Build System Changes in Qt 6

Building Qt from sources now requires CMake and Ninja. See Build System Changes in Qt 6 for more details on this and other changes in configure.

Changes to Supported Modules

Qt 6.0 is streamlined compared to Qt 5 and some modules are no longer in the default installation of Qt 6.0. Because of the modularized structure of Qt, new modules or previous Qt 5 modules may appear in future releases of Qt 6. For more information, visit the All Modules page.

The Changes to Qt Modules has a list of API changes in Qt 6.0.

New Modules in Qt 6.0

The following are new modules in Qt 6.0.

• Qt 5 Core Compatibility APIs
• Qt Shader Tools - for graphics and compute shaders

Removed Modules in Qt 6.0

The following are Qt 5 modules that are not in Qt 6.0. They may be re-introduced in a future release of Qt 6.

New Classes and Functions

The section provides a comprehensive list of all new classes and functions introduced in Qt 6.

• New Namespaces
• New Classes
• New Member Functions
• New Functions in Namespaces
• New Global Functions
• New Macros
• New Enum Types
• New Type Aliases
• New Properties
• New Variables
• New QML Types
• New QML Properties

New Namespaces

New Classes

New Member Functions

Class QAbstractItemModel:

Class QAbstractProxyModel:

Class QBitArray:

Class QByteArray:

Class QChar:

Class QDataStream:

Class QDateTime:

Class QDate:

Class QDebug:

Class QDir:

Class QEvent:

Class QExplicitlySharedDataPointer:

Class QFile:

Class QFileInfo:

Class QFuture:

Class QFutureWatcher:

Class QHash:

Class QIODevice:

Class QJsonValue:

Class QLatin1String:

Class QLibraryInfo:

Class QList:

Class QLocale:

Class QMap:

Class QMargins:

Class QMarginsF:

Class QMetaMethod:

Class QMetaProperty:

Class QMetaSequence:

Class QMetaType:

Class QModelIndex:

Class QMultiHash:

Class QMultiMap:

Class QPersistentModelIndex:

Class QPointer:

Class QProcess:

Class QRect:

Class QRegularExpression:

Class QSharedDataPointer:

Class QSortFilterProxyModel:

Class QString:

Class QStringListModel:

Class QStringView:

Class QStringTokenizer:

Class QThreadPool:

Class QTime:

Class QTypeRevision:

Class QUnhandledException:

Class QVariant:

Class QVarLengthArray:

Class QAction:

Class QIcon:

Class QImage:

Class QImageIOHandler:

Class QImageReader:

Class QInputEvent:

Class QKeyEvent:

Class QPagedPaintDevice:

Class QRegion:

Class QShortcut:

Class QStandardItem:

Class QSurfaceFormat:

Class QTextCharFormat:

Class QTextDocument:

Class QWindow:

Class QSslConfiguration:

Class QSslSocket:

Class QQmlApplicationEngine:

Class QSGMetalTexture:

Class QSGD3D11Texture:

Class QSGVulkanTexture:

Class QSGOpenGLTexture:

Class QQuickItem:

Class QQuickRenderControl:

Class QQuickWindow:

Class QSGRenderNode:

Class QSqlDriver:

Class QSqlQuery:

Class QAbstractItemView:

Class QGraphicsLayoutItem:

Class QHeaderView:

Class QLabel:

Class QWidget:

New Functions in Namespaces

New Global Functions

New Macros

New Enum Types

New Type Aliases

New Properties

• readOnly : const
• autoAcceptChildRows : const
• additionalShmFormats : const

New Variables

New QML Types

New QML Properties