The QGraphicsSceneContextMenuEvent class provides context menu events in the graphics view framework. 更多...
| 頭： | #include <QGraphicsSceneContextMenuEvent> |
| qmake: | QT += widgets |
| Since: | Qt 4.2 |
| 繼承： | QGraphicsSceneEvent |
| enum | Reason { Mouse, Keyboard, Other } |
| ~QGraphicsSceneContextMenuEvent () | |
| Qt::KeyboardModifiers | modifiers () const |
| QPointF | pos () const |
| Reason | reason () const |
| QPointF | scenePos () const |
| QPoint | screenPos () const |
The QGraphicsSceneContextMenuEvent class provides context menu events in the graphics view framework.
A QContextMenuEvent 接收通過 QGraphicsView is translated into a QGraphicsSceneContextMenuEvent 。 QContextMenuEvent::globalPos () 被翻譯成項、場景及屏幕坐標 ( pos (), scenePos ()，和 screenPos ()).
另請參閱 QGraphicsSceneMouseEvent , QGraphicsSceneWheelEvent ，和 QContextMenuEvent .
此枚舉描述為什麼發送上下文事件的原因。
| 常量 | 值 | 描述 |
|---|---|---|
QGraphicsSceneContextMenuEvent::Mouse
|
0
|
The mouse caused the event to be sent. On most platforms, this means the right mouse button was clicked. |
QGraphicsSceneContextMenuEvent::Keyboard
|
1
|
The keyboard caused this event to be sent. On Windows and macOS, this means the menu button was pressed. |
QGraphicsSceneContextMenuEvent::Other
|
2
|
事件是通過某些其它手段發送的 (即：不通過鼠標或鍵盤)。 |
銷毀事件。
Returns the keyboard modifiers in use when the context menu was requested.
Returns the position of the mouse cursor in item coordinates at the moment the context menu was requested.
另請參閱 scenePos () 和 screenPos ().
Returns the reason for the context menu event.
另請參閱 QGraphicsSceneContextMenuEvent::Reason .
Returns the position of the mouse cursor in scene coordinates at the moment the context menu was requested.
Returns the position of the mouse cursor in screen coordinates at the moment the context menu was requested.
