New Classes and Functions in Qt 6.0

The section provides a comprehensive list of all new classes and functions introduced in Qt 6.0.

New Namespaces

(since 6.0) namespace QNativeInterface
(since 6.0) namespace QQuickOpenGLUtils

New Classes

New Member Functions

Class QAbstractItemModel:

(since 6.0) virtual bool clearItemData(const QModelIndex &index)
(since 6.0) virtual void multiData(const QModelIndex &index, QModelRoleDataSpan roleDataSpan) const

Class QAbstractItemView:

(since 6.0) virtual void initViewItemOption(int *option) const
(since 6.0) virtual QAbstractItemDelegate *itemDelegateForIndex(const QModelIndex &index) const

Class QAbstractProxyModel:

(since 6.0) virtual bool clearItemData(const QModelIndex &index) override

Class QAction:

(since 6.0) QList<QObject *> associatedObjects() const

Class QBitArray:

(since 6.0) quint32 toUInt32(QSysInfo::Endian endianness, bool *ok) const

Class QBitmap:

(since 6.0) QBitmap fromPixmap(const QPixmap &pixmap)

Class QBluetoothDeviceInfo:

(since 6.0) QList<QBluetoothUuid> serviceUuids() const

Class QByteArray:

(since 6.0) int compare(QByteArrayView bv, Qt::CaseSensitivity cs) const
(since 6.0) bool contains(QByteArrayView bv) const
(since 6.0) int count(QByteArrayView bv) const
(since 6.0) bool endsWith(QByteArrayView bv) const
(since 6.0) QByteArray first(int n) &&
(since 6.0) QByteArray first(int n) const &
(since 6.0) int indexOf(QByteArrayView bv, int from) const
(since 6.0) QByteArray &insert(int i, QByteArrayView data)
(since 6.0) QByteArray last(int n) &&
(since 6.0) QByteArray last(int n) const &
(since 6.0) int lastIndexOf(QByteArrayView bv, int from) const
(since 6.0) void push_back(QByteArrayView str)
(since 6.0) void push_front(QByteArrayView str)
(since 6.0) QByteArray &replace(QByteArrayView before, QByteArrayView after)
(since 6.0) QByteArray sliced(int pos, int n) &&
(since 6.0) QByteArray sliced(int pos, int n) const &
(since 6.0) QByteArray sliced(int pos) &&
(since 6.0) QByteArray sliced(int pos) const &
(since 6.0) bool startsWith(QByteArrayView bv) const

Class QCanBusDeviceInfo:

(since 6.0) QString alias() const

Class QDataStream:

(since 6.0) QDataStream &operator<<(char16_t c)
(since 6.0) QDataStream &operator<<(char32_t c)
(since 6.0) QDataStream &operator<<(QDataStream &out, const int &pair)
(since 6.0) QDataStream &operator>>(char16_t &c)
(since 6.0) QDataStream &operator>>(char32_t &c)
(since 6.0) QDataStream &operator>>(QDataStream &in, int &pair)

Class QDir:

(since 6.0) void addSearchPath(const QString &prefix, const std::filesystem::path &path)
(since 6.0) void setPath(const std::filesystem::path &path)

Class QEvent:

(since 6.0) virtual QEvent *clone() const
(since 6.0) bool isInputEvent() const
(since 6.0) bool isPointerEvent() const
(since 6.0) bool isSinglePointEvent() const

Class QExplicitlySharedDataPointer:

(since 6.0) T *get() const
(since 6.0) void reset(T *ptr)

Class QFile:

(since 6.0) bool copy(const std::filesystem::path &newName)
(since 6.0) bool link(const std::filesystem::path &newName)
(since 6.0) QFileDevice::Permissions permissions(const std::filesystem::path &filename)
(since 6.0) bool rename(const std::filesystem::path &newName)
(since 6.0) void setFileName(const std::filesystem::path &name)
(since 6.0) bool setPermissions(const std::filesystem::path &filename, QFileDevice::Permissions permissionSpec)

Class QFileInfo:

(since 6.0) void setFile(const std::filesystem::path &path)
(since 6.0) void stat()

Class QGraphicsLayoutItem:

(since 6.0) virtual bool isEmpty() const

Class QHash:

