ScrollableControl.OnScroll(ScrollEventArgs) ScrollableControl.OnScroll(ScrollEventArgs) ScrollableControl.OnScroll(ScrollEventArgs) ScrollableControl.OnScroll(ScrollEventArgs) Method

定義

引發 Scroll 事件。Raises the Scroll event.

protected:
 virtual void OnScroll(System::Windows::Forms::ScrollEventArgs ^ se);
protected virtual void OnScroll (System.Windows.Forms.ScrollEventArgs se);
abstract member OnScroll : System.Windows.Forms.ScrollEventArgs -> unit
override this.OnScroll : System.Windows.Forms.ScrollEventArgs -> unit
Protected Overridable Sub OnScroll (se As ScrollEventArgs)

參數

se
ScrollEventArgs ScrollEventArgs ScrollEventArgs ScrollEventArgs

ScrollEventArgs,其中包含事件資料。A ScrollEventArgs 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.

OnScroll 方法也允許衍生類別處理事件,而不用附加委派。The OnScroll 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 OnScroll(ScrollEventArgs) 時,請確定呼叫基底類別的 OnScroll(ScrollEventArgs) 方法,使已註冊的委派能接收到事件。When overriding OnScroll(ScrollEventArgs) in a derived class, be sure to call the base class's OnScroll(ScrollEventArgs) method so that registered delegates receive the event.

適用於

另請參閱