⤷ Set date/time of the file

Use FileSetDate function for changing date and time of the file. FileOpen functions returns handle of the file. Result of this function is modified by conversions functions.

procedure TForm1.Button1Click(Sender: TObject);
begin
  if OpenDialog1.Execute then
    Edit1.Text:=OpenDialog1.FileName;
end;

procedure TForm1.Button2Click(Sender: TObject);
var
  HFile: Word;
  MyDate: TDateTime;
  MyDate2: Integer;
begin
  HFile:=FileOpen(Edit1.Text, fmOpenWrite);
  MyDate:=StrToDateTime(Edit2.Text);
  MyDate2:=DateTimeToFileDate(MyDate);
  FileSetDate(HFile, MyDate2);
  FileClose(HFile);
end;
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