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I created a VB.NET DLL file which I am using in an unmanaged C++ project.
When I try to create an object of the class, I am getting an error:
cannot instantiate abstract class
Why would my class be abstract? How can I modify it so that it won’t be abstract?
That’s not how it works, you have to write COM code in C++ to use it. Take a good look at the #import directive and the smart pointers it creates.