A base class for pointer events. More...

#include <qevent.h>

Inheritance diagram for QPointerEvent:

Collaboration diagram for QPointerEvent:

Public Member Functions
	QPointerEvent (Type type, const QPointingDevice *dev, Qt::KeyboardModifiers modifiers=Qt::NoModifier, const QList< QEventPoint > &points={})

const QPointingDevice *	pointingDevice () const
	Returns the source device from which this event originates.

QPointingDevice::PointerType	pointerType () const
	Returns the type of point that generated the event.

void	setTimestamp (quint64 timestamp) override

qsizetype	pointCount () const
	Returns the number of points in this pointer event.

QEventPoint &	point (qsizetype i)
	Returns a QEventPoint reference for the point at index i.

const QList< QEventPoint > &	points () const
	Returns a list of points in this pointer event.

QEventPoint *	pointById (int id)
	Returns the point whose \l {QEventPoint::id()}{id} matches the given id, or `nullptr` if no such point is found.

bool	allPointsGrabbed () const
	Returns `true` if every point in points() has either an exclusiveGrabber() or one or more passiveGrabbers().

virtual bool	isBeginEvent () const

virtual bool	isUpdateEvent () const

virtual bool	isEndEvent () const

bool	allPointsAccepted () const
	Returns `true` if isPointAccepted() is `true` for every point in points(); otherwise `false`.

virtual void	setAccepted (bool accepted) override
	\reimp

QObject *	exclusiveGrabber (const QEventPoint &point) const
	Returns the object which has been set to receive all future update events and the release event containing the given point.

void	setExclusiveGrabber (const QEventPoint &point, QObject *exclusiveGrabber)
	Informs the delivery logic that the given exclusiveGrabber is to receive all future update events and the release event containing the given point, and that delivery to other items can be skipped.

QList< QPointer< QObject > >	passiveGrabbers (const QEventPoint &point) const
	Returns the list of objects that have been requested to receive all future update events and the release event containing the given point.

void	clearPassiveGrabbers (const QEventPoint &point)
	Removes all passive grabbers from the given point.

bool	addPassiveGrabber (const QEventPoint &point, QObject *grabber)
	Informs the delivery logic that the given grabber is to receive all future update events and the release event containing the given point, regardless where else those events may be delivered.

bool	removePassiveGrabber (const QEventPoint &point, QObject *grabber)
	Removes the passive grabber from the given point if it was previously added.

Public Member Functions inherited from QInputEvent
	QInputEvent (Type type, const QInputDevice *m_dev, Qt::KeyboardModifiers modifiers=Qt::NoModifier)

const QInputDevice *	device () const

QInputDevice::DeviceType	deviceType () const
	Returns the type of device that generated the event.

Qt::KeyboardModifiers	modifiers () const
	Returns the keyboard modifier flags that existed immediately before the event occurred.

void	setModifiers (Qt::KeyboardModifiers modifiers)

quint64	timestamp () const
	Returns the window system's timestamp for this event.

Public Member Functions inherited from QEvent
	QEvent (Type type)
	Constructs an event object of type type.

virtual	~QEvent ()
	Destroys the event.

Type	type () const
	Returns the event type.

bool	spontaneous () const
	Returns `true` if the event originated outside the application (a system event); otherwise returns `false`.

bool	isAccepted () const

void	accept ()
	Sets the accept flag of the event object, the equivalent of calling setAccepted(true).

void	ignore ()
	Clears the accept flag parameter of the event object, the equivalent of calling setAccepted(false).

bool	isInputEvent () const noexcept

bool	isPointerEvent () const noexcept

bool	isSinglePointEvent () const noexcept

virtual QEvent *	clone () const
	Creates and returns an identical copy of this event.

Protected Member Functions
	QPointerEvent (Type type, SinglePointEventTag, const QInputDevice *dev, Qt::KeyboardModifiers modifiers=Qt::NoModifier)

Protected Member Functions inherited from QInputEvent
	QInputEvent (Type type, PointerEventTag, const QInputDevice *dev, Qt::KeyboardModifiers modifiers=Qt::NoModifier)

	QInputEvent (Type type, SinglePointEventTag, const QInputDevice *dev, Qt::KeyboardModifiers modifiers=Qt::NoModifier)

Protected Member Functions inherited from QEvent
	QT_DEFINE_TAG_STRUCT (InputEventTag)

	QEvent (Type type, InputEventTag)

