What is the right way to use placeSortArrow() in dataGrids ?
The documentation says :" Draw the sortArrow graphic on the
column that is the current sortIndex."
But now, how to set the "curernt Sort Index", there is
actually no property for that.
I tried also to set an undocumented dataGrid attribute -
sortColumn - to be the column on which I do the sort, then to call
placeSortArrow(), but nothing is drawn...
Does somebody know how to use this function ?