14 files changed, 121 insertions, 121 deletions

diff --git a/src/corelib/kernel/qabstracteventdispatcher.h b/src/corelib/kernel/qabstracteventdispatcher.h
index c80f7d3d08..eb357cefe5 100644
--- a/src/corelib/kernel/qabstracteventdispatcher.h
+++ b/src/corelib/kernel/qabstracteventdispatcher.h
@@ -64,10 +64,10 @@ public:
         { }
     };
 
-    explicit QAbstractEventDispatcher(QObject *parent = 0);
+    explicit QAbstractEventDispatcher(QObject *parent = Q_NULLPTR);
     ~QAbstractEventDispatcher();
 
-    static QAbstractEventDispatcher *instance(QThread *thread = 0);
+    static QAbstractEventDispatcher *instance(QThread *thread = Q_NULLPTR);
 
     virtual bool processEvents(QEventLoop::ProcessEventsFlags flags) = 0;
     virtual bool hasPendingEvents() = 0; // ### Qt6: remove, mark final or make protected
diff --git a/src/corelib/kernel/qcoreapplication.h b/src/corelib/kernel/qcoreapplication.h
index 1cd835daae..1009fe8439 100644
--- a/src/corelib/kernel/qcoreapplication.h
+++ b/src/corelib/kernel/qcoreapplication.h
@@ -117,7 +117,7 @@ public:
 
     static bool sendEvent(QObject *receiver, QEvent *event);
     static void postEvent(QObject *receiver, QEvent *event, int priority = Qt::NormalEventPriority);
-    static void sendPostedEvents(QObject *receiver = 0, int event_type = 0);
+    static void sendPostedEvents(QObject *receiver = Q_NULLPTR, int event_type = 0);
     static void removePostedEvents(QObject *receiver, int eventType = 0);
 #if QT_DEPRECATED_SINCE(5, 3)
     QT_DEPRECATED static bool hasPendingEvents();
@@ -149,7 +149,7 @@ public:
 
     static QString translate(const char * context,
                              const char * key,
-                             const char * disambiguation = 0,
+                             const char * disambiguation = Q_NULLPTR,
                              int n = -1);
 #if QT_DEPRECATED_SINCE(5, 0)
     enum Encoding { UnicodeUTF8, Latin1, DefaultCodec = UnicodeUTF8, CodecForTr = UnicodeUTF8 };
@@ -231,13 +231,13 @@ inline bool QCoreApplication::sendSpontaneousEvent(QObject *receiver, QEvent *ev
 #  define QT_DECLARE_DEPRECATED_TR_FUNCTIONS(context)
 #else
 #  define QT_DECLARE_DEPRECATED_TR_FUNCTIONS(context) \
-    QT_DEPRECATED static inline QString trUtf8(const char *sourceText, const char *disambiguation = 0, int n = -1) \
+    QT_DEPRECATED static inline QString trUtf8(const char *sourceText, const char *disambiguation = Q_NULLPTR, int n = -1) \
         { return QCoreApplication::translate(#context, sourceText, disambiguation, n); }
 #endif
 
 #define Q_DECLARE_TR_FUNCTIONS(context) \
 public: \
-    static inline QString tr(const char *sourceText, const char *disambiguation = 0, int n = -1) \
+    static inline QString tr(const char *sourceText, const char *disambiguation = Q_NULLPTR, int n = -1) \
         { return QCoreApplication::translate(#context, sourceText, disambiguation, n); } \
     QT_DECLARE_DEPRECATED_TR_FUNCTIONS(context) \
 private:
diff --git a/src/corelib/kernel/qeventloop.h b/src/corelib/kernel/qeventloop.h
index 99c0cd50ff..375a63abdd 100644
--- a/src/corelib/kernel/qeventloop.h
+++ b/src/corelib/kernel/qeventloop.h
@@ -47,7 +47,7 @@ class Q_CORE_EXPORT QEventLoop : public QObject
     Q_DECLARE_PRIVATE(QEventLoop)
 
 public:
-    explicit QEventLoop(QObject *parent = 0);
+    explicit QEventLoop(QObject *parent = Q_NULLPTR);
     ~QEventLoop();
 
     enum ProcessEventsFlag {
diff --git a/src/corelib/kernel/qmetaobject.h b/src/corelib/kernel/qmetaobject.h
index b522a211bb..1a282d3261 100644
--- a/src/corelib/kernel/qmetaobject.h
+++ b/src/corelib/kernel/qmetaobject.h
@@ -48,7 +48,7 @@ template <typename T> class QList;
 class Q_CORE_EXPORT QMetaMethod
 {
 public:
-    Q_DECL_CONSTEXPR inline QMetaMethod() : mobj(0),handle(0) {}
+    Q_DECL_CONSTEXPR inline QMetaMethod() : mobj(Q_NULLPTR), handle(0) {}
 
