unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ScktComp, Buttons, StdCtrls, ExtCtrls;
type
TForm1 =
class(TForm)
ClientSocket1: TClientSocket;
Timer1: TTimer;
Button1: TButton;
BitBtn1: TBitBtn;
ListBox1: TListBox;
ListBox2: TListBox;
procedure ClientSocket1Connect(Sender: TObject;
Socket: TCustomWinSocket);
procedure ClientSocket1Disconnect(Sender: TObject;
Socket: TCustomWinSocket);
procedure ClientSocket1Error(Sender: TObject; Socket: TCustomWinSocket;
ErrorEvent: TErrorEvent;
var ErrorCode: Integer);
procedure Timer1Timer(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure BitBtn1Click(Sender: TObject);
private
{ Private declarations }
public
i:Integer;
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.ClientSocket1Connect(Sender: TObject;
Socket: TCustomWinSocket);
begin
Form1.Caption:='
Connected';
end;
procedure TForm1.ClientSocket1Disconnect(Sender: TObject;
Socket: TCustomWinSocket);
begin
Form1.Caption:='
Disconnected';
end;
procedure TForm1.ClientSocket1Error(Sender: TObject;
Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;
var ErrorCode: Integer);
begin
Errorcode:=0;
end;
procedure TForm1.Timer1Timer(Sender: TObject);
begin
ClientSocket1.Address:='
192.168.0.'+inttostr(i);
Try
ClientSocket1.Open;
if ClientSocket1.Socket.Connected
then begin
ListBox1.Items.Add(ClientSocket1.Host);
ClientSocket1.Close;
end else
ListBox2.Items.Add(ClientSocket1.Address);
finally
ClientSocket1.Close;
i:=i+1;
if i=110
then timer1.Enabled:=False;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
i:=100;
Timer1.Enabled:=true;
end;
procedure TForm1.BitBtn1Click(Sender: TObject);
var
i: Integer;
begin
ListBox1.Clear;
ListBox2.Clear;
For i:=100
to 110
do begin
ClientSocket1.host:='
192.168.0.'+inttostr(i);
Try
ClientSocket1.Open;
Application.ProcessMessages;
if ClientSocket1.Socket.Connected
then
ListBox1.Items.Add(ClientSocket1.Host)
else
ListBox2.Items.Add(ClientSocket1.Host);
ClientSocket1.Close;
except
beep;
end;
end;
end;
end.