Merge remote-tracking branch 'origin/wip/qt6' into dev

Change-Id: I10c4b7fcfa0397d999d45e310c2f8f051d57d4d2

58 files changed, 123 insertions, 224 deletions

diff --git a/.qmake.conf b/.qmake.conf
index e6642580b9..2f6f96de99 100644
--- a/.qmake.conf
+++ b/.qmake.conf
@@ -4,4 +4,4 @@ CONFIG += warning_clean
 DEFINES += QT_NO_LINKED_LIST
 DEFINES += QT_NO_JAVA_STYLE_ITERATORS
 
-MODULE_VERSION = 5.15.0
+MODULE_VERSION = 6.0.0
diff --git a/src/imports/folderlistmodel/plugin.cpp b/src/imports/folderlistmodel/plugin.cpp
index 31cd793737..40968d5e1d 100644
--- a/src/imports/folderlistmodel/plugin.cpp
+++ b/src/imports/folderlistmodel/plugin.cpp
@@ -60,8 +60,7 @@ public:
         qmlRegisterType<QQuickFolderListModel,1>(uri,2,1,"FolderListModel");
         qmlRegisterType<QQuickFolderListModel,2>(uri,2,2,"FolderListModel");
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.11 onward
-        qmlRegisterModule(uri, 2, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 2, 15);
 
         // revision in Qt 5.11: added status property
         qmlRegisterType<QQuickFolderListModel,11>(uri, 2, 11, "FolderListModel");
diff --git a/src/imports/layouts/plugin.cpp b/src/imports/layouts/plugin.cpp
index d28109c3cf..03a2c8fd00 100644
--- a/src/imports/layouts/plugin.cpp
+++ b/src/imports/layouts/plugin.cpp
@@ -67,8 +67,7 @@ public:
                                                            QStringLiteral("Do not create objects of type Layout"));
         qmlRegisterRevision<QQuickGridLayoutBase, 1>(uri, 1, 1);
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.11 onward
-        qmlRegisterModule(uri, 1, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 1, 15);
     }
 };
 //![class decl]
diff --git a/src/imports/localstorage/plugin.cpp b/src/imports/localstorage/plugin.cpp
index 9004d1ee6f..740a394fa0 100644
--- a/src/imports/localstorage/plugin.cpp
+++ b/src/imports/localstorage/plugin.cpp
@@ -825,8 +825,7 @@ public:
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQuick.LocalStorage"));
         qmlRegisterSingletonType<QQuickLocalStorage>(uri, 2, 0, "LocalStorage", module_api_factory);
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.11 onward
-        qmlRegisterModule(uri, 2, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 2, 15);
     }
 };
 
diff --git a/src/imports/models/plugin.cpp b/src/imports/models/plugin.cpp
index 9fe63412f3..fd99f243b0 100644
--- a/src/imports/models/plugin.cpp
+++ b/src/imports/models/plugin.cpp
@@ -77,8 +77,7 @@ public:
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQml.Models"));
         QQmlModelsModule::defineModule();
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.11 onward
-        qmlRegisterModule(uri, 2, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 2, 15);
     }
 };
 //![class decl]
diff --git a/src/imports/particles/plugin.cpp b/src/imports/particles/plugin.cpp
index 26fd979133..704eb0ffbe 100644
--- a/src/imports/particles/plugin.cpp
+++ b/src/imports/particles/plugin.cpp
@@ -56,8 +56,7 @@ public:
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQuick.Particles"));
         QQuickParticlesModule::defineModule();
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.11 onward
-        qmlRegisterModule(uri, 2, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 2, 15);
     }
 };
 //![class decl]
diff --git a/src/imports/qtqml/plugin.cpp b/src/imports/qtqml/plugin.cpp
index 7595d6d65b..f63e04c3b9 100644
--- a/src/imports/qtqml/plugin.cpp
+++ b/src/imports/qtqml/plugin.cpp
@@ -42,10 +42,6 @@
 #include <QtQml/private/qqmlcomponentattached_p.h>
 #include <QtQml/private/qqmlbind_p.h>
 
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-#include <QtQmlModels/private/qqmlmodelsmodule_p.h>
-#endif
-
 QT_BEGIN_NAMESPACE
 
 /*!
@@ -76,12 +72,7 @@ public:
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQml"));
         QQmlEnginePrivate::defineModule();
 
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-        QQmlModelsModule::registerQmlTypes();
-#endif
-
-        // Auto-increment the import to stay in sync with ALL future QtQml minor versions from 5.11 onward
-        qmlRegisterModule(uri, 2, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 2, 15);
     }
 };
 //![class decl]
diff --git a/src/imports/qtqml/qmldir b/src/imports/qtqml/qmldir
index f6b51c7970..a8adb2010d 100644
--- a/src/imports/qtqml/qmldir
+++ b/src/imports/qtqml/qmldir
@@ -2,3 +2,6 @@ module QtQml
 plugin qmlplugin
 classname QtQmlPlugin
 typeinfo plugins.qmltypes
+import QtQml.Models
+import QtQml.WorkerScript
+designersupported
diff --git a/src/imports/qtquick2/plugin.cpp b/src/imports/qtquick2/plugin.cpp
index efa05c349c..1b14e9f0e5 100644
--- a/src/imports/qtquick2/plugin.cpp
+++ b/src/imports/qtquick2/plugin.cpp
@@ -38,14 +38,7 @@
 ****************************************************************************/
 
 #include <QtQml/qqmlextensionplugin.h>
-
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-#include <QtQml/private/qqmlengine_p.h>
-#include <QtQmlModels/private/qqmlmodelsmodule_p.h>
-#if QT_CONFIG(qml_worker_script)
-#include <QtQmlWorkerScript/private/qqmlworkerscriptmodule_p.h>
-#endif
-#endif // QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+#include <QtQml/QQmlEngine>
 
 #include <private/qtquick2_p.h>
 
@@ -63,17 +56,9 @@ public:
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQuick"));
         Q_UNUSED(uri);
         moduleDefined = true;
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-        QQmlEnginePrivate::registerQuickTypes();
-        QQmlModelsModule::registerQuickTypes();
-#if QT_CONFIG(qml_worker_script)
-        QQmlWorkerScriptModule::registerQuickTypes();
-#endif
-#endif
         QQmlQtQuick2Module::defineModule();
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.11 onward
-        qmlRegisterModule("QtQuick", 2, QT_VERSION_MINOR);
+        qmlRegisterModule("QtQuick", 2, 15);
     }
 
     ~QtQuick2Plugin() override
diff --git a/src/imports/qtquick2/qmldir b/src/imports/qtquick2/qmldir
index 8167e813df..d74aabd9e9 100644
--- a/src/imports/qtquick2/qmldir
+++ b/src/imports/qtquick2/qmldir
@@ -3,3 +3,4 @@ plugin qtquick2plugin
 classname QtQuick2Plugin
 typeinfo plugins.qmltypes
 designersupported
+import QtQml
diff --git a/src/imports/shapes/plugin.cpp b/src/imports/shapes/plugin.cpp
index 0679a70630..6197b2fdf5 100644
--- a/src/imports/shapes/plugin.cpp
+++ b/src/imports/shapes/plugin.cpp
@@ -64,8 +64,7 @@ public:
         qmlRegisterType<QQuickShapeRadialGradient>(uri, 1, 0, "RadialGradient");
         qmlRegisterType<QQuickShapeConicalGradient>(uri, 1, 0, "ConicalGradient");
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions
-        qmlRegisterModule(uri, 1, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 1, 15);
 
