This header is used by Component Object Model (COM). For more information, see:
comcat.h contains the following programming interfaces:
Obtains information about the categories implemented or required by a certain class, as well as information about the categories registered on the specified computer.
Provides methods for registering and unregistering component category information in the registry. This includes both the human-readable names of categories and the categories implemented/required by a given component or class.
Enumerates component categories registered in the system.
Enables clients to enumerate through a collection of class IDs for COM classes.
Describes a component category.