	QT_DEFINE_TAG_STRUCT (PointerEventTag)

	QEvent (Type type, PointerEventTag)

	QT_DEFINE_TAG_STRUCT (SinglePointEventTag)

	QEvent (Type type, SinglePointEventTag)

Protected Attributes
QList< QEventPoint >	m_points

Protected Attributes inherited from QInputEvent
const QInputDevice *	m_dev = nullptr

quint64	m_timeStamp = 0

Qt::KeyboardModifiers	m_modState = Qt::NoModifier

quint32	m_reserved = 0

Protected Attributes inherited from QEvent
quint16	t

Additional Inherited Members
Public Types inherited from QEvent
enum	Type { None = 0 , Timer = 1 , MouseButtonPress = 2 , MouseButtonRelease = 3 , MouseButtonDblClick = 4 , MouseMove = 5 , KeyPress = 6 , KeyRelease = 7 , FocusIn = 8 , FocusOut = 9 , FocusAboutToChange = 23 , Enter = 10 , Leave = 11 , Paint = 12 , Move = 13 , Resize = 14 , Create = 15 , Destroy = 16 , Show = 17 , Hide = 18 , Close = 19 , Quit = 20 , ParentChange = 21 , ParentAboutToChange = 131 , ThreadChange = 22 , WindowActivate = 24 , WindowDeactivate = 25 , ShowToParent = 26 , HideToParent = 27 , Wheel = 31 , WindowTitleChange = 33 , WindowIconChange = 34 , ApplicationWindowIconChange = 35 , ApplicationFontChange = 36 , ApplicationLayoutDirectionChange = 37 , ApplicationPaletteChange = 38 , PaletteChange = 39 , Clipboard = 40 , Speech = 42 , MetaCall = 43 , SockAct = 50 , WinEventAct = 132 , DeferredDelete = 52 , DragEnter = 60 , DragMove = 61 , DragLeave = 62 , Drop = 63 , DragResponse = 64 , ChildAdded = 68 , ChildPolished = 69 , ChildRemoved = 71 , ShowWindowRequest = 73 , PolishRequest = 74 , Polish = 75 , LayoutRequest = 76 , UpdateRequest = 77 , UpdateLater = 78 , EmbeddingControl = 79 , ActivateControl = 80 , DeactivateControl = 81 , ContextMenu = 82 , InputMethod = 83 , TabletMove = 87 , LocaleChange = 88 , LanguageChange = 89 , LayoutDirectionChange = 90 , Style = 91 , TabletPress = 92 , TabletRelease = 93 , OkRequest = 94 , HelpRequest = 95 , IconDrag = 96 , FontChange = 97 , EnabledChange = 98 , ActivationChange = 99 , StyleChange = 100 , IconTextChange = 101 , ModifiedChange = 102 , MouseTrackingChange = 109 , WindowBlocked = 103 , WindowUnblocked = 104 , WindowStateChange = 105 , ReadOnlyChange = 106 , ToolTip = 110 , WhatsThis = 111 , StatusTip = 112 , ActionChanged = 113 , ActionAdded = 114 , ActionRemoved = 115 , FileOpen = 116 , Shortcut = 117 , ShortcutOverride = 51 , WhatsThisClicked = 118 , ToolBarChange = 120 , ApplicationActivate = 121 , ApplicationActivated = ApplicationActivate , ApplicationDeactivate = 122 , ApplicationDeactivated = ApplicationDeactivate , QueryWhatsThis = 123 , EnterWhatsThisMode = 124 , LeaveWhatsThisMode = 125 , ZOrderChange = 126 , HoverEnter = 127 , HoverLeave = 128 , HoverMove = 129 , AcceptDropsChange = 152 , ZeroTimerEvent = 154 , GraphicsSceneMouseMove = 155 , GraphicsSceneMousePress = 156 , GraphicsSceneMouseRelease = 157 , GraphicsSceneMouseDoubleClick = 158 , GraphicsSceneContextMenu = 159 , GraphicsSceneHoverEnter = 160 , GraphicsSceneHoverMove = 161 , GraphicsSceneHoverLeave = 162 , GraphicsSceneHelp = 163 , GraphicsSceneDragEnter = 164 , GraphicsSceneDragMove = 165 , GraphicsSceneDragLeave = 166 , GraphicsSceneDrop = 167 , GraphicsSceneWheel = 168 , GraphicsSceneLeave = 220 , KeyboardLayoutChange = 169 , DynamicPropertyChange = 170 , TabletEnterProximity = 171 , TabletLeaveProximity = 172 , NonClientAreaMouseMove = 173 , NonClientAreaMouseButtonPress = 174 , NonClientAreaMouseButtonRelease = 175 , NonClientAreaMouseButtonDblClick = 176 , MacSizeChange = 177 , ContentsRectChange = 178 , MacGLWindowChange = 179 , FutureCallOut = 180 , GraphicsSceneResize = 181 , GraphicsSceneMove = 182 , CursorChange = 183 , ToolTipChange = 184 , NetworkReplyUpdated = 185 , GrabMouse = 186 , UngrabMouse = 187 , GrabKeyboard = 188 , UngrabKeyboard = 189 , StateMachineSignal = 192 , StateMachineWrapped = 193 , TouchBegin = 194 , TouchUpdate = 195 , TouchEnd = 196 , NativeGesture = 197 , RequestSoftwareInputPanel = 199 , CloseSoftwareInputPanel = 200 , WinIdChange = 203 , Gesture = 198 , GestureOverride = 202 , ScrollPrepare = 204 , Scroll = 205 , Expose = 206 , InputMethodQuery = 207 , OrientationChange = 208 , TouchCancel = 209 , ThemeChange = 210 , SockClose = 211 , PlatformPanel = 212 , StyleAnimationUpdate = 213 , ApplicationStateChange = 214 , WindowChangeInternal = 215 , ScreenChangeInternal = 216 , PlatformSurface = 217 , Pointer = 218 , TabletTrackingChange = 219 , WindowAboutToChangeInternal = 221 , DevicePixelRatioChange = 222 , ChildWindowAdded = 223 , ChildWindowRemoved = 224 , ParentWindowAboutToChange = 225 , ParentWindowChange = 226 , User = 1000 , MaxUser = 65535 }
	This enum type defines the valid event types in Qt. More...