         // revision in Qt 5.11: added containsMode property
         qmlRegisterType<QQuickShape, 11>(uri, 1, 11, "Shape");
diff --git a/src/imports/statemachine/plugin.cpp b/src/imports/statemachine/plugin.cpp
index bf7499b31a..0ec2c353fc 100644
--- a/src/imports/statemachine/plugin.cpp
+++ b/src/imports/statemachine/plugin.cpp
@@ -69,8 +69,7 @@ public:
         qmlRegisterType<TimeoutTransition>(uri, 1, 0, "TimeoutTransition");
         qmlProtectModule(uri, 1);
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.11 onward
-        qmlRegisterModule(uri, 1, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 1, 15);
     }
 };
 
diff --git a/src/imports/testlib/main.cpp b/src/imports/testlib/main.cpp
index c52cf417a6..e41df3d73c 100644
--- a/src/imports/testlib/main.cpp
+++ b/src/imports/testlib/main.cpp
@@ -152,8 +152,7 @@ public:
         qmlRegisterType<QuickTestUtil>(uri,1,0,"TestUtil");
         qmlRegisterAnonymousType<QQuickTouchEventSequence>(uri, 1);
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.11 onward
-        qmlRegisterModule(uri, 1, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 1, 15);
     }
 };
 
diff --git a/src/imports/wavefrontmesh/plugin.cpp b/src/imports/wavefrontmesh/plugin.cpp
index 1a266b7e36..c695b5d19c 100644
--- a/src/imports/wavefrontmesh/plugin.cpp
+++ b/src/imports/wavefrontmesh/plugin.cpp
@@ -59,8 +59,7 @@ public:
         Q_ASSERT(QLatin1String(uri) == QLatin1String("Qt.labs.wavefrontmesh"));
         qmlRegisterType<QWavefrontMesh>(uri, 1, 0, "WavefrontMesh");
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.12 onward
-        qmlRegisterModule(uri, 1, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 1, 15);
     }
 };
 
diff --git a/src/imports/window/plugin.cpp b/src/imports/window/plugin.cpp
index dfe1dcf62e..a331708e87 100644
--- a/src/imports/window/plugin.cpp
+++ b/src/imports/window/plugin.cpp
@@ -71,8 +71,7 @@ public:
         Q_ASSERT(QLatin1String(uri) == QLatin1String("QtQuick.Window"));
         QQuickWindowModule::defineModule();
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.11 onward
-        qmlRegisterModule(uri, 2, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 2, 15);
     }
 };
 //![class decl]
diff --git a/src/imports/workerscript/plugin.cpp b/src/imports/workerscript/plugin.cpp
index 5b3bff7934..2d8797db7e 100644
--- a/src/imports/workerscript/plugin.cpp
+++ b/src/imports/workerscript/plugin.cpp
@@ -71,8 +71,7 @@ public:
 
         QQmlWorkerScriptModule::defineModule();
 
-        // Auto-increment the import to stay in sync with ALL future QtQuick minor versions from 5.11 onward
-        qmlRegisterModule(uri, 2, QT_VERSION_MINOR);
+        qmlRegisterModule(uri, 2, 15);
     }
 };
 
diff --git a/src/imports/workerscript/qmldir b/src/imports/workerscript/qmldir
index 1606400a23..02ff9ea188 100644
--- a/src/imports/workerscript/qmldir
+++ b/src/imports/workerscript/qmldir
@@ -1,3 +1,4 @@
 module QtQml.WorkerScript
 plugin workerscriptplugin
 classname QtQmlWorkerScriptPlugin
+designersupported
diff --git a/src/qml/animations/qabstractanimationjob.cpp b/src/qml/animations/qabstractanimationjob.cpp
index 7a784a2b35..c6ace05b8f 100644
--- a/src/qml/animations/qabstractanimationjob.cpp
+++ b/src/qml/animations/qabstractanimationjob.cpp
@@ -641,7 +641,7 @@ void QAbstractAnimationJob::removeAnimationChangeListener(QAnimationJobChangeLis
 
 void QAbstractAnimationJob::debugAnimation(QDebug d) const
 {
-    d << "AbstractAnimationJob(" << hex << (const void *) this << dec << ") state:"
+    d << "AbstractAnimationJob(" << Qt::hex << (const void *) this << Qt::dec << ") state:"
       << m_state << "duration:" << duration();
 }
 
diff --git a/src/qml/animations/qcontinuinganimationgroupjob.cpp b/src/qml/animations/qcontinuinganimationgroupjob.cpp
index 10096bf19c..88c0e9e60e 100644
--- a/src/qml/animations/qcontinuinganimationgroupjob.cpp
+++ b/src/qml/animations/qcontinuinganimationgroupjob.cpp
@@ -120,7 +120,7 @@ void QContinuingAnimationGroupJob::uncontrolledAnimationFinished(QAbstractAnimat
 
 void QContinuingAnimationGroupJob::debugAnimation(QDebug d) const
 {
-    d << "ContinuingAnimationGroupJob(" << hex << (const void *) this << dec << ")";
+    d << "ContinuingAnimationGroupJob(" << Qt::hex << (const void *) this << Qt::dec << ")";
 
     debugChildren(d);
 }
diff --git a/src/qml/animations/qparallelanimationgroupjob.cpp b/src/qml/animations/qparallelanimationgroupjob.cpp
index 700fdf9fd9..420a934ba2 100644
--- a/src/qml/animations/qparallelanimationgroupjob.cpp
+++ b/src/qml/animations/qparallelanimationgroupjob.cpp
@@ -239,7 +239,7 @@ void QParallelAnimationGroupJob::uncontrolledAnimationFinished(QAbstractAnimatio
 
 void QParallelAnimationGroupJob::debugAnimation(QDebug d) const
 {
-    d << "ParallelAnimationGroupJob(" << hex << (const void *) this << dec << ")";
+    d << "ParallelAnimationGroupJob(" << Qt::hex << (const void *) this << Qt::dec << ")";
 
     debugChildren(d);
 }
diff --git a/src/qml/animations/qpauseanimationjob.cpp b/src/qml/animations/qpauseanimationjob.cpp
index 0652ed578b..aac04d2f8d 100644
--- a/src/qml/animations/qpauseanimationjob.cpp
+++ b/src/qml/animations/qpauseanimationjob.cpp
@@ -67,7 +67,7 @@ void QPauseAnimationJob::updateCurrentTime(int)
 
 void QPauseAnimationJob::debugAnimation(QDebug d) const
 {
-    d << "PauseAnimationJob(" << hex << (const void *) this << dec << ")" << "duration:" << m_duration;
+    d << "PauseAnimationJob(" << Qt::hex << (const void *) this << Qt::dec << ")" << "duration:" << m_duration;
 }
 
 QT_END_NAMESPACE
diff --git a/src/qml/animations/qsequentialanimationgroupjob.cpp b/src/qml/animations/qsequentialanimationgroupjob.cpp
index d98546122f..dc57444b32 100644
--- a/src/qml/animations/qsequentialanimationgroupjob.cpp
+++ b/src/qml/animations/qsequentialanimationgroupjob.cpp
@@ -426,7 +426,7 @@ void QSequentialAnimationGroupJob::animationRemoved(QAbstractAnimationJob *anim,
 
 void QSequentialAnimationGroupJob::debugAnimation(QDebug d) const
 {
-    d << "SequentialAnimationGroupJob(" << hex << (const void *) this << dec << ")" << "currentAnimation:" << (void *)m_currentAnimation;
+    d << "SequentialAnimationGroupJob(" << Qt::hex << (const void *) this << Qt::dec << ")" << "currentAnimation:" << (void *)m_currentAnimation;
 
     debugChildren(d);
 }
diff --git a/src/qml/jsruntime/qv4executablecompilationunit.cpp b/src/qml/jsruntime/qv4executablecompilationunit.cpp
index 58cd581eae..950e0b10ea 100644
--- a/src/qml/jsruntime/qv4executablecompilationunit.cpp
+++ b/src/qml/jsruntime/qv4executablecompilationunit.cpp
@@ -120,7 +120,7 @@ static QString toString(QV4::ReturnedValue v)
 static void dumpConstantTable(const StaticValue *constants, uint count)
 {
     QDebug d = qDebug();
-    d.nospace() << right;
+    d.nospace() << Qt::right;
     for (uint i = 0; i < count; ++i) {
         d << qSetFieldWidth(8) << i << qSetFieldWidth(0) << ":    "
           << toString(constants[i].asReturnedValue()).toUtf8().constData() << "\n";
diff --git a/src/qml/memory/qv4mm.cpp b/src/qml/memory/qv4mm.cpp
index c7f52eac6b..3465036c86 100644
--- a/src/qml/memory/qv4mm.cpp
+++ b/src/qml/memory/qv4mm.cpp
@@ -223,7 +223,8 @@ Chunk *MemorySegment::allocate(size_t size)
             pageReservation.commit(candidate, size);
             for (uint i = 0; i < requiredChunks; ++i)
                 setBit(candidate - base + i);
-            DEBUG << "allocated chunk " << candidate << hex << size;
+            DEBUG << "allocated chunk " << candidate << Qt::hex << size;
+
             return candidate;
         }
     }
@@ -1024,7 +1025,7 @@ static size_t dumpBins(BlockAllocator *b, const char *title)
     SDUMP() << "    large slot map";
     HeapItem *h = b->freeBins[BlockAllocator::NumBins - 1];
     while (h) {
-        SDUMP() << "        " << hex << (quintptr(h)/32) << h->freeData.availableSlots;
+        SDUMP() << "        " << Qt::hex << (quintptr(h)/32) << h->freeData.availableSlots;
         h = h->freeData.next;
     }
 
diff --git a/src/qml/qml/qqmlengine.cpp b/src/qml/qml/qqmlengine.cpp
index 0fd07ea209..5fb5d73341 100644
--- a/src/qml/qml/qqmlengine.cpp
+++ b/src/qml/qml/qqmlengine.cpp
@@ -224,30 +224,6 @@ void QQmlEnginePrivate::defineModule()
 #endif
 }
 
