Mirror

How to limit the number of characters per line and the number of lines in a TMemo (2) (Views: 100)


Problem/Question/Abstract:

Is there a way to place a maximum number of lines in a TMemo?

Answer:

procedure TForm1.Memo1Change(Sender: TObject);
var
  i: Integer;
  s: string;
begin
  i := Length(Memo1.Lines.Text);
  {Limit the number of lines to 3}
  if Memo1.Lines.Count > 3 then
  begin
    s := Memo1.Lines.Text;
    Delete(s, i, 1);
    {Remove line wrap}
    i := Length(s);
    while (Ord(s[i]) = 10) or (Ord(s[i]) = 13) do
    begin
      Delete(s, i, 1);
      i := Length(s);
    end;
    Memo1.Lines.Text := s;
    {posistion cursor at end of memo}
    Memo1.SelStart := Length(s);
    Memo1.SelLength := 0;
    ShowMessage('Over Max Lines');
  end;
end;

<< Back to main page