(since 6.0) size_t qHash(QPoint key, size_t seed)
(since 6.0) size_t qHash(char16_t key, size_t seed)
(since 6.0) size_t qHash(char32_t key, size_t seed)
(since 6.0) size_t qHash(char8_t key, size_t seed)
(since 6.0) size_t qHash(const QTypeRevision &key, size_t seed)
(since 6.0) size_t qHash(wchar_t key, size_t seed)
(since 6.0) size_t qHashMulti(size_t seed, const T &... args)
(since 6.0) size_t qHashMultiCommutative(size_t seed, const T &... args)

Class QIODevice:

(since 6.0) virtual qint64 skipData(qint64 maxSize)

Class QIcon:

(since 6.0) QPixmap pixmap(const QSize &size, qreal devicePixelRatio, QIcon::Mode mode, QIcon::State state) const

Class QImage:

(since 6.0) QImage convertedTo(QImage::Format format, Qt::ImageConversionFlags flags) &&
(since 6.0) QImage convertedTo(QImage::Format format, Qt::ImageConversionFlags flags) const &
(since 6.0) QImage fromHBITMAP(HBITMAP hbitmap)
(since 6.0) QImage fromHICON(HICON icon)
(since 6.0) void mirror(bool horizontal, bool vertical)
(since 6.0) void rgbSwap()
(since 6.0) HBITMAP toHBITMAP() const
(since 6.0) HICON toHICON(const QImage &mask) const

Class QImageIOHandler:

(since 6.0) bool allocateImage(QSize size, QImage::Format format, QImage *image)

Class QImageReader:

(since 6.0) int allocationLimit()
(since 6.0) void setAllocationLimit(int mbLimit)

Class QInputEvent:

(since 6.0) const QInputDevice *device() const

Class QJsonValue:

(since 6.0) qint64 toInteger(qint64 defaultValue) const

Class QKeyEvent:

(since 6.0) QKeyCombination keyCombination() const

Class QLabel:

(since 6.0) QPicture picture() const

Class QLatin1StringView:

(since 6.0) QLatin1StringView first(int n) const
(since 6.0) QLatin1StringView last(int n) const
(since 6.0) QLatin1StringView sliced(int pos) const
(since 6.0) QLatin1StringView sliced(int pos, int n) const
(since 6.0) int tokenize(Needle &&sep, Flags... flags) const

Class QLibraryInfo:

(since 6.0) QString path(QLibraryInfo::LibraryPath p)

Class QList:

(since 6.0) void append(QList<T> &&value)
(since 6.0) QList<T> first(int n) const
(since 6.0) QList<T> last(int n) const
(since 6.0) QList<T> &operator+=(QList<T> &&other)
(since 6.0) QList<T> &operator<<(QList<T> &&other)
(since 6.0) void resize(int size)
(since 6.0) void resize(int size, QList<T>::parameter_type c)
(since 6.0) QList<T> sliced(int pos, int n) const
(since 6.0) QList<T> sliced(int pos) const

Class QLocale:

(since 6.0) QString quoteString(QStringView str, QLocale::QuotationStyle style) const

Class QMap:

(since 6.0) QMap<Key, T>::iterator erase(QMap<Key, T>::const_iterator first, QMap<Key, T>::const_iterator last)
(since 6.0) int toStdMap() &&

Class QMargins:

(since 6.0) QMargins operator|(const QMargins &m1, const QMargins &m2)

Class QMarginsF:

(since 6.0) QMarginsF operator|(const QMarginsF &m1, const QMarginsF &m2)

Class QMetaMethod:

(since 6.0) QMetaType parameterMetaType(int index) const
(since 6.0) QByteArray parameterTypeName(int index) const
(since 6.0) int relativeMethodIndex() const
(since 6.0) QMetaType returnMetaType() const

Class QMetaProperty:

(since 6.0) QUntypedBindable bindable(QObject *object) const
(since 6.0) bool isBindable() const
(since 6.0) QMetaType metaType() const
(since 6.0) int typeId() const

Class QMetaSequence:

(since 6.0) QMetaSequence fromContainer()
(since 6.0) bool operator!=(const QMetaSequence &lhs, const QMetaSequence &rhs)
(since 6.0) bool operator==(const QMetaSequence &lhs, const QMetaSequence &rhs)

