Release 10.1A: OpenEdge Development:
ADM Reference

instanceOf

Takes an object type as input and resolves the query inheritance as defined in the Dynamics Repository.

Location: smart.p

Parameters:

INPUT pcObjectType AS CHARACTER

The object type for which you want to resolve the inheritance.

Notes:

This function is used only in a Progress Dynamics™ environment.
Returns TRUE if the instance inherits from the requested class anywhere in the hierarchy.