     QByteArray methodSignature() const;
     QByteArray name() const;
@@ -74,7 +74,7 @@ public:
     bool invoke(QObject *object,
                 Qt::ConnectionType connectionType,
                 QGenericReturnArgument returnValue,
-                QGenericArgument val0 = QGenericArgument(0),
+                QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                 QGenericArgument val1 = QGenericArgument(),
                 QGenericArgument val2 = QGenericArgument(),
                 QGenericArgument val3 = QGenericArgument(),
@@ -86,7 +86,7 @@ public:
                 QGenericArgument val9 = QGenericArgument()) const;
     inline bool invoke(QObject *object,
                        QGenericReturnArgument returnValue,
-                       QGenericArgument val0 = QGenericArgument(0),
+                       QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                        QGenericArgument val1 = QGenericArgument(),
                        QGenericArgument val2 = QGenericArgument(),
                        QGenericArgument val3 = QGenericArgument(),
@@ -102,7 +102,7 @@ public:
     }
     inline bool invoke(QObject *object,
                        Qt::ConnectionType connectionType,
-                       QGenericArgument val0 = QGenericArgument(0),
+                       QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                        QGenericArgument val1 = QGenericArgument(),
                        QGenericArgument val2 = QGenericArgument(),
                        QGenericArgument val3 = QGenericArgument(),
@@ -117,7 +117,7 @@ public:
                       val0, val1, val2, val3, val4, val5, val6, val7, val8, val9);
     }
     inline bool invoke(QObject *object,
-                       QGenericArgument val0 = QGenericArgument(0),
+                       QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                        QGenericArgument val1 = QGenericArgument(),
                        QGenericArgument val2 = QGenericArgument(),
                        QGenericArgument val3 = QGenericArgument(),
@@ -134,7 +134,7 @@ public:
 
     bool invokeOnGadget(void *gadget,
                 QGenericReturnArgument returnValue,
-                QGenericArgument val0 = QGenericArgument(0),
+                QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                 QGenericArgument val1 = QGenericArgument(),
                 QGenericArgument val2 = QGenericArgument(),
                 QGenericArgument val3 = QGenericArgument(),
@@ -145,7 +145,7 @@ public:
                 QGenericArgument val8 = QGenericArgument(),
                 QGenericArgument val9 = QGenericArgument()) const;
     inline bool invokeOnGadget(void *gadget,
-                       QGenericArgument val0 = QGenericArgument(0),
+                       QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                        QGenericArgument val1 = QGenericArgument(),
                        QGenericArgument val2 = QGenericArgument(),
                        QGenericArgument val3 = QGenericArgument(),
@@ -160,7 +160,7 @@ public:
                       val0, val1, val2, val3, val4, val5, val6, val7, val8, val9);
     }
 
-    inline bool isValid() const { return mobj != 0; }
+    inline bool isValid() const { return mobj != Q_NULLPTR; }
 
 #ifdef Q_QDOC
     static QMetaMethod fromSignal(PointerToMemberFunction signal);
@@ -204,7 +204,7 @@ inline bool operator!=(const QMetaMethod &m1, const QMetaMethod &m2)
 class Q_CORE_EXPORT QMetaEnum
 {
 public:
-    Q_DECL_CONSTEXPR inline QMetaEnum() : mobj(0),handle(0) {}
+    Q_DECL_CONSTEXPR inline QMetaEnum() : mobj(Q_NULLPTR), handle(0) {}
 
     const char *name() const;
     bool isFlag() const;
@@ -215,14 +215,14 @@ public:
 
     const char *scope() const;
 
-    int keyToValue(const char *key, bool *ok = 0) const;
+    int keyToValue(const char *key, bool *ok = Q_NULLPTR) const;
     const char* valueToKey(int value) const;
-    int keysToValue(const char * keys, bool *ok = 0) const;
+    int keysToValue(const char * keys, bool *ok = Q_NULLPTR) const;
     QByteArray valueToKeys(int value) const;
 
     inline const QMetaObject *enclosingMetaObject() const { return mobj; }
 
-    inline bool isValid() const { return name() != 0; }
+    inline bool isValid() const { return name() != Q_NULLPTR; }
 
     template<typename T> static QMetaEnum fromType() {
         Q_STATIC_ASSERT_X(QtPrivate::IsQEnumHelper<T>::Value,
@@ -253,11 +253,11 @@ public:
     bool isReadable() const;
     bool isWritable() const;
     bool isResettable() const;
-    bool isDesignable(const QObject *obj = 0) const;
-    bool isScriptable(const QObject *obj = 0) const;
-    bool isStored(const QObject *obj = 0) const;
-    bool isEditable(const QObject *obj = 0) const;
-    bool isUser(const QObject *obj = 0) const;
+    bool isDesignable(const QObject *obj = Q_NULLPTR) const;
+    bool isScriptable(const QObject *obj = Q_NULLPTR) const;
+    bool isStored(const QObject *obj = Q_NULLPTR) const;
+    bool isEditable(const QObject *obj = Q_NULLPTR) const;
+    bool isUser(const QObject *obj = Q_NULLPTR) const;
     bool isConstant() const;
     bool isFinal() const;
 
