private void OnContextMenuShowing(object sender, Mono.WebBrowser.ContextMenuEventArgs e)
{
HtmlElementEventHandler eh = (HtmlElementEventHandler) Events[ContextMenuShowingEvent];
if (eh != null) {
HtmlElementEventArgs ev = new HtmlElementEventArgs ();
eh (this, ev);
if (ev.ReturnValue) {
owner.OnWebHostContextMenuShown (sender, e);
}
}
}