class ClickPanel extends System.Windows.Forms.Panel {
    override protected function OnMouseUp (e : MouseEventArgs) {
      super.OnMouseUp(e);
      MessageBox.Show("Mouse Up at: "+e.X+", "+ e.Y);
    } 
  } 

  private var topPanel: ClickPanel;

  topPanel= new ClickPanel;

  Application.Run(new MouseUpPkg.MouseUpCls());

People who read this tip also read these tips:

• Applicable Elements for HTML+TIME
• Parent-Last-Child Synchronization
• Printing to the Console
• The Web Service XML Response
• Client-Side vs Server-Side Scripting