New Classes and Functions in Qt 5.8

This page contains a comprehensive list of all new classes and functions introduced in Qt 5.8. Links to new APIs in previous Qt 5 releases are found at the bottom of this page.

New Namespaces

New Classes

A
AssignmentInfo (QScxmlExecutableContent)
QAbstractOAuth
QAbstractOAuth2
QAbstractOAuthReplyHandler
QAbstractPhysicalDeviceProxy (Qt3DInput)
QAxisAccumulator (Qt3DInput)
C
QCanBus
QCanBusDevice
QCanBusFactory
QCanBusFrame
QCandlestickLegendMarker
QCandlestickModelMapper
QCandlestickSeries
QCandlestickSet
D
QDeadlineTimer
E
EvaluatorInfo (QScxmlExecutableContent)
F
Filter (QCanBusDevice)
ForeachInfo (QScxmlExecutableContent)
ForeachLoopBody (QScxmlDataModel)
H
QHCandlestickModelMapper
I
InvokeInfo (QScxmlExecutableContent)
L
Loader (QScxmlCompiler)
M
QModbusClient
QModbusDataUnit
QModbusDevice
QModbusDeviceIdentification
QModbusExceptionResponse
QModbusPdu
QModbusReply
QModbusRequest
QModbusResponse
QModbusRtuSerialMaster
QModbusRtuSerialSlave
QModbusServer
QModbusTcpClient
QModbusTcpServer
N
QNetworkDatagram
O
QOAuth1
QOAuth1Signature
QOAuth2AuthorizationCodeFlow
QOpenGLTextureBlitter
P
ParameterInfo (QScxmlExecutableContent)
QPaintedTextureImage (Qt3DRender)
QPointingDeviceUniqueId
R
QRenderCapture (Qt3DRender)
QRenderCaptureReply (Qt3DRender)
S
QSctpServer
QSctpSocket
QScxmlDynamicScxmlServiceFactory
QScxmlInvokableService
QScxmlInvokableServiceFactory
QScxmlStaticScxmlServiceFactory
QScxmlTableData
QSGImageNode
QSGRectangleNode
QSGRendererInterface
QSGRenderNode
QSslDiffieHellmanParameters
T
TakeRowResult (QFormLayout)
TimeStamp (QCanBusFrame)
V
QVCandlestickModelMapper
W
QWaylandBufferRef
QWaylandClient
QWaylandCompositor
QWaylandIviApplication
QWaylandIviSurface
QWaylandKeyboard
QWaylandOutput
QWaylandOutputMode
QWaylandPointer
QWaylandQuickItem
QWaylandQuickShellSurfaceItem
QWaylandSeat
QWaylandShellSurface
QWaylandSurface
QWaylandSurfaceGrabber
QWaylandTouch
QWaylandView
QWaylandWlShell
QWaylandWlShellSurface
QWaylandXdgPopupV5
QWaylandXdgShellV5
QWaylandXdgSurfaceV5

New Member Functions

Class QBluetoothDeviceDiscoveryAgent:

int lowEnergyDiscoveryTimeout() const
void setLowEnergyDiscoveryTimeout(int timeout)
void start(QBluetoothDeviceDiscoveryAgent::DiscoveryMethods methods)
QBluetoothDeviceDiscoveryAgent::DiscoveryMethods supportedDiscoveryMethods()

Class QLowEnergyController:

QBluetoothUuid remoteDeviceUuid() const

Class FromBase64Result:

bool operator!=(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator!=(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator!=(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator==(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator==(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator==(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QWeakPointer<T> &rhs)
uint qHash(const QHash<Key, T> &key, uint seed)
uint qHash(const QMultiHash<Key, T> &key, uint seed)

Class QChar:

bool operator!=(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator!=(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator!=(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator==(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator==(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator==(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QWeakPointer<T> &rhs)

Class QCommandLineOption:

QCommandLineOption::Flags flags() const
void setFlags(QCommandLineOption::Flags flags)

Class QDateTime:

qint64 currentSecsSinceEpoch()
QDateTime fromSecsSinceEpoch(qint64 secs, Qt::TimeSpec spec, int offsetSeconds)
QDateTime fromSecsSinceEpoch(qint64 secs, const QTimeZone &timeZone)
void setSecsSinceEpoch(qint64 secs)
qint64 toSecsSinceEpoch() const