Static Public Member Functions inherited from QEvent
static int	registerEventType (int hint=-1) noexcept

Detailed Description

A base class for pointer events.

Since: 6.0 \inmodule QtGui

Definition at line 72 of file qevent.h.

Constructor & Destructor Documentation

◆ QPointerEvent() [1/2]

QPointerEvent::QPointerEvent	(	Type	type,
		const QPointingDevice *	dev,
		Qt::KeyboardModifiers	modifiers = Qt::NoModifier,
		const QList< QEventPoint > &	points = {} )

explicit

◆ QPointerEvent() [2/2]

QPointerEvent::QPointerEvent	(	Type	type,
		SinglePointEventTag	,
		const QInputDevice *	dev,
		Qt::KeyboardModifiers	modifiers = Qt::NoModifier )

protected

Member Function Documentation

◆ addPassiveGrabber()

bool QPointerEvent::addPassiveGrabber	(	const QEventPoint &	point,
		QObject *	grabber )

Informs the delivery logic that the given grabber is to receive all future update events and the release event containing the given point, regardless where else those events may be delivered.

It's only for use by \l {Qt Quick Input Handlers}.

Returns false if grabber was already added, true otherwise.

Definition at line 404 of file qevent.cpp.

◆ allPointsAccepted()

bool QPointerEvent::allPointsAccepted ( ) const

Returns true if isPointAccepted() is true for every point in points(); otherwise false.

Definition at line 306 of file qevent.cpp.

◆ allPointsGrabbed()

bool QPointerEvent::allPointsGrabbed ( ) const

Returns true if every point in points() has either an exclusiveGrabber() or one or more passiveGrabbers().

Definition at line 293 of file qevent.cpp.

◆ clearPassiveGrabbers()

void QPointerEvent::clearPassiveGrabbers ( const QEventPoint & point )

Removes all passive grabbers from the given point.

It's only for use by \l {Qt Quick Input Handlers}.

See also: QPointerEvent::addPassiveGrabber()

Definition at line 433 of file qevent.cpp.

◆ exclusiveGrabber()

QObject * QPointerEvent::exclusiveGrabber ( const QEventPoint & point ) const

Returns the object which has been set to receive all future update events and the release event containing the given point.

It's mainly for use in Qt Quick at this time.

Definition at line 351 of file qevent.cpp.

◆ isBeginEvent()

virtual bool QPointerEvent::isBeginEvent ( ) const

inlinevirtual

Reimplemented in QSinglePointEvent, and QTouchEvent.

Definition at line 90 of file qevent.h.

