The QGraphicsSceneMouseEvent class provides mouse events in the graphics view framework. 更多...
继承 QGraphicsSceneEvent .
The QGraphicsSceneMouseEvent class provides mouse events in the graphics view framework.
当 QGraphicsView 接收 QMouseEvent , it translates it to a QGraphicsSceneMouseEvent. The event is then forwarded to the QGraphicsScene associated with the view. If the event is not handled by the scene, the view may use it, e.g., for the DragMode .
In addition to containing the item, scene, and screen coordinates of the event (as pos (), scenePos ()，和 screenPos ()), mouse events also contain the coordinates of the previous mouse event received by the view. These can be retrieved with lastPos (), lastScreenPos (), and lastScenePos ().
Returns the mouse button (if any) that caused the event.
另请参阅 buttons () 和 modifiers ().
Returns the mouse cursor position in item coordinates where the specified button was clicked.
另请参阅 buttonDownScenePos (), buttonDownScreenPos (), and pos ().
Returns the mouse cursor position in scene coordinates where the specified button was clicked.
另请参阅 buttonDownPos (), buttonDownScreenPos (), and scenePos ().
Returns the mouse cursor position in screen coordinates where the specified button was clicked.
另请参阅 screenPos (), buttonDownPos (), and buttonDownScenePos ().
Returns the combination of mouse buttons that were pressed at the time the event was sent.
另请参阅 button () 和 modifiers ().
Returns the last recorded mouse cursor position in item coordinates.
另请参阅 lastScenePos (), lastScreenPos (), and pos ().
Returns the last recorded mouse cursor position in scene coordinates. The last recorded position is the position of the previous mouse event received by the view that created the 事件。
另请参阅 lastPos (), lastScreenPos (), and scenePos ().
Returns the last recorded mouse cursor position in screen coordinates. The last recorded position is the position of the previous mouse event received by the view that created the 事件。
另请参阅 lastPos (), lastScenePos (), and screenPos ().
Returns the keyboard modifiers in use at the time the event was sent.
Returns the mouse cursor position in item coordinates.
另请参阅 scenePos (), screenPos ()，和 lastPos ().
Returns the mouse cursor position in scene coordinates.
另请参阅 pos (), screenPos ()，和 lastScenePos ().
Returns the mouse cursor position in screen coordinates.
另请参阅 pos (), scenePos ()，和 lastScreenPos ().
