Class: TEgDBGridEx
property OnTitleCellClick: TEgDBGridTitleCellClick;Fired on every column title click, passing the clicked
Column, regardless of whether the click actually changed
the sort state. Fires after OnSortChange
(when that event also fires). Use this for title-click behavior that
should happen on every click (including a re-click on the already-sorted
column); use OnSortChange for behavior that should only
happen when the sort actually changes. Also available at column level
(see TEgColumn.OnTitleCellClick);
when both are assigned, the grid-level handler runs first. See TEgDBGridTitleCellClick.