Class: TEgFireGridColumn
property TitleImageIndex: Integer default -1;Icon shown in the column’s title, as an index into the grid’s Images; -1 (the
default) shows none. It sits at TitleImageAlignment,
sized to fit the title; a column too narrow shows none.
A click on the icon fires OnTitleImageClick
instead of OnTitleClick, and does not change the sort; the
pointer over it shows the grid’s ClickableCursor.
An OnBeforeDrawTitle
handler can change it for one title.