WINDOWS XP 自动关机

#include <powrprof.h>
#pragma comment(lib,"PowrProf.lib")


// 该函数没有InitiateSystemShutdown强大,主要是只能关本机
// ExitWindowsEx( EWX_FORCE | EWX_POWEROFF, 0 );
// 此函数为休眠, 但已不推荐
// SetSystemPowerState(FALSE,TRUE);
BOOL PowerManage( int nOpType, UINT nSecs )
{
    HANDLE hToken;
    TOKEN_PRIVILEGES tkp;

    memset( &tkp, 0, sizeof( TOKEN_PRIVILEGES ) );

    // 获得进程访问令牌的句柄
    if ( !OpenProcessToken( GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken ) )
    {
        ::MessageBox( NULL, TEXT( "无法获得访问句柄" ), TEXT( "错误" ), MB_OK );
        return FALSE;
    }

    // 查看系统权限的特权值
    if ( !LookupPrivilegeValue( NULL, SE_SHUTDOWN_NAME, &tkp.Privileges[0].Luid ) )
    {
        ::MessageBox( NULL, TEXT( "无法获得特权值" ), TEXT( "错误" ), MB_OK );
        return FALSE;
    }

    // 使能该特权
    tkp.PrivilegeCount = 1;
    tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

    if ( !AdjustTokenPrivileges( hToken, FALSE, &tkp, 0, ( PTOKEN_PRIVILEGES )NULL, 0 ) )
    {
        ::MessageBox( NULL, TEXT( "无法使能特权" ), TEXT( "错误" ), MB_OK );
        return FALSE;
    }


    if ( nOpType == 0 && \
            !InitiateSystemShutdown( NULL, TEXT( "即将关机!!" ), nSecs, TRUE, FALSE ) )
    {
        ::MessageBox( NULL, TEXT( "关机操作失败" ), TEXT( "错误" ), MB_OK );
        goto err_exit;
    }
    else if ( nOpType == 1 && \
              !InitiateSystemShutdown( NULL, TEXT( "即将重启!!" ), nSecs, TRUE, TRUE ) )
    {
        ::MessageBox( NULL, TEXT( "重启操作失败" ), TEXT( "错误" ), MB_OK );
        goto err_exit;
    }
    else if ( nOpType == 2 && !SetSuspendState( FALSE, TRUE, FALSE ) )
    {
        ::MessageBox( NULL, TEXT( "待机操作失败" ), TEXT( "错误" ), MB_OK );
        goto err_exit;
    }
    else if ( nOpType == 3 && !SetSuspendState( TRUE, TRUE, FALSE ) )
    {
        ::MessageBox( NULL, TEXT( "休眠操作失败" ), TEXT( "错误" ), MB_OK );
        goto err_exit;
    }

    // 恢复此特权使能情况
    tkp.Privileges[0].Attributes = 0;
    AdjustTokenPrivileges( hToken, FALSE, &tkp, 0, ( PTOKEN_PRIVILEGES )NULL, 0 );
    return TRUE;

err_exit:

    tkp.Privileges[0].Attributes = 0;
    AdjustTokenPrivileges( hToken, FALSE, &tkp, 0, ( PTOKEN_PRIVILEGES )NULL, 0 );
    return FALSE;
}