Get a count of the add-in functions in the library
[C++]
int GetFnCount();
A count of the number of add-in functions contained in the library.
Header: xllplus.h
CXllApp Class 
					  | CXllApp Methods			 
					  | CXllApp::GetStartFnPosition()			 
					  | CXllApp::GetNextFnAssoc()