c# 隐藏和显示桌面 屏蔽热键 代码 //隐藏桌面 [System.Runtime.InteropServices.DllImport("user32.dll")] public static extern IntPtr FindWindow(string strClassName, string strWindowName); [System.Runtime.InteropServices.DllImport("user32.dll")] public static extern int ShowWindow(IntPtr h