◆ isEndEvent()

virtual bool QPointerEvent::isEndEvent ( ) const

inlinevirtual

Reimplemented in QSinglePointEvent, and QTouchEvent.

Definition at line 92 of file qevent.h.

◆ isUpdateEvent()

virtual bool QPointerEvent::isUpdateEvent ( ) const

inlinevirtual

Reimplemented in QHoverEvent, QSinglePointEvent, and QTouchEvent.

Definition at line 91 of file qevent.h.

◆ passiveGrabbers()

QList< QPointer< QObject > > QPointerEvent::passiveGrabbers ( const QEventPoint & point ) const

Returns the list of objects that have been requested to receive all future update events and the release event containing the given point.

It's only for use by \l {Qt Quick Input Handlers}.

See also: QPointerEvent::addPassiveGrabber()

Definition at line 384 of file qevent.cpp.

◆ point()

QEventPoint & QPointerEvent::point ( qsizetype i )

Returns a QEventPoint reference for the point at index i.

Definition at line 240 of file qevent.cpp.

◆ pointById()

QEventPoint * QPointerEvent::pointById ( int id )

Returns the point whose \l {QEventPoint::id()}{id} matches the given id, or nullptr if no such point is found.

Definition at line 280 of file qevent.cpp.

◆ pointCount()

qsizetype QPointerEvent::pointCount ( ) const

inline

Returns the number of points in this pointer event.

Definition at line 85 of file qevent.h.

◆ pointerType()

QPointingDevice::PointerType QPointerEvent::pointerType ( ) const

inline

Returns the type of point that generated the event.

Definition at line 81 of file qevent.h.

◆ pointingDevice()

const QPointingDevice * QPointerEvent::pointingDevice ( ) const

Returns the source device from which this event originates.

This is the same as QInputEvent::device() but typecast for convenience.

Definition at line 330 of file qevent.cpp.

◆ points()

const QList< QEventPoint > & QPointerEvent::points ( ) const

inline

Returns a list of points in this pointer event.

Definition at line 87 of file qevent.h.

◆ removePassiveGrabber()

bool QPointerEvent::removePassiveGrabber	(	const QEventPoint &	point,
		QObject *	grabber )

Removes the passive grabber from the given point if it was previously added.

Returns true if it had been a passive grabber before, false if not.

It's only for use by \l {Qt Quick Input Handlers}.

See also: QPointerEvent::addPassiveGrabber()

Definition at line 419 of file qevent.cpp.

◆ setAccepted()

void QPointerEvent::setAccepted ( bool accepted )

overridevirtual

\reimp

Reimplemented from QEvent.

Definition at line 318 of file qevent.cpp.

◆ setExclusiveGrabber()

void QPointerEvent::setExclusiveGrabber	(	const QEventPoint &	point,
		QObject *	exclusiveGrabber )

Informs the delivery logic that the given exclusiveGrabber is to receive all future update events and the release event containing the given point, and that delivery to other items can be skipped.

It's mainly for use in Qt Quick at this time.

Definition at line 369 of file qevent.cpp.

◆ setTimestamp()

void QPointerEvent::setTimestamp ( quint64 timestamp )

overridevirtual

Sets the timestamp for this event and its points().

Reimplemented from QInputEvent.

Definition at line 338 of file qevent.cpp.

Member Data Documentation

◆ m_points

QList<QEventPoint> QPointerEvent::m_points

protected

Definition at line 105 of file qevent.h.

The documentation for this class was generated from the following files:

qtbase/src/gui/kernel/qevent.h (acc3ef6653c710b509e9321663986910f88ac3b4)
qtbase/src/gui/kernel/qevent.cpp (acc3ef6653c710b509e9321663986910f88ac3b4)

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QPointerEvent() [1/2]

◆ QPointerEvent() [2/2]

Member Function Documentation

◆ addPassiveGrabber()

◆ allPointsAccepted()

◆ allPointsGrabbed()

◆ clearPassiveGrabbers()

◆ exclusiveGrabber()

◆ isBeginEvent()

◆ isEndEvent()

◆ isUpdateEvent()

◆ passiveGrabbers()

◆ point()

◆ pointById()

◆ pointCount()

◆ pointerType()

◆ pointingDevice()

◆ points()

◆ removePassiveGrabber()

◆ setAccepted()

◆ setExclusiveGrabber()

◆ setTimestamp()

Member Data Documentation

◆ m_points