Правое выравнивание ячеек TStringGrid

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.Top, 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.Top, GridSuma.Cells[ACol, ARow])
    end
  end
end;
 

https://delphiworld.narod.ru/

DelphiWorld 6.0

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, Top + DY,
             ETO_OPAQUE or ETO_CLIPPED, @ARect, StrPCopy(S, Text), Length(Text), nil);
 
         DT_RIGHT: ExtTextOut(Handle, Right - TextWidth(Text) - 3, Top + DY,
             ETO_OPAQUE or ETO_CLIPPED, @ARect, StrPCopy(S, Text),
             Length(Text), nil);
 
         DT_CENTER: ExtTextOut(Handle, Left + (Right - Left - TextWidth(Text)) div 2,
             Top + 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;

Взято с сайта: https://www.swissdelphicenter.ch