According to a quick look on Google, you have to use LoadTypeLibEx (with regkind set to NONE) to load the DLL and get its ITypeLib interface.

If you just want to make sure that the DLL is registered, maybe just use regsvr.exe or the RegisterType call.

In reply to Re: Extract CLSID from unregistered DLL by Corion
in thread Extract CLSID from unregistered DLL by reinaldo.gomes

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