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-void QQmlEnginePrivate::registerQuickTypes()
-{
-    // Don't add anything here. These are only for backwards compatibility.
-
-    const char uri[] = "QtQuick";
-
-    qmlRegisterType<QQmlComponent>(uri, 2, 0, "Component");
-    qmlRegisterType<QObject>(uri, 2, 0, "QtObject");
-    qmlRegisterType<QQmlBind>(uri, 2, 0, "Binding");
-    qmlRegisterType<QQmlBind, 8>(uri, 2, 8, "Binding");
-    qmlRegisterCustomType<QQmlConnections>(uri, 2, 0, "Connections", new QQmlConnectionsParser);
-    qmlRegisterCustomType<QQmlConnections, 3>(uri, 2, 7, "Connections", new QQmlConnectionsParser);
-#if QT_CONFIG(qml_animation)
-    qmlRegisterType<QQmlTimer>(uri, 2, 0,"Timer");
-#endif
-    qmlRegisterType<QQmlLoggingCategory>(uri, 2, 8, "LoggingCategory");
-    qmlRegisterType<QQmlLoggingCategory, 12>(uri, 2, 12, "LoggingCategory");
-#if QT_CONFIG(qml_locale)
-    qmlRegisterUncreatableType<QQmlLocale>(uri, 2, 0, "Locale", QQmlEngine::tr("Locale cannot be instantiated. Use Qt.locale()"));
-#endif
-}
-#endif // QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-
 bool QQmlEnginePrivate::designerMode()
 {
     return s_designerMode;
diff --git a/src/qml/qml/qqmlengine_p.h b/src/qml/qml/qqmlengine_p.h
index 385ae02ce5..2c4bb36c8f 100644
--- a/src/qml/qml/qqmlengine_p.h
+++ b/src/qml/qml/qqmlengine_p.h
@@ -252,9 +252,6 @@ public:
     static QList<QQmlError> qmlErrorFromDiagnostics(const QString &fileName, const QList<QQmlJS::DiagnosticMessage> &diagnosticMessages);
 
     static void defineModule();
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-    static void registerQuickTypes();
-#endif
 
     static bool designerMode();
     static void activateDesignerMode();
diff --git a/src/qmlmodels/qqmlmodelsmodule.cpp b/src/qmlmodels/qqmlmodelsmodule.cpp
index d569d8e23c..4b753fe49a 100644
--- a/src/qmlmodels/qqmlmodelsmodule.cpp
+++ b/src/qmlmodels/qqmlmodelsmodule.cpp
@@ -62,28 +62,10 @@
 
 QT_BEGIN_NAMESPACE
 
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-
-void QQmlModelsModule::registerQmlTypes()
-{
-    // Don't add anything here. These are only for backwards compatibility.
-#if QT_CONFIG(qml_object_model)
-    qmlRegisterType<QQmlInstantiator>("QtQml", 2, 1, "Instantiator"); // Only available in >= 2.1
-    qmlRegisterAnonymousType<QQmlInstanceModel>("QtQml", 2);
-#endif
-}
-
-void QQmlModelsModule::registerQuickTypes()
+void QQmlModelsModule::defineModule()
 {
-    // Don't add anything here. These are only for backwards compatibility.
-
-    const char uri[] = "QtQuick";
+    const char uri[] = "QtQml.Models";
 
-#if QT_CONFIG(qml_object_model)
-    qmlRegisterType<QQmlInstantiator>(uri, 2, 1, "Instantiator");
-    qmlRegisterAnonymousType<QQmlInstanceModel>(uri, 2);
-    qmlRegisterType<QQmlObjectModel>(uri, 2, 0, "VisualItemModel");
-#endif
 #if QT_CONFIG(qml_list_model)
     qmlRegisterType<QQmlListElement>(uri, 2, 0, "ListElement");
     qmlRegisterCustomType<QQmlListModel>(uri, 2, 0, "ListModel", new QQmlListModelParser);
@@ -91,29 +73,14 @@ void QQmlModelsModule::registerQuickTypes()
 #if QT_CONFIG(qml_delegate_model)
     qmlRegisterType<QQmlDelegateModel>(uri, 2, 0, "VisualDataModel");
     qmlRegisterType<QQmlDelegateModelGroup>(uri, 2, 0, "VisualDataGroup");
-    qmlRegisterType<QQuickPackage>(uri, 2, 0, "Package");
-#endif
-}
-
-#endif // QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-
-void QQmlModelsModule::defineModule()
-{
-    const char uri[] = "QtQml.Models";
-
-#if QT_CONFIG(qml_list_model)
-    qmlRegisterType<QQmlListElement>(uri, 2, 1, "ListElement");
-    qmlRegisterCustomType<QQmlListModel>(uri, 2, 1, "ListModel", new QQmlListModelParser);
-#endif
-#if QT_CONFIG(qml_delegate_model)
     qmlRegisterType<QQmlDelegateModel>(uri, 2, 1, "DelegateModel");
     qmlRegisterType<QQmlDelegateModelGroup>(uri, 2, 1, "DelegateModelGroup");
-    qmlRegisterType<QQuickPackage>(uri, 2, 14, "Package");
+    qmlRegisterType<QQuickPackage>(uri, 2, 0, "Package");
 #endif
 #if QT_CONFIG(qml_object_model)
     qmlRegisterType<QQmlObjectModel>(uri, 2, 1, "ObjectModel");
     qmlRegisterType<QQmlObjectModel,3>(uri, 2, 3, "ObjectModel");
-    qmlRegisterType<QQmlInstantiator>(uri, 2, 14, "Instantiator");
+    qmlRegisterType<QQmlInstantiator>(uri, 2, 1, "Instantiator");
     qmlRegisterAnonymousType<QQmlInstanceModel>(uri, 2);
 #endif
 #if QT_CONFIG(itemmodel)
diff --git a/src/qmlmodels/qqmlmodelsmodule_p.h b/src/qmlmodels/qqmlmodelsmodule_p.h
index 7e02578db9..f63052b682 100644
--- a/src/qmlmodels/qqmlmodelsmodule_p.h
+++ b/src/qmlmodels/qqmlmodelsmodule_p.h
@@ -58,11 +58,6 @@ QT_BEGIN_NAMESPACE
 class Q_QMLMODELS_PRIVATE_EXPORT QQmlModelsModule
 {
 public:
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-    static void registerQmlTypes();
-    static void registerQuickTypes();
-#endif
-
     static void defineModule();
     static void defineLabsModule();
 };
diff --git a/src/qmlworkerscript/qqmlworkerscriptmodule.cpp b/src/qmlworkerscript/qqmlworkerscriptmodule.cpp
index 98e82dbeba..5eb7d306bc 100644
--- a/src/qmlworkerscript/qqmlworkerscriptmodule.cpp
+++ b/src/qmlworkerscript/qqmlworkerscriptmodule.cpp
@@ -42,17 +42,6 @@
 
