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 Enum Values
- New Properties
- New Variables
- New QML Types
- New QML Properties
- New QML Methods
New Classes
New Member Functions
Class QAbstractItemModelTester:
| (since 6.4)void | setUseFetchMore(bool value) | 
Class QByteArray:
| (since 6.4)QByteArray | percentDecoded(char percent) const | 
| (since 6.4)void | resize(qsizetype newSize, char c) | 
Class QColor:
| (since 6.4)QColor | fromString(QAnyStringView name) | 
| (since 6.4)bool | isValidColorName(QAnyStringView name) | 
Class QColorTransform:
| (since 6.4)bool | isIdentity() const | 
| (since 6.4)QRgbaFloat16 | map(QRgbaFloat16 rgbafp16) const | 
| (since 6.4)QRgbaFloat32 | map(QRgbaFloat32 rgbafp32) const | 
| (since 6.4)bool | operator!=(const QColorTransform &ct1, const QColorTransform &ct2) | 
| (since 6.4)bool | operator==(const QColorTransform &ct1, const QColorTransform &ct2) | 
Class QDate:
| (since 6.4)QDate | addDuration(std::chrono::days ndays) const | 
| (since 6.4)QDate | fromStdSysDays(const std::chrono::sys_days &days) | 
Class QDateTime:
| (since 6.4)QDateTime | addDuration(std::chrono::milliseconds msecs) const | 
| (since 6.4)QDateTime | fromStdLocalTime(const std::chrono::local_time<std::chrono::milliseconds> &time) | 
| (since 6.4)QDateTime | fromStdTimePoint(const std::chrono::local_time<std::chrono::milliseconds> &time) | 
| (since 6.4)QDateTime | fromStdTimePoint(const std::chrono::time_point<Clock, Duration> &time) | 
| (since 6.4)QDateTime | fromStdTimePoint(std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds> time) | 
| (since 6.4)QDateTime | fromStdZonedTime(const std::chrono::zoned_time<std::chrono::milliseconds, const std::chrono::time_zone *> &time) | 
| (since 6.4)QDateTime | operator+(const QDateTime &dateTime, std::chrono::milliseconds duration) | 
| (since 6.4)QDateTime | operator+(std::chrono::milliseconds duration, const QDateTime &dateTime) | 
| (since 6.4)QDateTime & | operator+=(std::chrono::milliseconds duration) | 
| (since 6.4)std::chrono::milliseconds | operator-(const QDateTime &lhs, const QDateTime &rhs) | 
| (since 6.4)QDateTime | operator-(const QDateTime &dateTime, std::chrono::milliseconds duration) | 
| (since 6.4)QDateTime & | operator-=(std::chrono::milliseconds duration) | 
| (since 6.4)std::chrono::sys_time<std::chrono::milliseconds> | toStdSysMilliseconds() const | 
| (since 6.4)std::chrono::sys_seconds | toStdSysSeconds() const | 
Class QFileInfo:
| (since 6.4)bool | isAlias() const | 
Class QFormLayout:
| (since 6.4)bool | isRowVisible(int row) const | 
| (since 6.4)bool | isRowVisible(QLayout *layout) const | 
| (since 6.4)bool | isRowVisible(QWidget *widget) const | 
| (since 6.4)void | setRowVisible(int row, bool on) | 
| (since 6.4)void | setRowVisible(QLayout *layout, bool on) | 
| (since 6.4)void | setRowVisible(QWidget *widget, bool on) | 
Class QFuture:
| (since 6.4)QFuture<U> | unwrap() | 
Class QHash:
| (since 6.4)auto | asKeyValueRange() && | 
| (since 6.4)auto | asKeyValueRange() & | 
| (since 6.4)auto | asKeyValueRange() const && | 
| (since 6.4)auto | asKeyValueRange() const & | 
Class QImage:
| (since 6.4)QImage | colorTransformed(const QColorTransform &transform) const & | 
| (since 6.4)QImage | colorTransformed(const QColorTransform &transform) && | 
Class QJniEnvironment:
| (since 6.4)jfieldID | findField(jclass clazz, const char *fieldName) | 
| (since 6.4)jmethodID | findMethod(jclass clazz, const char *methodName) | 
| (since 6.4)jfieldID | findStaticField(jclass clazz, const char *fieldName) | 
| (since 6.4)jmethodID | findStaticMethod(jclass clazz, const char *methodName) | 
