[Zope] subclassing across products?

[Ingo Assenmacher]

Hi all!

I have developed a container ZClass. Within I created another ZClass which
presents a meta-class for file-uploads.
Now there is the case that I still want to upload diffenrent things and let
them be described by an extended meta-class object.
I have developed another product which uses services from the upload product.
There I intended to create an extended ZClass derived from the meta-class. But
unfortunately the BaseClass listview does not allow to select classes from my
other product!

This is what I have:

Product A
| class 1 (container for class 2 objects)
| class 2 (additional information objects)

and this is what i want:

Product B
| class 3 (subclass of class 2, additional properties)


There seems to be no way to subclass from class 2 here, is there?
Can this be done, and if, how?


Regards, Ingo

------------------------------------------