Event called while the background of cell within the column is being painted and doCustom is included in DrawingOptions property.

property OnDrawBackground: TNxDrawCellEvent read FOnDrawBackground write FOnDrawBackground;

Example

procedure TForm1.ButtonColumnDrawBackground(Sender: TObject; ACol, ARow: Integer; CellRect: TRect; State: TNxCellPaintingState);
begin
  with NextGrid61.Canvas do
  begin
    Brush.Color := clBtnFace;
    FillRect(CellRect);
    if csPressed in State then
      Frame3D(NextGrid61.Canvas, CellRect, clBtnShadow, clBtnHighlight, 1)
    else
      Frame3D(NextGrid61.Canvas, CellRect, clBtnHighlight, clBtnShadow, 1);
  end;
end;