type
  TDBGridEhCrack = class(TDBGridEh);

procedure TForm1.DBGridEh1Columns5AdvDrawDataCell(Sender: TCustomDBGridEh; Cell,
  AreaCell: TGridCoord; Column: TColumnEh; const ARect: TRect;
  var Params: TColCellParamsEh; var Processed: Boolean);
begin
  if (Column.Field.IsNull) then
  begin
    //DBGridEh1.DefaultDrawColumnDataCell(Cell, AreaCell, Column, ARect, Params);
    DBGridEh1.DrawColumnDataCellBackground(Cell, AreaCell, Column, ARect, Params);
    TDBGridEhCrack(DBGridEh1).DrawCellDataBackground(Cell.X, Cell.Y, AreaCell.X, AreaCell.Y, Column, ARect,
      Params.State, dgRowSelect in DBGridEh1.Options);
    Processed := True;
  end;
end;