Class QJniObject:
| (since 6.4)auto | callMethod(const char *methodName, Args &&... args) const | 
| (since 6.4)auto | callMethod(const char *methodName, const char *signature, Args &&... args) const | 
| (since 6.4)QJniObject | callObjectMethod(const char *methodName, Args &&... args) const | 
| (since 6.4)auto | callStaticMethod(const char *className, const char *methodName, Args &&... args) | 
| (since 6.4)auto | callStaticMethod(jclass clazz, const char *methodName, Args &&... args) | 
| (since 6.4)auto | callStaticMethod(jclass clazz, jmethodID methodId, Args &&... args) | 
| (since 6.4)auto | callStaticMethod(const char *className, const char *methodName, const char *signature, Args &&... args) | 
| (since 6.4)QJniObject | callStaticObjectMethod(const char *className, const char *methodName, Args &&... args) | 
| (since 6.4)QJniObject | callStaticObjectMethod(jclass clazz, const char *methodName, Args &&... args) | 
| (since 6.4)QJniObject | construct(Args &&... args) | 
Class QLatin1StringView:
| (since 6.4)const char * | constBegin() const | 
| (since 6.4)const char * | constData() const | 
| (since 6.4)const char * | constEnd() const | 
| (since 6.4)qsizetype | count(QChar ch, Qt::CaseSensitivity cs) const | 
| (since 6.4)qsizetype | count(QLatin1StringView l1, Qt::CaseSensitivity cs) const | 
| (since 6.4)qsizetype | count(QStringView str, Qt::CaseSensitivity cs) const | 
| (since 6.4)bool | empty() const | 
| (since 6.4)QLatin1Char | first() const | 
| (since 6.4)QLatin1Char | last() const | 
| (since 6.4)qsizetype | length() const | 
| (since 6.4)double | toDouble(bool *ok) const | 
| (since 6.4)float | toFloat(bool *ok) const | 
| (since 6.4)int | toInt(bool *ok, int base) const | 
| (since 6.4)long | toLong(bool *ok, int base) const | 
| (since 6.4)qlonglong | toLongLong(bool *ok, int base) const | 
| (since 6.4)short | toShort(bool *ok, int base) const | 
| (since 6.4)uint | toUInt(bool *ok, int base) const | 
| (since 6.4)ulong | toULong(bool *ok, int base) const | 
| (since 6.4)qulonglong | toULongLong(bool *ok, int base) const | 
| (since 6.4)ushort | toUShort(bool *ok, int base) const | 
Class QLine:
| (since 6.4)QLineF | toLineF() const | 
Class QListWidgetItem:
| (since 6.4)void | setTextAlignment(Qt::Alignment alignment) | 
Class QMap:
| (since 6.4)auto | asKeyValueRange() && | 
| (since 6.4)auto | asKeyValueRange() & | 
| (since 6.4)auto | asKeyValueRange() const && | 
| (since 6.4)auto | asKeyValueRange() const & | 
Class QMargins:
| (since 6.4)QMarginsF | toMarginsF() const | 
Class QMetaType:
| (since 6.4)size_t | qHash(QMetaType key, size_t seed) | 
Class QMqttSubscriptionProperties:
| (since 6.4)bool | noLocal() const | 
| (since 6.4)void | setNoLocal(bool noloc) | 
Class QMultiHash:
| (since 6.4)auto | asKeyValueRange() && | 
| (since 6.4)auto | asKeyValueRange() & | 
| (since 6.4)auto | asKeyValueRange() const && | 
| (since 6.4)auto | asKeyValueRange() const & | 
Class QMultiMap:
| (since 6.4)auto | asKeyValueRange() && | 
| (since 6.4)auto | asKeyValueRange() & | 
| (since 6.4)auto | asKeyValueRange() const && | 
| (since 6.4)auto | asKeyValueRange() const & | 
Class QMutexLocker:
| (since 6.4)bool | isLocked() const | 
| (since 6.4)QMutexLocker<Mutex> & | operator=(QMutexLocker<Mutex> &&other) | 
| (since 6.4)void | swap(QMutexLocker<Mutex> &other) | 
Class QNetworkInformation:
| (since 6.4)bool | loadBackendByFeatures(QNetworkInformation::Features features) | 
| (since 6.4)bool | loadBackendByName(QStringView backend) | 
Class QObject:
| (since 6.4)bool | isQuickItemType() const | 
