public virtual void WindowClosing(bool isChildWindow, ref bool cancel)
 {
     DWebBrowserEvents2_WindowClosingEvent windowclosingEvent = new DWebBrowserEvents2_WindowClosingEvent(isChildWindow, cancel);
     this.parent.RaiseOnWindowClosing(this.parent, windowclosingEvent);
     cancel = windowclosingEvent.cancel;
 }
 internal void RaiseOnWindowClosing(object sender, DWebBrowserEvents2_WindowClosingEvent e)
 {
     if ((this.WindowClosing != null))
     {
         this.WindowClosing(sender, e);
     }
 }