procedure TextOutVertical(var bitmap: TBitmap; x, y: Integer; s: string);
var
  b1, b2: TBitmap;
  i, j: Integer;
begin
  with bitmap.Canvas do
  begin
    b1 := TBitmap.Create;
    b1.Canvas.Font := lpYhFont;
    b1.Width := TextWidth(s) + 1;
    b1.Height := TextHeight(s) + 1;
    b1.Canvas.TextOut(1, 1, s);

    b2 := TPackedBitmap.Create;
    b2.Width := TextHeight(s);
    b2.Height := TextWidth(s);
    for i := 0 to b1.Width - 1 do
      for j := 0 to b1.Height do
        b2.Canvas.Pixels[j, b2.Height + 1 - i] := b1.Canvas.Pixels[i, j];
    Draw(x, y, b2);
    b1.Free;
    b2.Free;
  end
end;