Is it possible to prevent the rollover effect (color change)
from occurring on the AdvancedDataGrid Headers? In DataGrid (which
I know is unrelated), when you set sortableColumns to false, the
rollover effect does not happen, but the same is not true in ADG.
You'd probably have to create your own headerRenderer using
the ADG's headerRenderer property. In your custom renderer,
register your mouse-over listener (might actually be roll-over if
mouse-over doesn't work), and prevent the event from propagating (I
usually do an event.preventDefault() also just to be on the safe
Also...make sure you add your listener with a high priority,
as I believe the hover-over color drawing is done by the grid
itself, which means your listener is likely to get added before the
grid's listener, and thus fire after the grid's listener.