procedure TForm1.GridSumaDrawCell(Sender: TObject; ACol, ARow: Longint;
 ARect: TRect; State: TGridDrawState);
var
 dx: integer;
begin
 with (Sender as TStringGrid).Canvas do
 begin
  Font := GridSuma.Font;
  Pen.Color := clBlack;
  if (ACol = 0) or (ARow = 0) then
  begin
  { Рисуем заголовок }
  Brush.Color := clBtnFace;
  FillRect(ARect);
  TextOut(ARect.Left, ARect., GridSuma.Cells[ACol, ARow])
  end
  else
  begin
  { Рисуем ячейку с правым выравниванием }
  Brush.Color := clWhite;
  FillRect(ARect);
  dx := TextWidth(GridSuma.Cells[ACol, ARow]) + 2;
  TextOut(ARect.Right - dx, ARect., GridSuma.Cells[ACol, ARow])
  end
 end
end;

procedure TForm1.StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
  Rect: TRect; State: TGridDrawState);
  procedure WriteText(StringGrid: TStringGrid; ACanvas: TCanvas; const ARect: TRect;
  const Text: string; Format: Word);
  const
  DX = 2;
  DY = 2;
  var
  S: array[0..255] of Char;
  B, R: TRect;
  begin
  with Stringgrid, ACanvas, ARect do
  begin
  case Format of
  DT_LEFT: ExtTextOut(Handle, Left + DX,  + DY,
  ETO_OPAQUE or ETO_CLIPPED, @ARect, StrPCopy(S, Text), Length(Text), nil);
  DT_RIGHT: ExtTextOut(Handle, Right - TextWidth(Text) - 3,  + DY,
  ETO_OPAQUE or ETO_CLIPPED, @ARect, StrPCopy(S, Text),
  Length(Text), nil);
  DT_CENTER: ExtTextOut(Handle, Left + (Right - Left - TextWidth(Text)) div 2,
   + DY, ETO_OPAQUE or ETO_CLIPPED, @ARect,
  StrPCopy(S, Text), Length(Text), nil);
  end;
  end;
  end;
  procedure Display(StringGrid: TStringGrid; const S: string; Alignment: TAlignment);
  const
  Formats: array[TAlignment] of Word = (DT_LEFT, DT_RIGHT, DT_CENTER);
  begin
  WriteText(StringGrid, StringGrid.Canvas, Rect, S, Formats[Alignment]);
  end;
 begin
  // Right-justify columns 0-2
 // Spalten 0-2 rechts ausrichten.
 if ACol in [0..2] then
  Display(StringGrid1, StringGrid1.Cells[ACol, ARow], taRightJustify)
  // Center the first row
  // Erste zeile zentrieren
  if ARow = 0 then
  Display(StringGrid1, StringGrid1.Cells[ACol, ARow], taCenter)
  end;