     }
 }
@@ -1715,7 +1715,7 @@ QQuickAnimationGroup::~QQuickAnimationGroup()
 {
     Q_D(QQuickAnimationGroup);
     for (int i = 0; i < d->animations.count(); ++i)
-        d->animations.at(i)->d_func()->group = 0;
+        d->animations.at(i)->d_func()->group = nullptr;
     d->animations.clear();
 }
 
@@ -1937,7 +1937,7 @@ void QQuickPropertyAnimationPrivate::convertVariant(QVariant &variant, int type)
 }
 
 QQuickBulkValueAnimator::QQuickBulkValueAnimator()
-    : QAbstractAnimationJob(), animValue(0), fromSourced(0), m_duration(250)
+    : QAbstractAnimationJob(), animValue(nullptr), fromSourced(nullptr), m_duration(250)
 {
 }
 
@@ -2556,7 +2556,7 @@ void QQuickAnimationPropertyUpdater::setValue(qreal v)
         if (deleted)
             return;
     }
-    wasDeleted = 0;
+    wasDeleted = nullptr;
     fromSourced = true;
 }
 
diff --git a/src/quick/util/qquickanimation_p.h b/src/quick/util/qquickanimation_p.h
index 5edbcc089a..d1f460fef7 100644
--- a/src/quick/util/qquickanimation_p.h
+++ b/src/quick/util/qquickanimation_p.h
@@ -87,7 +87,7 @@ public:
         AnyThread
     };
 
-    QQuickAbstractAnimation(QObject *parent=0);
+    QQuickAbstractAnimation(QObject *parent=nullptr);
     virtual ~QQuickAbstractAnimation();
 
     enum Loops { Infinite = -2 };
@@ -144,7 +144,7 @@ public:
     virtual QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0);
+                            QObject *defaultTarget = nullptr);
     QAbstractAnimationJob* qtAnimation();
 
 private Q_SLOTS:
@@ -166,7 +166,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPauseAnimation : public QQuickAbstractAnimati
     Q_PROPERTY(int duration READ duration WRITE setDuration NOTIFY durationChanged)
 
 public:
-    QQuickPauseAnimation(QObject *parent=0);
+    QQuickPauseAnimation(QObject *parent=nullptr);
     virtual ~QQuickPauseAnimation();
 
     int duration() const;
@@ -179,7 +179,7 @@ protected:
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                                           QQmlProperties &modified,
                                           TransitionDirection direction,
-                                          QObject *defaultTarget = 0) override;
+                                          QObject *defaultTarget = nullptr) override;
 };
 
 class QQuickScriptActionPrivate;
@@ -192,7 +192,7 @@ class QQuickScriptAction : public QQuickAbstractAnimation
     Q_PROPERTY(QString scriptName READ stateChangeScriptName WRITE setStateChangeScriptName)
 
 public:
-    QQuickScriptAction(QObject *parent=0);
+    QQuickScriptAction(QObject *parent=nullptr);
     virtual ~QQuickScriptAction();
 
     QQmlScriptString script() const;
@@ -205,7 +205,7 @@ protected:
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0) override;
+                            QObject *defaultTarget = nullptr) override;
 };
 
 class QQuickPropertyActionPrivate;
@@ -222,7 +222,7 @@ class QQuickPropertyAction : public QQuickAbstractAnimation
     Q_PROPERTY(QVariant value READ value WRITE setValue NOTIFY valueChanged)
 
 public:
-    QQuickPropertyAction(QObject *parent=0);
+    QQuickPropertyAction(QObject *parent=nullptr);
     virtual ~QQuickPropertyAction();
 
     QObject *target() const;
@@ -250,7 +250,7 @@ protected:
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0) override;
+                            QObject *defaultTarget = nullptr) override;
 };
 
 class QQuickPropertyAnimationPrivate;
@@ -270,7 +270,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPropertyAnimation : public QQuickAbstractAnim
     Q_PROPERTY(QQmlListProperty<QObject> exclude READ exclude)
 
 public:
-    QQuickPropertyAnimation(QObject *parent=0);
+    QQuickPropertyAnimation(QObject *parent=nullptr);
     virtual ~QQuickPropertyAnimation();
 
     virtual int duration() const;
@@ -300,13 +300,13 @@ public:
 protected:
     QQuickStateActions createTransitionActions(QQuickStateActions &actions,
                                                      QQmlProperties &modified,
-                                                     QObject *defaultTarget = 0);
+                                                     QObject *defaultTarget = nullptr);
 
     QQuickPropertyAnimation(QQuickPropertyAnimationPrivate &dd, QObject *parent);
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0) override;
+                            QObject *defaultTarget = nullptr) override;
 Q_SIGNALS:
     void durationChanged(int);
     void fromChanged();
@@ -325,7 +325,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickColorAnimation : public QQuickPropertyAnimati
     Q_PROPERTY(QColor to READ to WRITE setTo)
 
 public:
-    QQuickColorAnimation(QObject *parent=0);
+    QQuickColorAnimation(QObject *parent=nullptr);
     virtual ~QQuickColorAnimation();
 
     QColor from() const;
@@ -344,7 +344,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickNumberAnimation : public QQuickPropertyAnimat
     Q_PROPERTY(qreal to READ to WRITE setTo NOTIFY toChanged)
 
 public:
-    QQuickNumberAnimation(QObject *parent=0);
+    QQuickNumberAnimation(QObject *parent=nullptr);
     virtual ~QQuickNumberAnimation();
 
     qreal from() const;
@@ -369,7 +369,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickVector3dAnimation : public QQuickPropertyAnim
     Q_PROPERTY(QVector3D to READ to WRITE setTo NOTIFY toChanged)
 
 public:
-    QQuickVector3dAnimation(QObject *parent=0);
+    QQuickVector3dAnimation(QObject *parent=nullptr);
     virtual ~QQuickVector3dAnimation();
 
     QVector3D from() const;
@@ -390,7 +390,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickRotationAnimation : public QQuickPropertyAnim
     Q_PROPERTY(RotationDirection direction READ direction WRITE setDirection NOTIFY directionChanged)
 
 public:
-    QQuickRotationAnimation(QObject *parent=0);
+    QQuickRotationAnimation(QObject *parent=nullptr);
     virtual ~QQuickRotationAnimation();
 
     qreal from() const;
@@ -434,7 +434,7 @@ class QQuickSequentialAnimation : public QQuickAnimationGroup
     Q_DECLARE_PRIVATE(QQuickAnimationGroup)
 
 public:
-    QQuickSequentialAnimation(QObject *parent=0);
+    QQuickSequentialAnimation(QObject *parent=nullptr);
     virtual ~QQuickSequentialAnimation();
 
 protected:
@@ -442,7 +442,7 @@ protected:
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0) override;
+                            QObject *defaultTarget = nullptr) override;
 };
 
 class Q_QUICK_PRIVATE_EXPORT QQuickParallelAnimation : public QQuickAnimationGroup
@@ -451,7 +451,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickParallelAnimation : public QQuickAnimationGro
     Q_DECLARE_PRIVATE(QQuickAnimationGroup)
 
 public:
-    QQuickParallelAnimation(QObject *parent=0);
+    QQuickParallelAnimation(QObject *parent=nullptr);
     virtual ~QQuickParallelAnimation();
 
 protected:
@@ -459,7 +459,7 @@ protected:
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0) override;
+                            QObject *defaultTarget = nullptr) override;
 };
 
 
diff --git a/src/quick/util/qquickanimation_p_p.h b/src/quick/util/qquickanimation_p_p.h
index 7a1bd8ff13..304258cde1 100644
--- a/src/quick/util/qquickanimation_p_p.h
+++ b/src/quick/util/qquickanimation_p_p.h
@@ -178,7 +178,7 @@ public:
     : running(false), paused(false), alwaysRunToEnd(false),
       /*connectedTimeLine(false), */componentComplete(true),
       avoidPropertyValueSourceStart(false), disableUserControl(false),
-      registered(false), loopCount(1), group(0), animationInstance(0) {}
+      registered(false), loopCount(1), group(nullptr), animationInstance(nullptr) {}
 
     bool running:1;
     bool paused:1;
@@ -237,7 +237,7 @@ class QQuickPropertyActionPrivate : public QQuickAbstractAnimationPrivate
     Q_DECLARE_PUBLIC(QQuickPropertyAction)
 public:
     QQuickPropertyActionPrivate()
-    : QQuickAbstractAnimationPrivate(), target(0) {}
+    : QQuickAbstractAnimationPrivate(), target(nullptr) {}
 
     QObject *target;
     QString propertyName;
@@ -265,8 +265,8 @@ class QQuickPropertyAnimationPrivate : public QQuickAbstractAnimationPrivate
     Q_DECLARE_PUBLIC(QQuickPropertyAnimation)
 public:
     QQuickPropertyAnimationPrivate()
-    : QQuickAbstractAnimationPrivate(), target(0), fromSourced(false), fromIsDefined(false), toIsDefined(false),
-      defaultToInterpolatorType(0), interpolatorType(0), interpolator(0), duration(250), actions(0) {}
+    : QQuickAbstractAnimationPrivate(), target(nullptr), fromSourced(false), fromIsDefined(false), toIsDefined(false),
+      defaultToInterpolatorType(0), interpolatorType(0), interpolator(nullptr), duration(250), actions(nullptr) {}
 
     QVariant from;
     QVariant to;
@@ -306,7 +306,7 @@ public:
 class Q_AUTOTEST_EXPORT QQuickAnimationPropertyUpdater : public QQuickBulkValueUpdater
 {
 public:
-    QQuickAnimationPropertyUpdater() : interpolatorType(0), interpolator(0), prevInterpolatorType(0), reverse(false), fromSourced(false), fromDefined(false), wasDeleted(0) {}
+    QQuickAnimationPropertyUpdater() : interpolatorType(0), interpolator(nullptr), prevInterpolatorType(0), reverse(false), fromSourced(false), fromDefined(false), wasDeleted(nullptr) {}
     ~QQuickAnimationPropertyUpdater();
 
     void setValue(qreal v) override;
diff --git a/src/quick/util/qquickanimationcontroller.cpp b/src/quick/util/qquickanimationcontroller.cpp
index 5e56460098..63373541a6 100644
--- a/src/quick/util/qquickanimationcontroller.cpp
+++ b/src/quick/util/qquickanimationcontroller.cpp
@@ -49,7 +49,7 @@ class QQuickAnimationControllerPrivate : public QObjectPrivate, QAnimationJobCha
     Q_DECLARE_PUBLIC(QQuickAnimationController)
 public:
     QQuickAnimationControllerPrivate()
-        : progress(0.0), animation(0), animationInstance(0), finalized(false) {}
+        : progress(0.0), animation(nullptr), animationInstance(nullptr), finalized(false) {}
     void animationFinished(QAbstractAnimationJob *job) override;
     void animationCurrentTimeChanged(QAbstractAnimationJob *job, int currentTime) override;
 
