ToolStrip.OnPaint(PaintEventArgs) 方法

定義

引發 Paint 事件。Raises the Paint event.

protected:
 override void OnPaint(System::Windows::Forms::PaintEventArgs ^ e);
protected override void OnPaint (System.Windows.Forms.PaintEventArgs e);
override this.OnPaint : System.Windows.Forms.PaintEventArgs -> unit
Protected Overrides Sub OnPaint (e As PaintEventArgs)

參數

e
PaintEventArgs

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

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

適用於