MenuStrip.OnMenuActivate(EventArgs) MenuStrip.OnMenuActivate(EventArgs) MenuStrip.OnMenuActivate(EventArgs) MenuStrip.OnMenuActivate(EventArgs) Method

定義

引發 MenuActivate 事件。Raises the MenuActivate event.

protected:
 virtual void OnMenuActivate(EventArgs ^ e);
protected virtual void OnMenuActivate (EventArgs e);
abstract member OnMenuActivate : EventArgs -> unit
override this.OnMenuActivate : EventArgs -> unit
Protected Overridable Sub OnMenuActivate (e As EventArgs)

參數

e
EventArgs EventArgs EventArgs EventArgs

包含事件資料的 EventArgsAn EventArgs that contains the event data.

備註

引發事件會透過委派叫用此事件處理常式。Raising an event invokes the event handler through a delegate. 如需詳細資訊, 請參閱處理和引發事件For more information, see Handling and Raising Events.

OnMenuActivate 方法也允許衍生類別處理事件,而不用附加委派。The OnMenuActivate method also allows derived classes to handle the event without attaching a delegate. 這是在衍生類別中處理事件的慣用技巧。This is the preferred technique for handling the event in a derived class.

給繼承者的注意事項

當在衍生類別中覆寫 OnMenuActivate(EventArgs) 時,請確定呼叫基底類別的 OnMenuActivate(EventArgs) 方法,使已註冊的委派能接收到事件。When overriding OnMenuActivate(EventArgs) in a derived class, be sure to call the base class's OnMenuActivate(EventArgs) method so that registered delegates receive the event.

適用於