Use System.Runtime.InteropServices.ComTypes.LIBFLAGS instead.
The type library describes controls, and should not be displayed in type browsers intended for nonvisual objects.
The type library exists in a persisted form on disk.
The type library should not be displayed to users, although its use is not restricted. Should be used by controls. Hosts should create a new type library that wraps the control with extended properties.
The type library is restricted, and should not be displayed to users.