显示Windows版本号

实现效果：

　　

知识运用：

　　PaintDesktopVersion键

实现代码：

        private void button1_Click(object sender, EventArgs e)
        {
            RegistryKey rk;
            rk = Registry.CurrentUser;
            rk = rk.CreateSubKey("Control Panel\Desktop");
            rk.SetValue("PaintDesktopVersion",0);
            MessageBox.Show("设置成功! 请刷新桌面");
        }
        private void button2_Click(object sender, EventArgs e)
        {
            RegistryKey rk;
            rk = Registry.CurrentUser;
            rk = rk.CreateSubKey("Control Panel\Desktop");
            rk.SetValue("PaintDesktopVersion", 1);
            MessageBox.Show("设置成功！请刷新桌面");
        }