Hi Ken..

Interface inheritance is just that, inheriting the interface. What is the interface? The collection of PEM's. In Visual Basic, when you implement an interface, you MUST implement all of the interface. That is, you must implement all of the properties, methods, and so forth.

Interface inheritence has nothing to do with functionality. It is all about adhereing to a contract. As far as functionality goes, that is up to the class that implements the defined interface.

VFP, in its current form, does not support the definition of interfaces. VFP 7 will have this ability.

This is how the COM world operates. This is yet another instance of how VFP has been off the beaten path for some time...

HTH.. For more assistance on what interface inheritance is, check out the VB help docs...