You may need to create a getter and a setter in your wrapper, and then you can use the "make_function" function to change the CallPolicy when you use create a property. I think you want your call policy to be return_internal_reference<> and that will handle the lifetime correctly. Here is a reference link that that technique:
http://wiki.python.org/moin/boost.python/HowTo#getterandsettermethodsasaproperty There may be an easier solution to your problem, but I know that the technique above will work. Hope this helps, Bill -----Original Message----- From: cplusplus-sig-bounces+wladwig=wdtinc....@python.org [mailto:cplusplus-sig-bounces+wladwig=wdtinc....@python.org] On Behalf Of Sebastian Kraemer Sent: Wednesday, July 22, 2009 9:57 AM To: cplusplus-sig@python.org Subject: Re: [C++-sig] wrapping reference members > I would think that .def_readwrite would do what you need. If it doesn't > look at using .def_property and get/set pair. Caveat: making sure that > 'a' stays a valid reference is your problem. Python will happily crash > horribly (if you are lucky) in response to bogus pointers or references. Thanks for your fast answer! I tried it with following code: class_<Foo>("Foo", init<>()) .def_readwrite("a", &Foo::a) ; But it raises the error: error: cannot create pointer to reference member 'Foo::a' And it seems it's really not possible to create a pointer to a reference in c++ ;) So what else do I have to write instead of "&Foo::a"? Cheers, Sebastian _______________________________________________ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig _______________________________________________ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
