New Classes and Functions in Qt 6.4

This page contains a comprehensive list of all new classes and functions introduced in Qt 6.4.

New Classes
New Member Functions
New Functions in Namespaces
New Macros
New Enum Types
New Properties
New Variables
New QML Types
New QML Properties
New QML Methods

New Classes

A: QAbstractHttpServer

H: QHttpServer; QHttpServerRequest; QHttpServerResponder; QHttpServerResponse; QHttpServerRouter; QHttpServerRouterRule

P: QPdfLink; QPdfPageNavigator

S: QSslServer

W: QWebEngineFileSystemAccessRequest; QWebSocketHandshakeOptions

New Member Functions

Class QAbstractItemModelTester:

void	setUseFetchMore(bool value)

Class QByteArray:

QByteArray	percentDecoded(char percent) const
void	resize(qsizetype newSize, char c)

Class QColor:

QColor	fromString(QAnyStringView name)
bool	isValidColorName(QAnyStringView name)

Class QColorTransform:

bool	isIdentity() const
QRgbaFloat16	map(QRgbaFloat16 rgbafp16) const
QRgbaFloat32	map(QRgbaFloat32 rgbafp32) const
bool	operator!=(const QColorTransform &ct1, const QColorTransform &ct2)
bool	operator==(const QColorTransform &ct1, const QColorTransform &ct2)

Class QDate:

QDate	addDuration(std::chrono::days ndays) const
QDate	fromStdSysDays(const std::chrono::sys_days &days)

Class QDateTime:

QDateTime	addDuration(std::chrono::milliseconds msecs) const
QDateTime	fromStdLocalTime(const std::chrono::local_time<std::chrono::milliseconds> &time)
QDateTime	fromStdTimePoint(const std::chrono::time_point<Clock, Duration> &time)
QDateTime	fromStdTimePoint(const std::chrono::local_time<std::chrono::milliseconds> &time)
QDateTime	fromStdZonedTime(const int &time)
QDateTime	operator+(const QDateTime &dateTime, std::chrono::milliseconds duration)
QDateTime	operator+(std::chrono::milliseconds duration, const QDateTime &dateTime)
QDateTime &	operator+=(std::chrono::milliseconds duration)
std::chrono::milliseconds	operator-(const QDateTime &lhs, const QDateTime &rhs)
QDateTime	operator-(const QDateTime &dateTime, std::chrono::milliseconds duration)
QDateTime &	operator-=(std::chrono::milliseconds duration)
std::chrono::sys_time<std::chrono::milliseconds>	toStdSysMilliseconds() const
std::chrono::sys_seconds	toStdSysSeconds() const

Class QFileInfo:

bool	isAlias() const

Class QFormLayout:

bool	isRowVisible(int row) const
bool	isRowVisible(QWidget *widget) const
bool	isRowVisible(QLayout *layout) const
void	setRowVisible(int row, bool on)
void	setRowVisible(QWidget *widget, bool on)
void	setRowVisible(QLayout *layout, bool on)

Class QFuture:

QFuture<U> unwrap()

Class QHash:

auto	asKeyValueRange() &
auto	asKeyValueRange() const &
auto	asKeyValueRange() &&
auto	asKeyValueRange() const &&

Class QImage:

QImage	colorTransformed(const QColorTransform &transform) const &
QImage	colorTransformed(const QColorTransform &transform) &&

Class QJniEnvironment:

jfieldID	findField(jclass clazz, const char *fieldName)
jmethodID	findMethod(jclass clazz, const char *methodName)
jfieldID	findStaticField(jclass clazz, const char *fieldName)
jmethodID	findStaticMethod(jclass clazz, const char *methodName)

Class QJniObject:

auto	callMethod(const char *methodName, const char *signature, Args &&... args) const
auto	callMethod(const char *methodName, Args &&... args) const
QJniObject	callObjectMethod(const char *methodName, Args &&... args) const
auto	callStaticMethod(const char *className, const char *methodName, const char *signature, Args &&... args)
auto	callStaticMethod(jclass clazz, jmethodID methodId, Args &&... args)
auto	callStaticMethod(const char *className, const char *methodName, Args &&... args)
auto	callStaticMethod(jclass clazz, const char *methodName, Args &&... args)
QJniObject	callStaticObjectMethod(const char *className, const char *methodName, Args &&... args)
QJniObject	callStaticObjectMethod(jclass clazz, const char *methodName, Args &&... args)
QJniObject	construct(Args &&... args)