 QT_BEGIN_NAMESPACE
 
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-
-void QQmlWorkerScriptModule::registerQuickTypes()
-{
-    // Don't add anything here. These are only for backwards compatibility.
-    const char uri[] = "QtQuick";
-    qmlRegisterType<QQuickWorkerScript>(uri, 2, 0, "WorkerScript");
-}
-
-#endif // QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-
 void QQmlWorkerScriptModule::defineModule()
 {
     const char uri[] = "QtQml.WorkerScript";
diff --git a/src/qmlworkerscript/qqmlworkerscriptmodule_p.h b/src/qmlworkerscript/qqmlworkerscriptmodule_p.h
index a2efb304c1..ae52d10c16 100644
--- a/src/qmlworkerscript/qqmlworkerscriptmodule_p.h
+++ b/src/qmlworkerscript/qqmlworkerscriptmodule_p.h
@@ -58,9 +58,6 @@ QT_BEGIN_NAMESPACE
 class Q_QMLWORKERSCRIPT_PRIVATE_EXPORT QQmlWorkerScriptModule
 {
 public:
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-    static void registerQuickTypes();
-#endif
     static void defineModule();
 };
 
diff --git a/src/quick/handlers/qquickpinchhandler.cpp b/src/quick/handlers/qquickpinchhandler.cpp
index a5a867015c..9ef0f895ac 100644
--- a/src/quick/handlers/qquickpinchhandler.cpp
+++ b/src/quick/handlers/qquickpinchhandler.cpp
@@ -289,7 +289,7 @@ void QQuickPinchHandler::handlePointerEventImpl(QQuickPointerEvent *event)
 {
     if (Q_UNLIKELY(lcPinchHandler().isDebugEnabled())) {
         for (const QQuickHandlerPoint &p : currentPoints())
-            qCDebug(lcPinchHandler) << hex << p.id() << p.sceneGrabPosition() << "->" << p.scenePosition();
+            qCDebug(lcPinchHandler) << Qt::hex << p.id() << p.sceneGrabPosition() << "->" << p.scenePosition();
     }
     QQuickMultiPointHandler::handlePointerEventImpl(event);
 
diff --git a/src/quick/handlers/qquickpointerhandler.cpp b/src/quick/handlers/qquickpointerhandler.cpp
index 12c06aa179..ee0a8e7837 100644
--- a/src/quick/handlers/qquickpointerhandler.cpp
+++ b/src/quick/handlers/qquickpointerhandler.cpp
@@ -249,7 +249,7 @@ bool QQuickPointerHandler::approveGrabTransition(QQuickEventPoint *point, QObjec
                 allowed = true;
         }
     }
-    qCDebug(lcPointerHandlerGrab) << "point" << hex << point->pointId() << "permission" <<
+    qCDebug(lcPointerHandlerGrab) << "point" << Qt::hex << point->pointId() << "permission" <<
             QMetaEnum::fromType<GrabPermissions>().valueToKeys(grabPermissions()) <<
             ':' << this << (allowed ? "approved to" : "denied to") << proposedGrabber;
     return allowed;
@@ -473,7 +473,7 @@ bool QQuickPointerHandler::wantsPointerEvent(QQuickPointerEvent *event)
 bool QQuickPointerHandler::wantsEventPoint(QQuickEventPoint *point)
 {
     bool ret = point->exclusiveGrabber() == this || point->passiveGrabbers().contains(this) || parentContains(point);
-    qCDebug(lcPointerHandlerDispatch) << hex << point->pointId() << "@" << point->scenePosition()
+    qCDebug(lcPointerHandlerDispatch) << Qt::hex << point->pointId() << "@" << point->scenePosition()
                                       << metaObject()->className() << objectName() << ret;
     return ret;
 }
diff --git a/src/quick/handlers/qquicksinglepointhandler.cpp b/src/quick/handlers/qquicksinglepointhandler.cpp
index 15fe0cc89e..b51f53b74f 100644
--- a/src/quick/handlers/qquicksinglepointhandler.cpp
+++ b/src/quick/handlers/qquicksinglepointhandler.cpp
@@ -95,7 +95,7 @@ bool QQuickSinglePointHandler::wantsPointerEvent(QQuickPointerEvent *event)
             }
         }
         if (missing)
-            qCWarning(DBG_TOUCH_TARGET) << this << "pointId" << hex << d->pointInfo.id()
+            qCWarning(DBG_TOUCH_TARGET) << this << "pointId" << Qt::hex << d->pointInfo.id()
                 << "is missing from current event, but was neither canceled nor released";
         if (point) {
             if (candidatePointCount == 1 || (candidatePointCount > 1 && d->ignoreAdditionalPoints)) {
diff --git a/src/quick/items/qquickevents.cpp b/src/quick/items/qquickevents.cpp
index 161ef17e1f..b0cfbaad6d 100644
--- a/src/quick/items/qquickevents.cpp
+++ b/src/quick/items/qquickevents.cpp
@@ -851,7 +851,7 @@ void QQuickEventPoint::setGrabberItem(QQuickItem *grabber)
         if (oldGrabberHandler && !oldGrabberHandler->approveGrabTransition(this, grabber))
             return;
         if (Q_UNLIKELY(lcPointerGrab().isDebugEnabled())) {
-            qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << hex << m_pointId << pointStateString(this) << "@" << m_scenePos
+            qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << Qt::hex << m_pointId << pointStateString(this) << "@" << m_scenePos
                                    << ": grab" << m_exclusiveGrabber << "->" << grabber;
         }
         QQuickItem *oldGrabberItem = grabberItem();
@@ -892,10 +892,10 @@ void QQuickEventPoint::setGrabberPointerHandler(QQuickPointerHandler *grabber, b
     if (Q_UNLIKELY(lcPointerGrab().isDebugEnabled())) {
         if (exclusive) {
             if (m_exclusiveGrabber != grabber)
-                qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << hex << m_pointId << pointStateString(this)
+                qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << Qt::hex << m_pointId << pointStateString(this)
                                        << ": grab (exclusive)" << m_exclusiveGrabber << "->" << grabber;
         } else {
-            qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << hex << m_pointId << pointStateString(this)
+            qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << Qt::hex << m_pointId << pointStateString(this)
                                    << ": grab (passive)" << grabber;
         }
     }
@@ -958,7 +958,7 @@ void QQuickEventPoint::cancelExclusiveGrabImpl(QTouchEvent *cancelEvent)
     if (m_exclusiveGrabber.isNull())
         return;
     if (Q_UNLIKELY(lcPointerGrab().isDebugEnabled())) {
-        qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << hex << m_pointId << pointStateString(this)
+        qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << Qt::hex << m_pointId << pointStateString(this)
                                << ": grab (exclusive)" << m_exclusiveGrabber << "-> nullptr";
     }
     if (auto handler = grabberPointerHandler()) {
@@ -981,7 +981,7 @@ void QQuickEventPoint::cancelPassiveGrab(QQuickPointerHandler *handler)
 {
     if (removePassiveGrabber(handler)) {
         if (Q_UNLIKELY(lcPointerGrab().isDebugEnabled())) {
-            qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << hex << m_pointId << pointStateString(this)
+            qCDebug(lcPointerGrab) << pointDeviceName(this) << "point" << Qt::hex << m_pointId << pointStateString(this)
                                    << ": grab (passive)" << handler << "removed";
         }
         handler->onGrabChanged(handler, CancelGrabPassive, this);
@@ -1960,7 +1960,7 @@ Q_QUICK_PRIVATE_EXPORT QDebug operator<<(QDebug dbg, const QQuickEventPoint *eve
     dbg << "QQuickEventPoint(accepted:" << event->isAccepted()
         << " state:";
     QtDebugUtils::formatQEnum(dbg, event->state());
-    dbg << " scenePos:" << event->scenePosition() << " id:" << hex << event->pointId() << dec
+    dbg << " scenePos:" << event->scenePosition() << " id:" << Qt::hex << event->pointId() << Qt::dec
         << " timeHeld:" << event->timeHeld() << ')';
     return dbg;
 }
diff --git a/src/quick/items/qquickitemsmodule.cpp b/src/quick/items/qquickitemsmodule.cpp
index f2098f6732..6db664f705 100644
--- a/src/quick/items/qquickitemsmodule.cpp
+++ b/src/quick/items/qquickitemsmodule.cpp
@@ -180,8 +180,7 @@ static void qt_quickitems_defineModule(const char *uri, int major, int minor)
     QQmlPrivate::RegisterAutoParent autoparent = { 0, &qquickitem_autoParent };
     QQmlPrivate::qmlregister(QQmlPrivate::AutoParentRegistration, &autoparent);
 
