Is there a currentCard Property?

[Len Morgan]

I've got an application that has a stack with several cards that are 
selected by a selection from a combobox (which is in a toolbar group on 
all cards).  I need to update the information on the currently visible 
card when a new card is selected from the combobox or when the current 
record is changed (in another group on all cards).  Since this stack may 
end up being 50+ cards with a lot of data (from a database BTW), I don't 
want to update every card every time new data is selected.

Is there a currentCard property or function I can use?  I'm going to 
have an updateFields handler on each card that will update only the data 
on that card.

Any ideas?

Thanks!

Len Morgan