@@ -197,7 +197,7 @@ void QQuickAnimationController::reload()
         return;
 
     if (!d->animation) {
-        d->animationInstance = 0;
+        d->animationInstance = nullptr;
     } else {
         QQuickStateActions actions;
         QQmlProperties properties;
diff --git a/src/quick/util/qquickanimationcontroller_p.h b/src/quick/util/qquickanimationcontroller_p.h
index 43555ac1c1..d9ce377060 100644
--- a/src/quick/util/qquickanimationcontroller_p.h
+++ b/src/quick/util/qquickanimationcontroller_p.h
@@ -69,7 +69,7 @@ class Q_AUTOTEST_EXPORT QQuickAnimationController : public QObject, public QQmlP
     Q_PROPERTY(QQuickAbstractAnimation *animation READ animation WRITE setAnimation NOTIFY animationChanged)
 
 public:
-    QQuickAnimationController(QObject *parent=0);
+    QQuickAnimationController(QObject *parent=nullptr);
     ~QQuickAnimationController();
 
     qreal progress() const;
diff --git a/src/quick/util/qquickanimator.cpp b/src/quick/util/qquickanimator.cpp
index 5608326f8a..d1ff78f8bc 100644
--- a/src/quick/util/qquickanimator.cpp
+++ b/src/quick/util/qquickanimator.cpp
@@ -280,22 +280,22 @@ QAbstractAnimationJob *QQuickAnimator::transition(QQuickStateActions &actions,
 
     if (d->defaultProperty.isValid() && propertyName() != d->defaultProperty.name()) {
         qDebug() << Q_FUNC_INFO << "property name conflict...";
-        return 0;
+        return nullptr;
     }
 
     // The animation system cannot handle backwards uncontrolled animations.
     if (direction == Backward)
-        return 0;
+        return nullptr;
 
     QQuickAnimatorJob *job = createJob();
     if (!job)
-        return 0;
+        return nullptr;
 
     d->apply(job, propertyName(), actions, modified, defaultTarget);
 
     if (!job->target()) {
         delete job;
-        return 0;
+        return nullptr;
     }
 
     return job;
@@ -576,7 +576,7 @@ QQuickAnimatorJob *QQuickUniformAnimator::createJob() const
 {
     QString u = propertyName();
     if (u.isEmpty())
-        return 0;
+        return nullptr;
 
     QQuickUniformAnimatorJob *job = new QQuickUniformAnimatorJob();
     job->setUniform(u.toLatin1());
diff --git a/src/quick/util/qquickanimator_p.h b/src/quick/util/qquickanimator_p.h
index 92c66299dc..511cecda7f 100644
--- a/src/quick/util/qquickanimator_p.h
+++ b/src/quick/util/qquickanimator_p.h
@@ -94,8 +94,8 @@ protected:
                                       TransitionDirection,
                                       QObject *) override;
 
-    QQuickAnimator(QQuickAnimatorPrivate &dd, QObject *parent = 0);
-    QQuickAnimator(QObject *parent = 0);
+    QQuickAnimator(QQuickAnimatorPrivate &dd, QObject *parent = nullptr);
+    QQuickAnimator(QObject *parent = nullptr);
 
 Q_SIGNALS:
     void targetItemChanged(QQuickItem *);
@@ -110,7 +110,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickScaleAnimator : public QQuickAnimator
 {
     Q_OBJECT
 public:
-    QQuickScaleAnimator(QObject *parent = 0);
+    QQuickScaleAnimator(QObject *parent = nullptr);
 protected:
     QQuickAnimatorJob *createJob() const override;
     QString propertyName() const override { return QStringLiteral("scale"); }
@@ -120,7 +120,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickXAnimator : public QQuickAnimator
 {
     Q_OBJECT
 public:
-    QQuickXAnimator(QObject *parent = 0);
+    QQuickXAnimator(QObject *parent = nullptr);
 protected:
     QQuickAnimatorJob *createJob() const override;
     QString propertyName() const override { return QStringLiteral("x"); }
@@ -130,7 +130,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickYAnimator : public QQuickAnimator
 {
     Q_OBJECT
 public:
-    QQuickYAnimator(QObject *parent = 0);
+    QQuickYAnimator(QObject *parent = nullptr);
 protected:
     QQuickAnimatorJob *createJob() const override;
     QString propertyName() const override { return QStringLiteral("y"); }
@@ -140,7 +140,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickOpacityAnimator : public QQuickAnimator
 {
     Q_OBJECT
 public:
-    QQuickOpacityAnimator(QObject *parent = 0);
+    QQuickOpacityAnimator(QObject *parent = nullptr);
 protected:
     QQuickAnimatorJob *createJob() const override;
     QString propertyName() const override { return QStringLiteral("opacity"); }
@@ -157,7 +157,7 @@ public:
     enum RotationDirection { Numerical, Shortest, Clockwise, Counterclockwise };
     Q_ENUM(RotationDirection)
 
-    QQuickRotationAnimator(QObject *parent = 0);
+    QQuickRotationAnimator(QObject *parent = nullptr);
 
     void setDirection(RotationDirection dir);
     RotationDirection direction() const;
@@ -179,7 +179,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickUniformAnimator : public QQuickAnimator
     Q_PROPERTY(QString uniform READ uniform WRITE setUniform NOTIFY uniformChanged)
 
 public:
-    QQuickUniformAnimator(QObject *parent = 0);
+    QQuickUniformAnimator(QObject *parent = nullptr);
 
     QString uniform() const;
     void setUniform(const QString &);
diff --git a/src/quick/util/qquickanimatorjob.cpp b/src/quick/util/qquickanimatorjob.cpp
index 43c8eb302a..6574f8f67e 100644
--- a/src/quick/util/qquickanimatorjob.cpp
+++ b/src/quick/util/qquickanimatorjob.cpp
@@ -250,8 +250,8 @@ void QQuickAnimatorProxyJob::syncBackCurrentValues()
 }
 
 QQuickAnimatorJob::QQuickAnimatorJob()
-    : m_target(0)
-    , m_controller(0)
+    : m_target(nullptr)
+    , m_controller(nullptr)
     , m_from(0)
     , m_to(0)
     , m_value(0)
diff --git a/src/quick/util/qquickanimatorjob_p.h b/src/quick/util/qquickanimatorjob_p.h
index 777da2ee6c..74085526c0 100644
--- a/src/quick/util/qquickanimatorjob_p.h
+++ b/src/quick/util/qquickanimatorjob_p.h
@@ -194,7 +194,7 @@ public:
     {
         Helper()
             : ref(1)
-            , node(0)
+            , node(nullptr)
             , ox(0)
             , oy(0)
             , dx(0)
diff --git a/src/quick/util/qquickapplication_p.h b/src/quick/util/qquickapplication_p.h
index 8ee203f0da..66a33489e4 100644
--- a/src/quick/util/qquickapplication_p.h
+++ b/src/quick/util/qquickapplication_p.h
@@ -72,7 +72,7 @@ class Q_AUTOTEST_EXPORT QQuickApplication : public QQmlApplication
     Q_PROPERTY(QQmlListProperty<QQuickScreenInfo> screens READ screens NOTIFY screensChanged)
 
 public:
-    explicit QQuickApplication(QObject *parent = 0);
+    explicit QQuickApplication(QObject *parent = nullptr);
     virtual ~QQuickApplication();
     bool active() const;
     Qt::LayoutDirection layoutDirection() const;
diff --git a/src/quick/util/qquickbehavior.cpp b/src/quick/util/qquickbehavior.cpp
index a562ebd937..8a4ff6a779 100644
--- a/src/quick/util/qquickbehavior.cpp
+++ b/src/quick/util/qquickbehavior.cpp
@@ -57,7 +57,7 @@ class QQuickBehaviorPrivate : public QObjectPrivate, public QAnimationJobChangeL
 {
     Q_DECLARE_PUBLIC(QQuickBehavior)
 public:
-    QQuickBehaviorPrivate() : animation(0), animationInstance(0), enabled(true), finalized(false)
+    QQuickBehaviorPrivate() : animation(nullptr), animationInstance(nullptr), enabled(true), finalized(false)
       , blockRunningChanged(false) {}
 
     void animationStateChanged(QAbstractAnimationJob *, QAbstractAnimationJob::State newState, QAbstractAnimationJob::State oldState) override;
diff --git a/src/quick/util/qquickbehavior_p.h b/src/quick/util/qquickbehavior_p.h
index b3fd2af400..f939597d15 100644
--- a/src/quick/util/qquickbehavior_p.h
+++ b/src/quick/util/qquickbehavior_p.h
@@ -72,7 +72,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickBehavior : public QObject, public QQmlPropert
     Q_CLASSINFO("DeferredPropertyNames", "animation")
 
 public:
-    QQuickBehavior(QObject *parent=0);
+    QQuickBehavior(QObject *parent=nullptr);
     ~QQuickBehavior();
 
     void setTarget(const QQmlProperty &) override;
diff --git a/src/quick/util/qquickfontloader.cpp b/src/quick/util/qquickfontloader.cpp
index 68e27c25fd..72b9149886 100644
--- a/src/quick/util/qquickfontloader.cpp
+++ b/src/quick/util/qquickfontloader.cpp
@@ -91,9 +91,9 @@ public:
 };
 
 QQuickFontObject::QQuickFontObject(int _id)
-    : QObject(0)
+    : QObject(nullptr)
 #if QT_CONFIG(qml_network)
-    ,redirectCount(0), reply(0)
+    ,redirectCount(0), reply(nullptr)
 #endif
     ,id(_id)
 {
@@ -119,7 +119,7 @@ void QQuickFontObject::replyFinished()
                 QUrl url = reply->url().resolved(redirect.toUrl());
                 QNetworkAccessManager *manager = reply->manager();
                 reply->deleteLater();
-                reply = 0;
+                reply = nullptr;
                 download(url, manager);
                 return;
             }
@@ -138,7 +138,7 @@ void QQuickFontObject::replyFinished()
             emit fontDownloaded(QString(), QQuickFontLoader::Error);
         }
         reply->deleteLater();
-        reply = 0;
+        reply = nullptr;
     }
 }
 #endif // qml_network
diff --git a/src/quick/util/qquickfontloader_p.h b/src/quick/util/qquickfontloader_p.h
index 29feecde4f..8d277f7cf7 100644
--- a/src/quick/util/qquickfontloader_p.h
+++ b/src/quick/util/qquickfontloader_p.h
@@ -72,7 +72,7 @@ public:
     enum Status { Null = 0, Ready, Loading, Error };
     Q_ENUM(Status)
 
-    QQuickFontLoader(QObject *parent = 0);
+    QQuickFontLoader(QObject *parent = nullptr);
     ~QQuickFontLoader();
 