-    // Register the latest version, even if there are no new types or new revisions for existing types yet.
-    qmlRegisterModule(uri, 2, QT_VERSION_MINOR);
+    qmlRegisterModule(uri, 2, 15);
 
 #if !QT_CONFIG(quick_animatedimage)
     qmlRegisterTypeNotAvailable(uri,major,minor,"AnimatedImage", QCoreApplication::translate("QQuickAnimatedImage","Qt was built without support for QMovie"));
diff --git a/src/quick/items/qquickpainteditem.cpp b/src/quick/items/qquickpainteditem.cpp
index 57848919f3..cee73ac2e8 100644
--- a/src/quick/items/qquickpainteditem.cpp
+++ b/src/quick/items/qquickpainteditem.cpp
@@ -369,10 +369,6 @@ void QQuickPaintedItem::setTextureSize(const QSize &size)
     emit textureSizeChanged();
 }
 
-#if QT_VERSION >= 0x060000
-#warning "Remove: QQuickPaintedItem::contentsBoundingRect, contentsScale, contentsSize. Also remove them from qsgadaptationlayer_p.h and qsgdefaultpainternode.h/cpp."
-#endif
-
 /*!
     \obsolete
 
diff --git a/src/quick/items/qquickview.cpp b/src/quick/items/qquickview.cpp
index 17fc16d44b..9998dc3605 100644
--- a/src/quick/items/qquickview.cpp
+++ b/src/quick/items/qquickview.cpp
@@ -517,14 +517,14 @@ void QQuickViewPrivate::setRootObject(QObject *obj)
         sgItem->setParentItem(q->QQuickWindow::contentItem());
         QQml_setParent_noEvent(sgItem, q->QQuickWindow::contentItem());
     } else if (qobject_cast<QWindow *>(obj)) {
-        qWarning() << "QQuickView does not support using windows as a root item." << endl
-                   << endl
-                   << "If you wish to create your root window from QML, consider using QQmlApplicationEngine instead." << endl;
+        qWarning() << "QQuickView does not support using windows as a root item." << Qt::endl
+                   << Qt::endl
+                   << "If you wish to create your root window from QML, consider using QQmlApplicationEngine instead." << Qt::endl;
     } else {
-        qWarning() << "QQuickView only supports loading of root objects that derive from QQuickItem." << endl
-                   << endl
-                   << "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;
+        qWarning() << "QQuickView only supports loading of root objects that derive from QQuickItem." << Qt::endl
+                   << Qt::endl
+                   << "Ensure your QML code is written for QtQuick 2, and uses a root that is or" << Qt::endl
+                   << "inherits from QtQuick's Item (not a Timer, QtObject, etc)." << Qt::endl;
         delete obj;
         root = nullptr;
     }
diff --git a/src/quick/items/qquickwindow.cpp b/src/quick/items/qquickwindow.cpp
index 6fe2891242..68859dd8cc 100644
--- a/src/quick/items/qquickwindow.cpp
+++ b/src/quick/items/qquickwindow.cpp
@@ -760,7 +760,7 @@ bool QQuickWindowPrivate::deliverTouchAsMouse(QQuickItem *item, QQuickPointerEve
             if (!item->contains(pos))
                 break;
 
-            qCDebug(DBG_TOUCH_TARGET) << "TP (mouse)" << hex << p.id() << "->" << item;
+            qCDebug(DBG_TOUCH_TARGET) << "TP (mouse)" << Qt::hex << p.id() << "->" << item;
             QScopedPointer<QMouseEvent> mousePress(touchToMouseEvent(QEvent::MouseButtonPress, p, event.data(), item, false));
 
             // Send a single press and see if that's accepted
@@ -802,7 +802,7 @@ bool QQuickWindowPrivate::deliverTouchAsMouse(QQuickItem *item, QQuickPointerEve
                     QCoreApplication::sendEvent(item, me.data());
                     event->setAccepted(me->isAccepted());
                     if (me->isAccepted()) {
-                        qCDebug(DBG_TOUCH_TARGET) << "TP (mouse)" << hex << p.id() << "->" << mouseGrabberItem;
+                        qCDebug(DBG_TOUCH_TARGET) << "TP (mouse)" << Qt::hex << p.id() << "->" << mouseGrabberItem;
                     }
                     return event->isAccepted();
                 } else {
@@ -2533,7 +2533,7 @@ void QQuickWindowPrivate::deliverTouchEvent(QQuickPointerTouchEvent *event)
         QQuickEventPoint *point = event->point(i);
         if (point->state() == QQuickEventPoint::Released) {
             int id = point->pointId();
-            qCDebug(DBG_TOUCH_TARGET) << "TP" << hex << id << "released";
+            qCDebug(DBG_TOUCH_TARGET) << "TP" << Qt::hex << id << "released";
             point->setGrabberItem(nullptr);
             if (id == touchMouseId)
                 cancelTouchMouseSynthesis();
@@ -2630,7 +2630,7 @@ bool QQuickWindowPrivate::deliverPressOrReleaseEvent(QQuickPointerEvent *event,
             if (point->grabberPointerHandler())
                 cancelTouchMouseSynthesis();
         } else {
-            qCWarning(DBG_TOUCH_TARGET) << "during delivery of touch press, synth-mouse ID" << hex << touchMouseId << "is missing from" << event;
+            qCWarning(DBG_TOUCH_TARGET) << "during delivery of touch press, synth-mouse ID" << Qt::hex << touchMouseId << "is missing from" << event;
         }
     }
     for (int i = 0; i < pointCount; ++i) {
@@ -2772,7 +2772,7 @@ void QQuickWindowPrivate::deliverMatchingPointsToItem(QQuickItem *item, QQuickPo
             if (point.state() == Qt::TouchPointPressed) {
                 if (auto *tp = ptEvent->pointById(point.id())) {
                     if (tp->exclusiveGrabber() == item) {
-                        qCDebug(DBG_TOUCH_TARGET) << "TP" << hex << point.id() << "disassociated";
+                        qCDebug(DBG_TOUCH_TARGET) << "TP" << Qt::hex << point.id() << "disassociated";
                         tp->setGrabberItem(nullptr);
                     }
                 }
@@ -3051,7 +3051,7 @@ bool QQuickWindowPrivate::sendFilteredPointerEventImpl(QQuickPointerEvent *event
                                     qCDebug(DBG_TOUCH) << "touch event intercepted as synth mouse event by childMouseEventFilter of " << filteringParent;
                                     skipDelivery.append(filteringParent);
                                     if (t != QEvent::MouseButtonRelease) {
-                                        qCDebug(DBG_TOUCH_TARGET) << "TP (mouse)" << hex << tp.id() << "->" << filteringParent;
+                                        qCDebug(DBG_TOUCH_TARGET) << "TP (mouse)" << Qt::hex << tp.id() << "->" << filteringParent;
                                         pointerEventInstance(dev)->pointById(tp.id())->setGrabberItem(filteringParent);
                                         touchMouseUnset = false; // We want to leave touchMouseId and touchMouseDevice set
                                         if (mouseEvent->isAccepted())
diff --git a/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp b/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
index 336107a61d..a566a2bed6 100644
--- a/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
+++ b/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
@@ -448,13 +448,13 @@ void qsg_dumpShadowRoots(Node *n)
     QByteArray ind(indent, ' ');
 
     if (n->type() == QSGNode::ClipNodeType || n->isBatchRoot) {
-        qDebug() << ind.constData() << "[X]" << n->sgNode << hex << uint(n->sgNode->flags());
+        qDebug() << ind.constData() << "[X]" << n->sgNode << Qt::hex << uint(n->sgNode->flags());
         qsg_dumpShadowRoots(n->rootInfo(), indent);
     } else {
         QDebug d = qDebug();
-        d << ind.constData() << "[ ]" << n->sgNode << hex << uint(n->sgNode->flags());
+        d << ind.constData() << "[ ]" << n->sgNode << Qt::hex << uint(n->sgNode->flags());
         if (n->type() == QSGNode::GeometryNodeType)
-            d << "order" << dec << n->element()->order;
+            d << "order" << Qt::dec << n->element()->order;
     }
 