@@ -297,7 +297,7 @@ private:
 class Q_CORE_EXPORT QMetaClassInfo
 {
 public:
-    Q_DECL_CONSTEXPR inline QMetaClassInfo() : mobj(0),handle(0) {}
+    Q_DECL_CONSTEXPR inline QMetaClassInfo() : mobj(Q_NULLPTR), handle(0) {}
     const char *name() const;
     const char *value() const;
     inline const QMetaObject *enclosingMetaObject() const { return mobj; }
diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h
index 1b214e9f74..988630d90f 100644
--- a/src/corelib/kernel/qmetatype.h
+++ b/src/corelib/kernel/qmetatype.h
@@ -229,7 +229,7 @@ struct AbstractDebugStreamFunction
 {
     typedef void (*Stream)(const AbstractDebugStreamFunction *, QDebug&, const void *);
     typedef void (*Destroy)(AbstractDebugStreamFunction *);
-    explicit AbstractDebugStreamFunction(Stream s = 0, Destroy d = 0)
+    explicit AbstractDebugStreamFunction(Stream s = Q_NULLPTR, Destroy d = Q_NULLPTR)
         : stream(s), destroy(d) {}
     Q_DISABLE_COPY(AbstractDebugStreamFunction)
     Stream stream;
@@ -259,7 +259,7 @@ struct AbstractComparatorFunction
     typedef bool (*LessThan)(const AbstractComparatorFunction *, const void *, const void *);
     typedef bool (*Equals)(const AbstractComparatorFunction *, const void *, const void *);
     typedef void (*Destroy)(AbstractComparatorFunction *);
-    explicit AbstractComparatorFunction(LessThan lt = 0, Equals e = 0, Destroy d = 0)
+    explicit AbstractComparatorFunction(LessThan lt = Q_NULLPTR, Equals e = Q_NULLPTR, Destroy d = Q_NULLPTR)
         : lessThan(lt), equals(e), destroy(d) {}
     Q_DISABLE_COPY(AbstractComparatorFunction)
     LessThan lessThan;
@@ -296,7 +296,7 @@ template<typename T>
 struct BuiltInEqualsComparatorFunction : public AbstractComparatorFunction
 {
     BuiltInEqualsComparatorFunction()
-        : AbstractComparatorFunction(0, equals, destroy) {}
+        : AbstractComparatorFunction(Q_NULLPTR, equals, destroy) {}
     static bool equals(const AbstractComparatorFunction *, const void *l, const void *r)
     {
         const T *lhs = static_cast<const T *>(l);
@@ -313,7 +313,7 @@ struct BuiltInEqualsComparatorFunction : public AbstractComparatorFunction
 struct AbstractConverterFunction
 {
     typedef bool (*Converter)(const AbstractConverterFunction *, const void *, void*);
-    explicit AbstractConverterFunction(Converter c = 0)
+    explicit AbstractConverterFunction(Converter c = Q_NULLPTR)
         : convert(c) {}
     Q_DISABLE_COPY(AbstractConverterFunction)
     Converter convert;
@@ -510,9 +510,9 @@ public:
     static TypeFlags typeFlags(int type);
     static const QMetaObject *metaObjectForType(int type);
     static bool isRegistered(int type);
-    static void *create(int type, const void *copy = 0);
+    static void *create(int type, const void *copy = Q_NULLPTR);
 #if QT_DEPRECATED_SINCE(5, 0)
-    QT_DEPRECATED static void *construct(int type, const void *copy = 0)
+    QT_DEPRECATED static void *construct(int type, const void *copy = Q_NULLPTR)
     { return create(type, copy); }
 #endif
     static void destroy(int type, void *data);
@@ -533,9 +533,9 @@ public:
     inline TypeFlags flags() const;
     inline const QMetaObject *metaObject() const;
 
-    inline void *create(const void *copy = 0) const;
+    inline void *create(const void *copy = Q_NULLPTR) const;
     inline void destroy(void *data) const;
-    inline void *construct(void *where, const void *copy = 0) const;
+    inline void *construct(void *where, const void *copy = Q_NULLPTR) const;
     inline void destruct(void *data) const;
 
 public:
@@ -611,7 +611,7 @@ public:
         return registerConverterFunction(&f, fromTypeId, toTypeId);
     }
 
-    // member function as in "double QString::toDouble(bool *ok = 0) const"
+    // member function as in "double QString::toDouble(bool *ok = Q_NULLPTR) const"
     template<typename From, typename To>
     static bool registerConverter(To(From::*function)(bool*) const)
     {
@@ -674,9 +674,9 @@ private:
     uint sizeExtended() const;
     QMetaType::TypeFlags flagsExtended() const;
     const QMetaObject *metaObjectExtended() const;
-    void *createExtended(const void *copy = 0) const;
+    void *createExtended(const void *copy = Q_NULLPTR) const;
     void destroyExtended(void *data) const;
-    void *constructExtended(void *where, const void *copy = 0) const;
+    void *constructExtended(void *where, const void *copy = Q_NULLPTR) const;
     void destructExtended(void *data) const;
 
     static bool registerComparatorFunction(const QtPrivate::AbstractComparatorFunction *f, int type);
@@ -771,7 +771,7 @@ struct QMetaTypeFunctionHelper {
 template <typename T>
 struct QMetaTypeFunctionHelper<T, /* Accepted */ false> {
     static void Destruct(void *) {}
-    static void *Construct(void *, const void *) { return 0; }
+    static void *Construct(void *, const void *) { return Q_NULLPTR; }
 #ifndef QT_NO_DATASTREAM
     static void Save(QDataStream &, const void *) {}
     static void Load(QDataStream &, void *) {}
@@ -1009,7 +1009,7 @@ public:
 public:
     template<class T> QSequentialIterableImpl(const T*p)
       : _iterable(p)
-      , _iterator(0)
+      , _iterator(Q_NULLPTR)
       , _metaType_id(qMetaTypeId<typename T::value_type>())
       , _metaType_flags(QTypeInfo<typename T::value_type>::isPointer)
       , _iteratorCapabilities(ContainerAPI<T>::IteratorCapabilities)
@@ -1026,20 +1026,20 @@ public:
     }
 
