QGraphicsSceneHelpEvent Class Reference
[QtGui module]
The QGraphicsSceneHelpEvent class provides events when a tooltip is requested. More...
#include <QGraphicsSceneHelpEvent> Inherits QGraphicsSceneEvent.
This class was introduced in Qt 4.2.
Public Functions
Additional Inherited Members
- 1 property inherited from QEvent
- 1 static public member inherited from QEvent
Detailed Description
The QGraphicsSceneHelpEvent class provides events when a tooltip is requested.
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 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 "What's This" and status tip help is requested. If you need this, you can reimplement QGraphicsView::viewportEvent() and forward QStatusTipEvent events and QEvents of type QEvent::WhatsThis to the scene.
See also QEvent.
Member Function Documentation
QGraphicsSceneHelpEvent::~QGraphicsSceneHelpEvent ()
Destroys the event.
QPointF QGraphicsSceneHelpEvent::scenePos () const
Returns the position of the mouse cursor in scene coordinates at the moment the the help event was sent.
See also screenPos().
QPoint QGraphicsSceneHelpEvent::screenPos () const
Returns the position of the mouse cursor in screen coordinates at the moment the the help event was sent.
See also scenePos().
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