When I click on the same PlusMinusCell a SECOND time, the ggc does not raise a TableControlMouseDown or TableControlCurrentCellActivated event. That event is raise the first time I clicked on a cell. Also, when I click on the captionsummarytext cell that is adjacent to the PlusMinusCell, none of these two events are raise because the ggc thinks that the PlusMinusCell and the adjacent CaptionSummaryText cell are the same.