Which editor specifically are you referring to?  Not all of the controls implement an event manager, though the ones that derive from UltraGridBase (i.e. UltraGrid, UltraDropDown) happen to do so, as well as some of the larger components.  With the other controls, like the UltraComboEditor (which I think you are referring to) do not implement this.  What you could do is simply keep a flag yourself indicating whether or not you should handle the event.

-Matt