     QSequentialIterableImpl()
-      : _iterable(0)
-      , _iterator(0)
+      : _iterable(Q_NULLPTR)
+      , _iterator(Q_NULLPTR)
       , _metaType_id(QMetaType::UnknownType)
       , _metaType_flags(0)
       , _iteratorCapabilities(0)
-      , _size(0)
-      , _at(0)
-      , _moveToBegin(0)
-      , _moveToEnd(0)
-      , _advance(0)
-      , _get(0)
-      , _destroyIter(0)
-      , _equalIter(0)
-      , _copyIter(0)
+      , _size(Q_NULLPTR)
+      , _at(Q_NULLPTR)
+      , _moveToBegin(Q_NULLPTR)
+      , _moveToEnd(Q_NULLPTR)
+      , _advance(Q_NULLPTR)
+      , _get(Q_NULLPTR)
+      , _destroyIter(Q_NULLPTR)
+      , _equalIter(Q_NULLPTR)
+      , _copyIter(Q_NULLPTR)
     {
     }
 
@@ -1195,21 +1195,21 @@ public:
     }
 
     QAssociativeIterableImpl()
-      : _iterable(0)
+      : _iterable(Q_NULLPTR)
       , _metaType_id_key(QMetaType::UnknownType)
       , _metaType_flags_key(0)
       , _metaType_id_value(QMetaType::UnknownType)
       , _metaType_flags_value(0)
-      , _size(0)
-      , _find(0)
-      , _begin(0)
-      , _end(0)
-      , _advance(0)
-      , _getKey(0)
-      , _getValue(0)
-      , _destroyIter(0)
-      , _equalIter(0)
-      , _copyIter(0)
+      , _size(Q_NULLPTR)
+      , _find(Q_NULLPTR)
+      , _begin(Q_NULLPTR)
+      , _end(Q_NULLPTR)
+      , _advance(Q_NULLPTR)
+      , _getKey(Q_NULLPTR)
+      , _getValue(Q_NULLPTR)
+      , _destroyIter(Q_NULLPTR)
+      , _equalIter(Q_NULLPTR)
+      , _copyIter(Q_NULLPTR)
     {
     }
 
@@ -1277,9 +1277,9 @@ public:
     }
 
     QPairVariantInterfaceImpl()
-      : _pair(0)
-      , _getFirst(0)
-      , _getSecond(0)
+      : _pair(Q_NULLPTR)
+      , _getFirst(Q_NULLPTR)
+      , _getSecond(Q_NULLPTR)
     {
     }
 
@@ -1354,7 +1354,7 @@ namespace QtPrivate
 #endif
         static no_type checkType(...);
         Q_STATIC_ASSERT_X(sizeof(T), "Type argument of Q_DECLARE_METATYPE(T*) must be fully defined");
-        enum { Value = sizeof(checkType(static_cast<T*>(0))) == sizeof(yes_type) };
+        enum { Value = sizeof(checkType(static_cast<T*>(Q_NULLPTR))) == sizeof(yes_type) };
     };
 
     template<typename T, typename Enable = void>
@@ -1391,7 +1391,7 @@ QT_WARNING_POP
     template<typename T, typename Enable = void>
     struct MetaObjectForType
     {
-        static inline const QMetaObject *value() { return 0; }
+        static inline const QMetaObject *value() { return Q_NULLPTR; }
     };
     template<>
     struct MetaObjectForType<void>
@@ -1692,7 +1692,7 @@ int qRegisterNormalizedMetaType(const QT_PREPEND_NAMESPACE(QByteArray) &normaliz
 template <typename T>
 int qRegisterMetaType(const char *typeName
 #ifndef Q_QDOC
-    , T * dummy = 0
+    , T * dummy = Q_NULLPTR
     , typename QtPrivate::MetaTypeDefinedHelper<T, QMetaTypeId2<T>::Defined && !QMetaTypeId2<T>::IsBuiltIn>::DefinedType defined = QtPrivate::MetaTypeDefinedHelper<T, QMetaTypeId2<T>::Defined && !QMetaTypeId2<T>::IsBuiltIn>::Defined
 #endif
 )
@@ -1709,7 +1709,7 @@ int qRegisterMetaType(const char *typeName
 template <typename T>
 void qRegisterMetaTypeStreamOperators(const char *typeName
 #ifndef Q_QDOC
-    , T * /* dummy */ = 0
+    , T * /* dummy */ = Q_NULLPTR
 #endif
 )
 {
@@ -2095,7 +2095,7 @@ inline QMetaType::QMetaType(const ExtensionFlag extensionFlags, const QMetaTypeI
     , m_loadOp(loadOp)
     , m_constructor(constructor)
     , m_destructor(destructor)
-    , m_extension(0)
+    , m_extension(Q_NULLPTR)
     , m_size(size)
     , m_typeFlags(theTypeFlags)
     , m_extensionFlags(extensionFlags)
diff --git a/src/corelib/kernel/qobject.h b/src/corelib/kernel/qobject.h
index 5f61dd984f..64c5b58fd4 100644
--- a/src/corelib/kernel/qobject.h
+++ b/src/corelib/kernel/qobject.h
@@ -110,23 +110,23 @@ class Q_CORE_EXPORT QObject
     Q_DECLARE_PRIVATE(QObject)
 
 public:
-    Q_INVOKABLE explicit QObject(QObject *parent=0);
+    Q_INVOKABLE explicit QObject(QObject *parent=Q_NULLPTR);
     virtual ~QObject();
 
     virtual bool event(QEvent *);
     virtual bool eventFilter(QObject *, QEvent *);
 
