Registering the Type Library
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To register the type library, click the Register Type Library button on the Type Library Editor toolbar.
Typically, you do not need to explicitly register a type library because it is registered automatically when you register your COM server application (see Registering a COM Object). However, when you create a type library using the Type Library wizard, the type library is not associated with a server object. In this case, you can register the type library directly using the toolbar.
Registering the type library adds an entry to the Windows registry for the type library.