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Can we fully control the sort order, eg. on a click on the column C heading, sort by C, then D, then A, then ...

Can we fully control the sort order, eg. on a click on the column C heading, sort by C, then D, then A, then B? We'd want to fully specify the sort order for each column header in many cases, rather than relying on default behavior.

You can cancel default sort action by returning false from onColumnSort event handler (setOnColumnSort(func)). Example:
mygrid.setOnColumnSort(function(colInd,gridObj){
if(colInd==1)
return false;
else
return true;
}) � cancels sorting for column with index 1. Thus you can do whatever you need inside this event handler and then set sort image state with method mentioned in previous point.