Qt 5.15
New Classes and Functions in Qt 5.1
Qt 5.15.8 Reference Documentation

New Classes and Functions in Qt 5.1

This page contains a comprehensive list of all new classes and functions introduced in Qt 5.1. 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 Signals
New QML Methods

New Classes

A: QAbstractOpenGLFunctions; QAccelerometer; QAccelerometerFilter; QAccelerometerReading; QAltimeter; QAltimeterFilter; QAltimeterReading; QAmbientLightFilter; QAmbientLightReading; QAmbientLightSensor; QAmbientTemperatureFilter; QAmbientTemperatureReading; QAmbientTemperatureSensor

B: Binder (QOpenGLVertexArrayObject)

C: QCompass; QCompassFilter; QCompassReading

D: QDBusVirtualObject; QDebugStateSaver

G: QGlobalStatic; QGyroscope; QGyroscopeFilter; QGyroscopeReading

H: QHolsterFilter; QHolsterReading; QHolsterSensor

I: QIRProximityFilter; QIRProximityReading; QIRProximitySensor

L: QLightFilter; QLightReading; QLightSensor; QLockFile

M: QMagnetometer; QMagnetometerFilter; QMagnetometerReading; QMessageAuthenticationCode

P: QPressureFilter; QPressureReading; QPressureSensor; QProximityFilter; QProximityReading; QProximitySensor

Q: QQmlApplicationEngine; QQuickTextDocument

R: QRegularExpressionValidator; QRotationFilter; QRotationReading; QRotationSensor

S: QSaveFile; QSensor; QSensorBackend; QSensorChangesInterface; QSensorGesture; QSensorGestureManager; QSensorGesturePluginInterface; QSensorGestureRecognizer; QSensorPluginInterface; QSerialPort; QSerialPortInfo

T: QTapFilter; QTapReading; QTapSensor; QTiltFilter; QTiltReading; QTiltSensor

X: QX11Info

New Member Functions

Class QAbstractFileEngine:

virtual bool	renameOverwrite(const QString &newName)
virtual bool	syncToDisk()

Class QByteArray:

QMargins	operator+(const QMargins &m1, const QMargins &m2)
QRect	operator+(const QRect &rectangle, const QMargins &margins)
QRect	operator+(const QMargins &margins, const QRect &rectangle)

Class QChar:

QChar::Script	script() const
QChar::Script	script(uint ucs4)

Class QDeadlineTimer:

QMargins	operator+(const QMargins &m1, const QMargins &m2)
QRect	operator+(const QRect &rectangle, const QMargins &margins)
QRect	operator+(const QMargins &margins, const QRect &rectangle)
QMargins	operator-(const QMargins &m1, const QMargins &m2)
QMargins	operator-(const QMargins &margins)

Class QJsonDocument:

QByteArray toJson(QJsonDocument::JsonFormat format) const

Class QLocale:

double	toDouble(const QStringRef &s, bool *ok) const
float	toFloat(const QStringRef &s, bool *ok) const
int	toInt(const QStringRef &s, bool *ok) const
qlonglong	toLongLong(const QStringRef &s, bool *ok) const
short	toShort(const QStringRef &s, bool *ok) const
uint	toUInt(const QStringRef &s, bool *ok) const
qulonglong	toULongLong(const QStringRef &s, bool *ok) const
ushort	toUShort(const QStringRef &s, bool *ok) const

Class QMap:

QMap::iterator insert(QMap::const_iterator pos, const Key &key, const T &value)

Class QMargins:

QMargins	operator(const QMargins &margins, int factor*)
QMargins	operator(int factor, const QMargins &margins*)
QMargins	operator(const QMargins &margins, qreal factor*)
QMargins	operator(qreal factor, const QMargins &margins*)
QMargins &	*operator=*(int factor*)
QMargins &	*operator=*(qreal factor*)
QMargins	operator+(const QMargins &m1, const QMargins &m2)
QRect	operator+(const QRect &rectangle, const QMargins &margins)
QRect	operator+(const QMargins &margins, const QRect &rectangle)
QMargins &	operator+=(const QMargins &margins)
QMargins	operator-(const QMargins &m1, const QMargins &m2)
QMargins	operator-(const QMargins &margins)
QMargins &	operator-=(const QMargins &margins)
QMargins	operator/(const QMargins &margins, int divisor)
QMargins	operator/(const QMargins &margins, qreal divisor)
QMargins &	operator/=(int divisor)
QMargins &	operator/=(qreal divisor)