     QUrl source() const;
diff --git a/src/quick/util/qquickfontmetrics_p.h b/src/quick/util/qquickfontmetrics_p.h
index ebabe51712..db2b7b6796 100644
--- a/src/quick/util/qquickfontmetrics_p.h
+++ b/src/quick/util/qquickfontmetrics_p.h
@@ -80,7 +80,7 @@ class Q_AUTOTEST_EXPORT QQuickFontMetrics : public QObject
     Q_PROPERTY(qreal strikeOutPosition READ strikeOutPosition NOTIFY fontChanged)
     Q_PROPERTY(qreal lineWidth READ lineWidth NOTIFY fontChanged)
 public:
-    explicit QQuickFontMetrics(QObject *parent = 0);
+    explicit QQuickFontMetrics(QObject *parent = nullptr);
     ~QQuickFontMetrics();
 
     QFont font() const;
diff --git a/src/quick/util/qquickglobal.cpp b/src/quick/util/qquickglobal.cpp
index 5f8d2b94d3..7fa20636ec 100644
--- a/src/quick/util/qquickglobal.cpp
+++ b/src/quick/util/qquickglobal.cpp
@@ -419,7 +419,7 @@ public:
             break;
         }
 
-        return 0;
+        return nullptr;
     }
 
     bool init(int type, QVariant& dst) override
@@ -863,8 +863,8 @@ void QQuick_initializeProviders()
 void QQuick_deinitializeProviders()
 {
     QQml_removeValueTypeProvider(getValueTypeProvider());
-    QQml_setColorProvider(0); // technically, another plugin may have overridden our providers
-    QQml_setGuiProvider(0);   // but we cannot handle that case in a sane way.
+    QQml_setColorProvider(nullptr); // technically, another plugin may have overridden our providers
+    QQml_setGuiProvider(nullptr);   // but we cannot handle that case in a sane way.
 }
 
 QT_END_NAMESPACE
diff --git a/src/quick/util/qquickimageprovider.cpp b/src/quick/util/qquickimageprovider.cpp
index 4003b88d09..e7891a6612 100644
--- a/src/quick/util/qquickimageprovider.cpp
+++ b/src/quick/util/qquickimageprovider.cpp
@@ -108,7 +108,7 @@ QImage QQuickTextureFactory::image() const
 QQuickTextureFactory *QQuickTextureFactory::textureFactoryForImage(const QImage &image)
 {
     if (image.isNull())
-        return 0;
+        return nullptr;
     QQuickTextureFactory *texture = QSGContext::createTextureFactoryFromImage(image);
     if (texture)
         return texture;
@@ -469,7 +469,7 @@ QQuickTextureFactory *QQuickImageProvider::requestTexture(const QString &id, QSi
     Q_UNUSED(requestedSize);
     if (d->type == Texture)
         qWarning("ImageProvider supports Texture type but has not implemented requestTexture()");
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -484,7 +484,7 @@ QQuickTextureFactory *QQuickImageProvider::requestTexture(const QString &id, QSi
 */
 QQuickAsyncImageProvider::QQuickAsyncImageProvider()
  : QQuickImageProvider(ImageResponse, ForceAsynchronousImageLoading)
- , d(0) // just as a placeholder in case we need it for the future
+ , d(nullptr) // just as a placeholder in case we need it for the future
 {
     Q_UNUSED(d);
 }
diff --git a/src/quick/util/qquickpath.cpp b/src/quick/util/qquickpath.cpp
index 1ae9b78669..56eafcd12a 100644
--- a/src/quick/util/qquickpath.cpp
+++ b/src/quick/util/qquickpath.cpp
@@ -256,7 +256,7 @@ bool QQuickPath::isClosed() const
 QQmlListProperty<QQuickPathElement> QQuickPath::pathElements()
 {
     return QQmlListProperty<QQuickPathElement>(this,
-                                               0,
+                                               nullptr,
                                                pathElements_append,
                                                pathElements_count,
                                                pathElements_at,
diff --git a/src/quick/util/qquickpath_p.h b/src/quick/util/qquickpath_p.h
index a49403fd0e..06f6800a0e 100644
--- a/src/quick/util/qquickpath_p.h
+++ b/src/quick/util/qquickpath_p.h
@@ -78,7 +78,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathElement : public QObject
 {
     Q_OBJECT
 public:
-    QQuickPathElement(QObject *parent=0) : QObject(parent) {}
+    QQuickPathElement(QObject *parent=nullptr) : QObject(parent) {}
 Q_SIGNALS:
     void changed();
 };
@@ -90,7 +90,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathAttribute : public QQuickPathElement
     Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
     Q_PROPERTY(qreal value READ value WRITE setValue NOTIFY valueChanged)
 public:
-    QQuickPathAttribute(QObject *parent=0) : QQuickPathElement(parent), _value(0) {}
+    QQuickPathAttribute(QObject *parent=nullptr) : QQuickPathElement(parent), _value(0) {}
 
 
     QString name() const;
@@ -117,7 +117,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickCurve : public QQuickPathElement
     Q_PROPERTY(qreal relativeX READ relativeX WRITE setRelativeX NOTIFY relativeXChanged)
     Q_PROPERTY(qreal relativeY READ relativeY WRITE setRelativeY NOTIFY relativeYChanged)
 public:
-    QQuickCurve(QObject *parent=0) : QQuickPathElement(parent) {}
+    QQuickCurve(QObject *parent=nullptr) : QQuickPathElement(parent) {}
 
     qreal x() const;
     void setX(qreal x);
@@ -154,7 +154,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathLine : public QQuickCurve
 {
     Q_OBJECT
 public:
-    QQuickPathLine(QObject *parent=0) : QQuickCurve(parent) {}
+    QQuickPathLine(QObject *parent=nullptr) : QQuickCurve(parent) {}
 
     void addToPath(QPainterPath &path, const QQuickPathData &) override;
 };
@@ -163,7 +163,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathMove : public QQuickCurve
 {
     Q_OBJECT
 public:
-    QQuickPathMove(QObject *parent=0) : QQuickCurve(parent) {}
+    QQuickPathMove(QObject *parent=nullptr) : QQuickCurve(parent) {}
 
     void addToPath(QPainterPath &path, const QQuickPathData &) override;
 };
@@ -177,7 +177,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathQuad : public QQuickCurve
     Q_PROPERTY(qreal relativeControlX READ relativeControlX WRITE setRelativeControlX NOTIFY relativeControlXChanged)
     Q_PROPERTY(qreal relativeControlY READ relativeControlY WRITE setRelativeControlY NOTIFY relativeControlYChanged)
 public:
-    QQuickPathQuad(QObject *parent=0) : QQuickCurve(parent), _controlX(0), _controlY(0) {}
+    QQuickPathQuad(QObject *parent=nullptr) : QQuickCurve(parent), _controlX(0), _controlY(0) {}
 
     qreal controlX() const;
     void setControlX(qreal x);
@@ -221,7 +221,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathCubic : public QQuickCurve
     Q_PROPERTY(qreal relativeControl2X READ relativeControl2X WRITE setRelativeControl2X NOTIFY relativeControl2XChanged)
     Q_PROPERTY(qreal relativeControl2Y READ relativeControl2Y WRITE setRelativeControl2Y NOTIFY relativeControl2YChanged)
 public:
-    QQuickPathCubic(QObject *parent=0) : QQuickCurve(parent), _control1X(0), _control1Y(0), _control2X(0), _control2Y(0) {}
+    QQuickPathCubic(QObject *parent=nullptr) : QQuickCurve(parent), _control1X(0), _control1Y(0), _control2X(0), _control2Y(0) {}
 
     qreal control1X() const;
     void setControl1X(qreal x);
@@ -278,7 +278,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathCatmullRomCurve : public QQuickCurve
 {
     Q_OBJECT
 public:
-    QQuickPathCatmullRomCurve(QObject *parent=0) : QQuickCurve(parent) {}
+    QQuickPathCatmullRomCurve(QObject *parent=nullptr) : QQuickCurve(parent) {}
 
     void addToPath(QPainterPath &path, const QQuickPathData &) override;
 };
@@ -293,7 +293,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathArc : public QQuickCurve
     Q_PROPERTY(qreal xAxisRotation READ xAxisRotation WRITE setXAxisRotation NOTIFY xAxisRotationChanged REVISION 2)
 
 public:
-    QQuickPathArc(QObject *parent=0)
+    QQuickPathArc(QObject *parent=nullptr)
         : QQuickCurve(parent), _radiusX(0), _radiusY(0), _useLargeArc(false), _direction(Clockwise), _xAxisRotation(0) {}
 
     enum ArcDirection { Clockwise, Counterclockwise };
@@ -343,7 +343,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathAngleArc : public QQuickCurve
     Q_PROPERTY(bool moveToStart READ moveToStart WRITE setMoveToStart NOTIFY moveToStartChanged)
 
 public:
-    QQuickPathAngleArc(QObject *parent=0)
+    QQuickPathAngleArc(QObject *parent=nullptr)
         : QQuickCurve(parent), _centerX(0), _centerY(0), _radiusX(0), _radiusY(0), _startAngle(0), _sweepAngle(0), _moveToStart(true) {}
 
     qreal centerX() const;
@@ -393,7 +393,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathSvg : public QQuickCurve
     Q_OBJECT
     Q_PROPERTY(QString path READ path WRITE setPath NOTIFY pathChanged)
 public:
-    QQuickPathSvg(QObject *parent=0) : QQuickCurve(parent) {}
+    QQuickPathSvg(QObject *parent=nullptr) : QQuickCurve(parent) {}
 
     QString path() const;
     void setPath(const QString &path);
@@ -412,7 +412,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPathPercent : public QQuickPathElement
     Q_OBJECT
     Q_PROPERTY(qreal value READ value WRITE setValue NOTIFY valueChanged)
 public:
-    QQuickPathPercent(QObject *parent=0) : QQuickPathElement(parent), _value(0) {}
+    QQuickPathPercent(QObject *parent=nullptr) : QQuickPathElement(parent), _value(0) {}
 
     qreal value() const;
     void setValue(qreal value);
@@ -448,7 +448,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickPath : public QObject, public QQmlParserStatu
     Q_CLASSINFO("DefaultProperty", "pathElements")
     Q_INTERFACES(QQmlParserStatus)
 public:
-    QQuickPath(QObject *parent=0);
+    QQuickPath(QObject *parent=nullptr);
     ~QQuickPath();
 
     QQmlListProperty<QQuickPathElement> pathElements();
@@ -467,7 +467,7 @@ public:
     QStringList attributes() const;
     qreal attributeAt(const QString &, qreal) const;
     QPointF pointAt(qreal) const;
-    QPointF sequentialPointAt(qreal p, qreal *angle = 0) const;
+    QPointF sequentialPointAt(qreal p, qreal *angle = nullptr) const;
     void invalidateSequentialHistory() const;
 
