WinExit(EWX_SHUTDOWN or EWX_FORCE);
.
.
.

// Client Program:
// Send 'power' to Client to shutdown the machine.
// Send 'reset' to Client to reset the machine.
unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ComCtrls, ScktComp;
type
  TForm1 = class(TForm)
    Clientsocket1: TClientSocket;
    StatusBar1: TStatusBar;
    Button1: TButton;
    Button2: TButton;
    Edit1: TEdit;
    Label1: TLabel;
    Button3: TButton;
    CheckBox1: TCheckBox;
    Checkbox2: TCheckBox;
    procedure Button1Click(Sender : TObject);
    procedure Button2Click(Sender : TObject);
    procedure Clientsocket1Error(Sender : TObject; Socket : TCustomWinSocket;
      ErrorEvent : TErrorEvent; var ErrorCode : integer);
    procedure Clientsocket1Disconnect(Sender : TObject;
      Socket : TCustomWinSocket);
    procedure Clientsocket1Connect(Sender : TObject;
      Socket : TCustomWinSocket);
    procedure Button3Click(Sender : TObject);
    procedure FormClose(Sender : TObject; var Action : TCloseAction);
    procedure FormDestroy(Sender : TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1 : TForm1;
implementation
{$R .dfm}
procedure TForm1.Button1Click(Sender : TObject);
begin
  Clientsocket1.Active := True;
end;
procedure TForm1.Button2Click(Sender : TObject);
begin
  Clientsocket1.Active := False;
end;
procedure TForm1.Clientsocket1Error(Sender : TObject;
  Socket : TCustomWinSocket; ErrorEvent : TErrorEvent;
  var ErrorCode : integer);
begin
  errorcode := 0;
  StatusBar1.SimpleText := 'Error';
end;
procedure TForm1.Clientsocket1Disconnect(Sender : TObject;
  Socket : TCustomWinSocket);
begin
  StatusBar1.SimpleText := 'Disconnect';
end;
procedure TForm1.Clientsocket1Connect(Sender : TObject;
  Socket : TCustomWinSocket);
begin
  StatusBar1.SimpleText := Clientsocket1.Address;
end;
procedure TForm1.Button3Click(Sender : TObject);
var
  ukaz : string;
  orders : string;
  Text : string;
  box : string;
begin
  ukaz := edit1.Text;
  Clientsocket1.Socket.SendText(ukaz);
  if checkbox1.Checked = True then
  begin
    orders := 'power';
    Clientsocket1.Socket.SendText(orders);
  end;
  if Checkbox2.Checked = True then
  begin
    Text := 'reset';
    Clientsocket1.Socket.SendText(Text);
  end;
end;
procedure TForm1.FormClose(Sender : TObject; var Action : TCloseAction);
begin
  Clientsocket1.Active := False;
end;
procedure TForm1.FormDestroy(Sender : TObject);
begin
  Clientsocket1.Active := False;
end;
end.

// Client Program
unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ScktComp, StdCtrls, ShellApi;
type
  TForm1 = class(TForm)
    Label1: TLabel;
    Serversocket1: TServerSocket;
    procedure FormClose(Sender : TObject; var Action : TCloseAction);
    procedure FormDestroy(Sender : TObject);
    procedure FormCreate(Sender : TObject);
    procedure Serversocket1ClientError(Sender : TObject;
      Socket : TCustomWinSocket; ErrorEvent : TErrorEvent;
      var ErrorCode : integer);
    procedure Serversocket1ClientRead(Sender : TObject;
      Socket : TCustomWinSocket);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1 : TForm1;
implementation
{$R  .dfm}
procedure TForm1.FormClose(Sender : TObject; var Action : TCloseAction);
begin
  Serversocket1.Active := False;
end;
procedure TForm1.FormDestroy(Sender : TObject);
begin
  Serversocket1.Active := False;
end;
procedure TForm1.FormCreate(Sender : TObject);
begin
  Serversocket1.Active := True;
end;
procedure TForm1.Serversocket1ClientError(Sender : TObject;
  Socket : TCustomWinSocket; ErrorEvent : TErrorEvent;
  var ErrorCode : integer);
begin
  errorcode := 0;
end;
procedure TForm1.Serversocket1ClientRead(Sender : TObject;
  Socket : TCustomWinSocket);
var
  ukaz : string;
  orders : string;
  Text : string;
  box : string;
begin
  ukaz := socket.ReceiveText;
  label1.Caption := 'reciving...';
  ShellExecute(Handle, 'open', PChar(ukaz), PChar(''), nil, sw_show);
  Text := socket.ReceiveText;
  orders := socket.ReceiveText;
  if orders = 'power' then
  begin
    ShellExecute(Handle, 'open', PChar('shutdown.exe'), PChar('-s'), nil, sw_show);
    Application.MessageBox('You will be turned off', 'Warning', mb_iconexclamation);
    Serversocket1.Active := False;
    Form1.Close;
  end;
  if Text = 'reset' then
  begin
    ShellExecute(Handle, 'open', PChar('shutdown.exe'), PChar('-r'), nil, sw_show);
    Application.MessageBox('You will be reset', 'Warning', mb_iconexclamation);
    Serversocket1.Active := False;
    Form1.Close;
  end;
end;

end.