QGraphicsSceneContextMenuEvent Class
The QGraphicsSceneContextMenuEvent class provides context menu events in the graphics view framework. 更多...
| 头文件: | #include <QGraphicsSceneContextMenuEvent> |
| qmake: | QT += widgets |
| 开始支持版本: | Qt 4.2 |
| 基类: | QGraphicsSceneEvent |
公有类型
| enum | Reason { Mouse, Keyboard, Other } |
公有函数
| ~QGraphicsSceneContextMenuEvent() | |
| Qt::KeyboardModifiers | modifiers() const |
| QPointF | pos() const |
| Reason | reason() const |
| QPointF | scenePos() const |
| QPoint | screenPos() const |
- 1 个公有函数继承自 QGraphicsSceneEvent
- 6 个公有函数继承自 QEvent
其他继承的成员
详细描述
The QGraphicsSceneContextMenuEvent class provides context menu events in the graphics view framework.
A QContextMenuEvent received by a QGraphicsView is translated into a QGraphicsSceneContextMenuEvent. The QContextMenuEvent::globalPos() is translated into item, scene, and screen coordinates (pos(), scenePos(), and screenPos()).
参见 QGraphicsSceneMouseEvent, QGraphicsSceneWheelEvent, and QContextMenuEvent.
成员类型
enum QGraphicsSceneContextMenuEvent::Reason
This enum describes the reason why the context event was sent.
| Constant | Value | Description |
|---|---|---|
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 | The event was sent by some other means (i.e. not by the mouse or keyboard). |
成员函数
QGraphicsSceneContextMenuEvent::~QGraphicsSceneContextMenuEvent()
Destroys the event.
Qt::KeyboardModifiers QGraphicsSceneContextMenuEvent::modifiers() const
Returns the keyboard modifiers in use when the context menu was requested.
QPointF QGraphicsSceneContextMenuEvent::pos() const
Returns the position of the mouse cursor in item coordinates at the moment the context menu was requested.
参见 scenePos() and screenPos().
Reason QGraphicsSceneContextMenuEvent::reason() const
Returns the reason for the context menu event.
参见 QGraphicsSceneContextMenuEvent::Reason.
QPointF QGraphicsSceneContextMenuEvent::scenePos() const
Returns the position of the mouse cursor in scene coordinates at the moment the context menu was requested.
QPoint QGraphicsSceneContextMenuEvent::screenPos() const
Returns the position of the mouse cursor in screen coordinates at the moment the context menu was requested.