Date and time of creation/modification of a file

The function FileAge() returns the date/time stamp of a file. The returned value is an integer number; it has to be converted to Delphi's TDateTime format (a floating point number) before you can use it. You can use the following code to test the functions involved:

procedure TForm1.Button1Click(Sender: TObject);
var
  File_Name: string;
  DateTimeStamp: integer;
  Date_Time: TDateTime;
begin
  File_Name := 'c:\mydocuments\test.doc';
  DateTimeStamp := FileAge(File_Name);
  // FileAge returns -1 if file not found
  if DateTimeStamp < 0 then
    ShowMessage('File not found')
  else begin
    // Convert to TDateTime format
    Date_Time := FileDateToDateTime(DateTimeStamp);
    Label1.Caption := DateToStr(Date_Time);
    Label2.Caption := TimeToStr(Date_Time);
  end;
end;