 Q_SIGNALS:
@@ -512,8 +512,8 @@ private:
 
     static void interpolate(QList<AttributePoint> &points, int idx, const QString &name, qreal value);
     static void endpoint(QList<AttributePoint> &attributePoints, const QString &name);
-    static QPointF forwardsPointAt(const QPainterPath &path, const qreal &pathLength, const QList<AttributePoint> &attributePoints, QQuickCachedBezier &prevBez, qreal p, qreal *angle = 0);
-    static QPointF backwardsPointAt(const QPainterPath &path, const qreal &pathLength, const QList<AttributePoint> &attributePoints, QQuickCachedBezier &prevBez, qreal p, qreal *angle = 0);
+    static QPointF forwardsPointAt(const QPainterPath &path, const qreal &pathLength, const QList<AttributePoint> &attributePoints, QQuickCachedBezier &prevBez, qreal p, qreal *angle = nullptr);
+    static QPointF backwardsPointAt(const QPainterPath &path, const qreal &pathLength, const QList<AttributePoint> &attributePoints, QQuickCachedBezier &prevBez, qreal p, qreal *angle = nullptr);
 
 private:
     Q_DISABLE_COPY(QQuickPath)
@@ -521,9 +521,9 @@ private:
     friend class QQuickPathAnimationUpdater;
 
 public:
-    QPainterPath createPath(const QPointF &startPoint, const QPointF &endPoint, const QStringList &attributes, qreal &pathLength, QList<AttributePoint> &attributePoints, bool *closed = 0);
-    QPainterPath createShapePath(const QPointF &startPoint, const QPointF &endPoint, qreal &pathLength, bool *closed = 0);
-    static QPointF sequentialPointAt(const QPainterPath &path, const qreal &pathLength, const QList<AttributePoint> &attributePoints, QQuickCachedBezier &prevBez, qreal p, qreal *angle = 0);
+    QPainterPath createPath(const QPointF &startPoint, const QPointF &endPoint, const QStringList &attributes, qreal &pathLength, QList<AttributePoint> &attributePoints, bool *closed = nullptr);
+    QPainterPath createShapePath(const QPointF &startPoint, const QPointF &endPoint, qreal &pathLength, bool *closed = nullptr);
+    static QPointF sequentialPointAt(const QPainterPath &path, const qreal &pathLength, const QList<AttributePoint> &attributePoints, QQuickCachedBezier &prevBez, qreal p, qreal *angle = nullptr);
 };
 
 QT_END_NAMESPACE
diff --git a/src/quick/util/qquickpathinterpolator.cpp b/src/quick/util/qquickpathinterpolator.cpp
index 838213042e..bb47ca0205 100644
--- a/src/quick/util/qquickpathinterpolator.cpp
+++ b/src/quick/util/qquickpathinterpolator.cpp
@@ -59,7 +59,7 @@ QT_BEGIN_NAMESPACE
 */
 
 QQuickPathInterpolator::QQuickPathInterpolator(QObject *parent) :
-    QObject(parent), _path(0), _x(0), _y(0), _angle(0), _progress(0)
+    QObject(parent), _path(nullptr), _x(0), _y(0), _angle(0), _progress(0)
 {
 }
 
diff --git a/src/quick/util/qquickpathinterpolator_p.h b/src/quick/util/qquickpathinterpolator_p.h
index 0fdb1a444f..60a9ff2e22 100644
--- a/src/quick/util/qquickpathinterpolator_p.h
+++ b/src/quick/util/qquickpathinterpolator_p.h
@@ -70,7 +70,7 @@ class Q_AUTOTEST_EXPORT QQuickPathInterpolator : public QObject
     Q_PROPERTY(qreal y READ y NOTIFY yChanged)
     Q_PROPERTY(qreal angle READ angle NOTIFY angleChanged)
 public:
-    explicit QQuickPathInterpolator(QObject *parent = 0);
+    explicit QQuickPathInterpolator(QObject *parent = nullptr);
 
     QQuickPath *path() const;
     void setPath(QQuickPath *path);
diff --git a/src/quick/util/qquickpixmapcache.cpp b/src/quick/util/qquickpixmapcache.cpp
index 7097bcc156..e1937aeec2 100644
--- a/src/quick/util/qquickpixmapcache.cpp
+++ b/src/quick/util/qquickpixmapcache.cpp
@@ -244,8 +244,8 @@ public:
     : refCount(1), inCache(false), pixmapStatus(QQuickPixmap::Error),
       url(u), errorString(e), requestSize(s),
       providerOptions(po), appliedTransform(QQuickImageProviderOptions::UsePluginDefaultTransform),
-      textureFactory(0), reply(0), prevUnreferenced(0),
-      prevUnreferencedPtr(0), nextUnreferenced(0)
+      textureFactory(nullptr), reply(nullptr), prevUnreferenced(nullptr),
+      prevUnreferencedPtr(nullptr), nextUnreferenced(nullptr)
     {
         declarativePixmaps.insert(pixmap);
     }
@@ -254,8 +254,8 @@ public:
     : refCount(1), inCache(false), pixmapStatus(QQuickPixmap::Loading),
       url(u), requestSize(r),
       providerOptions(po), appliedTransform(aTransform),
-      textureFactory(0), reply(0), prevUnreferenced(0), prevUnreferencedPtr(0),
-      nextUnreferenced(0)
+      textureFactory(nullptr), reply(nullptr), prevUnreferenced(nullptr), prevUnreferencedPtr(nullptr),
+      nextUnreferenced(nullptr)
     {
         declarativePixmaps.insert(pixmap);
     }
@@ -265,8 +265,8 @@ public:
     : refCount(1), inCache(false), pixmapStatus(QQuickPixmap::Ready),
       url(u), implicitSize(s), requestSize(r),
       providerOptions(po), appliedTransform(aTransform),
-      textureFactory(texture), reply(0), prevUnreferenced(0),
-      prevUnreferencedPtr(0), nextUnreferenced(0)
+      textureFactory(texture), reply(nullptr), prevUnreferenced(nullptr),
+      prevUnreferencedPtr(nullptr), nextUnreferenced(nullptr)
     {
         declarativePixmaps.insert(pixmap);
     }
@@ -274,8 +274,8 @@ public:
     QQuickPixmapData(QQuickPixmap *pixmap, QQuickTextureFactory *texture)
     : refCount(1), inCache(false), pixmapStatus(QQuickPixmap::Ready),
       appliedTransform(QQuickImageProviderOptions::UsePluginDefaultTransform),
-      textureFactory(texture), reply(0), prevUnreferenced(0),
-      prevUnreferencedPtr(0), nextUnreferenced(0)
+      textureFactory(texture), reply(nullptr), prevUnreferenced(nullptr),
+      prevUnreferencedPtr(nullptr), nextUnreferenced(nullptr)
     {
         if (texture)
             requestSize = implicitSize = texture->textureSize();
@@ -287,7 +287,7 @@ public:
         while (!declarativePixmaps.isEmpty()) {
             QQuickPixmap *referencer = declarativePixmaps.first();
             declarativePixmaps.remove(referencer);
-            referencer->d = 0;
+            referencer->d = nullptr;
         }
         delete textureFactory;
     }
@@ -443,9 +443,9 @@ static QString existingImageFileForPath(const QString &localFile)
 }
 
 QQuickPixmapReader::QQuickPixmapReader(QQmlEngine *eng)
-: QThread(eng), engine(eng), threadObject(0)
+: QThread(eng), engine(eng), threadObject(nullptr)
 #if QT_CONFIG(qml_network)
-, accessManager(0)
+, accessManager(nullptr)
 #endif
 {
     eventLoopQuitHack = new QObject;
@@ -464,7 +464,7 @@ QQuickPixmapReader::~QQuickPixmapReader()
     // manually cancel all outstanding jobs.
     for (QQuickPixmapReply *reply : qAsConst(jobs)) {
         if (reply->data && reply->data->reply == reply)
-            reply->data->reply = 0;
+            reply->data->reply = nullptr;
         delete reply;
     }
     jobs.clear();
@@ -473,7 +473,7 @@ QQuickPixmapReader::~QQuickPixmapReader()
     const auto cancelJob = [this](QQuickPixmapReply *reply) {
         if (reply->loading) {
             cancelled.append(reply);
-            reply->data = 0;
+            reply->data = nullptr;
         }
     };
 
@@ -547,7 +547,7 @@ void QQuickPixmapReader::asyncResponseFinished(QQuickImageResponse *response)
     QQuickPixmapReply *job = asyncResponses.take(response);
 
     if (job) {
-        QQuickTextureFactory *t = 0;
+        QQuickTextureFactory *t = nullptr;
         QQuickPixmapReply::ReadError error = QQuickPixmapReply::NoError;
         QString errorString;
         if (!response->errorString().isEmpty()) {
@@ -646,7 +646,7 @@ void QQuickPixmapReader::processJobs()
                 const QUrl url = job->url;
                 QString localFile;
                 QQuickImageProvider::ImageType imageType = QQuickImageProvider::Invalid;
-                QQuickImageProvider *provider = 0;
+                QQuickImageProvider *provider = nullptr;
 
                 if (url.scheme() == QLatin1String("image")) {
                     provider = static_cast<QQuickImageProvider *>(engine->imageProvider(imageProviderId(url)));
@@ -695,7 +695,7 @@ void QQuickPixmapReader::processJob(QQuickPixmapReply *runningJob, const QUrl &u
             QString errorStr = QQuickPixmap::tr("Invalid image provider: %1").arg(url.toString());
             mutex.lock();
             if (!cancelled.contains(runningJob))
-                runningJob->postReply(QQuickPixmapReply::Loading, errorStr, readSize, 0);
+                runningJob->postReply(QQuickPixmapReply::Loading, errorStr, readSize, nullptr);
             mutex.unlock();
             return;
         }
@@ -884,7 +884,7 @@ void QQuickPixmapReader::cancel(QQuickPixmapReply *reply)
     mutex.lock();
     if (reply->loading) {
         cancelled.append(reply);
-        reply->data = 0;
+        reply->data = nullptr;
         // XXX
         if (threadObject) threadObject->processJobs();
     } else {
@@ -918,7 +918,7 @@ void QQuickPixmapReader::run()
     exec();
 
     delete threadObject;
-    threadObject = 0;
+    threadObject = nullptr;
 }
 
 class QQuickPixmapKey
@@ -971,7 +971,7 @@ Q_GLOBAL_STATIC(QQuickPixmapStore, pixmapStore);
 
 
 QQuickPixmapStore::QQuickPixmapStore()
-    : m_unreferencedPixmaps(0), m_lastUnreferencedPixmap(0), m_unreferencedCost(0), m_timerId(-1), m_destroying(false)
+    : m_unreferencedPixmaps(nullptr), m_lastUnreferencedPixmap(nullptr), m_unreferencedCost(0), m_timerId(-1), m_destroying(false)
 {
 }
 