Class QMetaType:

(since 6.0) int alignOf() const
(since 6.0) QPartialOrdering compare(const void *lhs, const void *rhs) const
(since 6.0) bool equals(const void *lhs, const void *rhs) const
(since 6.0) bool hasRegisteredDebugStreamOperator() const
(since 6.0) bool hasRegisteredMutableViewFunction()
(since 6.0) bool registerMutableView(To (From::*)() function)
(since 6.0) bool registerMutableView(UnaryFunction function)
(since 6.0) bool view(QMetaType fromType, void *from, QMetaType toType, void *to)

Class QModbusReply:

(since 6.0) QList<QModbusDevice::IntermediateError> intermediateErrors() const

Class QMultiHash:

(since 6.0) QMultiHash<Key, T> &unite(const QHash<Key, T> &other)

Class QMultiMap:

(since 6.0) QMultiMap<Key, T>::iterator erase(QMultiMap<Key, T>::const_iterator first, QMultiMap<Key, T>::const_iterator last)

Class QSGD3D11Texture:

(since 6.0) QSGTexture *fromNative(void *texture, QQuickWindow *window, const QSize &size, QQuickWindow::CreateTextureOptions options)

Class QPagedPaintDevice:

(since 6.0) QPageRanges pageRanges() const
(since 6.0) virtual void setPageRanges(const QPageRanges &ranges)

Class QPersistentModelIndex:

(since 6.0) void multiData(QModelRoleDataSpan roleDataSpan) const

Class QPointer:

(since 6.0) T *get() const

Class QQmlApplicationEngine:

(since 6.0) void setExtraFileSelectors(const QStringList &extraFileSelectors)

Class QQmlExtensionPlugin:

(since 6.0) virtual void unregisterTypes()

Class QQuickItem:

(since 6.0) virtual void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry)

Class QQuickRenderControl:

(since 6.0) void beginFrame()
(since 6.0) void endFrame()
(since 6.0) bool initialize()
(since 6.0) int samples() const
(since 6.0) void setSamples(int sampleCount)
(since 6.0) QQuickWindow *window() const

Class QQuickWindow:

(since 6.0) void afterFrameEnd()
(since 6.0) void beforeFrameBegin()
(since 6.0) QSGRendererInterface::GraphicsApi graphicsApi()
(since 6.0) QQuickGraphicsConfiguration graphicsConfiguration() const
(since 6.0) QQuickGraphicsDevice graphicsDevice() const
(since 6.0) QQuickRenderTarget renderTarget() const
(since 6.0) void setGraphicsApi(QSGRendererInterface::GraphicsApi api)
(since 6.0) void setGraphicsConfiguration(const QQuickGraphicsConfiguration &config)
(since 6.0) void setGraphicsDevice(const QQuickGraphicsDevice &device)
(since 6.0) void setRenderTarget(const QQuickRenderTarget &target)

Class QRect:

(since 6.0) QRect span(const QPoint &p1, const QPoint &p2)

Class QRegion:

(since 6.0) QRegion fromHRGN(HRGN hrgn)
(since 6.0) HRGN toHRGN() const

Class QRegularExpression:

(since 6.0) QRegularExpression fromWildcard(QStringView pattern, Qt::CaseSensitivity cs, QRegularExpression::WildcardConversionOptions options)

Class QSGRenderNode:

(since 6.0) virtual void prepare()

Class QSGTexture:

(since 6.0) virtual void commitTextureOperations(QRhi *rhi, QRhiResourceUpdateBatch *resourceUpdates)
(since 6.0) virtual QRhiTexture *rhiTexture() const

Class QSharedDataPointer:

(since 6.0) T *get()
(since 6.0) const T *get() const
(since 6.0) void reset(T *ptr)
(since 6.0) T *take()

Class QShortcut:

(since 6.0) QList<QKeySequence> keys() const
(since 6.0) void setKeys(QKeySequence::StandardKey key)
(since 6.0) void setKeys(const QList<QKeySequence> &keys)

Class QSortFilterProxyModel:

(since 6.0) void invalidateColumnsFilter()
(since 6.0) void invalidateRowsFilter()