 #ifdef Q_QDOC
-    static QString tr(const char *sourceText, const char *comment = 0, int n = -1);
-    static QString trUtf8(const char *sourceText, const char *comment = 0, int n = -1);
+    static QString tr(const char *sourceText, const char *comment = Q_NULLPTR, int n = -1);
+    static QString trUtf8(const char *sourceText, const char *comment = Q_NULLPTR, int n = -1);
     virtual const QMetaObject *metaObject() const;
     static const QMetaObject staticMetaObject;
 #endif
 #ifdef QT_NO_TRANSLATION
-    static QString tr(const char *sourceText, const char * = 0, int = -1)
+    static QString tr(const char *sourceText, const char * = Q_NULLPTR, int = -1)
         { return QString::fromUtf8(sourceText); }
 #if QT_DEPRECATED_SINCE(5, 0)
-    QT_DEPRECATED static QString trUtf8(const char *sourceText, const char * = 0, int = -1)
+    QT_DEPRECATED static QString trUtf8(const char *sourceText, const char * = Q_NULLPTR, int = -1)
         { return QString::fromUtf8(sourceText); }
 #endif
 #endif //QT_NO_TRANSLATION
@@ -228,7 +228,7 @@ public:
         Q_STATIC_ASSERT_X((QtPrivate::AreArgumentsCompatible<typename SlotType::ReturnType, typename SignalType::ReturnType>::value),
                           "Return type of the slot is not compatible with the return type of the signal.");
 
-        const int *types = 0;
+        const int *types = Q_NULLPTR;
         if (type == Qt::QueuedConnection || type == Qt::BlockingQueuedConnection)
             types = QtPrivate::ConnectionTypes<typename SignalType::Arguments>::types();
 
@@ -268,11 +268,11 @@ public:
         Q_STATIC_ASSERT_X((QtPrivate::AreArgumentsCompatible<typename SlotType::ReturnType, typename SignalType::ReturnType>::value),
                           "Return type of the slot is not compatible with the return type of the signal.");
 
-        const int *types = 0;
+        const int *types = Q_NULLPTR;
         if (type == Qt::QueuedConnection || type == Qt::BlockingQueuedConnection)
             types = QtPrivate::ConnectionTypes<typename SignalType::Arguments>::types();
 
-        return connectImpl(sender, reinterpret_cast<void **>(&signal), context, 0,
+        return connectImpl(sender, reinterpret_cast<void **>(&signal), context, Q_NULLPTR,
                            new QtPrivate::QStaticSlotObject<Func2,
                                                  typename QtPrivate::List_Left<typename SignalType::Arguments, SlotType::ArgumentCount>::Value,
                                                  typename SignalType::ReturnType>(slot),
@@ -338,11 +338,11 @@ public:
         Q_STATIC_ASSERT_X(QtPrivate::HasQ_OBJECT_Macro<typename SignalType::Object>::Value,
                           "No Q_OBJECT in the class with the signal");
 
-        const int *types = 0;
+        const int *types = Q_NULLPTR;
         if (type == Qt::QueuedConnection || type == Qt::BlockingQueuedConnection)
             types = QtPrivate::ConnectionTypes<typename SignalType::Arguments>::types();
 
-        return connectImpl(sender, reinterpret_cast<void **>(&signal), context, 0,
+        return connectImpl(sender, reinterpret_cast<void **>(&signal), context, Q_NULLPTR,
                            new QtPrivate::QFunctorSlotObject<Func2, SlotArgumentCount,
                                 typename QtPrivate::List_Left<typename SignalType::Arguments, SlotArgumentCount>::Value,
                                 typename SignalType::ReturnType>(slot),
@@ -354,11 +354,11 @@ public:
                            const QObject *receiver, const char *member);
     static bool disconnect(const QObject *sender, const QMetaMethod &signal,
                            const QObject *receiver, const QMetaMethod &member);
-    inline bool disconnect(const char *signal = 0,
-                           const QObject *receiver = 0, const char *member = 0) const
+    inline bool disconnect(const char *signal = Q_NULLPTR,
+                           const QObject *receiver = Q_NULLPTR, const char *member = Q_NULLPTR) const
         { return disconnect(this, signal, receiver, member); }
-    inline bool disconnect(const QObject *receiver, const char *member = 0) const
-        { return disconnect(this, 0, receiver, member); }
+    inline bool disconnect(const QObject *receiver, const char *member = Q_NULLPTR) const
+        { return disconnect(this, Q_NULLPTR, receiver, member); }
     static bool disconnect(const QMetaObject::Connection &);
 
