how to use "inproc" for connecting C# and C++ (how to share context?)

I want to connect c++ and c# side of my application using "inproc" binding.To do that I need to share context somehow, because both c# and c++parts should use the same context.How can I do that? I'm using official c++ and c# bindings.

I.e. on c# side i need ZeroMQ.ZmqContext.

And on c++ side i need zmq::context_t.

And both instances should point to the same context so I can use "inproc".