[pygccxml-development] Howto wrap "out" arguments of a methode

[Alexander E. <new...@st...>]

How to wrap methode Get with Boost.Python?


     class MyClass {
     public:
         MyClass();

         void GetX(double pos_x);
[...]


Py++ generates following code:

[...]
             .def( bp::init< >() )
             .def(
                 "Get"
                 , &::MyClass::Get
                 , ( bp::arg("pos_x")) )
[...]

It seems that it (or gccxml) cannot distinguish between in and out parameter.

I'v tried it with:

         .def(
             "GetX"
             , &::MyClass::GetX
             , bp::arg("")
             , bp::return_value_policy<bp::return_arg<1>() >()

But when I try it in python:

Boost.Python.ArgumentError: Python argument types in
     MyClass.GetX(MyClass, int)
did not match C++ signature:
     GetX(class MyClass::LedPosition_C {lvalue}, int {lvalue} )


Thanks
Alexander