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                # QActionEvent Class Reference ## [[QtGui](index.htm) module] 該QActionEvent類提供了產生一個事件時,[QAction](qaction.html)添加,刪除或更改。[More...](#details) 繼承[QEvent](qevent.html)。 ### Methods * `__init__ (self, int?type, QAction?action, QAction?before?=?None)` * `__init__ (self, QActionEvent)` * `QAction action (self)` * `QAction before (self)` * * * ## Detailed Description 該QActionEvent類提供了產生一個事件時,[QAction](qaction.html)添加,刪除或更改。 操作可以使用被添加到小部件[QWidget.addAction](qwidget.html#addAction)( ) 。這將生成一個[ActionAdded](qevent.html#Type-enum)事件,您可以處理,以提供自定義行為。例如,[QToolBar](qtoolbar.html)重新實現[QWidget.actionEvent](qwidget.html#actionEvent)( )來創建[QToolButton](qtoolbutton.html)S為行動。 * * * ## Method Documentation ``` QActionEvent.__init__ (self, int?type, QAction?action, QAction?before?=?None) ``` 構造一個動作事件。該_type_可以[ActionChanged](qevent.html#Type-enum),[ActionAdded](qevent.html#Type-enum)或[ActionRemoved](qevent.html#Type-enum)。 _action_是改變的動作,添加或刪除。如果_type_ is [ActionAdded](qevent.html#Type-enum),動作是動作之前插入_before_。如果_before_為0時,動作被追加。 ``` QActionEvent.__init__ (self, QActionEvent) ``` ``` QAction QActionEvent.action (self) ``` [ 返回更改,添加或刪除的動作。 ](qaction.html) [**See also**](qaction.html) [before](qactionevent.html#before)( ) 。 ``` QAction QActionEvent.before (self) ``` [](qaction.html) [If](qaction.html) [type](qevent.html#type)()是[ActionAdded](qevent.html#Type-enum),返回應該出現在這之前的動作[action](qactionevent.html#action)( ) 。如果這個函數返回0時,動作應被追加到已有的同一部件的動作。 **See also** [action](qactionevent.html#action)()和[QWidget.actions](qwidget.html#actions)( ) 。
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