how to stop copying values over readonly fields

Suite and Optimus Suite 5
#1

Even if a column is readonly, we are able to paste values over it.How can we avoid this

#2

Can be done by next code modification

dhtmlxgrid_selection.js , line 361

    }else
          if (!ed.isDisabled()) //this line need to be added
                ed[ ed.setImage ? “setLabel” : “setValue” ]( serialized[ k ][ l++ ] );