ToolStrip.OnVisibleChanged(EventArgs) ToolStrip.OnVisibleChanged(EventArgs) ToolStrip.OnVisibleChanged(EventArgs) ToolStrip.OnVisibleChanged(EventArgs) Method

定義

引發 VisibleChanged 事件。Raises the VisibleChanged event.

protected:
 override void OnVisibleChanged(EventArgs ^ e);
protected override void OnVisibleChanged (EventArgs e);
override this.OnVisibleChanged : EventArgs -> unit
Protected Overrides Sub OnVisibleChanged (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

變更的ToolStrip ToolStripItem屬性不會引發的各種 * 已變更事件。 EnabledChanging the Enabled property of a ToolStrip does not raise the various *Changed events of a ToolStripItem. 使用特定的屬性設定來引發這些事件。Raise those events with specific property settings.

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.

OnVisibleChanged 方法也允許衍生類別處理事件,而不用附加委派。The OnVisibleChanged 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

在衍生OnVisibleChanged(EventArgs)類別中覆寫時,請務必呼叫基類OnVisibleChanged(EventArgs)的方法,讓已註冊的委派能接收事件。When overriding OnVisibleChanged(EventArgs) in a derived class, be sure to call the base class' OnVisibleChanged(EventArgs) method so that registered delegates receive the event.

適用於