ActiveX to COM-Interop
Third-party ActiveX references can be converted to COM-Interop code
wrappers to provide the same behavior and interaction in the .NET platform,
saving the original library to be accessed through a special wrapper interface.
VBUC introduced the ability to map ActiveX references to .NET intrinsic
libraries. (See “Extensibility Model” and
“Optional Third-Party Library Mappings” sections below)