Qt 5.15
New Classes and Functions in Qt 5.7
Qt 5.15.8 Reference Documentation

New Classes and Functions in Qt 5.7

This page contains a comprehensive list of all new classes and functions introduced in Qt 5.7. Links to new APIs in previous Qt 5 releases are found at the bottom of this page.

New Classes
New Member Functions
New Global Functions
New Macros
New Enum Types
New Type Aliases
New Properties
New QML Types
New QML Properties
New QML Methods

New Classes

A: AddressInfo (QLowEnergyAdvertisingParameters); QAbstractActionInput (Qt3DInput); QAbstractFunctor (Qt3DRender); QAction (Qt3DInput); QActionInput (Qt3DInput); QAlphaCoverage (Qt3DRender); QAlphaTest (Qt3DRender); QAnalogAxisInput (Qt3DInput); QAxis (Qt3DInput)

B: QBlendEquation (Qt3DRender); QButtonAxisInput (Qt3DInput)

C: QClearBuffers (Qt3DRender); QColorMask (Qt3DRender); QComputeCommand (Qt3DRender); QConeGeometry (Qt3DExtras); QCuboidGeometry (Qt3DExtras); QCullFace (Qt3DRender); QCylinderGeometry (Qt3DExtras)

D: QDepthTest (Qt3DRender); QDiffuseMapMaterial (Qt3DExtras); QDiffuseSpecularMapMaterial (Qt3DExtras); QDirectionalLight (Qt3DRender); QDispatchCompute (Qt3DRender); QDithering (Qt3DRender)

E: QEffect (Qt3DRender)

F: QFirstPersonCameraController (Qt3DExtras); QForwardRenderer (Qt3DExtras); QFrontFace (Qt3DRender); QFrustumCulling (Qt3DRender)

G: QGeometry (Qt3DRender); QGeometryRenderer (Qt3DRender); QGoochMaterial (Qt3DExtras)

I: QInputChord (Qt3DInput); QInputSequence (Qt3DInput); QInputSettings (Qt3DInput)

L: QLogicAspect (Qt3DLogic); QLowEnergyAdvertisingData; QLowEnergyAdvertisingParameters; QLowEnergyCharacteristicData; QLowEnergyConnectionParameters; QLowEnergyDescriptorData; QLowEnergyServiceData

M: QMorphPhongMaterial (Qt3DExtras); QMultiSampleAntiAliasing (Qt3DRender)

N: QNodeCreatedChange (Qt3DCore); QNodeDestroyedChange (Qt3DCore); QNoDepthMask (Qt3DRender); QNormalDiffuseMapAlphaMaterial (Qt3DExtras); QNormalDiffuseMapMaterial (Qt3DExtras); QNormalDiffuseSpecularMapMaterial (Qt3DExtras)

O: QOrbitCameraController (Qt3DExtras)

P: QPerVertexColorMaterial (Qt3DExtras); QPhongAlphaMaterial (Qt3DExtras); QPhongMaterial (Qt3DExtras); QPickEvent (Qt3DRender); QPickingSettings (Qt3DRender); QPickTriangleEvent (Qt3DRender); QPlaneGeometry (Qt3DExtras); QPointSize (Qt3DRender); QPolygonOffset (Qt3DRender)

Q: QQuickStyle

R: QRenderAspect (Qt3DRender); QRenderPass (Qt3DRender); QRenderPassFilter (Qt3DRender); QRenderSettings (Qt3DRender); QRenderState (Qt3DRender); QRenderSurfaceSelector (Qt3DRender); QRenderTarget (Qt3DRender); QRenderTargetOutput (Qt3DRender); QRenderTargetSelector (Qt3DRender)

T: QTechnique (Qt3DRender); QTechniqueFilter (Qt3DRender); QTextureData (Qt3DRender); QTextureImageDataGenerator (Qt3DRender); QTorusGeometry (Qt3DExtras)

V: QViewport (Qt3DRender)

W: QWebEngineContextMenuData

New Member Functions

Class QBluetoothUuid:

bool	operator!=(const QBluetoothUuid &other) const

Class QLowEnergyController:

