Type Description Interfaces

Type description interfaces provide a way to read and bind to the descriptions of objects in a type library. These descriptions are used by ActiveX clients when they browse, create, and manipulate ActiveX (Automation) objects.

The type description interfaces described in this chapter include:

• ITypeLib —Retrieves information about a type library.
• ITypeLib2 — Allows ITypeLib to cast to an ITypeLib2 in performance-sensitive cases.
• ITypeInfo — Reads the type information within the type library.
• ITypeInfo2 —Allows ITypeInfo to cast to an ITypeInfo2 in performance-sensitive cases.
• ITypeComp — Creates compilers that use type information.

This chapter also describes functions for loading, registering, and querying type libraries.