delphi tcp/ip IdTCPClient1实例一

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, IdBaseComponent, IdComponent, IdTCPConnection,
IdTCPClient;

type
TForm1 = class(TForm)
    IdTCPClient1: TIdTCPClient;
    Button1: TButton;
    Edit1: TEdit;
    Edit2: TEdit;
    Label1: TLabel;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
private
    { Private declarations }
public
    { Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
   IdTCPClient1.Host:='192.168.1.126';
   IdTCPClient1.Port:=168;

     IdTCPClient1.Connect();

      if edit1.Text='begin' then
      begin
      IdTCPClient1.WriteLn('begin');
       showmessage(IdTCPClient1.ReadLn());
        end;
      if edit1.Text='end' then
      IdTCPClient1.WriteLn('end');
      if edit1.Text='qx' then
      IdTCPClient1.WriteLn('qx');

      IdTCPClient1.Disconnect;

end;

procedure TForm1.Button2Click(Sender: TObject);
begin
    IdTCPClient1.Disconnect;
end;

end.

源码下载：http://download.csdn.net/source/1261880