QGraphicsSceneHelpEvent Class ReferenceThe 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 MembersDetailed DescriptionThe 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
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