The QGraphicsSceneHelpEvent class provides events when a tooltip is requested. More...
|qmake:||QT += widgets|
This class was introduced in Qt 4.2.
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
Destroys the event.
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().
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().
© 2021 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.