QLowEnergyService *	addService(const QLowEnergyServiceData &service, QObject *parent)
void	connectionUpdated(const QLowEnergyConnectionParameters &newParameters)
QLowEnergyController *	createCentral(const QBluetoothDeviceInfo &remoteDevice, QObject *parent)
QLowEnergyController *	createPeripheral(QObject *parent)
void	requestConnectionUpdate(const QLowEnergyConnectionParameters &parameters)
QLowEnergyController::Role	role() const
void	startAdvertising(const QLowEnergyAdvertisingParameters &parameters, const QLowEnergyAdvertisingData &advertisingData, const QLowEnergyAdvertisingData &scanResponseData)
void	stopAdvertising()

Class QBasicMutex:

bool	isRecursive() const

Class QBitArray:

QDebug	operator<<(QDebug debug, const std::vector<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::list<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::map<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::multimap<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const QSharedPointer<T> &ptr)

Class QByteArray:

QByteArray &	append(int count, char ch)
QByteArray &	insert(int i, int count, char ch)
QDebug	operator<<(QDebug debug, const std::vector<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::list<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::map<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::multimap<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const QSharedPointer<T> &ptr)
QByteArray &	prepend(int count, char ch)

Class FromBase64Result:

uint	qHash(const std::pair<T1, T2> &key, uint seed)

Class QChar:

QDebug	operator<<(QDebug debug, const std::vector<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::list<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::map<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::multimap<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const QSharedPointer<T> &ptr)

Class QDataStream:

void	abortTransaction()
bool	commitTransaction()
void	rollbackTransaction()
void	startTransaction()

Class QDate:

QDebug	operator<<(QDebug debug, const std::vector<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::list<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::map<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::multimap<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const QSharedPointer<T> &ptr)

Class QDateTime:

QDebug	operator<<(QDebug debug, const std::vector<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::list<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::map<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::multimap<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const QSharedPointer<T> &ptr)

Class QFlags:

QFlags<T> & setFlag(Enum flag, bool on)

Class QHash:

QPair<QHash::iterator, QHash::iterator>	equal_range(const Key &key)
QPair<QHash::const_iterator, QHash::const_iterator>	equal_range(const Key &key) const
QHash::iterator	erase(QHash::const_iterator pos)

Class QIODevice:

void	channelBytesWritten(int channel, qint64 bytes)
void	channelReadyRead(int channel)
void	commitTransaction()
int	currentReadChannel() const
int	currentWriteChannel() const
bool	isTransactionStarted() const
int	readChannelCount() const
void	rollbackTransaction()
void	setCurrentReadChannel(int channel)
void	setCurrentWriteChannel(int channel)
void	startTransaction()
int	writeChannelCount() const

Class QJsonObject:

QJsonObject::const_iterator	constFind(QLatin1String key) const
bool	contains(QLatin1String key) const
QJsonObject::iterator	find(QLatin1String key)
QJsonObject::const_iterator	find(QLatin1String key) const
QJsonValue	operator[](QLatin1String key) const
QJsonValueRef	operator[](QLatin1String key)
QJsonValue	value(QLatin1String key) const

Class QLocale:

QString toCurrencyString(double value, const QString &symbol, int precision) const

Class QMetaObject:

bool	inherits(const QMetaObject *metaObject) const

Class QMutex:

bool	isRecursive() const

Class QPair:

QDebug	operator<<(QDebug debug, const std::vector<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::list<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::map<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::multimap<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const QSharedPointer<T> &ptr)

Class QProcess:

QProcess::CreateProcessArgumentModifier	createProcessArgumentsModifier() const
void	setCreateProcessArgumentsModifier(QProcess::CreateProcessArgumentModifier modifier)

Class QRect:

QRect transposed() const

Class QRectF:

QRectF transposed() const

Class QRegExp:

QDebug	operator<<(QDebug debug, const std::vector<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::list<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::map<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::multimap<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const QSharedPointer<T> &ptr)

Class QSet:

QSet::iterator erase(QSet::const_iterator pos)

Class QSharedPointer:

QDebug operator<<(QDebug debug, const QSharedPointer<T> &ptr)

