Each type library is registered as a separate entity even if they're in the same .dll

The only way I'd know how to do it is to parse through HKCR hive and grab all registered dll names that have the same name as the open one and then do a lookup on the CLSID to find out what the type library is.

Sounds like an awful mess to me. Plus, I'm not sure how really useful that would be for most people.

Of course, there's probably a much simpler way to do it, but I certainly don't know what it would be.
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Stevie