Синхронизация завершения работы Windows

Code:

function TimedShutDown(Computer: string; Msg: string; Time: Word; Force: Boolean; Reboot: Boolean): Boolean;

var

  rl: Cardinal;

  hToken: Cardinal;

  tkp: TOKEN_PRIVILEGES;

begin

  //get user privileges to shutdown the machine, we are talking about win nt and 2k here

if not OpenProcessToken(GetCurrentProcess, TOKEN_ADJUST_PRIVILEGES or TOKEN_QUERY, hToken) then

    ShowMessage('Cannot open process token.')

  else

  begin

    if LookupPrivilegeValue(nil, 'SeShutdownPrivilege', tkp.Privileges[0].Luid) then

    begin

      tkp.Privileges[0].Attributes := SE_PRIVILEGE_ENABLED;

      tkp.PrivilegeCount := 1;

      AdjustTokenPrivileges(hToken, False, tkp, 0, nil, rl);

      if GetLastError <> ERROR_SUCCESS then

       ShowMessage('Error adjusting process privileges.');

    end

  else

    ShowMessage('Cannot find privilege value.');

  end;

  Result := InitiateSystemShutdown(PChar(Computer), PChar(Msg), Time, Force, Reboot)

end;

//Start shut down

procedure TForm1.Button1Click(Sender: TObject);

begin

  if not TimedShutDown('\\computername', 'you have to shutdown', 30, true, true) then

    ShowMessage('function failed...');

end;

//Abort shut down

procedure TForm1.Button2Click(Sender: TObject);

begin

  AbortSystemShutdown('\\computername');

end;