ToolStripComboBox.OnSubscribeControlEvents(Control) 方法

定義

從指定的控制項訂閱事件。Subscribes events from the specified control.

protected:
 override void OnSubscribeControlEvents(System::Windows::Forms::Control ^ control);
protected override void OnSubscribeControlEvents (System.Windows.Forms.Control control);
override this.OnSubscribeControlEvents : System.Windows.Forms.Control -> unit

參數

control
Control

要訂閱事件的來源控制項。The control from which to subscribe events.

備註

覆寫 OnSubscribeControlEvents 方法,以新增或防止同步處理控制項事件。Override the OnSubscribeControlEvents method to add or prevent the synchronizing of control events.

如果您在此覆寫並連結事件,請使用 OnUnsubscribeControlEvents 方法將它們解除連接。If you override and hook up events here, unhook them by using the OnUnsubscribeControlEvents method.

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.

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

覆寫衍生類別中的 OnSubscribeControlEvents(Control) 時,請務必呼叫基類的 OnSubscribeControlEvents(Control) 方法,讓已註冊的委派能接收事件。When overriding OnSubscribeControlEvents(Control) in a derived class, be sure to call the base class’s OnSubscribeControlEvents(Control) method so that registered delegates receive the event.

適用於