winform代码中

private void webView_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)        {            //播放器Flash添加右键菜单            HtmlElement bfq = webView.Document.GetElementById("CuPlayer");            if (bfq!=null)            {                bfq.MouseDown += new HtmlElementEventHandler(bfq_MouseDown);            }        }        void bfq_MouseDown(object sender, HtmlElementEventArgs e)        {            if (e.MouseButtonsPressed==MouseButtons.Right)            {                cmsControl.Show(e.MousePosition);//弹出右键菜单                return;            }        }