unknwn.h header

This header is used by Component Object Model (COM). For more information, see:

• Component Object Model (COM)

unknwn.h contains the following programming interfaces:

Interfaces

IClassFactory The IClassFactory interface enables a class of objects to be created.
IUnknown Enables clients to get pointers to other interfaces on a given object through the QueryInterface method, and manage the existence of the object through the AddRef and Release methods.