Как выключить удалённый компьютер?

{-----------------------------------------------------------------------------
 Unit Name: formClient
 Author: Stewart Moss
 Creation Date: 27 February, 2002 (16:30)
 Documentation Date: 27 February, 2002 (16:30)
 Version 1.0
 -----------------------------------------------------------------------------
 Description:
 This is to demonstrate shutting down a machine over the network.
 ** Tobias R. requests the article "How to send a shutdown command in a network?" **
 This is not really what you want. I think you are looking for some kind
 of IPC or RPC command. But this will work. Each machine needs to run
 a copy of this server.
 It uses the standard delphi ServerSocket found in the "ScktComp" unit.
 Create a form (name frmClient) with a TServerSocket on it (name ServerSocket)
 set the Port property of ServerSocket to 5555. Add a TMemo called Memo1.
 It listens on port 5555 using TCP/IP.
 It has a very simple protocol.
 Z = Show message with "Z"
 B = Beep
 S = Shutdown windows
 Run the program.. Then from the command prompt type in
 "telnet localhost 5555". Type in one of the three commands above
 (all in uppercase) and the server will respond.
 Copyright 2002 by Stewart Moss. All rights reserved.
-----------------------------------------------------------------------------}

unit formClient;
interface
uses
 Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
 ScktComp, StdCtrls;
type
 TfrmClient = class(TForm)
  ServerSocket: TServerSocket;
  Memo1: TMemo;
  procedure ServerSocketClientRead(Sender: TObject;
  Socket: TCustomWinSocket);
  procedure FormCreate(Sender: TObject);
  procedure FormClose(Sender: TObject; var Action: TCloseAction);
 private
  { Private declarations }
 public
  { Public declarations }
 end;
var
 frmClient: TfrmClient;
implementation
{$R *.DFM}
procedure TfrmClient.ServerSocketClientRead(Sender: TObject;
 Socket: TCustomWinSocket);
var
 Incomming: string;
begin
 // read off the socket
 Incomming := Socket.ReceiveText;
 memo1.Lines.Add(incomming);
 if Incomming = 'S' then // Shutdown Protocol
  ExitWindowsEx(EWX_FORCE or EWX_SHUTDOWN, 0);
 if Incomming = 'B' then // Beep Protocol
  Beep;
 if Incomming = 'Z' then // Z protocol
  showmessage('Z');
end;
procedure TfrmClient.FormCreate(Sender: TObject);
begin
 ServerSocket.Active := true;
end;
procedure TfrmClient.FormClose(Sender: TObject; var Action: TCloseAction);
begin
 ServerSocket.Active := false;
end;
end.

Взято с Delphi Knowledge Base: http://www.baltsoft.com/

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