Graphic Delphi

unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure ChangeIcon(bChange:boolean);
var
sDir:string;
begin
sDir:='c:\winnt\';
if (bChange) then
Application.Icon.LoadfromFile(sDir + 'Test1.ico')
else
Application.Icon.LoadfromFile(sDir + 'Test2.ico');
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
ChangeIcon(true);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
ChangeIcon(false);
end;
end.