Windows快速关机与重启

#include <windows.h>

int WINAPI WinMain( __in HINSTANCE hInstance, __in_opt HINSTANCE hPrevInstance, __in_opt LPSTR lpCmdLine, __in int nShowCmd )
{
    int SE_SHUTDOWN_PRIVILEGE = 0x13;
    typedef int (WINAPI *PFNRtlAdjustPrivilege)( INT, BOOL, BOOL, BOOL* );
    typedef int (WINAPI *PFNZwShutdownSystem)( INT );

    HMODULE hModule = LoadLibrary( TEXT("ntdll.dll") );
    if( hModule != NULL)
    {
        PFNRtlAdjustPrivilege pfnRtlAdjustPrivilege = (PFNRtlAdjustPrivilege)GetProcAddress( hModule, "RtlAdjustPrivilege" );
        PFNZwShutdownSystem pfnZwShutdownSystem = (PFNZwShutdownSystem)GetProcAddress( hModule, "ZwShutdownSystem" );
        if( pfnRtlAdjustPrivilege != NULL &&
            pfnZwShutdownSystem != NULL )
        {
            BOOL bEnabled = 0;
            int nResult = pfnRtlAdjustPrivilege( SE_SHUTDOWN_PRIVILEGE,
                                              TRUE, TRUE, &bEnabled );
            if( nResult == 0xC000007C )
            nResult = pfnRtlAdjustPrivilege( SE_SHUTDOWN_PRIVILEGE,
                                          TRUE, FALSE, &bEnabled );
            nResult = pfnZwShutdownSystem( 0 );
            //快速关闭系统 = 0;
            //快速重启 = 1;
            //快速关机 = 2;
        }
    }
}