 #ifdef Q_QDOC
@@ -385,7 +385,7 @@ public:
     static inline bool disconnect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal,
                                   const QObject *receiver, void **zero)
     {
-        // This is the overload for when one wish to disconnect a signal from any slot. (slot=0)
+        // This is the overload for when one wish to disconnect a signal from any slot. (slot=Q_NULLPTR)
         // Since the function template parameter cannot be deduced from '0', we use a
         // dummy void ** parameter that must be equal to 0
         Q_ASSERT(!zero);
@@ -412,14 +412,14 @@ public:
 #endif // QT_NO_USERDATA
 
 Q_SIGNALS:
-    void destroyed(QObject * = 0);
+    void destroyed(QObject * = Q_NULLPTR);
     void objectNameChanged(const QString &objectName, QPrivateSignal);
 
 public:
     inline QObject *parent() const { return d_ptr->parent; }
 
     inline bool inherits(const char *classname) const
-        { return const_cast<QObject *>(this)->qt_metacast(classname) != 0; }
+        { return const_cast<QObject *>(this)->qt_metacast(classname) != Q_NULLPTR; }
 
 public Q_SLOTS:
     void deleteLater();
@@ -438,7 +438,7 @@ protected:
     virtual void disconnectNotify(const QMetaMethod &signal);
 
 protected:
-    QObject(QObjectPrivate &dd, QObject *parent = 0);
+    QObject(QObjectPrivate &dd, QObject *parent = Q_NULLPTR);
 
 protected:
     QScopedPointer<QObjectData> d_ptr;
@@ -529,16 +529,16 @@ inline T qobject_cast(const QObject *object)
 
 
 template <class T> inline const char * qobject_interface_iid()
-{ return 0; }
+{ return Q_NULLPTR; }
 
 #ifndef Q_MOC_RUN
 #  define Q_DECLARE_INTERFACE(IFace, IId) \
     template <> inline const char *qobject_interface_iid<IFace *>() \
     { return IId; } \
     template <> inline IFace *qobject_cast<IFace *>(QObject *object) \
-    { return reinterpret_cast<IFace *>((object ? object->qt_metacast(IId) : 0)); } \
+    { return reinterpret_cast<IFace *>((object ? object->qt_metacast(IId) : Q_NULLPTR)); } \
     template <> inline IFace *qobject_cast<IFace *>(const QObject *object) \
-    { return reinterpret_cast<IFace *>((object ? const_cast<QObject *>(object)->qt_metacast(IId) : 0)); }
+    { return reinterpret_cast<IFace *>((object ? const_cast<QObject *>(object)->qt_metacast(IId) : Q_NULLPTR)); }
 #endif // Q_MOC_RUN
 
 #ifndef QT_NO_DEBUG_STREAM
@@ -584,7 +584,7 @@ QSignalBlocker::QSignalBlocker(QSignalBlocker &&other) Q_DECL_NOTHROW
       m_blocked(other.m_blocked),
       m_inhibited(other.m_inhibited)
 {
-    other.m_o = 0;
+    other.m_o = Q_NULLPTR;
 }
 
 QSignalBlocker &QSignalBlocker::operator=(QSignalBlocker &&other) Q_DECL_NOTHROW
@@ -598,7 +598,7 @@ QSignalBlocker &QSignalBlocker::operator=(QSignalBlocker &&other) Q_DECL_NOTHROW
         m_blocked = other.m_blocked;
         m_inhibited = other.m_inhibited;
         // disable other:
-        other.m_o = 0;
+        other.m_o = Q_NULLPTR;
     }
     return *this;
 }
diff --git a/src/corelib/kernel/qobject_impl.h b/src/corelib/kernel/qobject_impl.h
index 4d9e42ba76..09d52584c4 100644
--- a/src/corelib/kernel/qobject_impl.h
+++ b/src/corelib/kernel/qobject_impl.h
@@ -90,9 +90,9 @@ namespace QtPrivate {
     { enum { Value = QMetaTypeId2<Arg>::Defined && TypesAreDeclaredMetaType<List<Tail...>>::Value }; };
 
     template <typename ArgList, bool Declared = TypesAreDeclaredMetaType<ArgList>::Value > struct ConnectionTypes
-    { static const int *types() { return 0; } };
+    { static const int *types() { return Q_NULLPTR; } };
     template <> struct ConnectionTypes<List<>, true>
-    { static const int *types() { return 0; } };
+    { static const int *types() { return Q_NULLPTR; } };
     template <typename... Args> struct ConnectionTypes<List<Args...>, true>
     { static const int *types() { static const int t[sizeof...(Args) + 1] = { (QtPrivate::QMetaTypeIdHelper<Args>::qt_metatype_id())..., 0 }; return t; } };
 #endif
@@ -118,10 +118,10 @@ namespace QtPrivate {
 
         inline int ref() Q_DECL_NOTHROW { return m_ref.ref(); }
         inline void destroyIfLastRef() Q_DECL_NOTHROW
-        { if (!m_ref.deref()) m_impl(Destroy, this, 0, 0, 0); }
+        { if (!m_ref.deref()) m_impl(Destroy, this, Q_NULLPTR, Q_NULLPTR, Q_NULLPTR); }
 