Class QString:

QDebug	operator<<(QDebug debug, const std::vector<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::list<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::map<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::multimap<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const QSharedPointer<T> &ptr)
void	resize(int size, QChar fillChar)

Class QStringView:

uint	qHash(const std::pair<T1, T2> &key, uint seed)

Class QStringRef:

QStringRef::const_reverse_iterator	crbegin() const
QStringRef::const_reverse_iterator	crend() const
QChar	operator[](int position) const
QStringRef::const_reverse_iterator	rbegin() const
QStringRef::const_reverse_iterator	rend() const

Class QTime:

QDebug	operator<<(QDebug debug, const std::vector<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::list<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::map<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::multimap<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const QSharedPointer<T> &ptr)

Class QUtf8:

QChar * convertToUnicode(QChar *buffer, const char *chars, int len)

Class QUuid:

QUuid	fromCFUUID(CFUUIDRef uuid)
QUuid	fromNSUUID(const NSUUID *uuid)
CFUUIDRef	toCFUUID() const
NSUUID *	toNSUUID() const

Class QCursor:

void	swap(QCursor &other)

Class QDrag:

void	cancel()

Class QIconEngine:

bool	isNull() const

Class QOpenGLFramebufferObject:

void blitFramebuffer(QOpenGLFramebufferObject *target, const QRect &targetRect, QOpenGLFramebufferObject *source, const QRect &sourceRect, GLbitfield buffers, GLenum filter, int readColorAttachmentIndex, int drawColorAttachmentIndex, QOpenGLFramebufferObject::FramebufferRestorePolicy restorePolicy)

Class Key:

bool	isValid() const

Class QPlatformDrag:

virtual void cancelDrag()

Class QPlatformIntegration:

virtual void beep() const

Class QWheelEvent:

bool	inverted() const

Class QMediaPlaylist:

bool	moveMedia(int from, int to)

Class QMediaPlaylistProvider:

virtual bool moveMedia(int from, int to)

Class QNetworkInterface:

int	interfaceIndexFromName(const QString &name)
QString	interfaceNameFromIndex(int index)

Class QSslConfiguration:

QSslKey ephemeralServerKey() const

Class QWindowsWindowFunctions:

void	setWindowActivationBehavior(int behavior)
const int	setWindowActivationBehaviorIdentifier()

Class QQmlDebuggingEnabler:

bool	startDebugConnector(const QString &pluginName, const QVariantHash &configuration)

Class QQmlFileSelector:

QFileSelector * selector() const

Class QQuickItem:

bool	isAncestorOf(const QQuickItem *child) const
QPointF	mapFromGlobal(const QPointF &point) const
QPointF	mapToGlobal(const QPointF &point) const

Class QQuickWebEngineProfile:

void	clearHttpCache()

Class QWebEngineDownloadItem:

QWebEngineDownloadItem::SavePageFormat	savePageFormat() const
void	setSavePageFormat(QWebEngineDownloadItem::SavePageFormat format)

Class QWebEnginePage:

void	audioMutedChanged(bool muted)
const QWebEngineContextMenuData &	contextMenuData() const
void	iconChanged(const QIcon &icon)
void	printToPdf(const QString &filePath, const QPageLayout &pageLayout)
void	printToPdf(const QWebEngineCallback<const QByteArray &> &resultCallback, const QPageLayout &pageLayout)
void	recentlyAudibleChanged(bool recentlyAudible)
void	setWebChannel(QWebChannel *channel, uint worldId)

Class QWebEngineProfile:

void	clearHttpCache()

Class QWebEngineView:

void	iconChanged(const QIcon &icon)

Class QMenu:

void	showTearOffMenu(const QPoint &pos)
void	showTearOffMenu()

Class QX11Info:

bool	isCompositingManagerRunning(int screen)

