Is there a quick way in VBA to tell if a function used in
a cell formula is a userdefined function? That is, I know
I can load the Excel Functions into an array and then do a
match on the function found in the cell against the array
and check to see if it is in the array. If its not found
(iserror =true) its userdefined. But this means I have to
actually find funtions in formulas to do this? Is there
an easier way to spot userdefined functions in formulas?

Thanks