Class QSqlDriver:

(since 6.0) virtual int maximumIdentifierLength(QSqlDriver::IdentifierType type) const

Class QSqlQuery:

(since 6.0) QVariantList boundValues() const

Class QSslConfiguration:

(since 6.0) bool handshakeMustInterruptOnError() const
(since 6.0) bool missingCertificateIsFatal() const
(since 6.0) void setCiphers(const QString &ciphers)
(since 6.0) void setHandshakeMustInterruptOnError(bool interrupt)
(since 6.0) void setMissingCertificateIsFatal(bool cannotRecover)

Class QSslSocket:

(since 6.0) void continueInterruptedHandshake()

Class QStandardItem:

(since 6.0) virtual void multiData(QModelRoleDataSpan roleDataSpan) const

Class QString:

(since 6.0) QString &append(QStringView v)
(since 6.0) int count(QStringView str, Qt::CaseSensitivity cs) const
(since 6.0) QString first(int n) &&
(since 6.0) QString first(int n) const &
(since 6.0) QString fromLatin1(QByteArrayView str)
(since 6.0) QString fromLocal8Bit(QByteArrayView str)
(since 6.0) QString fromUtf8(QByteArrayView str)
(since 6.0) QString fromUtf8(const char8_t *str, int size)
(since 6.0) QString &insert(int position, QStringView str)
(since 6.0) QString last(int n) &&
(since 6.0) QString last(int n) const &
(since 6.0) int localeAwareCompare(QStringView other) const
(since 6.0) int localeAwareCompare(QStringView s1, QStringView s2)
(since 6.0) QString &operator+=(QStringView str)
(since 6.0) QString &prepend(QStringView str)
(since 6.0) QString sliced(int pos, int n) &&
(since 6.0) QString sliced(int pos, int n) const &
(since 6.0) QString sliced(int pos) &&
(since 6.0) QString sliced(int pos) const &
(since 6.0) int tokenize(Needle &&sep, Flags... flags) &&
(since 6.0) int tokenize(Needle &&sep, Flags... flags) const &&
(since 6.0) int tokenize(Needle &&sep, Flags... flags) const &

Class QStringListModel:

(since 6.0) virtual bool clearItemData(const QModelIndex &index) override

Class QStringTokenizer:

(since 6.0) int qTokenize(Haystack &&haystack, Needle &&needle, Flags... flags)

Class QStringView:

(since 6.0) QStringView::const_pointer constData() const
(since 6.0) int count(QChar ch, Qt::CaseSensitivity cs) const
(since 6.0) int count(QStringView str, Qt::CaseSensitivity cs) const
(since 6.0) QStringView first(int n) const
(since 6.0) QStringView last(int n) const
(since 6.0) QStringView sliced(int pos, int n) const
(since 6.0) QStringView sliced(int pos) const
(since 6.0) QList<QStringView> split(QChar sep, Qt::SplitBehavior behavior, Qt::CaseSensitivity cs) const
(since 6.0) QList<QStringView> split(QStringView sep, Qt::SplitBehavior behavior, Qt::CaseSensitivity cs) const
(since 6.0) CFStringRef toCFString() const
(since 6.0) double toDouble(bool *ok) const
(since 6.0) float toFloat(bool *ok) const
(since 6.0) int toInt(bool *ok, int base) const
(since 6.0) long toLong(bool *ok, int base) const
(since 6.0) qlonglong toLongLong(bool *ok, int base) const
(since 6.0) NSString *toNSString() const
(since 6.0) short toShort(bool *ok, int base) const
(since 6.0) uint toUInt(bool *ok, int base) const
(since 6.0) ulong toULong(bool *ok, int base) const
(since 6.0) qulonglong toULongLong(bool *ok, int base) const
(since 6.0) ushort toUShort(bool *ok, int base) const
(since 6.0) int tokenize(Needle &&sep, Flags... flags) const

Class QSurfaceFormat:

(since 6.0) void setColorSpace(const QColorSpace &colorSpace)

Class QTextCharFormat:

