Point ms = Control.MousePosition; //获取鼠标位置

            this.label2.Text = string.Format("{0}:{1}", ms.X, ms.Y);

            MouseButtons mb=  Control.MouseButtons; //获取鼠标按键

            if (mb == System.Windows.Forms.MouseButtons.Left) this.label3.Text = "Left";

            if (mb == System.Windows.Forms.MouseButtons.Right) this.label3.Text = "Right";

            if (mb == System.Windows.Forms.MouseButtons.Middle) this.label3.Text = "Middle";