[NumLock]

Код:

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  FXMLHTTP: Variant;
begin
  FXMLHTTP:=CreateOleObject('Microsoft.XMLHTTP');
  FXMLHTTP.open('HEAD', 'http://www.delphisources.ru/forum/images/misc/logo_ds_forum.gif', False);
  FXMLHTTP.send('');
  Memo1.Text:=FXMLHTTP.getResponseHeader('Content-Type');
end;

end.