Yes, but it seems I'm unable to see the wood for the trees. The concrete situation: Im developing a Interface that supposedly is going to enable AIs being written in Python for a C/C++ environment. What I get is a pointer to a Callback Instance I have to deliver to the AI dev (Python side). The Instance enables the AI dev to ask question about the Applications state so the AI reacts accordingly. Now I have a boost::module wrapper for the Class Im getting a reference of and successfully built a callback so the embedded Python is able to fetch the Callback Instance coming from the App. But I run into... Sandbox: // The Callback coming from the Application of which I am not allowed to taint the Source Tree struct EngineCallback { void setInt(int number) { this->number = number; } void setLoop(bool loop) { this->loop = loop; } int getInt() { return this->number; } bool getLoop() { return this->loop; } int number; bool loop; }; EngineCallback* test = new EngineCallback; // Entrypoint for Python to come ant fetch the Application Callback shared_ptr<EngineCallback> PyCallback( EngineCallback* &test ) { return shared_ptr<EngineCallback>(test); } // The Problem? ...how to convert? // The Wrapper for all this BOOST_PYTHON_MODULE(EngineCallback) { class_<EngineCallback, shared_ptr<EngineCallback>, boost::noncopyable>("EngineCallback", no_init) .def("setInt", &EngineCallback::setInt) .def("setLoop", &EngineCallback::setLoop) .def("getInt", &EngineCallback::getInt) .def("getLoop", &EngineCallback::getLoop) ; def("PyCallback", &PyCallback); } # test.py from EngineCallback import PyCallback from EngineCallback import EngineCallback test = PyCallback() dir(test)
ends in: Traceback (most recent call last): File "test.py", line 5, in <module> test = PyCallback() Boost.Python.ArgumentError: Python argument types in EngineCallback.PyCallback() did not match C++ signature: PyCallback(EngineCallback* {lvalue})
Conversions in PyCallback missing?, how/with what do I accomplish them? I think Im having trouble with C/C++ more in general than anything else, but I would appreciate if you could just point to the things I should look at to understand and come up with a solution. Thanks in advance, lwk On 25 May 2010 15:40, Steven Watanabe <watanabesj@gmail.com> wrote:
AMDG
Leonhard Weber wrote:
I'm in the same bind this topic describes: http://lists.boost.org/boost-users/2009/02/44749.php Unfortunately the subject didn't tell about the resolution or approach he took to succeed. Can anyone help me?
Basically: I want to expose a C++ Instance to Python at runtime. I have a pointer to the Instance and need to expose that instance to Python.
Have you tried the Boost.Python documentation? http://www.boost.org/libs/python/
In Christ, Steven Watanabe
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