-        inline bool compare(void **a) { bool ret; m_impl(Compare, this, 0, a, &ret); return ret; }
-        inline void call(QObject *r, void **a)  { m_impl(Call,    this, r, a, 0); }
+        inline bool compare(void **a) { bool ret; m_impl(Compare, this, Q_NULLPTR, a, &ret); return ret; }
+        inline void call(QObject *r, void **a)  { m_impl(Call,    this, r, a, Q_NULLPTR); }
     protected:
         ~QSlotObjectBase() {}
     private:
diff --git a/src/corelib/kernel/qobjectdefs.h b/src/corelib/kernel/qobjectdefs.h
index a64f2fd2b1..837c5e4a1e 100644
--- a/src/corelib/kernel/qobjectdefs.h
+++ b/src/corelib/kernel/qobjectdefs.h
@@ -258,7 +258,7 @@ class QMetaClassInfo;
 class Q_CORE_EXPORT QGenericArgument
 {
 public:
-    inline QGenericArgument(const char *aName = 0, const void *aData = 0)
+    inline QGenericArgument(const char *aName = Q_NULLPTR, const void *aData = Q_NULLPTR)
         : _data(aData), _name(aName) {}
     inline void *data() const { return const_cast<void *>(_data); }
     inline const char *name() const { return _name; }
@@ -271,7 +271,7 @@ private:
 class Q_CORE_EXPORT QGenericReturnArgument: public QGenericArgument
 {
 public:
-    inline QGenericReturnArgument(const char *aName = 0, void *aData = 0)
+    inline QGenericReturnArgument(const char *aName = Q_NULLPTR, void *aData = Q_NULLPTR)
         : QGenericArgument(aName, aData)
         {}
 };
@@ -351,7 +351,7 @@ struct Q_CORE_EXPORT QMetaObject
     // internal index-based connect
     static Connection connect(const QObject *sender, int signal_index,
                         const QObject *receiver, int method_index,
-                        int type = 0, int *types = 0);
+                        int type = 0, int *types = Q_NULLPTR);
     // internal index-based disconnect
     static bool disconnect(const QObject *sender, int signal_index,
                            const QObject *receiver, int method_index);
@@ -368,7 +368,7 @@ struct Q_CORE_EXPORT QMetaObject
     static bool invokeMethod(QObject *obj, const char *member,
                              Qt::ConnectionType,
                              QGenericReturnArgument ret,
-                             QGenericArgument val0 = QGenericArgument(0),
+                             QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                              QGenericArgument val1 = QGenericArgument(),
                              QGenericArgument val2 = QGenericArgument(),
                              QGenericArgument val3 = QGenericArgument(),
@@ -381,7 +381,7 @@ struct Q_CORE_EXPORT QMetaObject
 
     static inline bool invokeMethod(QObject *obj, const char *member,
                              QGenericReturnArgument ret,
-                             QGenericArgument val0 = QGenericArgument(0),
+                             QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                              QGenericArgument val1 = QGenericArgument(),
                              QGenericArgument val2 = QGenericArgument(),
                              QGenericArgument val3 = QGenericArgument(),
@@ -398,7 +398,7 @@ struct Q_CORE_EXPORT QMetaObject
 
     static inline bool invokeMethod(QObject *obj, const char *member,
                              Qt::ConnectionType type,
-                             QGenericArgument val0 = QGenericArgument(0),
+                             QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                              QGenericArgument val1 = QGenericArgument(),
                              QGenericArgument val2 = QGenericArgument(),
                              QGenericArgument val3 = QGenericArgument(),
@@ -414,7 +414,7 @@ struct Q_CORE_EXPORT QMetaObject
     }
 
     static inline bool invokeMethod(QObject *obj, const char *member,
-                             QGenericArgument val0 = QGenericArgument(0),
+                             QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                              QGenericArgument val1 = QGenericArgument(),
                              QGenericArgument val2 = QGenericArgument(),
                              QGenericArgument val3 = QGenericArgument(),
@@ -429,7 +429,7 @@ struct Q_CORE_EXPORT QMetaObject
                 val1, val2, val3, val4, val5, val6, val7, val8, val9);
     }
 
-    QObject *newInstance(QGenericArgument val0 = QGenericArgument(0),
+    QObject *newInstance(QGenericArgument val0 = QGenericArgument(Q_NULLPTR),
                          QGenericArgument val1 = QGenericArgument(),
                          QGenericArgument val2 = QGenericArgument(),
                          QGenericArgument val3 = QGenericArgument(),
@@ -485,11 +485,11 @@ public:
     operator bool() const;
 #else
     typedef void *Connection::*RestrictedBool;
-    operator RestrictedBool() const { return d_ptr ? &Connection::d_ptr : 0; }
+    operator RestrictedBool() const { return d_ptr ? &Connection::d_ptr : Q_NULLPTR; }
 #endif
 
 #ifdef Q_COMPILER_RVALUE_REFS
-    inline Connection(Connection &&o) : d_ptr(o.d_ptr) { o.d_ptr = 0; }
+    inline Connection(Connection &&o) : d_ptr(o.d_ptr) { o.d_ptr = Q_NULLPTR; }
     inline Connection &operator=(Connection &&other)
     { qSwap(d_ptr, other.d_ptr); return *this; }
 #endif
diff --git a/src/corelib/kernel/qsharedmemory.h b/src/corelib/kernel/qsharedmemory.h
index c192910dc7..67558e3348 100644
--- a/src/corelib/kernel/qsharedmemory.h
+++ b/src/corelib/kernel/qsharedmemory.h
@@ -68,8 +68,8 @@ public:
         UnknownError
     };
 
