This class implements IUnknown and allows a client to access the information in an object's property pages.
Your class, derived from IPerPropertyBrowsingImpl.
The IPerPropertyBrowsing interface allows a client to access the information in an object's property pages. Class IPerPropertyBrowsingImpl provides a default implementation of this interface and implements IUnknown by sending information to the dump device in debug builds.
If you are using Microsoft Access as the container application, you must derive your class from IPerPropertyBrowsingImpl. Otherwise, Access will not load your control.