     SHADOWNODE_TRAVERSE(n)
@@ -2337,7 +2337,7 @@ void Renderer::uploadBatch(Batch *b)
                     iDump << "  -- Index Data, count:" << b->indexCount;
                     for (int i=0; i<b->indexCount; ++i) {
                         if ((i % 24) == 0)
-                            iDump << endl << "  --- ";
+                            iDump << Qt::endl << "  --- ";
                         iDump << id[i];
                     }
                 }
@@ -2350,7 +2350,7 @@ void Renderer::uploadBatch(Batch *b)
                     iDump << "  -- Index Data, count:" << b->indexCount;
                     for (int i=0; i<b->indexCount; ++i) {
                         if ((i % 24) == 0)
-                            iDump << endl << "  --- ";
+                            iDump << Qt::endl << "  --- ";
                         iDump << id[i];
                     }
                 }
@@ -3952,8 +3952,8 @@ void Renderer::setGraphicsPipeline(QRhiCommandBuffer *cb, const Batch *batch, El
 void Renderer::renderBatches()
 {
     if (Q_UNLIKELY(debug_render())) {
-        qDebug().nospace() << "Rendering:" << endl
-                           << " -> Opaque: " << qsg_countNodesInBatches(m_opaqueBatches) << " nodes in " << m_opaqueBatches.size() << " batches..." << endl
+        qDebug().nospace() << "Rendering:" << Qt::endl
+                           << " -> Opaque: " << qsg_countNodesInBatches(m_opaqueBatches) << " nodes in " << m_opaqueBatches.size() << " batches..." << Qt::endl
                            << " -> Alpha: " << qsg_countNodesInBatches(m_alphaBatches) << " nodes in " << m_alphaBatches.size() << " batches...";
     }
 
diff --git a/src/quick/scenegraph/coreapi/qsgnode.cpp b/src/quick/scenegraph/coreapi/qsgnode.cpp
index 1976538aec..7d9b74bc2b 100644
--- a/src/quick/scenegraph/coreapi/qsgnode.cpp
+++ b/src/quick/scenegraph/coreapi/qsgnode.cpp
@@ -1466,7 +1466,7 @@ QDebug operator<<(QDebug d, const QSGGeometryNode *n)
         d << "Geometry(null)";
         return d;
     }
-    d << "GeometryNode(" << hex << (const void *) n << dec;
+    d << "GeometryNode(" << Qt::hex << (const void *) n << Qt::dec;
 
     const QSGGeometry *g = n->geometry();
 
@@ -1517,7 +1517,7 @@ QDebug operator<<(QDebug d, const QSGClipNode *n)
         d << "ClipNode(null)";
         return d;
     }
-    d << "ClipNode(" << hex << (const void *) n << dec;
+    d << "ClipNode(" << Qt::hex << (const void *) n << Qt::dec;
 
     if (n->childCount())
         d << "children=" << n->childCount();
@@ -1540,7 +1540,7 @@ QDebug operator<<(QDebug d, const QSGTransformNode *n)
     }
     const QMatrix4x4 m = n->matrix();
     d << "TransformNode(";
-    d << hex << (const void *) n << dec;
+    d << Qt::hex << (const void *) n << Qt::dec;
     if (m.isIdentity())
         d << "identity";
     else if (m.determinant() == 1 && m(0, 0) == 1 && m(1, 1) == 1 && m(2, 2) == 1)
@@ -1562,7 +1562,7 @@ QDebug operator<<(QDebug d, const QSGOpacityNode *n)
         return d;
     }
     d << "OpacityNode(";
-    d << hex << (const void *) n << dec;
+    d << Qt::hex << (const void *) n << Qt::dec;
     d << "opacity=" << n->opacity()
       << "combined=" << n->combinedOpacity()
       << (n->isSubtreeBlocked() ? "*BLOCKED*" : "");
@@ -1581,7 +1581,7 @@ QDebug operator<<(QDebug d, const QSGRootNode *n)
         return d;
     }
     QDebugStateSaver saver(d);
-    d << "RootNode" << hex << (const void *) n << (n->isSubtreeBlocked() ? "*BLOCKED*" : "");
+    d << "RootNode" << Qt::hex << (const void *) n << (n->isSubtreeBlocked() ? "*BLOCKED*" : "");
 #ifdef QSG_RUNTIME_DESCRIPTION
     d << QSGNodePrivate::description(n);
 #endif
@@ -1614,8 +1614,8 @@ QDebug operator<<(QDebug d, const QSGNode *n)
         d << static_cast<const QSGOpacityNode *>(n);
         break;
     case QSGNode::RenderNodeType:
-        d << "RenderNode(" << hex << (const void *) n << dec
-          << "flags=" << (int) n->flags() << dec
+        d << "RenderNode(" << Qt::hex << (const void *) n << Qt::dec
+          << "flags=" << (int) n->flags() << Qt::dec
           << (n->isSubtreeBlocked() ? "*BLOCKED*" : "");
 #ifdef QSG_RUNTIME_DESCRIPTION
         d << QSGNodePrivate::description(n);
@@ -1623,8 +1623,8 @@ QDebug operator<<(QDebug d, const QSGNode *n)
         d << ')';
         break;
     default:
-        d << "Node(" << hex << (const void *) n << dec
-          << "flags=" << (int) n->flags() << dec
+        d << "Node(" << Qt::hex << (const void *) n << Qt::dec
+          << "flags=" << (int) n->flags() << Qt::dec
           << (n->isSubtreeBlocked() ? "*BLOCKED*" : "");
 #ifdef QSG_RUNTIME_DESCRIPTION
         d << QSGNodePrivate::description(n);
diff --git a/src/quick/scenegraph/qsgdefaultrendercontext.cpp b/src/quick/scenegraph/qsgdefaultrendercontext.cpp
index 4ccaa91cce..f43b5436a6 100644
--- a/src/quick/scenegraph/qsgdefaultrendercontext.cpp
+++ b/src/quick/scenegraph/qsgdefaultrendercontext.cpp
@@ -359,7 +359,7 @@ void QSGDefaultRenderContext::compileShader(QSGMaterialShader *shader, QSGMateri
         p->addCacheableShaderFromSourceCode(QOpenGLShader::Fragment, fragmentCode ? fragmentCode : shader->fragmentShader());
         p->link();
         if (!p->isLinked())
-            qWarning() << "shader compilation failed:" << endl << p->log();
+            qWarning() << "shader compilation failed:" << Qt::endl << p->log();
     } else {
         shader->compile();
     }
diff --git a/src/quick/scenegraph/util/qsgdefaultpainternode_p.h b/src/quick/scenegraph/util/qsgdefaultpainternode_p.h
index a86f7397be..dc103648ff 100644
--- a/src/quick/scenegraph/util/qsgdefaultpainternode_p.h
+++ b/src/quick/scenegraph/util/qsgdefaultpainternode_p.h
@@ -159,9 +159,6 @@ private:
     QSize m_textureSize;
     QRect m_dirtyRect;
     QColor m_fillColor;
-#if QT_VERSION >= 0x060000
-#warning "Remove m_contentsScale and assume 1 everywhere"
-#endif
     qreal m_contentsScale;
 
     bool m_dirtyContents : 1;
diff --git a/src/quick/util/qquickanimation.cpp b/src/quick/util/qquickanimation.cpp
index 2043b50545..588088b03a 100644
--- a/src/quick/util/qquickanimation.cpp
+++ b/src/quick/util/qquickanimation.cpp
@@ -903,7 +903,7 @@ void QActionAnimation::updateState(State newState, State oldState)
 
 void QActionAnimation::debugAnimation(QDebug d) const
 {
-    d << "ActionAnimation(" << hex << (const void *) this << dec << ")";
+    d << "ActionAnimation(" << Qt::hex << (const void *) this << Qt::dec << ")";
 
     if (animAction) {
         int indentLevel = 1;
@@ -1996,7 +1996,7 @@ void QQuickBulkValueAnimator::topLevelAnimationLoopChanged()
 
 void QQuickBulkValueAnimator::debugAnimation(QDebug d) const
 {
-    d << "BulkValueAnimation(" << hex << (const void *) this << dec << ")" << "duration:" << duration();
+    d << "BulkValueAnimation(" << Qt::hex << (const void *) this << Qt::dec << ")" << "duration:" << duration();
 
