Goot catch. Maybe is a good idea that this event should return false or true. In case of false the sorting should be not applied. Will consider this to be included, but I do not promiese.

Regards

Tony

i have subgrid and want disable sorting main grid while subgrid is expanded.

Is there a way to stop sorting in onSortCol event?

onSortCol: function(index,colindex,sortorder){
  if(my_condtion){
     //cancel sorting

  }

    //do sorting
}