IdTcpCli控件怎么用啊？

[ade2003]

IdTcpCli控件怎么用啊？

[xiangzi8]

unit Unit1;

interface

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

type
TForm1 = class(TForm)
IdTcpCli: TIdTCPClient;
Label1: TLabel;
Edit2: TEdit;
edit1: TEdit;
Label2: TLabel;
Button1: TButton;
Edit3: TEdit;
Label3: TLabel;
Button2: TButton;
Edit4: TEdit;
Edit5: TEdit;
Button3: TButton;
procedure Button1Click(Sender: TObject);
procedure IdTcpCliConnected(Sender: TObject);
procedure IdTcpCliDisconnected(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin

IdTcpCli.Host:=edit1.Text ;
IdTcpCli.Port:=StrToInt(Edit2.Text);
try
IdTcpCli.Connect;
// IdTcpCli.SendCmd(edit3.Text);
except
on E: Exception do
begin
MessageBox(Handle, PChar(E.Message), nil, MB_OK or MB_ICONSTOP);
IdTcpCli.Disconnect;
end;
end;


end;

procedure TForm1.IdTcpCliConnected(Sender: TObject);
begin
showmessage('连接成功！');
end;

procedure TForm1.IdTcpCliDisconnected(Sender: TObject);
begin
showmessage('连接断开');
end;

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

procedure TForm1.Button3Click(Sender: TObject);
begin
IdTcpCli.WriteLn(edit3.Text);
end;

end.