Class QMarginsF:

QRect	operator+(const QRect &rectangle, const QMargins &margins)
QRect	operator+(const QMargins &margins, const QRect &rectangle)

Class QMetaMethod:

int	revision() const

Class QMetaProperty:

int	revision() const

Class QMultiMap:

typename QMap<Key, T>::iterator insert(typename QMap<Key, T>::const_iterator pos, const Key &key, const T &value)

Class QPoint:

int	dotProduct(const QPoint &p1, const QPoint &p2)
QMargins	operator(const QMargins &margins, int factor*)
QMargins	operator(int factor, const QMargins &margins*)
QMargins	operator(const QMargins &margins, qreal factor*)
QMargins	operator(qreal factor, const QMargins &margins*)
QMargins	operator+(const QMargins &m1, const QMargins &m2)
QRect	operator+(const QRect &rectangle, const QMargins &margins)
QRect	operator+(const QMargins &margins, const QRect &rectangle)
QMargins	operator-(const QMargins &m1, const QMargins &m2)
QMargins	operator-(const QMargins &margins)
QMargins	operator/(const QMargins &margins, int divisor)
QMargins	operator/(const QMargins &margins, qreal divisor)

Class QPointF:

qreal	dotProduct(const QPointF &p1, const QPointF &p2)
QMargins	operator(const QMargins &margins, int factor*)
QMargins	operator(int factor, const QMargins &margins*)
QMargins	operator(const QMargins &margins, qreal factor*)
QMargins	operator(qreal factor, const QMargins &margins*)
QMargins	operator+(const QMargins &m1, const QMargins &m2)
QRect	operator+(const QRect &rectangle, const QMargins &margins)
QRect	operator+(const QMargins &margins, const QRect &rectangle)
QMargins	operator-(const QMargins &m1, const QMargins &m2)
QMargins	operator-(const QMargins &margins)
QMargins	operator/(const QMargins &margins, int divisor)
QMargins	operator/(const QMargins &margins, qreal divisor)

Class QProcess:

void	setArguments(const QStringList &arguments)
void	setProgram(const QString &program)
void	start(QIODevice::OpenMode mode)

Class QRect:

QRect	marginsAdded(const QMargins &margins) const
QRect	marginsRemoved(const QMargins &margins) const
QRect	operator+(const QRect &rectangle, const QMargins &margins)
QRect	operator+(const QMargins &margins, const QRect &rectangle)
QRect &	operator+=(const QMargins &margins)
QRect &	operator-=(const QMargins &margins)

Class QRegularExpression:

QStringList namedCaptureGroups() const

Class QSharedPointer:

QSharedPointer<T> create(Args &&... args)

Class QSize:

QRect	operator+(const QRect &rectangle, const QMargins &margins)
QRect	operator+(const QMargins &margins, const QRect &rectangle)

Class QSizeF:

QRect	operator+(const QRect &rectangle, const QMargins &margins)
QRect	operator+(const QMargins &margins, const QRect &rectangle)

Class QString:

bool	contains(const QRegularExpression &re, QRegularExpressionMatch *rmatch) const
QMargins	operator+(const QMargins &m1, const QMargins &m2)
QRect	operator+(const QRect &rectangle, const QMargins &margins)
QRect	operator+(const QMargins &margins, const QRect &rectangle)

Class QStringRef:

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
QStringRef	trimmed() const

Class QUrl:

QList<QUrl>	fromStringList(const QStringList &urls, QUrl::ParsingMode mode)
QStringList	toStringList(const QList<QUrl> &urls, QUrl::FormattingOptions options)

Class QVarLengthArray:

void	squeeze()

Class QVector:

void	removeFirst()
void	removeLast()
T	takeFirst()
T	takeLast()