@@ -1014,9 +1014,9 @@ QQuickPixmapStore::~QQuickPixmapStore()
 
 void QQuickPixmapStore::unreferencePixmap(QQuickPixmapData *data)
 {
-    Q_ASSERT(data->prevUnreferenced == 0);
-    Q_ASSERT(data->prevUnreferencedPtr == 0);
-    Q_ASSERT(data->nextUnreferenced == 0);
+    Q_ASSERT(data->prevUnreferenced == nullptr);
+    Q_ASSERT(data->prevUnreferencedPtr == nullptr);
+    Q_ASSERT(data->nextUnreferenced == nullptr);
 
     data->nextUnreferenced = m_unreferencedPixmaps;
     data->prevUnreferencedPtr = &m_unreferencedPixmaps;
@@ -1052,9 +1052,9 @@ void QQuickPixmapStore::referencePixmap(QQuickPixmapData *data)
     if (m_lastUnreferencedPixmap == data)
         m_lastUnreferencedPixmap = data->prevUnreferenced;
 
-    data->nextUnreferenced = 0;
-    data->prevUnreferencedPtr = 0;
-    data->prevUnreferenced = 0;
+    data->nextUnreferenced = nullptr;
+    data->prevUnreferencedPtr = nullptr;
+    data->prevUnreferenced = nullptr;
 
     m_unreferencedCost -= data->cost();
 }
@@ -1063,12 +1063,12 @@ void QQuickPixmapStore::shrinkCache(int remove)
 {
     while ((remove > 0 || m_unreferencedCost > cache_limit) && m_lastUnreferencedPixmap) {
         QQuickPixmapData *data = m_lastUnreferencedPixmap;
-        Q_ASSERT(data->nextUnreferenced == 0);
+        Q_ASSERT(data->nextUnreferenced == nullptr);
 
-        *data->prevUnreferencedPtr = 0;
+        *data->prevUnreferencedPtr = nullptr;
         m_lastUnreferencedPixmap = data->prevUnreferenced;
-        data->prevUnreferencedPtr = 0;
-        data->prevUnreferenced = 0;
+        data->prevUnreferencedPtr = nullptr;
+        data->prevUnreferenced = nullptr;
 
         if (!m_destroying) {
             remove -= data->cost();
@@ -1085,7 +1085,7 @@ void QQuickPixmapStore::timerEvent(QTimerEvent *)
 
     shrinkCache(removalCost);
 
-    if (m_unreferencedPixmaps == 0) {
+    if (m_unreferencedPixmaps == nullptr) {
         killTimer(m_timerId);
         m_timerId = -1;
     }
@@ -1102,7 +1102,7 @@ void QQuickPixmap::purgeCache()
 }
 
 QQuickPixmapReply::QQuickPixmapReply(QQuickPixmapData *d)
-: data(d), engineForReader(0), requestSize(d->requestSize), url(d->url), loading(false), providerOptions(d->providerOptions), redirectCount(0)
+: data(d), engineForReader(nullptr), requestSize(d->requestSize), url(d->url), loading(false), providerOptions(d->providerOptions), redirectCount(0)
 {
     if (finishedIndex == -1) {
         finishedIndex = QMetaMethod::fromSignal(&QQuickPixmapReply::finished).methodIndex();
@@ -1125,10 +1125,10 @@ bool QQuickPixmapReply::event(QEvent *event)
             data->pixmapStatus = (de->error == NoError) ? QQuickPixmap::Ready : QQuickPixmap::Error;
             if (data->pixmapStatus == QQuickPixmap::Ready) {
                 data->textureFactory = de->textureFactory;
-                de->textureFactory = 0;
+                de->textureFactory = nullptr;
                 data->implicitSize = de->implicitSize;
                 PIXMAP_PROFILE(pixmapLoadingFinished(data->url,
-                        data->textureFactory != 0 && data->textureFactory->textureSize().isValid() ?
+                        data->textureFactory != nullptr && data->textureFactory->textureSize().isValid() ?
                         data->textureFactory->textureSize() :
                         (data->requestSize.isValid() ? data->requestSize : data->implicitSize)));
             } else {
@@ -1137,7 +1137,7 @@ bool QQuickPixmapReply::event(QEvent *event)
                 data->removeFromCache(); // We don't continue to cache error'd pixmaps
             }
 
-            data->reply = 0;
+            data->reply = nullptr;
             emit finished();
         } else {
             PIXMAP_PROFILE(pixmapStateChanged<QQuickProfiler::PixmapLoadingError>(url));
@@ -1173,8 +1173,8 @@ void QQuickPixmapData::release()
     if (refCount == 0) {
         if (reply) {
             QQuickPixmapReply *cancelReply = reply;
-            reply->data = 0;
-            reply = 0;
+            reply->data = nullptr;
+            reply = nullptr;
             QQuickPixmapReader::readerMutex.lock();
             QQuickPixmapReader *reader = QQuickPixmapReader::existingInstance(cancelReply->engineForReader);
             if (reader)
@@ -1276,7 +1276,7 @@ static QQuickPixmapData* createPixmapDataSync(QQuickPixmap *declarativePixmap, Q
 
     QString localFile = QQmlFile::urlToLocalFileOrQrc(url);
     if (localFile.isEmpty())
-        return 0;
+        return nullptr;
 
     QFile f(existingImageFileForPath(localFile));
     QSize readSize;
@@ -1318,18 +1318,18 @@ struct QQuickPixmapNull {
 Q_GLOBAL_STATIC(QQuickPixmapNull, nullPixmap);
 
 QQuickPixmap::QQuickPixmap()
-: d(0)
+: d(nullptr)
 {
 }
 
 QQuickPixmap::QQuickPixmap(QQmlEngine *engine, const QUrl &url)
-: d(0)
+: d(nullptr)
 {
     load(engine, url);
 }
 
 QQuickPixmap::QQuickPixmap(QQmlEngine *engine, const QUrl &url, const QSize &size)
-: d(0)
+: d(nullptr)
 {
     load(engine, url, size);
 }
@@ -1345,13 +1345,13 @@ QQuickPixmap::~QQuickPixmap()
     if (d) {
         d->declarativePixmaps.remove(this);
         d->release();
-        d = 0;
+        d = nullptr;
     }
 }
 
 bool QQuickPixmap::isNull() const
 {
-    return d == 0;
+    return d == nullptr;
 }
 
 bool QQuickPixmap::isReady() const
@@ -1422,7 +1422,7 @@ QQuickTextureFactory *QQuickPixmap::textureFactory() const
     if (d)
         return d->textureFactory;
 
-    return 0;
+    return nullptr;
 }
 
 QImage QQuickPixmap::image() const
@@ -1500,7 +1500,7 @@ void QQuickPixmap::load(QQmlEngine *engine, const QUrl &url, const QSize &reques
     if (d) {
         d->declarativePixmaps.remove(this);
         d->release();
-        d = 0;
+        d = nullptr;
     }
 
     QQuickPixmapKey key = { &url, &requestSize, providerOptions };
@@ -1572,7 +1572,7 @@ void QQuickPixmap::clear()
     if (d) {
         d->declarativePixmaps.remove(this);
         d->release();
-        d = 0;
+        d = nullptr;
     }
 }
 
@@ -1580,10 +1580,10 @@ void QQuickPixmap::clear(QObject *obj)
 {
     if (d) {
         if (d->reply)
-            QObject::disconnect(d->reply, 0, obj, 0);
+            QObject::disconnect(d->reply, nullptr, obj, nullptr);
         d->declarativePixmaps.remove(this);
         d->release();
-        d = 0;
+        d = nullptr;
     }
 }
 
diff --git a/src/quick/util/qquickprofiler.cpp b/src/quick/util/qquickprofiler.cpp
index 402cd44ff0..bd9f04e562 100644
--- a/src/quick/util/qquickprofiler.cpp
+++ b/src/quick/util/qquickprofiler.cpp
@@ -47,12 +47,12 @@
 QT_BEGIN_NAMESPACE
 
 // instance will be set, unset in constructor. Allows static methods to be inlined.
-QQuickProfiler *QQuickProfiler::s_instance = 0;
+QQuickProfiler *QQuickProfiler::s_instance = nullptr;
 quint64 QQuickProfiler::featuresEnabled = 0;
 
 void QQuickProfiler::initialize(QObject *parent)
 {
-    Q_ASSERT(s_instance == 0);
+    Q_ASSERT(s_instance == nullptr);
     s_instance = new QQuickProfiler(parent);
 }
 
@@ -99,7 +99,7 @@ QQuickProfiler::~QQuickProfiler()
 {
     QMutexLocker lock(&m_dataMutex);
     featuresEnabled = 0;
-    s_instance = 0;
+    s_instance = nullptr;
 }
 
 void QQuickProfiler::startProfilingImpl(quint64 features)
diff --git a/src/quick/util/qquickpropertychanges.cpp b/src/quick/util/qquickpropertychanges.cpp
index c585d4c16d..f79dbf35a0 100644
--- a/src/quick/util/qquickpropertychanges.cpp
+++ b/src/quick/util/qquickpropertychanges.cpp
@@ -459,7 +459,7 @@ QQuickPropertyChanges::ActionList QQuickPropertyChanges::actions()
 
             QQmlContextData *context = QQmlContextData::get(qmlContext(this));
 
-            QQmlBinding *newBinding = 0;
+            QQmlBinding *newBinding = nullptr;
             if (e.id != QQmlBinding::Invalid) {
                 QV4::Scope scope(qmlEngine(this)->handle());
                 QV4::Scoped<QV4::QmlContext> qmlContext(scope, QV4::QmlContext::create(scope.engine->rootContext(), context, object()));
diff --git a/src/quick/util/qquicksmoothedanimation_p.h b/src/quick/util/qquicksmoothedanimation_p.h
index 2f0e3bc0d8..7bceba387c 100644
--- a/src/quick/util/qquicksmoothedanimation_p.h
+++ b/src/quick/util/qquicksmoothedanimation_p.h
@@ -73,7 +73,7 @@ public:
     enum ReversingMode { Eased, Immediate, Sync };
     Q_ENUM(ReversingMode)
 
-    QQuickSmoothedAnimation(QObject *parent = 0);
+    QQuickSmoothedAnimation(QObject *parent = nullptr);
     ~QQuickSmoothedAnimation();
 
     ReversingMode reversingMode() const;
@@ -91,7 +91,7 @@ public:
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0) override;
+                            QObject *defaultTarget = nullptr) override;
 Q_SIGNALS:
     void velocityChanged();
     void reversingModeChanged();
diff --git a/src/quick/util/qquicksmoothedanimation_p_p.h b/src/quick/util/qquicksmoothedanimation_p_p.h
index a415fdb55f..7850562594 100644
--- a/src/quick/util/qquicksmoothedanimation_p_p.h
+++ b/src/quick/util/qquicksmoothedanimation_p_p.h
@@ -65,7 +65,7 @@ class QSmoothedAnimationTimer : public QTimer
 {
     Q_OBJECT
 public:
-    explicit QSmoothedAnimationTimer(QSmoothedAnimation *animation, QObject *parent = 0);
+    explicit QSmoothedAnimationTimer(QSmoothedAnimation *animation, QObject *parent = nullptr);
     ~QSmoothedAnimationTimer();
 public Q_SLOTS:
     void stopAnimation();
@@ -78,7 +78,7 @@ class Q_AUTOTEST_EXPORT QSmoothedAnimation : public QAbstractAnimationJob
 {
     Q_DISABLE_COPY(QSmoothedAnimation)
 public:
-    QSmoothedAnimation(QQuickSmoothedAnimationPrivate * = 0);
+    QSmoothedAnimation(QQuickSmoothedAnimationPrivate * = nullptr);
 
