What is a type library?- A file or component within another file that contains standard descriptions of exposed objects, properties, and methods.
- A type library contains a binary description of an interface exposed by a COM-component. In this sense, they contain the same information that is contained in an IDL (Interface Definition Language) file.
- It is a binary file.
- It stores the information about a COM or DCOM objects, properties and methods.
- It invokes the interface methods.
- It provides automatic cross-apartment, cross-process and cross-machine for describing the interfaces.