[Chicken-users] easyffi c++ passing object pointers

[Dave]

Hello,
How can I take pointers to objects that were created in C++, pass them 
via an entry point, and manipulate them as tinyclos objects? Examples 
exist for using c++ objects that are created by scheme and even pulling 
a pointer from the tinyclos object, but I cannot figure out how to turn 
this around. Here's one of my abortive attempts:

#>!
class ClientApp
{
 public:
 bool ChickenCallin(char *helo);

};
<#
;;; INITIALIZE
(define-entry-point 1
    ((a (pointer <ClientApp>)))
    (int)
    (print "Got client pointer")
    (print a)
    (print (ChickenCallin a "bing"))
    1)


Thanks!