Class QIcon:

QSize	actualSize(QWindow *window, const QSize &size, QIcon::Mode mode, QIcon::State state) const
QPixmap	pixmap(QWindow *window, const QSize &size, QIcon::Mode mode, QIcon::State state) const

Class QInputMethod:

QRectF	inputItemRectangle() const
void	setInputItemRectangle(const QRectF &rect)

Class QKeySequence:

QList<QKeySequence>	listFromString(const QString &str, QKeySequence::SequenceFormat format)
QString	listToString(const QList<QKeySequence> &list, QKeySequence::SequenceFormat format)

Class QPlatformFontDatabase:

QSupportedWritingSystems writingSystemsFromTrueTypeBits(quint32[4] unicodeRange, quint32[2] codePageRange)

Class QPlatformTheme:

virtual QIconEngine * createIconEngine(const QString &iconName) const

Class QPlatformWindow:

virtual bool	isAlertState() const
virtual void	setAlertState(bool enable)

Class QRawFont:

QVector<QPointF>	advancesForGlyphIndexes(const QVector<quint32> &glyphIndexes, QRawFont::LayoutFlags layoutFlags) const
bool	advancesForGlyphIndexes(const quint32 *glyphIndexes, QPointF *advances, int numGlyphs, QRawFont::LayoutFlags layoutFlags) const

Class QVector2D:

float	distanceToLine(const QVector2D &point, const QVector2D &direction) const
float	distanceToPoint(const QVector2D &point) const

Class QVector3D:

float distanceToPoint(const QVector3D &point) const

Class QWindow:

void	alert(int msec)

Class QLocalSocket:

void	connectToServer(QIODevice::OpenMode openMode)
void	setServerName(const QString &name)

Class QNetworkAccessManager:

void	encrypted(QNetworkReply *reply)

Class QNetworkReply:

void	encrypted()

Class QSslConfiguration:

QList<QSslCertificate>	localCertificateChain() const
void	setLocalCertificateChain(const QList<QSslCertificate> &localChain)

Class QSslSocket:

QList<QSslCertificate>	localCertificateChain() const
void	setLocalCertificateChain(const QList<QSslCertificate> &localChain)

Class QQuickItem:

void	forceActiveFocus(Qt::FocusReason reason)

Class QQuickWindow:

void	closing(QQuickCloseEvent *close)
bool	hasDefaultAlphaBuffer()
void	setDefaultAlphaBuffer(bool useAlpha)

Class QAccelerometer:

void	accelerationModeChanged(QAccelerometer::AccelerationMode accelerationMode)
void	setAccelerationMode(QAccelerometer::AccelerationMode accelerationMode)

Class QLightSensor:

void	setFieldOfView(qreal fieldOfView)

Class QRotationSensor:

void	setHasZ(bool hasZ)

Class QSensor:

void	setCurrentOrientation(int currentOrientation)
void	setEfficientBufferSize(int efficientBufferSize)
void	setMaxBufferSize(int maxBufferSize)
void	setSkipDuplicates(bool skipDuplicates)
void	skipDuplicatesChanged(bool skipDuplicates)

Class QSqlRecord:

QSqlRecord keyValues(const QSqlRecord &keyFields) const

Class QSqlTableModel:

QSqlRecord primaryValues(int row) const

Class QGraphicsView:

void	rubberBandChanged(QRect rubberBandRect, QPointF fromScenePoint, QPointF toScenePoint)
QRect	rubberBandRect() const

Class QMenu:

QAction *	addSection(const QString &text)
QAction *	addSection(const QIcon &icon, const QString &text)
QAction *	insertSection(QAction *before, const QString &text)
QAction *	insertSection(QAction *before, const QIcon &icon, const QString &text)

