The QGraphicsSceneHelpEvent class provides events when a tooltip is requested. More...

#include <qgraphicssceneevent.h>

Inheritance diagram for QGraphicsSceneHelpEvent:

Collaboration diagram for QGraphicsSceneHelpEvent:

Public Member Functions
	QGraphicsSceneHelpEvent (Type type=None)

	~QGraphicsSceneHelpEvent ()
	Destroys the event.

QPointF	scenePos () const
	Returns the position of the mouse cursor in scene coordinates at the moment the help event was sent.

void	setScenePos (const QPointF &pos)

QPoint	screenPos () const
	Returns the position of the mouse cursor in screen coordinates at the moment the help event was sent.

void	setScreenPos (const QPoint &pos)

Public Member Functions inherited from QGraphicsSceneEvent
	QGraphicsSceneEvent (Type type)

	~QGraphicsSceneEvent ()
	Destroys the event.

QWidget *	widget () const
	Returns the widget where the event originated, or \nullptr if the event originates from another application.

void	setWidget (QWidget *widget)

quint64	timestamp () const

void	setTimestamp (quint64 ts)

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`.

virtual void	setAccepted (bool accepted)

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.

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

Protected Member Functions inherited from QGraphicsSceneEvent
	QGraphicsSceneEvent (QGraphicsSceneEventPrivate &dd, Type type=None)

Protected Member Functions inherited from QEvent
	QEvent (Type type, InputEventTag)

	QEvent (Type type, PointerEventTag)

	QEvent (Type type, SinglePointEventTag)

Protected Attributes inherited from QGraphicsSceneEvent
QScopedPointer< QGraphicsSceneEventPrivate >	d_ptr

Protected Attributes inherited from QEvent
quint16	t

Detailed Description

The QGraphicsSceneHelpEvent class provides events when a tooltip is requested.

Since: 4.2

\inmodule QtWidgets

When a QGraphicsView receives a QEvent of type QEvent::ToolTip, it creates a QGraphicsSceneHelpEvent, which is forwarded to the scene. You can set a tooltip on a QGraphicsItem with \l{QGraphicsItem::}{setToolTip()}; by default QGraphicsScene displays the tooltip of the QGraphicsItem with the highest z-value (i.e, the top-most item) under the mouse position.

QGraphicsView does not forward events when \l{QWhatsThis}{"What's This"} and \l{QStatusTipEvent}{status tip} help is requested. If you need this, you can reimplement QGraphicsView::viewportEvent() and forward QStatusTipEvent events and \l{QEvent}{QEvents} of type QEvent::WhatsThis to the scene.

See also: QEvent

Definition at line 204 of file qgraphicssceneevent.h.

Constructor & Destructor Documentation

◆ QGraphicsSceneHelpEvent()

QGraphicsSceneHelpEvent::QGraphicsSceneHelpEvent ( Type type = None )

explicit

Constructs a graphics scene help event of the specified type.

Definition at line 1281 of file qgraphicssceneevent.cpp.

◆ ~QGraphicsSceneHelpEvent()

QGraphicsSceneHelpEvent::~QGraphicsSceneHelpEvent ( )

Destroys the event.

Definition at line 1289 of file qgraphicssceneevent.cpp.

Member Function Documentation

◆ scenePos()

QPointF QGraphicsSceneHelpEvent::scenePos ( ) const

Returns the position of the mouse cursor in scene coordinates at the moment the help event was sent.

See also: screenPos()

Definition at line 1299 of file qgraphicssceneevent.cpp.

References d.

◆ screenPos()

QPoint QGraphicsSceneHelpEvent::screenPos ( ) const

Returns the position of the mouse cursor in screen coordinates at the moment the help event was sent.

See also: scenePos()

Definition at line 1324 of file qgraphicssceneevent.cpp.

References d.

◆ setScenePos()

void QGraphicsSceneHelpEvent::setScenePos ( const QPointF & point )

Sets the position associated with the context menu to the given point in scene coordinates.

Definition at line 1312 of file qgraphicssceneevent.cpp.

References d, and pos.

Referenced by QGraphicsView::viewportEvent().

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◆ setScreenPos()

void QGraphicsSceneHelpEvent::setScreenPos ( const QPoint & point )

Sets the position associated with the context menu to the given point in screen coordinates.

Definition at line 1337 of file qgraphicssceneevent.cpp.