如何在程序中关闭（suspend）Pocekt PC？

Question

方法1：虚拟关机键
::keybd_event(VK_OFF, 0, 0, 0);
::keybd_event(VK_OFF, 0, KEYEVENTF_KEYUP, 0);

方法2：调用未公开函数PowerOffSystem()
extern "C" __declspec(dllimport) void PowerOffSystem();