     ~QSmoothedAnimation();
     qreal to;
@@ -98,7 +98,7 @@ public:
     void init();
 
     void prepareForRestart();
-    void clearTemplate() { animationTemplate = 0; }
+    void clearTemplate() { animationTemplate = nullptr; }
 
 protected:
     void updateCurrentTime(int) override;
diff --git a/src/quick/util/qquickspringanimation.cpp b/src/quick/util/qquickspringanimation.cpp
index bf844589ba..4389d941fd 100644
--- a/src/quick/util/qquickspringanimation.cpp
+++ b/src/quick/util/qquickspringanimation.cpp
@@ -58,7 +58,7 @@ class Q_AUTOTEST_EXPORT QSpringAnimation : public QAbstractAnimationJob
 {
     Q_DISABLE_COPY(QSpringAnimation)
 public:
-    QSpringAnimation(QQuickSpringAnimationPrivate * = 0);
+    QSpringAnimation(QQuickSpringAnimationPrivate * = nullptr);
 
     ~QSpringAnimation();
     int duration() const override;
@@ -94,7 +94,7 @@ public:
     typedef QHash<QQmlProperty, QSpringAnimation*> ActiveAnimationHash;
     typedef ActiveAnimationHash::Iterator ActiveAnimationHashIt;
 
-    void clearTemplate() { animationTemplate = 0; }
+    void clearTemplate() { animationTemplate = nullptr; }
 
 protected:
     void updateCurrentTime(int time) override;
diff --git a/src/quick/util/qquickspringanimation_p.h b/src/quick/util/qquickspringanimation_p.h
index ffb2c41e6b..2014a4311a 100644
--- a/src/quick/util/qquickspringanimation_p.h
+++ b/src/quick/util/qquickspringanimation_p.h
@@ -73,7 +73,7 @@ class Q_AUTOTEST_EXPORT QQuickSpringAnimation : public QQuickNumberAnimation
     Q_PROPERTY(qreal mass READ mass WRITE setMass NOTIFY massChanged)
 
 public:
-    QQuickSpringAnimation(QObject *parent=0);
+    QQuickSpringAnimation(QObject *parent=nullptr);
     ~QQuickSpringAnimation();
 
     qreal velocity() const;
@@ -97,7 +97,7 @@ public:
     QAbstractAnimationJob* transition(QQuickStateActions &actions,
                             QQmlProperties &modified,
                             TransitionDirection direction,
-                            QObject *defaultTarget = 0) override;
+                            QObject *defaultTarget = nullptr) override;
 
 Q_SIGNALS:
     void modulusChanged();
diff --git a/src/quick/util/qquickstate.cpp b/src/quick/util/qquickstate.cpp
index 3e0a2169a8..be8300f531 100644
--- a/src/quick/util/qquickstate.cpp
+++ b/src/quick/util/qquickstate.cpp
@@ -52,8 +52,8 @@ QT_BEGIN_NAMESPACE
 DEFINE_BOOL_CONFIG_OPTION(stateChangeDebug, STATECHANGE_DEBUG);
 
 QQuickStateAction::QQuickStateAction()
-: restore(true), actionDone(false), reverseEvent(false), deletableToBinding(false), fromBinding(0), event(0),
-  specifiedObject(0)
+: restore(true), actionDone(false), reverseEvent(false), deletableToBinding(false), fromBinding(nullptr), event(nullptr),
+  specifiedObject(nullptr)
 {
 }
 
@@ -61,7 +61,7 @@ QQuickStateAction::QQuickStateAction(QObject *target, const QString &propertyNam
                const QVariant &value)
 : restore(true), actionDone(false), reverseEvent(false), deletableToBinding(false),
   property(target, propertyName, qmlEngine(target)), toValue(value),
-  fromBinding(0), event(0),
+  fromBinding(nullptr), event(nullptr),
   specifiedObject(target), specifiedProperty(propertyName)
 {
     if (property.isValid())
@@ -71,7 +71,7 @@ QQuickStateAction::QQuickStateAction(QObject *target, const QString &propertyNam
 QQuickStateAction::QQuickStateAction(QObject *target, const QQmlProperty &property, const QString &propertyName, const QVariant &value)
 : restore(true), actionDone(false), reverseEvent(false), deletableToBinding(false),
   property(property), toValue(value),
-  fromBinding(0), event(0),
+  fromBinding(nullptr), event(nullptr),
   specifiedObject(target), specifiedProperty(propertyName)
 {
     if (property.isValid())
@@ -192,7 +192,7 @@ bool QQuickState::isNamed() const
 bool QQuickState::isWhenKnown() const
 {
     Q_D(const QQuickState);
-    return d->when != 0;
+    return d->when != nullptr;
 }
 
 /*!
@@ -362,7 +362,7 @@ void QQuickStateAction::deleteFromBinding()
 {
     if (fromBinding) {
         QQmlPropertyPrivate::removeBinding(property);
-        fromBinding = 0;
+        fromBinding = nullptr;
     }
 }
 
@@ -530,7 +530,7 @@ QQmlAbstractBinding *QQuickState::bindingInRevertList(QObject *target, const QSt
         }
     }
 
-    return 0;
+    return nullptr;
 }
 
 bool QQuickState::isStateActive() const
diff --git a/src/quick/util/qquickstate_p.h b/src/quick/util/qquickstate_p.h
index f551402e80..89af5882df 100644
--- a/src/quick/util/qquickstate_p.h
+++ b/src/quick/util/qquickstate_p.h
@@ -126,7 +126,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickStateOperation : public QObject
 {
     Q_OBJECT
 public:
-    QQuickStateOperation(QObject *parent = 0)
+    QQuickStateOperation(QObject *parent = nullptr)
         : QObject(parent) {}
     typedef QList<QQuickStateAction> ActionList;
 
@@ -136,7 +136,7 @@ public:
     void setState(QQuickState *state);
 
 protected:
-    QQuickStateOperation(QObjectPrivate &dd, QObject *parent = 0);
+    QQuickStateOperation(QObjectPrivate &dd, QObject *parent = nullptr);
 
 private:
     Q_DECLARE_PRIVATE(QQuickStateOperation)
@@ -159,7 +159,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickState : public QObject
     Q_CLASSINFO("DeferredPropertyNames", "changes")
 
 public:
-    QQuickState(QObject *parent=0);
+    QQuickState(QObject *parent=nullptr);
     virtual ~QQuickState();
 
     QString name() const;
diff --git a/src/quick/util/qquickstate_p_p.h b/src/quick/util/qquickstate_p_p.h
index eba1dabecf..f1bc24c558 100644
--- a/src/quick/util/qquickstate_p_p.h
+++ b/src/quick/util/qquickstate_p_p.h
@@ -178,8 +178,8 @@ private:
 class QQuickRevertAction
 {
 public:
-    QQuickRevertAction() : event(0) {}
-    QQuickRevertAction(const QQmlProperty &prop) : property(prop), event(0) {}
+    QQuickRevertAction() : event(nullptr) {}
+    QQuickRevertAction(const QQmlProperty &prop) : property(prop), event(nullptr) {}
     QQuickRevertAction(QQuickStateActionEvent *e) : event(e) {}
     QQmlProperty property;
     QQuickStateActionEvent *event;
@@ -192,7 +192,7 @@ class QQuickStateOperationPrivate : public QObjectPrivate
 public:
 
     QQuickStateOperationPrivate()
-    : m_state(0) {}
+    : m_state(nullptr) {}
 
     QQuickState *m_state;
 };
@@ -203,7 +203,7 @@ class QQuickStatePrivate : public QObjectPrivate
 
 public:
     QQuickStatePrivate()
-    : when(0), named(false), inState(false), group(0) {}
+    : when(nullptr), named(false), inState(false), group(nullptr) {}
 
     typedef QList<QQuickSimpleAction> SimpleActionList;
 
@@ -233,7 +233,7 @@ public:
         QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data);
         QMutableListIterator<OperationGuard> listIterator(*list);
         while(listIterator.hasNext())
-            listIterator.next()->setState(0);
+            listIterator.next()->setState(nullptr);
         list->clear();
     }
     static int operations_count(QQmlListProperty<QQuickStateOperation> *prop) {
diff --git a/src/quick/util/qquickstatechangescript_p.h b/src/quick/util/qquickstatechangescript_p.h
index a1315ae2ef..ff509a7cf5 100644
--- a/src/quick/util/qquickstatechangescript_p.h
+++ b/src/quick/util/qquickstatechangescript_p.h
@@ -66,7 +66,7 @@ class Q_AUTOTEST_EXPORT QQuickStateChangeScript : public QQuickStateOperation, p
     Q_PROPERTY(QString name READ name WRITE setName)
 
 public:
-    QQuickStateChangeScript(QObject *parent=0);
+    QQuickStateChangeScript(QObject *parent=nullptr);
     ~QQuickStateChangeScript();
 
     ActionList actions() override;
diff --git a/src/quick/util/qquickstategroup.cpp b/src/quick/util/qquickstategroup.cpp
index ebcbbf93ed..1b99baed9a 100644
--- a/src/quick/util/qquickstategroup.cpp
+++ b/src/quick/util/qquickstategroup.cpp
@@ -60,7 +60,7 @@ class QQuickStateGroupPrivate : public QObjectPrivate
     Q_DECLARE_PUBLIC(QQuickStateGroup)
 public:
     QQuickStateGroupPrivate()
-    : nullState(0), componentComplete(true),
+    : nullState(nullptr), componentComplete(true),
       ignoreTrans(false), applyingState(false), unnamedCount(0) {}
 
     QString currentState;
@@ -129,7 +129,7 @@ QQuickStateGroup::~QQuickStateGroup()
 {
     Q_D(const QQuickStateGroup);
     for (int i = 0; i < d->states.count(); ++i)
-        d->states.at(i)->setStateGroup(0);
+        d->states.at(i)->setStateGroup(nullptr);
 }
 
 QList<QQuickState *> QQuickStateGroup::states() const
@@ -194,7 +194,7 @@ void QQuickStateGroupPrivate::clear_states(QQmlListProperty<QQuickState> *list)
     QQuickStateGroup *_this = static_cast<QQuickStateGroup *>(list->object);
     _this->d_func()->setCurrentStateInternal(QString(), true);
     for (int i = 0; i < _this->d_func()->states.count(); ++i) {
-        _this->d_func()->states.at(i)->setStateGroup(0);
+        _this->d_func()->states.at(i)->setStateGroup(nullptr);
     }
     _this->d_func()->states.clear();
 }
@@ -364,7 +364,7 @@ bool QQuickStateGroupPrivate::updateAutoState()
 
