COM DispInterface/Event handler question

Hello,

I'm trying to communicate with another application through COM.  The
application's COM interface implements events though a DispInterface.  In
loading the typelib file, LW generates the following:

....
;;   Coclass FOOCtl as F-O-O-Ctl
;;   Interface IFOOCtl as I-F-O-O-CTL
;;     property reader FooActive as GET-FOO-ACTIVE
....
;;   DispInterface _IFooEvents as _I-FOO-EVENTS
;;     method RecordComplete as RECORD-COMPLETE
....

I can make an instance of F-O-O-Ctl, and do a query-interface to get the
interface I-F-O-O-CTL from which I can invoke Get-Foo-Active, but I cannot
get my hands on _I-Foo-Events.

Also, Record-Complete is an event (method) that I wish to handle.  I can
find no documentation or examples for how COM event handlers should work.
I would guess that I would define a function that I hand the
Record-Complete method, but I have no indication of whether that should be
a regular Lisp function or a foreign function.

I'm currently using LW4.2.7

Thanks,

R