New Global Functions

QDebug	operator<<(QDebug debug, const QSharedPointer<T> &ptr)
QDebug	operator<<(QDebug debug, const std::multimap<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::map<Key, T, Compare, Alloc> &map)
QDebug	operator<<(QDebug debug, const std::list<T, Alloc> &vec)
QDebug	operator<<(QDebug debug, const std::vector<T, Alloc> &vec)
void	qAsConst(const T &&t)
typename std::add_const<T>::type &	qAsConst(T &t)
void	qAsConst(const T &&t)
typename std::add_const<T>::type &	qAsConst(T &t)
auto	qConstOverload(T memberFunctionPointer)
auto	qConstOverload(T memberFunctionPointer)
uint	qHash(const std::pair<T1, T2> &key, uint seed)
auto	qNonConstOverload(T memberFunctionPointer)
auto	qNonConstOverload(T memberFunctionPointer)
auto	qOverload(T functionPointer)
auto	qOverload(T functionPointer)

New Macros

const wchar_t *	qUtf16Printable(const QString &str)
const wchar_t *	qUtf16Printable(const QString &str)

New Enum Types

enum	AttAccessConstraint { AttAuthorizationRequired, AttAuthenticationRequired, AttEncryptionRequired }
enum	FloatingPointPrecisionOption { FloatingPointShortest }
enum	Role { CentralRole, PeripheralRole }
enum	FramebufferRestorePolicy { DontRestoreFramebufferBinding, RestoreFramebufferBindingToDefault, RestoreFrameBufferBinding }
enum	SavePageFormat { UnknownSaveFormat, SingleHtmlSaveFormat, CompleteHtmlSaveFormat, MimeHtmlSaveFormat }

New Type Aliases

typedef	const_reverse_iterator
typedef	SetWindowActivationBehaviorType

New Properties

desktopFileName : const
audioMuted : const
audioMuted : const
contentsSize : const

icon : const
recentlyAudible : const
scrollPosition : const
icon : const

New QML Types

A: AbstractActionInput; AbstractButton; Action; ActionInput; AlphaCoverage; AlphaTest; AnalogAxisInput; ApplicationWindow; Axis

B: BusyIndicator; Button; ButtonAxisInput; ButtonGroup

C: CheckBox; CheckDelegate; ClearBuffers; ColorMask; ComboBox; ComputeCommand; Container; Control; CullFace

D: DepthTest; Dial; DiffuseMapMaterial; DiffuseSpecularMapMaterial; DirectionalLight; DispatchCompute; Dithering; Drawer

E: Effect

F: FirstPersonCameraController; ForwardRenderer; Frame; FrontFace; FrustumCulling

G: Geometry; GeometryRenderer; GoochMaterial; GroupBox

I: InputChord; InputSequence; InputSettings; ItemDelegate

L: Label

M: Menu; MenuItem; MultiSampleAntiAliasing

N: NoDepthMask; NormalDiffuseMapAlphaMaterial; NormalDiffuseMapMaterial; NormalDiffuseSpecularMapMaterial

O: OrbitCameraController

P: Page; PageIndicator; Pane; PerVertexColorMaterial; PhongAlphaMaterial; PhongMaterial; PickingSettings; PointSize; PolygonOffset; Popup; ProgressBar

R: RadioButton; RadioDelegate; RangeSlider; RenderPass; RenderPassFilter; RenderSettings; RenderState; RenderSurfaceSelector; RenderTarget; RenderTargetOutput; RenderTargetSelector

S: SceneLoader; ScissorTest; ScrollBar; ScrollIndicator; ScxmlStateMachine; SeamlessCubemap; Slider; SortPolicy; SpinBox; StackView; StencilMask; StencilOperation; StencilOperationArguments; StencilTest; StencilTestArguments; SwipeDelegate; SwipeView; Switch; SwitchDelegate

T: TabBar; TabButton; Technique; TechniqueFilter; TextArea; TextField; ToolBar; ToolButton; ToolTip; Tumbler

V: Viewport

New QML Properties

	brightness
	caseSensitive
	copyrightsVisible
	enabled
	invert
	keyNavigationEnabled
	keyNavigationEnabled
	movementDirection
	preeditText
	preeditText
	source
	window

New QML Methods

	addItems()
	clear()
	clear()
	insertItems()
	mapFromGlobal()
	mapToGlobal()
	moveItem()
	removeItems()

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