Registration-free COM/DLL with multiple versions of the same typelib (SxS)

Question

In the question below, has a very nice instruction on how to make a Delphi use ActiveX controls in a registration free manner.

Registration-free COM/DLL?

But I have an additional question - can this also be used to support multiple versions of the same COM-object as independent objects? I think .NET can, but we need it in our Win32 application.

The reason is that we use a third party component, which has only one interface (GUID) but has different behavior (calculations) based on the version of the dll.

Answer 1

It is possible to use multiple versions of a COM/SxS library in the same process by using a separate Activation Context for each version.