 QQuickTransition *QQuickStateGroupPrivate::findTransition(const QString &from, const QString &to)
 {
-    QQuickTransition *highest = 0;
+    QQuickTransition *highest = nullptr;
     int score = 0;
     bool reversed = false;
     bool done = false;
@@ -444,7 +444,7 @@ void QQuickStateGroupPrivate::setCurrentStateInternal(const QString &state,
 
     applyingState = true;
 
-    QQuickTransition *transition = ignoreTrans ? 0 : findTransition(currentState, state);
+    QQuickTransition *transition = ignoreTrans ? nullptr : findTransition(currentState, state);
     if (stateChangeDebug()) {
         qWarning() << this << "Changing state.  From" << currentState << ". To" << state;
         if (transition)
@@ -452,7 +452,7 @@ void QQuickStateGroupPrivate::setCurrentStateInternal(const QString &state,
                        << transition->toState();
     }
 
-    QQuickState *oldState = 0;
+    QQuickState *oldState = nullptr;
     if (!currentState.isEmpty()) {
         for (int ii = 0; ii < states.count(); ++ii) {
             if (states.at(ii)->name() == currentState) {
@@ -465,7 +465,7 @@ void QQuickStateGroupPrivate::setCurrentStateInternal(const QString &state,
     currentState = state;
     emit q->stateChanged(currentState);
 
-    QQuickState *newState = 0;
+    QQuickState *newState = nullptr;
     for (int ii = 0; ii < states.count(); ++ii) {
         if (states.at(ii)->name() == currentState) {
             newState = states.at(ii);
@@ -473,7 +473,7 @@ void QQuickStateGroupPrivate::setCurrentStateInternal(const QString &state,
         }
     }
 
-    if (oldState == 0 || newState == 0) {
+    if (oldState == nullptr || newState == nullptr) {
         if (!nullState) {
             nullState = new QQuickState;
             QQml_setParent_noEvent(nullState, q);
@@ -496,7 +496,7 @@ QQuickState *QQuickStateGroup::findState(const QString &name) const
             return state;
     }
 
-    return 0;
+    return nullptr;
 }
 
 void QQuickStateGroup::removeState(QQuickState *state)
diff --git a/src/quick/util/qquickstategroup_p.h b/src/quick/util/qquickstategroup_p.h
index eebe3a9e56..7235066d99 100644
--- a/src/quick/util/qquickstategroup_p.h
+++ b/src/quick/util/qquickstategroup_p.h
@@ -67,7 +67,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickStateGroup : public QObject, public QQmlParse
     Q_PROPERTY(QQmlListProperty<QQuickTransition> transitions READ transitionsProperty DESIGNABLE false)
 
 public:
-    QQuickStateGroup(QObject * = 0);
+    QQuickStateGroup(QObject * = nullptr);
     virtual ~QQuickStateGroup();
 
     QString state() const;
diff --git a/src/quick/util/qquickstyledtext.cpp b/src/quick/util/qquickstyledtext.cpp
index ae8719341d..762d49f2d2 100644
--- a/src/quick/util/qquickstyledtext.cpp
+++ b/src/quick/util/qquickstyledtext.cpp
@@ -695,7 +695,7 @@ void QQuickStyledTextPrivate::parseImageAttributes(const QChar *&ch, const QStri
                     image->size = image->pix->implicitSize();
                 } else {
                     delete image->pix;
-                    image->pix = 0;
+                    image->pix = nullptr;
                 }
             }
         }
diff --git a/src/quick/util/qquickstyledtext_p.h b/src/quick/util/qquickstyledtext_p.h
index 2a2e234224..821f95b6bf 100644
--- a/src/quick/util/qquickstyledtext_p.h
+++ b/src/quick/util/qquickstyledtext_p.h
@@ -68,7 +68,7 @@ class Q_AUTOTEST_EXPORT QQuickStyledTextImgTag
 {
 public:
     QQuickStyledTextImgTag()
-        : position(0), offset(0.0), align(QQuickStyledTextImgTag::Bottom), pix(0)
+        : position(0), offset(0.0), align(QQuickStyledTextImgTag::Bottom), pix(nullptr)
     { }
 
     ~QQuickStyledTextImgTag() { delete pix; }
diff --git a/src/quick/util/qquicksvgparser.cpp b/src/quick/util/qquicksvgparser.cpp
index 086c6d0b28..2bf9c121d3 100644
--- a/src/quick/util/qquicksvgparser.cpp
+++ b/src/quick/util/qquicksvgparser.cpp
@@ -126,7 +126,7 @@ static qreal toDouble(const QChar *&str)
             val = -val;
     } else {
         bool ok = false;
-        val = qstrtod(temp, 0, &ok);
+        val = qstrtod(temp, nullptr, &ok);
     }
     return val;
 
diff --git a/src/quick/util/qquicksystempalette_p.h b/src/quick/util/qquicksystempalette_p.h
index 086fb31993..9a3a520ed1 100644
--- a/src/quick/util/qquicksystempalette_p.h
+++ b/src/quick/util/qquicksystempalette_p.h
@@ -81,7 +81,7 @@ class Q_AUTOTEST_EXPORT QQuickSystemPalette : public QObject
     Q_PROPERTY(QColor highlightedText READ highlightedText NOTIFY paletteChanged)
 
 public:
-    QQuickSystemPalette(QObject *parent=0);
+    QQuickSystemPalette(QObject *parent=nullptr);
     ~QQuickSystemPalette();
 
     enum ColorGroup { Active = QPalette::Active, Inactive = QPalette::Inactive, Disabled = QPalette::Disabled };
diff --git a/src/quick/util/qquicktimeline.cpp b/src/quick/util/qquicktimeline.cpp
index 1f4ac08d4d..93284c0685 100644
--- a/src/quick/util/qquicktimeline.cpp
+++ b/src/quick/util/qquicktimeline.cpp
@@ -57,7 +57,7 @@ struct Update {
     Update(QQuickTimeLineValue *_g, qreal _v)
         : g(_g), v(_v) {}
     Update(const QQuickTimeLineCallback &_e)
-        : g(0), v(0), e(_e) {}
+        : g(nullptr), v(0), e(_e) {}
 
     QQuickTimeLineValue *g;
     qreal v;
@@ -133,7 +133,7 @@ struct QQuickTimeLinePrivate
 };
 
 QQuickTimeLinePrivate::QQuickTimeLinePrivate(QQuickTimeLine *parent)
-: length(0), syncPoint(0), q(parent), clockRunning(false), prevTime(0), order(0), syncMode(QQuickTimeLine::LocalSync), syncAdj(0), updateQueue(0)
+: length(0), syncPoint(0), q(parent), clockRunning(false), prevTime(0), order(0), syncMode(QQuickTimeLine::LocalSync), syncAdj(0), updateQueue(nullptr)
 {
 }
 
@@ -326,9 +326,9 @@ QQuickTimeLine::~QQuickTimeLine()
     for (QQuickTimeLinePrivate::Ops::Iterator iter = d->ops.begin();
             iter != d->ops.end();
             ++iter)
-        iter.key()->_t = 0;
+        iter.key()->_t = nullptr;
 
-    delete d; d = 0;
+    delete d; d = nullptr;
 }
 
 /*!
@@ -514,7 +514,7 @@ void QQuickTimeLine::reset(QQuickTimeLineValue &timeLineValue)
         return;
     }
     remove(&timeLineValue);
-    timeLineValue._t = 0;
+    timeLineValue._t = nullptr;
 }
 
 int QQuickTimeLine::duration() const
@@ -666,7 +666,7 @@ void QQuickTimeLine::complete()
 void QQuickTimeLine::clear()
 {
     for (QQuickTimeLinePrivate::Ops::const_iterator iter = d->ops.cbegin(), cend  = d->ops.cend(); iter != cend; ++iter)
-        iter.key()->_t = 0;
+        iter.key()->_t = nullptr;
     d->ops.clear();
     d->length = 0;
     d->syncPoint = 0;
@@ -800,7 +800,7 @@ int QQuickTimeLinePrivate::advance(int t)
 
             if (tl.ops.isEmpty()) {
                 iter = ops.erase(iter);
-                v->_t = 0;
+                v->_t = nullptr;
             } else {
                 if (tl.ops.first().type == Op::Pause && pauseTime != 0) {
                     int opPauseTime = tl.ops.first().length - tl.consumedOpLength;
@@ -826,7 +826,7 @@ int QQuickTimeLinePrivate::advance(int t)
                 v.e.d0(v.e.d1);
             }
         }
-        updateQueue = 0;
+        updateQueue = nullptr;
     } while(t);
 
     return pauseTime;
@@ -913,7 +913,7 @@ void QQuickTimeLine::remove(QQuickTimeLineObject *v)
 
 
 QQuickTimeLineObject::QQuickTimeLineObject()
-: _t(0)
+: _t(nullptr)
 {
 }
 
@@ -921,12 +921,12 @@ QQuickTimeLineObject::~QQuickTimeLineObject()
 {
     if (_t) {
         _t->remove(this);
-        _t = 0;
+        _t = nullptr;
     }
 }
 
 QQuickTimeLineCallback::QQuickTimeLineCallback()
-: d0(0), d1(0), d2(0)
+: d0(nullptr), d1(nullptr), d2(nullptr)
 {
 }
 
diff --git a/src/quick/util/qquicktimeline_p_p.h b/src/quick/util/qquicktimeline_p_p.h
index ae1087487b..abb5369b7b 100644
--- a/src/quick/util/qquicktimeline_p_p.h
+++ b/src/quick/util/qquicktimeline_p_p.h
@@ -65,7 +65,7 @@ class Q_AUTOTEST_EXPORT QQuickTimeLine : public QObject, QAbstractAnimationJob
 {
 Q_OBJECT
 public:
-    QQuickTimeLine(QObject *parent = 0);
+    QQuickTimeLine(QObject *parent = nullptr);
     ~QQuickTimeLine();
 
     enum SyncMode { LocalSync, GlobalSync };
@@ -152,7 +152,7 @@ public:
     typedef void (*Callback)(void *);
 
     QQuickTimeLineCallback();
-    QQuickTimeLineCallback(QQuickTimeLineObject *b, Callback, void * = 0);
+    QQuickTimeLineCallback(QQuickTimeLineObject *b, Callback, void * = nullptr);
     QQuickTimeLineCallback(const QQuickTimeLineCallback &o);
 
