就是写一个类继承WebBrower控件，重写

 protected   override   void   WndProc(ref   System.Windows.Forms.Message   m) 方法

class WebBrowserClass : System.Windows.Forms.WebBrowser 

    {

        protected override void WndProc(ref   System.Windows.Forms.Message m)

        {

            switch (m.Msg)

            {

                case 0x201:   //   WM_LMOUSEBUTTON 

                case 0x204:

                case 0x207:

                case 0x21:

                    base.DefWndProc(ref   m);

                    return;

            }

            base.WndProc(ref   m);

        } 

    }