[C++-sig] Data members and inheritance

[David Abrahams]

Kerim Borchaev <warkid at hotbox.ru> writes:

> Hello.
>
> I'm trying to export a class's data member that's declared in parent
> class. But I can't. Please explain me what am I doing wrong.
>
> Here's the test code:
>
> //hello.cpp
> #include <boost/python.hpp>
> using namespace boost::python;
>
> struct t {
>     float a;
> };
>
> struct xt : t {
> };
>
> BOOST_PYTHON_MODULE(hello)
> {
>     class_<xt>("xt", no_init)
>         .def_readonly("a", &xt::a);
> }

You need to explicitly cast your member pointer to the right type:

         .def_readonly("a", (float xt::*)&xt::a);

I've added a fix to the CVS which makes this unneccessary.


-- 
                       David Abrahams
   dave at boost-consulting.com * http://www.boost-consulting.com
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