[C++-sig] return boost::shared_ptr<some internal>

I have a class that has a member something like this: class A { boost::shared_ptr<B> b; }; boost::shared_ptr<B> get_b (A const& ...) { return A.b; } where class B is already exposed to python in a different module. I tried to provide access to the internal member A.b: class_<A> ... .add_property ("b", &A::get_b) It seems that attempting to provide access to this internal member fails, with a message about no conversion from c++ type blah blah. The c++ type represented by this internal state is already exposed in a different python module, which has also been imported into python.

From what I can gather from ancient messages on the web, this usage just isn't going to work.

Any thoughts?