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

namespace QNativeInterface
namespace QQuickOpenGLUtils

New Classes

New Member Functions

Class QAbstractItemModel:

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

Class QAbstractItemView:

virtual void initViewItemOption(QStyleOptionViewItem *option) const
virtual QAbstractItemDelegate *itemDelegateForIndex(const QModelIndex &index) const

Class QAbstractProxyModel:

virtual bool clearItemData(const QModelIndex &index) override

Class QAction:

QList<QObject *> associatedObjects() const

Class QBitArray:

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

Class QBitmap:

QBitmap fromPixmap(const QPixmap &pixmap)

Class QBluetoothDeviceInfo:

QList<QBluetoothUuid> serviceUuids() const

Class QByteArray:

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

Class QCanBusDeviceInfo:

QString alias() const

Class QChar:

QChar fromUcs2(char16_t c)
R fromUcs4(char32_t c)

Class QDataStream:

QDataStream &operator<<(char16_t c)
QDataStream &operator<<(char32_t c)
QDataStream &operator<<(QDataStream &out, const std::pair<T1, T2> &pair)
QDataStream &operator>>(char16_t &c)
QDataStream &operator>>(char32_t &c)
QDataStream &operator>>(QDataStream &in, std::pair<T1, T2> &pair)

Class QDate:

QDate fromString(QStringView string, Qt::DateFormat format)
QDate fromString(QStringView string, QStringView format, QCalendar cal)
QDate fromString(const QString &string, QStringView format, QCalendar cal)

Class QDateTime:

QDateTime fromString(QStringView string, Qt::DateFormat format)
QDateTime fromString(QStringView string, QStringView format, QCalendar cal)
QDateTime fromString(const QString &string, QStringView format, QCalendar cal)

Class QDebug:

QDebug &operator<<(const char16_t *t)
QDebug &operator<<(QUtf8StringView s)
QDebug &operator<<(QByteArrayView t)
QString toString(T &&object)

Class QDir:

void addSearchPath(const QString &prefix, const std::filesystem::path &path)
std::filesystem::path filesystemAbsolutePath() const
std::filesystem::path filesystemCanonicalPath() const
std::filesystem::path filesystemPath() const
void setPath(const std::filesystem::path &path)

Class QDropEvent:

Qt::MouseButtons buttons() const
Qt::KeyboardModifiers modifiers() const
QPointF position() const

Class QEvent:

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

Class QExplicitlySharedDataPointer:

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

Class QFile:

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

Class QFileInfo:

std::filesystem::path filesystemAbsoluteFilePath() const
std::filesystem::path filesystemAbsolutePath() const
std::filesystem::path filesystemCanonicalFilePath() const
std::filesystem::path filesystemCanonicalPath() const
std::filesystem::path filesystemFilePath() const
std::filesystem::path filesystemPath() const
std::filesystem::path filesystemSymLinkTarget() const
void setFile(const std::filesystem::path &file)
void stat()

Class QFuture:

bool isSuspended() const
bool isSuspending() const
bool isValid() const
QFuture<T> onCanceled(Function &&handler)
QFuture<T> onFailed(Function &&handler)
void setSuspended(bool suspend)
void suspend()
T takeResult()
QFuture<ResultType<Function>> then(Function &&function)
QFuture<ResultType<Function>> then(QtFuture::Launch policy, Function &&function)
QFuture<ResultType<Function>> then(QThreadPool *pool, Function &&function)
void toggleSuspended()

Class QFutureWatcher:

bool isSuspended() const
bool isSuspending() const
void setSuspended(bool suspend)
void suspend()
void suspended()
void suspending()
void toggleSuspended()

Class QGraphicsLayoutItem:

virtual bool isEmpty() const

Class QHash:

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

Class QHeaderView:

virtual void initStyleOptionForIndex(QStyleOptionHeader *option, int logicalIndex) const

Class QIODevice:

virtual qint64 skipData(qint64 maxSize)

Class QIcon:

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

Class QImage:

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

Class QImageIOHandler:

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

Class QImageReader:

int allocationLimit()
void setAllocationLimit(int mbLimit)

Class QInputEvent:

const QInputDevice *device() const

Class QJsonValue:

qint64 toInteger(qint64 defaultValue) const

Class QKeyEvent:

QKeyCombination keyCombination() const

Class QLabel:

QPicture picture() const

Class QLatin1StringView:

QLatin1StringView first(qsizetype n) const
QLatin1StringView last(qsizetype n) const
QLatin1StringView sliced(qsizetype pos) const
QLatin1StringView sliced(qsizetype pos, qsizetype n) const
QString toString() const
decltype(qTokenize(*this, std::forward<Needle>(needle), flags...)) tokenize(Needle &&sep, Flags... flags) const

Class QLibraryInfo:

QString path(QLibraryInfo::LibraryPath p)

Class QList:

void append(QList<T> &&value)
QList<T> first(qsizetype n) const
QList<T> last(qsizetype n) const
QList<T> operator+(QList<T> &&other) const
QList<T> &operator+=(QList<T> &&other)
QList<T> &operator<<(QList<T> &&other)
QList<T> sliced(qsizetype pos, qsizetype n) const
QList<T> sliced(qsizetype pos) const

Class QLocale:

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

Class QMap:

QMap::iterator erase(QMap::const_iterator first, QMap::const_iterator last)
std::map<Key, T> toStdMap() &&

Class QMargins:

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

Class QMarginsF:

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

Class QMetaMethod:

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

Class QMetaProperty:

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

Class QMetaSequence:

QMetaSequence fromContainer()

Class QMetaType:

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

Class QModbusReply:

QList<QModbusDevice::IntermediateError> intermediateErrors() const

Class QModelIndex:

void multiData(QModelRoleDataSpan roleDataSpan) const

Class QMultiHash:

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

Class QMultiMap:

QMultiMap::iterator erase(QMultiMap::const_iterator first, QMultiMap::const_iterator last)

Class QSGD3D11Texture:

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

Class QSGMetalTexture:

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

Class QSGOpenGLTexture:

QSGTexture *fromNative(GLuint textureId, QQuickWindow *window, const QSize &size, QQuickWindow::CreateTextureOptions options)

Class QSGVulkanTexture:

QSGTexture *fromNative(VkImage image, VkImageLayout layout, QQuickWindow *window, const QSize &size, QQuickWindow::CreateTextureOptions options)

Class QPagedPaintDevice:

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

Class QPersistentModelIndex:

void multiData(QModelRoleDataSpan roleDataSpan) const

Class QPointer:

T *get() const

Class QProcess:

std::function<void ()> childProcessModifier() const
void setChildProcessModifier(const std::function<void ()> &modifier)
void startCommand(const QString &command, QIODeviceBase::OpenMode mode)

Class QQmlApplicationEngine:

void setExtraFileSelectors(const QStringList &extraFileSelectors)

Class QQuickItem:

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

Class QQuickRenderControl:

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

Class QQuickWindow:

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

Class QRect:

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

Class QRegion:

QRegion fromHRGN(HRGN hrgn)
HRGN toHRGN() const

Class QRegularExpression:

QRegularExpression fromWildcard(QStringView pattern, Qt::CaseSensitivity cs, QRegularExpression::WildcardConversionOptions options)
QRegularExpressionMatchIterator globalMatch(QStringView subjectView, qsizetype offset, QRegularExpression::MatchType matchType, QRegularExpression::MatchOptions matchOptions) const
QRegularExpressionMatch match(QStringView subjectView, qsizetype offset, QRegularExpression::MatchType matchType, QRegularExpression::MatchOptions matchOptions) const

Class QSGRenderNode:

virtual void prepare()

Class QSharedDataPointer:

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

Class QShortcut:

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

Class QSortFilterProxyModel:

void autoAcceptChildRowsChanged(bool autoAcceptChildRows)
void invalidateColumnsFilter()
void invalidateRowsFilter()

Class QSqlDriver:

virtual int maximumIdentifierLength(QSqlDriver::IdentifierType type) const

Class QSqlQuery:

QVariantList boundValues() const

Class QSslConfiguration:

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

Class QSslSocket:


Class QStandardItem:

virtual void multiData(QModelRoleDataSpan roleDataSpan) const

Class QString:

QString &append(QStringView v)
qsizetype count(QStringView str, Qt::CaseSensitivity cs) const
QString first(qsizetype n) const
QString fromLatin1(QByteArrayView str)
QString fromLocal8Bit(QByteArrayView str)
QString fromUtf8(QByteArrayView str)
QString fromUtf8(const char8_t *str, qsizetype size)
QString &insert(qsizetype position, QStringView str)
QString last(qsizetype n) const
int localeAwareCompare(QStringView other) const
int localeAwareCompare(QStringView s1, QStringView s2)
QString &operator+=(QStringView str)
QString &prepend(QStringView str)
QString sliced(qsizetype pos, qsizetype n) const
QString sliced(qsizetype pos) const
decltype(qTokenize(*this, std::forward<Needle>(needle), flags...)) tokenize(Needle &&sep, Flags... flags) const &
decltype(qTokenize(std::move(*this), std::forward<Needle>(needle), flags...)) tokenize(Needle &&sep, Flags... flags) const &&
decltype(qTokenize(std::move(*this), std::forward<Needle>(needle), flags...)) tokenize(Needle &&sep, Flags... flags) &&

Class QStringListModel:

virtual bool clearItemData(const QModelIndex &index) override

Class QStringTokenizer:

decltype(QtPrivate::Tok::TokenizerResult<Haystack, Needle>({std::forward<Haystack>(h), std::forward<Needle>(n), flags...})) qTokenize(Haystack &&haystack, Needle &&needle, Flags... flags)

Class QStringView:

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

Class QSurfaceFormat:

void setColorSpace(const QColorSpace &colorSpace)

Class QTextCharFormat:

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

Class QTextDocument:

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

Class QThreadPool:

bool contains(const QThread *thread) const

Class QTime:

QTime fromString(QStringView string, Qt::DateFormat format)
QTime fromString(QStringView string, QStringView format)
QTime fromString(const QString &string, QStringView format)

Class QTypeRevision:

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

Class QUnhandledException:

std::exception_ptr exception() const
void swap(QUnhandledException &other)

Class QVarLengthArray:

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

Class QVariant:

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

Class QWidget:

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

Class QWindow:

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

New Functions in Namespaces

void resetOpenGLState()
QTaskBuilder<Task> task(Task &&task)

New Global Functions

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

New Macros

QT_IMPLICIT_QCHAR_CONSTRUCTION
QT_IMPLICIT_QFILEINFO_CONSTRUCTION
Q_MOC_INCLUDE
Q_OBJECT_BINDABLE_PROPERTY(containingClass, type, name, signal)
Q_OBJECT_BINDABLE_PROPERTY_WITH_ARGS(containingClass, type, name, initialvalue, signal)
Q_OBJECT_COMPUTED_PROPERTY(containingClass, type, name, callback)

New Enum Types

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

New Type Aliases

New Properties

New Variables

New QML Types

New QML Properties

QML Type FontLoader:

font : font

QML Type GeometryRenderer:

sortIndex : float

QML Type Item:

palette : Palette

QML Type SceneEnvironment:

tonemapMode : enumeration

QML Type WaylandCompositor:

additionalShmFormats : list<enum>

QML Type Window:

palette : Palette

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