(since 6.0) qreal baselineOffset() const
(since 6.0) void setBaselineOffset(qreal baseline)
(since 6.0) void setSubScriptBaseline(qreal baseline)
(since 6.0) void setSuperScriptBaseline(qreal baseline)
(since 6.0) qreal subScriptBaseline() const
(since 6.0) qreal superScriptBaseline() const

Class QTextDocument:

(since 6.0) qreal baselineOffset() const
(since 6.0) void setBaselineOffset(qreal baseline)
(since 6.0) void setSubScriptBaseline(qreal baseline)
(since 6.0) void setSuperScriptBaseline(qreal baseline)
(since 6.0) qreal subScriptBaseline() const
(since 6.0) qreal superScriptBaseline() const

Class QThreadPool:

(since 6.0) bool contains(const QThread *thread) const

Class QTypeRevision:

(since 6.0) QDataStream &operator<<(QDataStream &out, const QTypeRevision &revision)
(since 6.0) QDataStream &operator>>(QDataStream &in, QTypeRevision &revision)

Class QUnhandledException:

(since 6.0) int exception() const

Class QVarLengthArray:

(since 6.0) QVarLengthArray<T, Prealloc> &operator=(QVarLengthArray<T, Prealloc> &&other)

Class QVariant:

(since 6.0) bool canConvert(QMetaType type) const
(since 6.0) QPartialOrdering compare(const QVariant &lhs, const QVariant &rhs)
(since 6.0) bool convert(QMetaType targetType)
(since 6.0) QMetaType metaType() const

Class QWidget:

(since 6.0) QPointF mapFrom(const QWidget *parent, const QPointF &pos) const
(since 6.0) QPointF mapFromGlobal(const QPointF &pos) const
(since 6.0) QPointF mapFromParent(const QPointF &pos) const
(since 6.0) QPointF mapTo(const QWidget *parent, const QPointF &pos) const
(since 6.0) QPointF mapToGlobal(const QPointF &pos) const
(since 6.0) QPointF mapToParent(const QPointF &pos) const

Class QWindow:

(since 6.0) QPointF mapFromGlobal(const QPointF &pos) const
(since 6.0) QPointF mapToGlobal(const QPointF &pos) const
(since 6.0) virtual void paintEvent(QPaintEvent *ev)

New Functions in Namespaces

(since 6.0) void resetOpenGLState()
(since 6.0) QtConcurrent::QTaskBuilder<Task> task(Task &&task)

New Global Functions

(since 6.0) long double qDegreesToRadians(long double degrees)
(since 6.0) long double qRadiansToDegrees(long double radians)

New Macros

(since 6.0) QT_IMPLICIT_QFILEINFO_CONSTRUCTION
(since 6.0) QT_NO_FOREACH
(since 6.0) Q_MOC_INCLUDE
(since 6.0) Q_OBJECT_BINDABLE_PROPERTY(containingClass, type, name, signal)
(since 6.0) Q_OBJECT_BINDABLE_PROPERTY_WITH_ARGS(containingClass, type, name, initialvalue, signal)
(since 6.0) Q_OBJECT_COMPUTED_PROPERTY(containingClass, type, name, callback)

New Enum Types

(since 6.0) enum IntermediateError { ResponseCrcError, ResponseRequestMismatch }
(since 6.0) enum WildcardConversionOption { DefaultWildcardConversion, UnanchoredWildcardConversion, NonPathWildcardConversion }
(since 6.0) enum class AlertLevel { Warning, Fatal, Unknown }
(since 6.0) enum class AlertType { CloseNotify, UnexpectedMessage, BadRecordMac, RecordOverflow, DecompressionFailure, …, UnknownAlertMessage }
(since 6.0) enum class Launch { Sync, Async, Inherit }

New Enum Values

New Type Aliases

(since 6.0) iterator
(since 6.0) iterator

New Properties

New Variables

(since 6.0) MacOSBigSur

New QML Types

New QML Properties

QML Type FontLoader:

(since 6.0) font : font

QML Type GeometryRenderer:

(since 6.0) sortIndex : real

QML Type Item:

(since 6.0) palette : Palette

QML Type SceneEnvironment:

(since 6.0) tonemapMode : enumeration

QML Type Text:

(since 6.0) renderTypeQuality : int

QML Type Window:

(since 6.0) palette : Palette