Lire la date de modification d'un fichier

function GetMod if yDate(FileName:String):TDateTime;
var
h: THandle;
Struct: TOFSTRUCT;
lastwrite: integer;
t: TDateTime;

begin
h:=OpenFile(PChar(FileName), Struct, OF_SHARE_DENY_NONE);
try
if h<>HFILE_ERROR then
begin
lastwrite:=FileGetDate(h);
Result:= FileDateToDateTime(lastwrite);
end;
finally
_lclose(h);
end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
if Opendialog1.Execute then
begin
Label1.Caption:=FormatDateTime('dddd, d. mmmm yyyy hh:mm:ss',
GetMod if yDate(Opendialog1.FileName));
end;
end;