Hi!
I am trying to expose some c++ classes with boost.python.
Unfortunately, i have some trouble with the inheritance of classes which
need a wrapper.
It is something like that:
class Base {
public:
void someFunction() { doSomething; }
};
class BaseWrapper : public Base, boost::python::wrapper<Base> {
public:
//constructor here
void someFunctionWrapped() { doSomeThing and call
Base::someFunction(); }
private:
PyObject *self;
};
class Derived : public Base {};
class DerivedWrapper : public Derived, boost::python::wrapper<Derived> {
public:
//constructor here
private:
PyObject *self;
};
BOOST_PYTHON_MODULE( myModule )
{
class_<Base, BaseWrapper ("Base", init<>() )
.def( "someFunction", &BaseWrapper::someFunctionWrapped);
class_<Derived, DerivedWrapper, bases<Base> > ("Derived", init<>());
}
In Python:
import myModule
derived = myModule.Derived()
derived.someFunction()
This crashes with a signature error:
Boost.Python.ArgumentError: Python argument types in
Base.someFunction(Derived)
did not match C++ signature:
someFunction(isis::python::BaseWrapped {lvalue})
If the function (here someFunction(Wrapped) ) was not declared in the
wrapper class, it works. But unfortunately i need it there.
Is someone aware of this problem and can give me a hint? Thanks for your
help!
Best regards!
Erik Türke
Department of Neurophysics
Max-Planck-Institute for Human Cognitive and Brain Sciences
Stephanstrasse 1A
04103 Leipzig
Germany
Tel: +49 341 99 40-2440
Email: tue...@cbs.mpg.de
www.cbs.mpg.de
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