-    QSharedMemory(QObject *parent = 0);
-    QSharedMemory(const QString &key, QObject *parent = 0);
+    QSharedMemory(QObject *parent = Q_NULLPTR);
+    QSharedMemory(const QString &key, QObject *parent = Q_NULLPTR);
     ~QSharedMemory();
 
     void setKey(const QString &key);
diff --git a/src/corelib/kernel/qsignalmapper.h b/src/corelib/kernel/qsignalmapper.h
index df2a0a52ea..7aaef6affc 100644
--- a/src/corelib/kernel/qsignalmapper.h
+++ b/src/corelib/kernel/qsignalmapper.h
@@ -45,7 +45,7 @@ class Q_CORE_EXPORT QSignalMapper : public QObject
     Q_OBJECT
     Q_DECLARE_PRIVATE(QSignalMapper)
 public:
-    explicit QSignalMapper(QObject *parent = 0);
+    explicit QSignalMapper(QObject *parent = Q_NULLPTR);
     ~QSignalMapper();
 
     void setMapping(QObject *sender, int id);
diff --git a/src/corelib/kernel/qsocketnotifier.h b/src/corelib/kernel/qsocketnotifier.h
index 4bafbfa69f..8a7af6ebbc 100644
--- a/src/corelib/kernel/qsocketnotifier.h
+++ b/src/corelib/kernel/qsocketnotifier.h
@@ -47,7 +47,7 @@ class Q_CORE_EXPORT QSocketNotifier : public QObject
 public:
     enum Type { Read, Write, Exception };
 
-    QSocketNotifier(qintptr socket, Type, QObject *parent = 0);
+    QSocketNotifier(qintptr socket, Type, QObject *parent = Q_NULLPTR);
     ~QSocketNotifier();
 
     qintptr socket() const;
diff --git a/src/corelib/kernel/qtimer.h b/src/corelib/kernel/qtimer.h
index 163ef75291..56f8a1a177 100644
--- a/src/corelib/kernel/qtimer.h
+++ b/src/corelib/kernel/qtimer.h
@@ -53,7 +53,7 @@ class Q_CORE_EXPORT QTimer : public QObject
     Q_PROPERTY(Qt::TimerType timerType READ timerType WRITE setTimerType)
     Q_PROPERTY(bool active READ isActive)
 public:
-    explicit QTimer(QObject *parent = 0);
+    explicit QTimer(QObject *parent = Q_NULLPTR);
     ~QTimer();
 
     inline bool isActive() const { return id >= 0; }
diff --git a/src/corelib/kernel/qtranslator.h b/src/corelib/kernel/qtranslator.h
index 1552bbde35..78f714c5c6 100644
--- a/src/corelib/kernel/qtranslator.h
+++ b/src/corelib/kernel/qtranslator.h
@@ -49,11 +49,11 @@ class Q_CORE_EXPORT QTranslator : public QObject
 {
     Q_OBJECT
 public:
-    explicit QTranslator(QObject *parent = 0);
+    explicit QTranslator(QObject *parent = Q_NULLPTR);
     ~QTranslator();
 
     virtual QString translate(const char *context, const char *sourceText,
-                              const char *disambiguation = 0, int n = -1) const;
+                              const char *disambiguation = Q_NULLPTR, int n = -1) const;
 
     virtual bool isEmpty() const;
 
diff --git a/src/corelib/kernel/qvariant.h b/src/corelib/kernel/qvariant.h
index 58dfc3aab0..bb996af121 100644
--- a/src/corelib/kernel/qvariant.h
+++ b/src/corelib/kernel/qvariant.h
@@ -278,14 +278,14 @@ class Q_CORE_EXPORT QVariant
     void detach();
     inline bool isDetached() const;
 
-    int toInt(bool *ok = 0) const;
-    uint toUInt(bool *ok = 0) const;
-    qlonglong toLongLong(bool *ok = 0) const;
-    qulonglong toULongLong(bool *ok = 0) const;
+    int toInt(bool *ok = Q_NULLPTR) const;
+    uint toUInt(bool *ok = Q_NULLPTR) const;
+    qlonglong toLongLong(bool *ok = Q_NULLPTR) const;
+    qulonglong toULongLong(bool *ok = Q_NULLPTR) const;
     bool toBool() const;
-    double toDouble(bool *ok = 0) const;
-    float toFloat(bool *ok = 0) const;
-    qreal toReal(bool *ok = 0) const;
+    double toDouble(bool *ok = Q_NULLPTR) const;
+    float toFloat(bool *ok = Q_NULLPTR) const;
+    qreal toReal(bool *ok = Q_NULLPTR) const;
     QByteArray toByteArray() const;
     QBitArray toBitArray() const;
     QString toString() const;
@@ -364,7 +364,7 @@ class Q_CORE_EXPORT QVariant
     struct Private
     {
         inline Private() Q_DECL_NOTHROW : type(Invalid), is_shared(false), is_null(true)
-        { data.ptr = 0; }
+        { data.ptr = Q_NULLPTR; }
 
         // Internal constructor for initialized variants.
         explicit inline Private(uint variantType) Q_DECL_NOTHROW