     if (animValue) {
         int indentLevel = 1;
diff --git a/src/quick/util/qquickanimatorjob.cpp b/src/quick/util/qquickanimatorjob.cpp
index 03be78ab15..92d62c8d24 100644
--- a/src/quick/util/qquickanimatorjob.cpp
+++ b/src/quick/util/qquickanimatorjob.cpp
@@ -184,7 +184,7 @@ void QQuickAnimatorProxyJob::updateState(QAbstractAnimationJob::State newState,
 
 void QQuickAnimatorProxyJob::debugAnimation(QDebug d) const
 {
-    d << "QuickAnimatorProxyJob("<< hex << (const void *) this << dec
+    d << "QuickAnimatorProxyJob("<< Qt::hex << (const void *) this << Qt::dec
       << "state:" << state() << "duration:" << duration()
       << "proxying: (" << job() << ')';
 }
@@ -266,7 +266,7 @@ QQuickAnimatorJob::QQuickAnimatorJob()
 
 void QQuickAnimatorJob::debugAnimation(QDebug d) const
 {
-    d << "QuickAnimatorJob(" << hex << (const void *) this << dec
+    d << "QuickAnimatorJob(" << Qt::hex << (const void *) this << Qt::dec
       << ") state:" << state() << "duration:" << duration()
       << "target:" << m_target << "value:" << m_value;
 }
diff --git a/src/quick/util/qquickimageprovider.h b/src/quick/util/qquickimageprovider.h
index 82d0501697..f3dba81446 100644
--- a/src/quick/util/qquickimageprovider.h
+++ b/src/quick/util/qquickimageprovider.h
@@ -92,9 +92,11 @@ private:
     Q_PRIVATE_SLOT(d_func(), void _q_finished())
 };
 
+class QQuickImageProviderOptions;
+
 class Q_QUICK_EXPORT QQuickImageProvider : public QQmlImageProviderBase
 {
-    friend class QQuickImageProviderWithOptions; // ### Qt 6 Remove
+    friend class QQuickImageProviderWithOptions;
 public:
     QQuickImageProvider(ImageType type, Flags flags = Flags());
     ~QQuickImageProvider() override;
@@ -102,15 +104,9 @@ public:
     ImageType imageType() const override;
     Flags flags() const override;
 
-#if QT_VERSION >= QT_VERSION_CHECK(6,0,0)
-    virtual QImage requestImage(const QString &id, QSize *size, const QSize& requestedSize, const QQuickImageProviderOptions &options);
-    virtual QPixmap requestPixmap(const QString &id, QSize *size, const QSize& requestedSize, const QQuickImageProviderOptions &options);
-    virtual QQuickTextureFactory *requestTexture(const QString &id, QSize *size, const QSize &requestedSize, const QQuickImageProviderOptions &options);
-#else
     virtual QImage requestImage(const QString &id, QSize *size, const QSize& requestedSize);
     virtual QPixmap requestPixmap(const QString &id, QSize *size, const QSize& requestedSize);
     virtual QQuickTextureFactory *requestTexture(const QString &id, QSize *size, const QSize &requestedSize);
-#endif
 
 private:
     QQuickImageProviderPrivate *d;
@@ -122,11 +118,7 @@ public:
     QQuickAsyncImageProvider();
     ~QQuickAsyncImageProvider() override;
 
-#if QT_VERSION >= QT_VERSION_CHECK(6,0,0)
-    virtual QQuickImageResponse *requestImageResponse(const QString &id, const QSize &requestedSize, const QQuickImageProviderOptions &options) = 0;
-#else
     virtual QQuickImageResponse *requestImageResponse(const QString &id, const QSize &requestedSize) = 0;
-#endif
 
 private:
     QQuickAsyncImageProviderPrivate *d;
diff --git a/src/quick/util/qquickpixmapcache_p.h b/src/quick/util/qquickpixmapcache_p.h
index ab5d391fa2..c4f4d1a101 100644
--- a/src/quick/util/qquickpixmapcache_p.h
+++ b/src/quick/util/qquickpixmapcache_p.h
@@ -189,8 +189,8 @@ private:
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(QQuickPixmap::Options)
 
-// This class will disappear with Qt6 and will just be the regular QQuickImageProvider
-// ### Qt 6: Remove this class and fold it with QQuickImageProvider
+// ### Qt 6: This should be made public in Qt 6. It's functionality can't be merged into
+// QQuickImageProvider without breaking source compatibility.
 class Q_QUICK_PRIVATE_EXPORT QQuickImageProviderWithOptions : public QQuickAsyncImageProvider
 {
 public:
diff --git a/src/quick/util/qquicksmoothedanimation.cpp b/src/quick/util/qquicksmoothedanimation.cpp
index bae57172d1..254b1af0a2 100644
--- a/src/quick/util/qquicksmoothedanimation.cpp
+++ b/src/quick/util/qquicksmoothedanimation.cpp
@@ -313,7 +313,7 @@ void QSmoothedAnimation::init()
 
 void QSmoothedAnimation::debugAnimation(QDebug d) const
 {
-    d << "SmoothedAnimationJob(" << hex << (const void *) this << dec << ")" << "duration:" << userDuration
+    d << "SmoothedAnimationJob(" << Qt::hex << (const void *) this << Qt::dec << ")" << "duration:" << userDuration
       << "velocity:" << velocity << "target:" << target.object() << "property:" << target.name()
       << "to:" << to << "current velocity:" << trackVelocity;
 }
diff --git a/src/quick/util/qquickspringanimation.cpp b/src/quick/util/qquickspringanimation.cpp
index 9012d20f9a..6f03d24750 100644
--- a/src/quick/util/qquickspringanimation.cpp
+++ b/src/quick/util/qquickspringanimation.cpp
@@ -319,7 +319,7 @@ void QSpringAnimation::updateState(QAbstractAnimationJob::State newState, QAbstr
 
 void QSpringAnimation::debugAnimation(QDebug d) const
 {
-    d << "SpringAnimationJob(" << hex << (const void *) this << dec << ")" << "velocity:" << maxVelocity
+    d << "SpringAnimationJob(" << Qt::hex << (const void *) this << Qt::dec << ")" << "velocity:" << maxVelocity
       << "spring:" << spring << "damping:" << damping << "epsilon:" << epsilon << "modulus:" << modulus
       << "mass:" << mass << "target:" << target.object() << "property:" << target.name()
       << "to:" << to << "current velocity:" << velocity;
diff --git a/src/quick/util/qquicktimeline.cpp b/src/quick/util/qquicktimeline.cpp
index ac9f75979e..7ec7c827eb 100644
--- a/src/quick/util/qquicktimeline.cpp
+++ b/src/quick/util/qquicktimeline.cpp
@@ -723,7 +723,7 @@ void QQuickTimeLine::updateCurrentTime(int v)
 
 void QQuickTimeLine::debugAnimation(QDebug d) const
 {
-    d << "QuickTimeLine(" << hex << (const void *) this << dec << ")";
+    d << "QuickTimeLine(" << Qt::hex << (const void *) this << Qt::dec << ")";
 }
 
 bool operator<(const QPair<int, Update> &lhs,
diff --git a/src/quickwidgets/qquickwidget.cpp b/src/quickwidgets/qquickwidget.cpp
index db76f3e62a..b16bfee6a6 100644
--- a/src/quickwidgets/qquickwidget.cpp
+++ b/src/quickwidgets/qquickwidget.cpp
@@ -1085,14 +1085,14 @@ void QQuickWidgetPrivate::setRootObject(QObject *obj)
         root = sgItem;
         sgItem->setParentItem(offscreenWindow->contentItem());
     } else if (qobject_cast<QWindow *>(obj)) {
-        qWarning() << "QQuickWidget does not support using windows as a root item." << endl
-                   << endl
-                   << "If you wish to create your root window from QML, consider using QQmlApplicationEngine instead." << endl;
+        qWarning() << "QQuickWidget does not support using windows as a root item." << Qt::endl
+                   << Qt::endl
+                   << "If you wish to create your root window from QML, consider using QQmlApplicationEngine instead." << Qt::endl;
     } else {
-        qWarning() << "QQuickWidget only supports loading of root objects that derive from QQuickItem." << endl
-                   << endl
-                   << "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;
+        qWarning() << "QQuickWidget only supports loading of root objects that derive from QQuickItem." << Qt::endl
+                   << Qt::endl
+                   << "Ensure your QML code is written for QtQuick 2, and uses a root that is or" << Qt::endl
+                   << "inherits from QtQuick's Item (not a Timer, QtObject, etc)." << Qt::endl;
         delete obj;
         root = nullptr;
     }
diff --git a/tests/auto/qml/qqmlmoduleplugin/data/importsMixedQmlCppPlugin.2.qml b/tests/auto/qml/qqmlmoduleplugin/data/importsMixedQmlCppPlugin.2.qml
index b13b2004c2..ba6bb3d7ac 100644
--- a/tests/auto/qml/qqmlmoduleplugin/data/importsMixedQmlCppPlugin.2.qml
+++ b/tests/auto/qml/qqmlmoduleplugin/data/importsMixedQmlCppPlugin.2.qml
@@ -1,5 +1,6 @@
 import org.qtproject.AutoTestQmlMixedPluginType 1.5
 import QtQuick 2.0
+import QtQml 2.0
 
