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                            //Win2000&WinNT实现的代码
      HANDLE hToken;
      TOKEN_PRIVILEGES tkp;
      if (OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGESTOKEN_QUERY, &hToken))
      {
          LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, &tkp.Privileges[0].Luid);
          tkp.PrivilegeCount = 1;
          tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
          AdjustTokenPrivileges(hToken, FALSE, &tkp, 0, (PTOKEN_PRIVILEGES)NULL, 0);
          ExitWindowsEx(EWX_SHUTDOWNEWX_POWEROFF, 0);
      }
      //Win9x实现的代码
      ExitWindowsEx(EWX_SHUTDOWNEWX_POWEROFF, 0);