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QGraphicsSceneHelpEvent Class

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

 #include <QGraphicsSceneHelpEvent>

Inherits: QGraphicsSceneEvent.

This class was introduced in Qt 4.2.

List of all members, including inherited members

Public Functions

	~QGraphicsSceneHelpEvent()
QPointF	scenePos() const
QPoint	screenPos() const

1 public function inherited from QGraphicsSceneEvent
6 public functions inherited from QEvent

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 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().

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.

Documentation sources may be obtained from www.qt-project.org.

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