隐藏和显示鼠标

        [DllImport("user32.dll", EntryPoint = "ShowCursor")]
        public extern static bool ShowCursor(bool bShow);
        private void button1_Click(object sender, EventArgs e)
        {
            ShowCursor(false);      //鼠标隐藏
        }
        private void button2_Click(object sender, EventArgs e)
        {
            ShowCursor(true);       //鼠标显示
        }