>>That said, in my opinion, a framework that disallows you from using your own classes within the context of that framework is not a very good one. I don't know that Promatrix does this and I would be very surprised if it did. I would expect that you can use Promatrix AND your classes both and get the advantages of the Promatrix framework and the use of your custom classes. Of cours you may need to modify your classes to work within the framework.
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>Do you know of any particular VFP frameworks that have this problem?
Bret,

None of the frameworks that I am aware of prevent using your own classes. Most of them encourage you to subclass their classes to make your changes, thus making updates to the framework much easier, just replace their class libs.