procedure TForm1.StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
Rect: TRect; State: TGridDrawState);
begin
with StringGrid1 do
begin
if (ACol = 3) and (ARow = 3) then
begin
Canvas.Brush.Color := clRed;
Canvas.FillRect(Rect);
Canvas.Font.Name := 'Courier New';
Canvas.TextOut(Rect.Left + 2, Rect.Top + 2, Cells[ACol, ARow]);
end;
end;
end;