Class QHash:

uint qHash(const QMultiHash<Key, T> &key, uint seed)

Class QKeyValueIterator:

bool operator!=(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator!=(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator!=(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator==(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator==(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator==(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QWeakPointer<T> &rhs)

Class QLatin1String:

QLatin1Char at(int pos) const
QLatin1String left(int length) const
QLatin1String mid(int start) const
QLatin1String mid(int start, int length) const
QLatin1Char operator[](int pos) const
QLatin1String right(int length) const

Class QLibraryInfo:

QVersionNumber version()

Class QLineF:

QPointF center() const

Class QLine:

QPoint center() const

Class QList:

uint qHash(const QHash<Key, T> &key, uint seed)
uint qHash(const QMultiHash<Key, T> &key, uint seed)

Class QMetaEnum:

bool isScoped() const

Class QMetaType:

bool operator!=(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator!=(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator==(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator==(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QWeakPointer<T> &rhs)

Class QMultiHash:

uint qHash(const QMultiHash<Key, T> &key, uint seed)

Class QMutex:

bool try_lock()
bool try_lock_for(std::chrono::duration<Rep, Period> duration)
bool try_lock_until(std::chrono::time_point<Clock, Duration> timePoint)

Class QPair:

bool operator!=(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator!=(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator!=(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator==(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator==(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator==(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QWeakPointer<T> &rhs)

Class QPoint:

CGPoint toCGPoint() const

Class QPointF:

QPointF fromCGPoint(CGPoint point)
CGPoint toCGPoint() const

Class QRect:

CGRect toCGRect() const

Class QRectF:

QRectF fromCGRect(CGRect rect)
CGRect toCGRect() const

Class QRegExp:

uint qHash(const QHash<Key, T> &key, uint seed)
uint qHash(const QMultiHash<Key, T> &key, uint seed)

Class QResource:

QDateTime lastModified() const

Class QScopedPointer:

bool operator!=(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator!=(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator!=(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator==(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator==(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator==(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QWeakPointer<T> &rhs)

Class QSharedPointer:

bool operator!=(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator!=(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator==(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator==(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QWeakPointer<T> &rhs)

Class QSize:

CGSize toCGSize() const

Class QSizeF:

QSizeF fromCGSize(CGSize size)
CGSize toCGSize() const

Class QStringList:

QString join(QLatin1String separator) const

Class QStringRef:

void chop(int n)
int compare(const QByteArray &other, Qt::CaseSensitivity cs) const

Class QStringView:

uint qHash(const QHash<Key, T> &key, uint seed)
uint qHash(const QMultiHash<Key, T> &key, uint seed)

Class QTimer:

std::chrono::milliseconds intervalAsDuration() const
std::chrono::milliseconds remainingTimeAsDuration() const
void singleShot(std::chrono::milliseconds msec, const QObject *receiver, const char *member)
void singleShot(std::chrono::milliseconds msec, Qt::TimerType timerType, const QObject *receiver, const char *member)
void start(std::chrono::milliseconds msec)

Class QVarLengthArray:

bool operator!=(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator!=(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator==(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator==(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QWeakPointer<T> &rhs)
uint qHash(const QHash<Key, T> &key, uint seed)
uint qHash(const QMultiHash<Key, T> &key, uint seed)

Class QVector:

uint qHash(const QHash<Key, T> &key, uint seed)
uint qHash(const QMultiHash<Key, T> &key, uint seed)

Class QWaitCondition:

void notify_all()
void notify_one()

Class QWeakPointer:

bool operator!=(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator!=(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator==(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator==(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QWeakPointer<T> &rhs)

Class QAbstractTextDocumentLayout:

QTextFormat formatAt(const QPointF &pos) const
QString imageAt(const QPointF &pos) const

Class QColor:

bool isValidColor(QLatin1String name)
void setNamedColor(QLatin1String name)

Class QFont:

uint qHash(const QRawFont &font, uint seed)

Class QFontMetricsF:

qreal capHeight() const

Class QFontMetrics:

int capHeight() const

Class QMatrix:

uint qHash(const QRawFont &font, uint seed)

Class QOpenGLContext:

QFunctionPointer getProcAddress(const char *procName) const

Class QPlatformTheme:

virtual QIcon fileIcon(const QFileInfo &fileInfo, QPlatformTheme::IconOptions iconOptions) const

Class QPointingDeviceUniqueId:

bool operator!=(QPointingDeviceUniqueId lhs, QPointingDeviceUniqueId rhs)
bool operator==(QPointingDeviceUniqueId lhs, QPointingDeviceUniqueId rhs)
uint qHash(QPointingDeviceUniqueId key, uint seed)
uint qHash(const QRawFont &font, uint seed)

Class QRawFont:

qreal capHeight() const
uint qHash(const QRawFont &font, uint seed)

Class QRegion:

QRegion::const_iterator begin() const
QRegion::const_iterator cbegin() const
QRegion::const_iterator cend() const
QRegion::const_reverse_iterator crbegin() const
QRegion::const_reverse_iterator crend() const
QRegion::const_iterator end() const
QRegion::const_reverse_iterator rbegin() const
QRegion::const_reverse_iterator rend() const

Class QRhiVertexInputBinding:

bool operator!=(QPointingDeviceUniqueId lhs, QPointingDeviceUniqueId rhs)
uint qHash(const QRawFont &font, uint seed)

Class QShaderKey:

uint qHash(QPointingDeviceUniqueId key, uint seed)
uint qHash(const QRawFont &font, uint seed)

Class UniformBlock:

bool operator==(QPointingDeviceUniqueId lhs, QPointingDeviceUniqueId rhs)

Class QTransform:

uint qHash(const QRawFont &font, uint seed)

Class TouchPoint:

qreal rotation() const
QPointingDeviceUniqueId uniqueId() const

Class QVector2D:

bool operator!=(QPointingDeviceUniqueId lhs, QPointingDeviceUniqueId rhs)
bool operator==(QPointingDeviceUniqueId lhs, QPointingDeviceUniqueId rhs)

Class QHostAddress:

bool isEqual(const QHostAddress &other, QHostAddress::ConversionMode mode) const
QDebug operator<<(QDebug debug, const QSslDiffieHellmanParameters &dhparam)
QHostAddress &operator=(QHostAddress::SpecialAddress address)
void setAddress(QHostAddress::SpecialAddress address)

Class QNetworkAccessManager:

QNetworkReply *sendCustomRequest(const QNetworkRequest &request, const QByteArray &verb, const QByteArray &data)
QNetworkReply *sendCustomRequest(const QNetworkRequest &request, const QByteArray &verb, QHttpMultiPart *multiPart)

Class QNetworkCacheMetaData:

QDebug operator<<(QDebug debug, const QSslDiffieHellmanParameters &dhparam)

Class QNetworkProxyFactory:


Class QOcspResponse:

bool operator==(const QSslDiffieHellmanParameters &lhs, const QSslDiffieHellmanParameters &rhs)

Class QSslConfiguration:

QSslDiffieHellmanParameters diffieHellmanParameters() const
QByteArray preSharedKeyIdentityHint() const
void setDiffieHellmanParameters(const QSslDiffieHellmanParameters &dhparams)
void setPreSharedKeyIdentityHint(const QByteArray &hint)

Class QSslDiffieHellmanParameters:

QDebug operator<<(QDebug debug, const QSslDiffieHellmanParameters &dhparam)
bool operator==(const QSslDiffieHellmanParameters &lhs, const QSslDiffieHellmanParameters &rhs)
uint qHash(const QSslDiffieHellmanParameters &dhparam, uint seed)

Class QSslPreSharedKeyAuthenticator:

bool operator==(const QSslDiffieHellmanParameters &lhs, const QSslDiffieHellmanParameters &rhs)

Class QUdpSocket:

QNetworkDatagram receiveDatagram(qint64 maxSize)
qint64 writeDatagram(const QNetworkDatagram &datagram)

Class QJSEngine:

QJSValue newQMetaObject(const QMetaObject *metaObject)
QJSValue newQMetaObject()

Class QJSValue:

bool isQMetaObject() const
const QMetaObject *toQMetaObject() const

Class QQmlEngine:

void exit(int retCode)
int qmlRegisterUncreatableMetaObject(const QMetaObject &staticMetaObject, const char *uri, int versionMajor, int versionMinor, const char *qmlName, const QString &reason)

