unit3.~pas

转发一个用Delphi7编写的网络即时通讯示例

unit Unit3;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm3 = class(TForm)
    Edit1: TEdit;
    Label1: TLabel;
    Button1: TButton;
    Button2: TButton;
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Edit1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form3: TForm3;

implementation
 uses unit1,unit2;
{$R *.dfm}

procedure TForm3.Button2Click(Sender: TObject);
begin
close;
end;

procedure TForm3.Button1Click(Sender: TObject);
begin
form1.TcpClient1.RemoteHost:=form2.edit1.Text;
form1.TcpClient1.RemotePort:=form2.edit2.Text;
form1.tcpclient1.Connect;
if form1.tcpclient1.Connected then
begin
form1.tcpclient1.Sendln(edit1.Text);
end;
form1.memo2.Lines.Add(edit1.Text);
edit1.Text:='';
form1.tcpclient1.Disconnect;
close();
end;

procedure TForm3.FormCreate(Sender: TObject);
begin
edit1.Text:='请在此处输入你想要发送的信息...';
end;

procedure TForm3.Edit1Click(Sender: TObject);
begin
edit1.Text:='';
end;

end.