     QQuickTimeLineCallback &operator=(const QQuickTimeLineCallback &o);
@@ -170,7 +170,7 @@ class QQuickTimeLineValueProxy : public QQuickTimeLineValue
 {
 public:
     QQuickTimeLineValueProxy(T *cls, void (T::*func)(qreal), qreal v = 0.)
-    : QQuickTimeLineValue(v), _class(cls), _setFunctionReal(func), _setFunctionInt(0)
+    : QQuickTimeLineValue(v), _class(cls), _setFunctionReal(func), _setFunctionInt(nullptr)
     {
         Q_ASSERT(_class);
     }
diff --git a/src/quick/util/qquicktransition.cpp b/src/quick/util/qquicktransition.cpp
index 6ae89c4ed4..fd6415dffb 100644
--- a/src/quick/util/qquicktransition.cpp
+++ b/src/quick/util/qquicktransition.cpp
@@ -263,7 +263,7 @@ QQuickTransitionInstance *QQuickTransition::prepare(QQuickStateOperation::Action
     int start = d->reversed ? d->animations.count() - 1 : 0;
     int end = d->reversed ? -1 : d->animations.count();
 
-    QAbstractAnimationJob *anim = 0;
+    QAbstractAnimationJob *anim = nullptr;
     for (int i = start; i != end;) {
         anim = d->animations.at(i)->transition(actions, after, direction, defaultTarget);
         if (anim) {
diff --git a/src/quick/util/qquicktransition_p.h b/src/quick/util/qquicktransition_p.h
index 6d2e41fc9d..c7d06b8832 100644
--- a/src/quick/util/qquicktransition_p.h
+++ b/src/quick/util/qquicktransition_p.h
@@ -105,7 +105,7 @@ class Q_QUICK_PRIVATE_EXPORT QQuickTransition : public QObject
     Q_CLASSINFO("DeferredPropertyNames", "animations")
 
 public:
-    QQuickTransition(QObject *parent=0);
+    QQuickTransition(QObject *parent=nullptr);
     ~QQuickTransition();
 
     QString fromState() const;
diff --git a/src/quick/util/qquicktransitionmanager.cpp b/src/quick/util/qquicktransitionmanager.cpp
index 714e6d62b6..a1367249c6 100644
--- a/src/quick/util/qquicktransitionmanager.cpp
+++ b/src/quick/util/qquicktransitionmanager.cpp
@@ -56,7 +56,7 @@ class QQuickTransitionManagerPrivate
 {
 public:
     QQuickTransitionManagerPrivate()
-        : state(0), transitionInstance(0) {}
+        : state(nullptr), transitionInstance(nullptr) {}
 
     void applyBindings();
     typedef QList<QQuickSimpleAction> SimpleActionList;
@@ -79,7 +79,7 @@ void QQuickTransitionManager::setState(QQuickState *s)
 QQuickTransitionManager::~QQuickTransitionManager()
 {
     delete d->transitionInstance;
-    delete d; d = 0;
+    delete d; d = nullptr;
 }
 
 bool QQuickTransitionManager::isRunning() const
@@ -274,7 +274,7 @@ void QQuickTransitionManager::cancel()
         QQuickStateAction action = d->bindingsList[i];
         if (action.toBinding && action.deletableToBinding) {
             QQmlPropertyPrivate::removeBinding(action.property);
-            action.toBinding = 0;
+            action.toBinding = nullptr;
             action.deletableToBinding = false;
         } else if (action.event) {
             //### what do we do here?
diff --git a/src/quick/util/qquicktransitionmanager_p_p.h b/src/quick/util/qquicktransitionmanager_p_p.h
index 68daf6db3c..89317e1e07 100644
--- a/src/quick/util/qquicktransitionmanager_p_p.h
+++ b/src/quick/util/qquicktransitionmanager_p_p.h
@@ -66,7 +66,7 @@ public:
 
     bool isRunning() const;
 
-    void transition(const QList<QQuickStateAction> &, QQuickTransition *transition, QObject *defaultTarget = 0);
+    void transition(const QList<QQuickStateAction> &, QQuickTransition *transition, QObject *defaultTarget = nullptr);
 
     void cancel();
 
diff --git a/src/quick/util/qquickvalidator_p.h b/src/quick/util/qquickvalidator_p.h
index ba188e947a..812e552d8e 100644
--- a/src/quick/util/qquickvalidator_p.h
+++ b/src/quick/util/qquickvalidator_p.h
@@ -62,7 +62,7 @@ class Q_AUTOTEST_EXPORT QQuickIntValidator : public QIntValidator
     Q_OBJECT
     Q_PROPERTY(QString locale READ localeName WRITE setLocaleName RESET resetLocaleName NOTIFY localeNameChanged)
 public:
-    QQuickIntValidator(QObject *parent = 0);
+    QQuickIntValidator(QObject *parent = nullptr);
 
     QString localeName() const;
     void setLocaleName(const QString &name);
@@ -77,7 +77,7 @@ class Q_AUTOTEST_EXPORT QQuickDoubleValidator : public QDoubleValidator
     Q_OBJECT
     Q_PROPERTY(QString locale READ localeName WRITE setLocaleName RESET resetLocaleName NOTIFY localeNameChanged)
 public:
-    QQuickDoubleValidator(QObject *parent = 0);
+    QQuickDoubleValidator(QObject *parent = nullptr);
 
     QString localeName() const;
     void setLocaleName(const QString &name);
diff --git a/src/quickwidgets/qquickwidget.cpp b/src/quickwidgets/qquickwidget.cpp
index 6a767dbb46..6f3b685974 100644
--- a/src/quickwidgets/qquickwidget.cpp
+++ b/src/quickwidgets/qquickwidget.cpp
@@ -184,15 +184,15 @@ void QQuickWidgetPrivate::handleWindowChange()
 }
 
 QQuickWidgetPrivate::QQuickWidgetPrivate()
-    : root(0)
-    , component(0)
-    , offscreenWindow(0)
-    , offscreenSurface(0)
-    , renderControl(0)
+    : root(nullptr)
+    , component(nullptr)
+    , offscreenWindow(nullptr)
+    , offscreenSurface(nullptr)
+    , renderControl(nullptr)
 #if QT_CONFIG(opengl)
-    , fbo(0)
-    , resolvedFbo(0)
-    , context(0)
+    , fbo(nullptr)
+    , resolvedFbo(nullptr)
+    , context(nullptr)
 #endif
     , resizeMode(QQuickWidget::SizeViewToRootObject)
     , initialSize(0,0)
@@ -233,11 +233,11 @@ void QQuickWidgetPrivate::execute()
 
     if (root) {
         delete root;
-        root = 0;
+        root = nullptr;
     }
     if (component) {
         delete component;
-        component = 0;
+        component = nullptr;
     }
     if (!source.isEmpty()) {
         QML_MEMORY_SCOPE_URL(engine.data()->baseUrl().resolved(source));
@@ -500,7 +500,7 @@ QImage QQuickWidgetPrivate::grabFramebuffer()
 
 */
 QQuickWidget::QQuickWidget(QWidget *parent)
-: QWidget(*(new QQuickWidgetPrivate), parent, 0)
+: QWidget(*(new QQuickWidgetPrivate), parent, nullptr)
 {
     setMouseTracking(true);
     setFocusPolicy(Qt::StrongFocus);
@@ -528,7 +528,7 @@ QQuickWidget::QQuickWidget(const QUrl &source, QWidget *parent)
   \sa Status, status(), errors()
 */
 QQuickWidget::QQuickWidget(QQmlEngine* engine, QWidget *parent)
-    : QWidget(*(new QQuickWidgetPrivate), parent, 0)
+    : QWidget(*(new QQuickWidgetPrivate), parent, nullptr)
 {
     setMouseTracking(true);
     setFocusPolicy(Qt::StrongFocus);
@@ -544,7 +544,7 @@ QQuickWidget::~QQuickWidget()
     // be a child of the QQuickWidgetPrivate, and will be destroyed by its dtor
     Q_D(QQuickWidget);
     delete d->root;
-    d->root = 0;
+    d->root = nullptr;
 }
 
 /*!
@@ -588,7 +588,7 @@ void QQuickWidget::setContent(const QUrl& url, QQmlComponent *component, QObject
     if (d->component && d->component->isError()) {
         const QList<QQmlError> errorList = d->component->errors();
         for (const QQmlError &error : errorList) {
-            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), 0).warning()
+            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), nullptr).warning()
                     << error;
         }
         emit statusChanged(status());
@@ -797,7 +797,7 @@ void QQuickWidgetPrivate::updateSize()
 void QQuickWidgetPrivate::updatePosition()
 {
     Q_Q(QQuickWidget);
-    if (offscreenWindow == 0)
+    if (offscreenWindow == nullptr)
         return;
 
     const QPoint &pos = q->mapToGlobal(QPoint(0, 0));
@@ -871,7 +871,7 @@ void QQuickWidgetPrivate::createContext()
         if (!context->create()) {
             const bool isEs = context->isOpenGLES();
             delete context;
-            context = 0;
+            context = nullptr;
             handleContextCreationFailure(offscreenWindow->requestedFormat(), isEs);
             return;
         }
@@ -897,10 +897,10 @@ void QQuickWidgetPrivate::createContext()
 void QQuickWidgetPrivate::destroyContext()
 {
     delete offscreenSurface;
-    offscreenSurface = 0;
+    offscreenSurface = nullptr;
 #if QT_CONFIG(opengl)
     delete context;
-    context = 0;
+    context = nullptr;
 #endif
 }
 
@@ -1010,9 +1010,9 @@ void QQuickWidget::destroyFramebufferObject()
 
 #if QT_CONFIG(opengl)
     delete d->fbo;
-    d->fbo = 0;
+    d->fbo = nullptr;
     delete d->resolvedFbo;
-    d->resolvedFbo = 0;
+    d->resolvedFbo = nullptr;
 #endif
 }
 
@@ -1033,7 +1033,7 @@ void QQuickWidget::continueExecute()
     if (d->component->isError()) {
         const QList<QQmlError> errorList = d->component->errors();
         for (const QQmlError &error : errorList) {
-            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), 0).warning()
+            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), nullptr).warning()
                     << error;
         }
         emit statusChanged(status());
@@ -1045,7 +1045,7 @@ void QQuickWidget::continueExecute()
     if (d->component->isError()) {
         const QList<QQmlError> errorList = d->component->errors();
         for (const QQmlError &error : errorList) {
-            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), 0).warning()
+            QMessageLogger(error.url().toString().toLatin1().constData(), error.line(), nullptr).warning()
                     << error;
         }
         emit statusChanged(status());
@@ -1078,7 +1078,7 @@ void QQuickWidgetPrivate::setRootObject(QObject *obj)
                    << "Ensure your QML code is written for QtQuick 2, and uses a root that is or" << endl
                    << "inherits from QtQuick's Item (not a Timer, QtObject, etc)." << endl;
         delete obj;
-        root = 0;
+        root = nullptr;
     }
     if (root) {
         initialSize = rootObjectSize();
author	Shawn Rutledge <shawn.rutledge@qt.io>	2018-02-21 10:41:54 +0100
committer	Shawn Rutledge <shawn.rutledge@qt.io>	2018-02-26 07:13:18 +0000
commit	499ec43937e926e4f2fa57a9baa455fcb3862262 (patch)
tree	206c90d47387f8322b68f5e3db613189397e1af3 /src
parent	53d1e9ed21d25e65a2f13606af479838f5f21fe7 (diff)