unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Label1: TLabel;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

function GetFileDate(TheFileName: string): string; // эта строка необязательна

var
  Form1: TForm1;

implementation

{$R *.dfm}

function GetFileDate(TheFileName: string): string;
var
  FHandle: integer;
begin
  FHandle := FileOpen(TheFileName, 0);
  result := DateTimeToStr(FileDateToDateTime(FileGetDate(FHandle)));
  FileClose(FHandle);
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
  label1.Caption := GetFileDate('C:Borland.exe');
end;
end.