| (since 6.4)void | setObjectName(QAnyStringView name) | 
Class QPoint:
| (since 6.4)QPointF | toPointF() const | 
Class QPolygon:
| (since 6.4)QPolygonF | toPolygonF() const | 
Class QQmlApplicationEngine:
| (since 6.4)void | objectCreationFailed(const QUrl &url) | 
Class QQuickRenderTarget:
| (since 6.4)QQuickRenderTarget | fromD3D11Texture(void *texture, uint format, const QSize &pixelSize, int sampleCount) | 
| (since 6.4)QQuickRenderTarget | fromMetalTexture(MTLTexture *texture, uint format, const QSize &pixelSize, int sampleCount) | 
| (since 6.4)QQuickRenderTarget | fromOpenGLTexture(uint textureId, uint format, const QSize &pixelSize, int sampleCount) | 
| (since 6.4)QQuickRenderTarget | fromPaintDevice(QPaintDevice *device) | 
| (since 6.4)QQuickRenderTarget | fromVulkanImage(VkImage image, VkImageLayout layout, VkFormat format, const QSize &pixelSize, int sampleCount) | 
| (since 6.4)bool | mirrorVertically() const | 
| (since 6.4)void | setMirrorVertically(bool enable) | 
Class QRect:
| (since 6.4)QRectF | toRectF() const | 
Class QSGMaterialShader:
| (since 6.4)int | combinedImageSamplerCount(int binding) const | 
Class QSize:
| (since 6.4)QSizeF | toSizeF() const | 
Class QStringView:
| (since 6.4)qsizetype | count(QLatin1StringView l1, Qt::CaseSensitivity cs) const | 
| (since 6.4)int | localeAwareCompare(QStringView other) const | 
Class QTableWidgetItem:
| (since 6.4)void | setTextAlignment(Qt::Alignment alignment) | 
Class QTcpServer:
| (since 6.4)void | pendingConnectionAvailable() | 
Class QTemporaryDir:
| (since 6.4)QTemporaryDir & | operator=(QTemporaryDir &&other) | 
| (since 6.4)void | swap(QTemporaryDir &other) | 
Class QTextCursor:
| (since 6.4)void | insertMarkdown(const QString &markdown, QTextDocument::MarkdownFeatures features) | 
Class QTextDocumentFragment:
| (since 6.4)QTextDocumentFragment | fromMarkdown(const QString &markdown, QTextDocument::MarkdownFeatures features) | 
| (since 6.4)QString | toMarkdown(QTextDocument::MarkdownFeatures features) const | 
| (since 6.4)QString | toRawText() const | 
Class QTextStream:
| (since 6.4)QTextStream & | operator>>(char16_t &c) | 
Class QTextToSpeech:
| (since 6.4)bool | setEngine(const QString &engine, const QVariantMap ¶ms) | 
Class QTimeZone:
| (since 6.4)QTimeZone | fromStdTimeZonePtr(const std::chrono::time_zone *timeZone) | 
Class QTreeWidgetItem:
| (since 6.4)void | setTextAlignment(int column, Qt::Alignment alignment) | 
Class QVarLengthArray:
| (since 6.4)void | resize(qsizetype size, const T &v) | 
Class QVersionNumber:
| (since 6.4)QVersionNumber | fromString(QAnyStringView string, qsizetype *suffixIndex) | 
Class QVoice:
| (since 6.4)QDataStream & | operator<<(QDataStream &stream, const QVoice &voice) | 
| (since 6.4)QDebug | operator<<(QDebug debug, const QVoice &voice) | 
| (since 6.4)QDataStream & | operator>>(QDataStream &stream, QVoice &voice) | 
| (since 6.4)void | swap(QVoice &other) | 
Class QWebEnginePage:
| (since 6.4)void | fileSystemAccessRequested(QWebEngineFileSystemAccessRequest request) | 
Class QWebSocket:
| (since 6.4)QWebSocketHandshakeOptions | handshakeOptions() const | 
| (since 6.4)void | open(const QNetworkRequest &request, const QWebSocketHandshakeOptions &options) | 
| (since 6.4)void | open(const QUrl &url, const QWebSocketHandshakeOptions &options) | 
| (since 6.4)QString | subprotocol() const | 
Class QWebSocketServer:
| (since 6.4)void | setSupportedSubprotocols(const QStringList &protocols) | 
| (since 6.4)QStringList | supportedSubprotocols() const | 
New Functions in Namespaces
