Control.OnMove(EventArgs) 方法

定義

引發 Move 事件。Raises the Move event.

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

參數

e
EventArgs

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

範例

下列程式碼範例使用 Move 事件,在表單的標題列上顯示表單的位置(以螢幕座標表示)。The following code example uses the Move event to display the location of the form in screen coordinates on the caption bar of the form.

   // The following example displays the location of the form in screen coordinates
   // on the caption bar of the form.
private:
   void Form1_Move( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      this->Text = String::Format( "Form screen position = {0}", this->Location );
   }
// The following example displays the location of the form in screen coordinates
// on the caption bar of the form.
private void Form1_Move(object sender, System.EventArgs e)
{
    this.Text = "Form screen position = " + this.Location.ToString();
}
' The following example displays the location of the form in screen coordinates
' on the caption bar of the form.
Private Sub Form1_Move(sender As Object, e As System.EventArgs) Handles MyBase.Move
    Me.Text = "Form screen position = " + Me.Location.ToString()
End Sub

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.

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

適用於

另請參閱