Class QLatin1Char:

QLatin1Char operator""_L1(char ch)

Class QLatin1StringView:

const char *	constBegin() const
const char *	constData() const
const char *	constEnd() const
qsizetype	count(QStringView str, Qt::CaseSensitivity cs) const
qsizetype	count(QLatin1StringView l1, Qt::CaseSensitivity cs) const
qsizetype	count(QChar ch, Qt::CaseSensitivity cs) const
bool	empty() const
QLatin1Char	first() const
QLatin1Char	last() const
qsizetype	length() const
QLatin1StringView	operator""_L1(const char *str, size_t size)
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
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

Class QLine:

QLineF toLineF() const

Class QListWidgetItem:

void	setTextAlignment(Qt::Alignment alignment)

Class QMap:

auto	asKeyValueRange() &
auto	asKeyValueRange() const &
auto	asKeyValueRange() &&
auto	asKeyValueRange() const &&

Class QMargins:

QMarginsF toMarginsF() const

Class QMetaType:

size_t qHash(QMetaType type, size_t seed)

Class QMqttSubscriptionProperties:

bool	noLocal() const
void	setNoLocal(bool noloc)

Class QMultiHash:

auto	asKeyValueRange() &
auto	asKeyValueRange() const &
auto	asKeyValueRange() &&
auto	asKeyValueRange() const &&

Class QMultiMap:

auto	asKeyValueRange() &
auto	asKeyValueRange() const &
auto	asKeyValueRange() &&
auto	asKeyValueRange() const &&

Class QMutexLocker:

bool	isLocked() const
QMutexLocker<Mutex> &	operator=(QMutexLocker<Mutex> &&other)
void	swap(QMutexLocker<Mutex> &other)

Class QNetworkInformation:

bool	loadBackendByFeatures(QNetworkInformation::Features features)
bool	loadBackendByName(QStringView backend)

Class QObject:

bool	isQuickItemType() const
void	setObjectName(QAnyStringView name)

Class QPoint:

QPointF toPointF() const

Class QPolygon:

QPolygonF toPolygonF() const

Class QQmlApplicationEngine:

void	objectCreationFailed(const QUrl &url)

Class QQuickRenderTarget:

QQuickRenderTarget	fromD3D11Texture(void *texture, uint format, const QSize &pixelSize, int sampleCount)
QQuickRenderTarget	fromMetalTexture(MTLTexture *texture, uint format, const QSize &pixelSize, int sampleCount)
QQuickRenderTarget	fromOpenGLTexture(uint textureId, uint format, const QSize &pixelSize, int sampleCount)
QQuickRenderTarget	fromPaintDevice(QPaintDevice *device)
QQuickRenderTarget	fromVulkanImage(VkImage image, VkImageLayout layout, VkFormat format, const QSize &pixelSize, int sampleCount)
bool	mirrorVertically() const
void	setMirrorVertically(bool enable)

Class QRect:

QRectF toRectF() const

Class QSGMaterialShader:

int	combinedImageSamplerCount(int binding) const

Class QSize:

QSizeF toSizeF() const

Class QStringView:

qsizetype	count(QLatin1StringView l1, Qt::CaseSensitivity cs) const
int	localeAwareCompare(QStringView other) const

Class QTableWidgetItem:

void	setTextAlignment(Qt::Alignment alignment)

Class QTcpServer:

void	pendingConnectionAvailable()

Class QTemporaryDir:

QTemporaryDir &	operator=(QTemporaryDir &&other)
void	swap(QTemporaryDir &other)

Class QTextCursor:

void	insertMarkdown(const QString &markdown, QTextDocument::MarkdownFeatures features)

Class QTextDocumentFragment:

QTextDocumentFragment	fromMarkdown(const QString &markdown, QTextDocument::MarkdownFeatures features)
QString	toMarkdown(QTextDocument::MarkdownFeatures features) const
QString	toRawText() const

Class QTextStream:

QTextStream & operator>>(char16_t &c)

Class QTextToSpeech:

bool	setEngine(const QString &engine, const QVariantMap &params)

Class QTimeZone:

QTimeZone fromStdTimeZonePtr(const int *timeZone)

Class QTreeWidgetItem:

void	setTextAlignment(int column, Qt::Alignment alignment)

Class QVarLengthArray:

void	resize(qsizetype size, const T &v)

Class QVersionNumber:

QVersionNumber fromString(QAnyStringView string, qsizetype *suffixIndex)

Class QVoice:

QDataStream &	operator<<(QDataStream &stream, const QVoice &voice)
QDebug	operator<<(QDebug debug, const QVoice &voice)
QDataStream &	operator>>(QDataStream &stream, QVoice &voice)
void	swap(QVoice &other)

Class QVulkanWindow:

void	setEnabledFeaturesModifier(const QVulkanWindow::EnabledFeaturesModifier &modifier)

Class QWebEnginePage:

void	fileSystemAccessRequested(QWebEngineFileSystemAccessRequest request)

Class QWebSocket:

QWebSocketHandshakeOptions	handshakeOptions() const
void	open(const QUrl &url, const QWebSocketHandshakeOptions &options)
void	open(const QNetworkRequest &request, const QWebSocketHandshakeOptions &options)
QString	subprotocol() const

Class QWebSocketServer:

void	setSupportedSubprotocols(const QStringList &protocols)
QStringList	supportedSubprotocols() const

New Functions in Namespaces

QByteArray	operator""_ba(const char *str, size_t size)
QString	operator""_s(const char16_t *str, size_t size)
bool	qIsPolishScheduled(const QQuickWindow *window)
bool	qWaitForPolish(const QQuickWindow *window, int timeout)
bool	qWaitForPolish(const QQuickItem *item, int timeout)

New Macros

	QCOMPARE_EQ(left, right)
	QCOMPARE_GE(left, right)
	QCOMPARE_GT(left, right)
	QCOMPARE_LE(left, right)
	QCOMPARE_LT(left, right)
	QCOMPARE_NE(left, right)
	QTRY_COMPARE_EQ(left, right)
	QTRY_COMPARE_EQ_WITH_TIMEOUT(left, right, timeout)
	QTRY_COMPARE_GE(left, right)
	QTRY_COMPARE_GE_WITH_TIMEOUT(left, right, timeout)
	QTRY_COMPARE_GT(left, right)
	QTRY_COMPARE_GT_WITH_TIMEOUT(left, right, timeout)
	QTRY_COMPARE_LE(left, right)
	QTRY_COMPARE_LE_WITH_TIMEOUT(left, right, timeout)
	QTRY_COMPARE_LT(left, right)
	QTRY_COMPARE_LT_WITH_TIMEOUT(left, right, timeout)
	QTRY_COMPARE_NE(left, right)
	QTRY_COMPARE_NE_WITH_TIMEOUT(left, right, timeout)
	Q_CONSTINIT

New Enum Types

enum	PolygonMode { Fill, Line }

New Properties

clearButtonEnabled : const
layoutEnabled : const
engine : const

locale : const
isOpaque : const

New Variables

	polygonMode
	MacOSVentura
	Windows11_21H2
	Windows11_22H2

New QML Types

New QML Properties

QML Type Model:

castsReflections : bool

QML Type ReflectionProbe:

debugView : bool

QML Type SceneEnvironment:

	skyBoxCubeMap : QtQuick3D::CubeMapTexture
	skyboxBlurAmount : float
	specularAAEnabled : bool

QML Type SpriteParticle3D:

castsReflections : bool

QML Type TableView:

	animate : bool
	keyNavigationEnabled : bool
	pointerNavigationEnabled : bool
	selectionBehavior : enumeration

QML Type View3D:

renderFormat : enumeration

QML Type WaylandSurface:

isOpaque : bool

QML Type WebSocket:

	negotiatedSubprotocol : QString
	requestedSubprotocols : QStringList

QML Type WebSocketServer:

supportedSubprotocols : QStringList

New QML Methods

QML Type TableView:

point	cellAtIndex(QModelIndex modelIndex)
int	columnAtIndex(QModelIndex modelIndex)
QModelIndex	modelIndex(point cell)
int	rowAtIndex(QModelIndex modelIndex)

QML Type TreeView:

	collapseRecursively(row)
	expandRecursively(row, depth)
	expandToIndex(QModelIndex index)

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