| (since 6.4)QLatin1StringView | operator""_L1(const char *str, size_t size) | 
| (since 6.4)QLatin1Char | operator""_L1(char ch) | 
| (since 6.4)QByteArray | operator""_ba(const char *str, size_t size) | 
| (since 6.4)QString | operator""_s(const char16_t *str, size_t size) | 
| (since 6.4)bool | qIsPolishScheduled(const QQuickWindow *window) | 
| (since 6.4)bool | qWaitForPolish(const QQuickWindow *window, int timeout) | 
| (since 6.4)bool | qWaitForPolish(const QQuickItem *item, int timeout) | 
New Macros
| (since 6.4) | QCOMPARE_EQ(computed, baseline) | 
| (since 6.4) | QCOMPARE_GE(computed, baseline) | 
| (since 6.4) | QCOMPARE_GT(computed, baseline) | 
| (since 6.4) | QCOMPARE_LE(computed, baseline) | 
| (since 6.4) | QCOMPARE_LT(computed, baseline) | 
| (since 6.4) | QCOMPARE_NE(computed, baseline) | 
| (since 6.4) | QTRY_COMPARE_EQ(computed, baseline) | 
| (since 6.4) | QTRY_COMPARE_EQ_WITH_TIMEOUT(computed, baseline, timeout) | 
| (since 6.4) | QTRY_COMPARE_GE(computed, baseline) | 
| (since 6.4) | QTRY_COMPARE_GE_WITH_TIMEOUT(computed, baseline, timeout) | 
| (since 6.4) | QTRY_COMPARE_GT(computed, baseline) | 
| (since 6.4) | QTRY_COMPARE_GT_WITH_TIMEOUT(computed, baseline, timeout) | 
| (since 6.4) | QTRY_COMPARE_LE(computed, baseline) | 
| (since 6.4) | QTRY_COMPARE_LE_WITH_TIMEOUT(computed, baseline, timeout) | 
| (since 6.4) | QTRY_COMPARE_LT(computed, baseline) | 
| (since 6.4) | QTRY_COMPARE_LT_WITH_TIMEOUT(computed, baseline, timeout) | 
| (since 6.4) | QTRY_COMPARE_NE(computed, baseline) | 
| (since 6.4) | QTRY_COMPARE_NE_WITH_TIMEOUT(computed, baseline, timeout) | 
| (since 6.4) | Q_CONSTINIT | 
New Enum Types
| (since 6.4)enum | PolygonMode { Fill, Line } | 
New Enum Values
| enum value | Error::InvalidResponseError | 
| enum value | Error::MissingPermissionsError | 
| enum value | Error::MissingPermissionsError | 
| enum value | Error::MissingPermissionsError | 
| enum value | Error::MissingPermissionsError | 
| enum value | Error::MissingPermissionsError | 
| enum value | Resource::RedirectPaintDevice | 
| enum value | SocketError::MissingPermissionsError | 
New Properties
| 
 | 
New Variables
| (since 6.4) | polygonMode | 
| (since 6.4) | MacOSVentura | 
| (since 6.4) | Windows11_21H2 | 
| (since 6.4) | Windows11_22H2 | 
New QML Types
New QML Properties
QML Type Model:
| (since 6.4) | castsReflections : bool | 
QML Type ReflectionProbe:
| (since 6.4) | debugView : bool | 
QML Type SceneEnvironment:
| (since 6.4) | skyBoxCubeMap : QtQuick3D::CubeMapTexture | 
| (since 6.4) | skyboxBlurAmount : real | 
| (since 6.4) | specularAAEnabled : bool | 
QML Type SpriteParticle3D:
| (since 6.4) | castsReflections : bool | 
QML Type TableView:
| (since 6.4) | animate : bool | 
| (since 6.4) | keyNavigationEnabled : bool | 
| (since 6.4) | pointerNavigationEnabled : bool | 
| (since 6.4) | selectionBehavior : enumeration | 
QML Type View3D:
| (since 6.4) | renderFormat : enumeration | 
QML Type WaylandSurface:
| (since 6.4) | isOpaque : bool | 
QML Type WebSocket:
| (since 6.4) | negotiatedSubprotocol : string | 
| (since 6.4) | requestedSubprotocols : list<string> | 
QML Type WebSocketServer:
| (since 6.4) | supportedSubprotocols : list<string> | 
New QML Methods
QML Type TableView:
| (since 6.4)point | cellAtIndex(QModelIndex modelIndex) | 
| (since 6.4)int | columnAtIndex(QModelIndex modelIndex) | 
| (since 6.4)QModelIndex | modelIndex(point cell) | 
| (since 6.4)int | rowAtIndex(QModelIndex modelIndex) | 
QML Type TreeView:
| (since 6.4) | collapseRecursively(row) | 
| (since 6.4) | expandRecursively(row, depth) | 
| (since 6.4) | expandToIndex(QModelIndex index) |