Hi! Is it possible to indicate default arguments for virtual methods, using the BOOST_PYTHON_MEMBER_FUNCTION_OVERLOADS macro? I have this code: struct X { virtual void f(int x = 10, char c = 'a') { std::cout << x << ", " << c << std::endl; } }; void call_f(X& x) { x.f(); } BOOST_PYTHON_MEMBER_FUNCTION_OVERLOADS(f_overloads, f, 0, 2) struct XWrap: X { XWrap(PyObject* self_): self(self_) {} XWrap(PyObject* self_, const X&): self(self_) {} PyObject* self; void f(int x = 10, char c = 'a') { call_method<void>(self, "f", x, c); } void default_f(int x = 10, char c = 'a') { X::f(x, c); } }; BOOST_PYTHON_MODULE(test) { def("call_f", &call_f); class_< X, XWrap >("X") .def("f", &X::f, &XWrap::default_f, f_overloads()) ; } But this does not compile. Here's the first line of the output of the compiler: D:\Programming\Libraries\boost-cvs\boost\boost/python/detail/caller.hpp(53): error: class "f_overloads" has no member "result_converter" So I tried to change the class_ definition to this: class_< X, XWrap >("X") .def("f", &X::f, &XWrap::default_f) .def("f", &X::f, f_overloads()) ; It compiles fine, but in python:

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from test import * x = X() x.f(10, 'c') Traceback (most recent call last): File "<stdin>", line 1, in ? RuntimeError: unidentifiable C++ exception

I also tried to change the second .def to: .def("f", &XWrap::f, f_overloads()) and: .def("f", &XWrap::default_f, f_overloads()) But with the same results. So, is it possible to have virtual methods with default arguments? If so, how? Any pointer would be greatly appreciated. Thanks in advance, Nicodemus.