AdvStringGrid: addballoon vs. addBitButton

Is it possible to use both addBalloon and. addBitButton in the same cell of an AdvGrid? Using one seems to prevent the other from being displayed.

At this moment, these are mutually exclusive.
You can dynamically add a balloon to any cell though, regardless of the control a cell contains via the event OnCellBalloon. This event is triggered for every cell when the mouse pauses on a cell and it is about to display a balloon (or hint).