[C++-sig] CXX : getting a C++ object

[Benjamin Golinvaux]

Hello

I would like to wrap a small C++ library using CXX.

I would like to know how I can extract the C++ instance
from a PyObject passed to a function. Can I assume, after
a correct type check, that I can safely downcast the PyObject
? (or using dynamic_cast ?)

If I can't (or don't want to) use dynamic_cast , what could 
then be the best way to test that a PyObject is actually
from a wrapped C++ "python type" class ?  (sorry I'm a beginner
in the Python C API)

Thanks for your help

Benjamin Golinvaux 

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