procedure TForm1.FormCreate(Sender: TObject);
var
DialogUnitsX : LongInt;
PixelsX : LongInt;
i : integer;
TabArray : array[0..4] of integer;
begin
Memo1.WantTabs := true;
DialogUnitsX := LoWord(GetDialogBaseUnits);
PixelsX := 20;
for i := 1 to 5 do begin
TabArray[i - 1] :=
((PixelsX * i ) * 4) div DialogUnitsX;
end;
SendMessage(Memo1.Handle,
EM_SETTABSTOPS,
5,
LongInt(@TabArray));
Memo1.Refresh;
end;