QGraphicsSceneContextMenuEvent 類

QGraphicsSceneContextMenuEvent 類在圖形視圖框架中提供上下文菜單事件。更多...

頭：	#include <QGraphicsSceneContextMenuEvent>
qmake:	QT += widgets
Since:	Qt 4.2
繼承：	QGraphicsSceneEvent

該類在 Qt 4.2 引入。

所有成員列錶，包括繼承成員

公共類型

enum	Reason { Mouse, Keyboard, Other }

公共函數

virtual	~QGraphicsSceneContextMenuEvent ()
Qt::KeyboardModifiers	modifiers () const
QPointF	pos () const
QGraphicsSceneContextMenuEvent::Reason	reason () const
QPointF	scenePos () const
QPoint	screenPos () const

詳細描述

A QContextMenuEvent 接收通過 QGraphicsView 被翻譯成 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 .

成員類型文檔編製

enum QGraphicsSceneContextMenuEvent:: Reason

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)。

成員函數文檔編製

`[虛擬]` QGraphicsSceneContextMenuEvent:: ~QGraphicsSceneContextMenuEvent ()

銷毀事件。

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.

另請參閱 scenePos () 和 screenPos ().

QGraphicsSceneContextMenuEvent::Reason QGraphicsSceneContextMenuEvent:: reason () const

Returns the reason for the context menu event.

另請參閱 QGraphicsSceneContextMenuEvent::Reason .

QPointF QGraphicsSceneContextMenuEvent:: scenePos () const

Returns the position of the mouse cursor in scene coordinates at the moment the context menu was requested.

另請參閱 pos () 和 screenPos ().

QPoint QGraphicsSceneContextMenuEvent:: screenPos () const

Returns the position of the mouse cursor in screen coordinates at the moment the context menu was requested.

另請參閱 pos () 和 scenePos ().