Class QQuickWindow:

QSGImageNode *createImageNode() const
QSGNinePatchNode *createNinePatchNode() const
QSGRectangleNode *createRectangleNode() const
QSGRendererInterface *rendererInterface() const
void setSceneGraphBackend(QSGRendererInterface::GraphicsApi api)
void setSceneGraphBackend(const QString &backend)

Class QSGEngine:

QSGImageNode *createImageNode() const
QSGNinePatchNode *createNinePatchNode() const
QSGRectangleNode *createRectangleNode() const
QSGRendererInterface *rendererInterface() const

Class QQuickStyle:

void setFallbackStyle(const QString &style)

Class QSerialPort:

void errorOccurred(QSerialPort::SerialPortError error)

Class QQuickWebEngineProfile:

QStringList spellCheckLanguages() const

Class QWebSocket:

void preSharedKeyAuthenticationRequired(QSslPreSharedKeyAuthenticator *authenticator)

Class QWebSocketServer:

void preSharedKeyAuthenticationRequired(QSslPreSharedKeyAuthenticator *authenticator)

Class QFormLayout:

void removeRow(int row)
void removeRow(QWidget *widget)
void removeRow(QLayout *layout)
QFormLayout::TakeRowResult takeRow(int row)
QFormLayout::TakeRowResult takeRow(QWidget *widget)
QFormLayout::TakeRowResult takeRow(QLayout *layout)

Class QMainWindow:

void tabifiedDockWidgetActivated(QDockWidget *dockWidget)

Class QUndoStack:

void resetClean()

New Functions in Namespaces

QAndroidJniObject androidContext()
qreal convertVolume(qreal volume, QAudio::VolumeScale from, QAudio::VolumeScale to)
QTouchDevice *createTouchDevice(QTouchDevice::DeviceType devType)
char *toString(std::nullptr_t)

New Global Functions

bool operator!=(QPointingDeviceUniqueId lhs, QPointingDeviceUniqueId rhs)
bool operator!=(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator!=(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator!=(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator!=(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator!=(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
QDebug operator<<(QDebug debug, const QSslDiffieHellmanParameters &dhparam)
bool operator==(const QSslDiffieHellmanParameters &lhs, const QSslDiffieHellmanParameters &rhs)
bool operator==(QPointingDeviceUniqueId lhs, QPointingDeviceUniqueId rhs)
bool operator==(std::nullptr_t, const QWeakPointer<T> &rhs)
bool operator==(const QWeakPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QSharedPointer<T> &rhs)
bool operator==(const QSharedPointer<T> &lhs, std::nullptr_t)
bool operator==(std::nullptr_t, const QScopedPointer<T, Cleanup> &rhs)
bool operator==(const QScopedPointer<T, Cleanup> &lhs, std::nullptr_t)
uint qHash(const QSslDiffieHellmanParameters &dhparam, uint seed)
uint qHash(const QRawFont &font, uint seed)
uint qHash(QPointingDeviceUniqueId key, uint seed)
uint qHash(const QMultiHash<Key, T> &key, uint seed)
uint qHash(const QHash<Key, T> &key, uint seed)
int qmlRegisterUncreatableMetaObject(const QMetaObject &staticMetaObject, const char *uri, int versionMajor, int versionMinor, const char *qmlName, const QString &reason)

New Macros

New Enum Types

enum VolumeScale { LinearVolumeScale, CubicVolumeScale, LogarithmicVolumeScale, DecibelVolumeScale }
enum DiscoveryMethod { NoMethod, ClassicMethod, LowEnergyMethod }
enum ConversionModeFlag { ConvertV4MappedToIPv4, ConvertV4CompatToIPv4, ConvertUnspecifiedAddress, ConvertLocalHost, TolerantConversion, StrictConversion }
enum LegendMarkerType { LegendMarkerTypeArea, LegendMarkerTypeBar, LegendMarkerTypePie, LegendMarkerTypeXY, LegendMarkerTypeBoxPlot, LegendMarkerTypeCandlestick }
enum anonymous { NoContainer, NoString, NoInstruction, NoEvaluator }

New Type Aliases

New Properties

New QML Types

New QML Properties

New QML Signals

New QML Methods

Additions to Other Qt 5 Releases

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