You can't, just ignore the event when it happens if you don't want it
I would like to add a KeyPressed handler to the selected Item of a CustomListView and remove it when the selection changes.
I don't know if keeping the handlers active will create problems (maybe the performance hit will be insignificant).
[BTW I was hasty, since the first attempt was to add that event to the CLV but it was not the ideal solution and, at the moment, I was unable to add it to the single Item]