 Item {
     property bool test: false
diff --git a/tests/auto/qml/qqmlmoduleplugin/data/importsMixedQmlCppPlugin.qml b/tests/auto/qml/qqmlmoduleplugin/data/importsMixedQmlCppPlugin.qml
index 563c0b28e3..f1268075c1 100644
--- a/tests/auto/qml/qqmlmoduleplugin/data/importsMixedQmlCppPlugin.qml
+++ b/tests/auto/qml/qqmlmoduleplugin/data/importsMixedQmlCppPlugin.qml
@@ -1,5 +1,6 @@
 import org.qtproject.AutoTestQmlMixedPluginType 1.0
 import QtQuick 2.0
+import QtQml 2.0
 
 Item {
     property bool test: false
diff --git a/tests/auto/qml/qqmlmoduleplugin/tst_qqmlmoduleplugin.cpp b/tests/auto/qml/qqmlmoduleplugin/tst_qqmlmoduleplugin.cpp
index f89cc9f24a..a3d1858d6b 100644
--- a/tests/auto/qml/qqmlmoduleplugin/tst_qqmlmoduleplugin.cpp
+++ b/tests/auto/qml/qqmlmoduleplugin/tst_qqmlmoduleplugin.cpp
@@ -34,6 +34,10 @@
 #include <QtCore/qjsondocument.h>
 #include <QtCore/qjsonarray.h>
 #include <QDebug>
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+#include <QCborMap>
+#include <QCborValue>
+#endif
 
 #if defined(Q_OS_MAC)
 // For _PC_CASE_SENSITIVE
@@ -131,8 +135,7 @@ QByteArray SecondStaticPlugin::metaData;
 template <typename PluginType>
 void registerStaticPlugin(const char *uri)
 {
-    QStaticPlugin plugin;
-    plugin.instance = []() {
+    auto instanceFunctor = []() {
         static PluginType plugin;
         return static_cast<QObject*>(&plugin);
     };
@@ -143,12 +146,28 @@ void registerStaticPlugin(const char *uri)
     uris.append(uri);
     md.insert(QStringLiteral("uri"), uris);
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    PluginType::metaData.append(QLatin1String("QTMETADATA !"));
+    PluginType::metaData.append(char(0)); // current version
+    PluginType::metaData.append(char(QT_VERSION_MAJOR));
+    PluginType::metaData.append(char(QT_VERSION_MINOR));
+    PluginType::metaData.append(char(qPluginArchRequirements()));
+    PluginType::metaData.append(QCborValue(QCborMap::fromJsonObject(md)).toCbor());
+
+    auto rawMetaDataFunctor = []() -> QPluginMetaData {
+        return {reinterpret_cast<const uchar *>(PluginType::metaData.constData()), size_t(PluginType::metaData.length())};
+    };
+    QStaticPlugin plugin(instanceFunctor, rawMetaDataFunctor);
+#else
     PluginType::metaData.append(QLatin1String("QTMETADATA  "));
     PluginType::metaData.append(QJsonDocument(md).toBinaryData());
 
+    QStaticPlugin plugin;
+    plugin.instance = instanceFunctor;
     plugin.rawMetaData = []() {
         return PluginType::metaData.constData();
     };
+#endif
     qRegisterStaticPluginFunction(plugin);
 };
 
diff --git a/tests/auto/quick/qquicktext/BLACKLIST b/tests/auto/quick/qquicktext/BLACKLIST
index 6c3c3af154..594f9af3b3 100644
--- a/tests/auto/quick/qquicktext/BLACKLIST
+++ b/tests/auto/quick/qquicktext/BLACKLIST
@@ -4,3 +4,5 @@ qemu
 osx-10.12
 [fontSizeMode]
 opensuse-42.1
+[contentSize]
+windows gcc
diff --git a/tests/auto/quick/rendernode/tst_rendernode.cpp b/tests/auto/quick/rendernode/tst_rendernode.cpp
index 6ca5231343..e75e9e30b9 100644
--- a/tests/auto/quick/rendernode/tst_rendernode.cpp
+++ b/tests/auto/quick/rendernode/tst_rendernode.cpp
@@ -194,7 +194,7 @@ static bool fuzzyCompareColor(QRgb x, QRgb y, QByteArray *errorMessage)
     enum { fuzz = 4 };
     if (qAbs(qRed(x) - qRed(y)) >= fuzz || qAbs(qGreen(x) - qGreen(y)) >= fuzz || qAbs(qBlue(x) - qBlue(y)) >= fuzz) {
         QString s;
-        QDebug(&s).nospace() << hex << "Color mismatch 0x" << x << " 0x" << y << dec << " (fuzz=" << fuzz << ").";
+        QDebug(&s).nospace() << Qt::hex << "Color mismatch 0x" << x << " 0x" << y << Qt::dec << " (fuzz=" << fuzz << ").";
         *errorMessage = s.toLocal8Bit();
         return false;
     }
diff --git a/tests/auto/quick/shared/visualtestutil.cpp b/tests/auto/quick/shared/visualtestutil.cpp
index de2cf2bd5b..06f7386902 100644
--- a/tests/auto/quick/shared/visualtestutil.cpp
+++ b/tests/auto/quick/shared/visualtestutil.cpp
@@ -95,7 +95,7 @@ bool QQuickVisualTestUtil::compareImages(const QImage &ia, const QImage &ib, QSt
                 || qAbs(qRed(a) - qRed(b)) > tolerance
                 || qAbs(qRed(a) - qRed(b)) > tolerance) {
                 QDebug(errorMessage) << "Mismatch at:" << x << y << ':'
-                    << hex << showbase << a << b;
+                    << Qt::hex << Qt::showbase << a << b;
                 return false;
             }
         }
diff --git a/tools/qmlcachegen/qmlcachegen.cpp b/tools/qmlcachegen/qmlcachegen.cpp
index 41171b3f07..18415afd1d 100644
--- a/tools/qmlcachegen/qmlcachegen.cpp
+++ b/tools/qmlcachegen/qmlcachegen.cpp
@@ -373,7 +373,7 @@ static bool saveUnitAsCpp(const QString &inputFileName, const QString &outputFil
         {
             QTextStream stream(&hexifiedData);
             const uchar *end = begin + size;
-            stream << hex;
+            stream << Qt::hex;
             int col = 0;
             for (const uchar *data = begin; data < end; ++data, ++col) {
                 if (data > begin)
diff --git a/tools/qmlpreview/qmlpreviewapplication.cpp b/tools/qmlpreview/qmlpreviewapplication.cpp
index 17017dae77..2568425573 100644
--- a/tools/qmlpreview/qmlpreviewapplication.cpp
+++ b/tools/qmlpreview/qmlpreviewapplication.cpp
@@ -195,7 +195,7 @@ void QmlPreviewApplication::processFinished()
 void QmlPreviewApplication::logError(const QString &error)
 {
     QTextStream err(stderr);
-    err << "Error: " << error << endl;
+    err << "Error: " << error << Qt::endl;
 }
 
 void QmlPreviewApplication::logStatus(const QString &status)
@@ -203,7 +203,7 @@ void QmlPreviewApplication::logStatus(const QString &status)
     if (!m_verbose)
         return;
     QTextStream err(stderr);
-    err << status << endl;
+    err << status << Qt::endl;
 }
 
 void QmlPreviewApplication::serveRequest(const QString &path)