New Global Functions

QMargins	operator(qreal factor, const QMargins &margins*)
QMargins	operator(const QMargins &margins, qreal factor*)
QMargins	operator(int factor, const QMargins &margins*)
QMargins	operator(const QMargins &margins, int factor*)
QRect	operator+(const QMargins &margins, const QRect &rectangle)
QRect	operator+(const QRect &rectangle, const QMargins &margins)
QMargins	operator+(const QMargins &m1, const QMargins &m2)
QMargins	operator-(const QMargins &margins)
QMargins	operator-(const QMargins &m1, const QMargins &m2)
QMargins	operator/(const QMargins &margins, qreal divisor)
QMargins	operator/(const QMargins &margins, int divisor)
double	qDegreesToRadians(double degrees)
float	qDegreesToRadians(float degrees)
double	qDegreesToRadians(double degrees)
float	qDegreesToRadians(float degrees)
bool	qEnvironmentVariableIsEmpty(const char *varName)
bool	qEnvironmentVariableIsEmpty(const char *varName)
bool	qEnvironmentVariableIsSet(const char *varName)
bool	qEnvironmentVariableIsSet(const char *varName)
double	qRadiansToDegrees(double radians)
float	qRadiansToDegrees(float radians)
double	qRadiansToDegrees(double radians)
float	qRadiansToDegrees(float radians)
bool	qunsetenv(const char *varName)
bool	qunsetenv(const char *varName)

New Macros

	Q_COREAPP_STARTUP_FUNCTION(QtStartUpFunction ptr)
	Q_COREAPP_STARTUP_FUNCTION(QtStartUpFunction ptr)
	Q_GLOBAL_STATIC(Type, VariableName)
	Q_GLOBAL_STATIC(Type, VariableName)
	Q_GLOBAL_STATIC_WITH_ARGS(Type, VariableName, Arguments)
	Q_GLOBAL_STATIC_WITH_ARGS(Type, VariableName, Arguments)

New Enum Types

enum	AccelerationMode { Combined, Gravity, User }
enum	Script { Script_Unknown, Script_Inherited, Script_Common, Script_Latin, Script_Greek, …, ScriptCount }
enum	JsonFormat { Indented, Compact }
enum	LayoutFlag { SeparateAdvances, KernedAdvances, UseDesignMetrics }
enum	AxesOrientationMode { FixedOrientation, AutomaticOrientation, UserOrientation }
enum	Visibility { Hidden, AutomaticVisibility, Windowed, Minimized, Maximized, FullScreen }
enum	ApplicationState { ApplicationSuspended, ApplicationHidden, ApplicationInactive, ApplicationActive }
enum	Edge { TopEdge, LeftEdge, RightEdge, BottomEdge }

New Type Aliases

typedef	qoutputrangelist
typedef	qrange
typedef	qrangelist
typedef	qoutputrangelist
typedef	qrange
typedef	qrangelist

New Properties

accelerationMode : const
toolTipsVisible : const
textInteractionFlags : const
axesOrientationMode : const
currentOrientation : const

skipDuplicates : const
userOrientation : const
active : const
opacity : const
visibility : const

New QML Types

A: ApplicationWindow

B: Button; ButtonStyle

C: CheckBox; CheckBoxStyle; CloseEvent; ColorDialog; ComboBox; ComboBoxStyle

F: FileDialog

G: GroupBox; GroupBoxStyle

L: Label

M: Menu; MenuBar

P: ProgressBar; ProgressBarStyle

R: RadioButton; RadioButtonStyle

S: ScrollView; ScrollViewStyle; Slider; SliderStyle; SpinBox; SplitView; StackView; StackViewDelegate; StatusBar

T: Tab; TableView; TableViewColumn; TableViewStyle; TabView; TabViewStyle; TextArea; TextField; TextFieldStyle; ToolBar; ToolButton

New QML Properties

	active
	activeFocusItem
	application
	contentOrientation
	desktopAvailableHeight
	desktopAvailableWidth
	effectiveHorizontalItemAlignment
	horizontalItemAlignment
`(obsolete)`	logicalPixelDensity
	maximumHeight
	maximumWidth
	minimumHeight
	minimumWidth
	name
	opacity
	platform
	selectByKeyboard
	textDocument
	verticalItemAlignment
	visibility

New QML Signals

closing()

New QML Methods

	alert()
	forceActiveFocus()
	forceLayout()
	forceLayout()
	nextItemInFocusChain()
	requestActivate()

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