Hi, Yeah, I've included python.h and object.h but the compiler still complain about not finding PyObject. It's weird. So I'm developing and App on windows using VS 8.0. I've intalled Python 2.5 and have added the include directory to my project's configuration. I'm also using boost.python in another application to wrap my C++ classes.
Here's the C++ class I'm wrapping: class widget { public: widget(const string &name, unsigned int myint) : { } static unsigned int __stdcall Callback(void * voidPtr); void startMessageHandler(); void stopMessageHandler(); virtual void handleMessage(void *message)=0; }; So the idea here is that the Python user will derive from widget and override the virtual method "handleMessage". A thread is spawned by "startMessageHandler()" that does some work and periodically calls "handleMessage" passing it a chunk of memory. This memory is intended to be zero-copy. Okay, so I've implemeted this class to set up the class for Python: class py_widget : public widget { public: py_widget(PyObject *p, const string &name, unsigned int myint) : self(p), py_widget(name, myint) { } void handleMessage(void *message); PyObject *self; }; where handleMessage has the following implementation: void PyAsyncQueue::handleMessage(void *message) { //get the memory block size with a method not shown here int size = getSize(message); //create a buffer object so the Python users can access memory block directly. PyObject *obj = PyBuffer_FromReadWriteMemory( message, size ) ; //now what ???? //I've tried calling the method directly based on some info I found some documentation, but this doesn't //compile because the compile can't find PyObject. Also, I really know what it looks like anyways. //self->attr("handleMessage")(obj); //This boost.python call doesn't work either. //call_method<void>(self, "handleMessage", obj); } Thanks for your suggestions on this, James "Jeff Schwab" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > James Whetstone wrote: >> I'm trying to access a PyObject directly from C++ for the purpose of >> calling method on a Python object that is an intance of a derived C++ >> class. My problem is that the compiler is complaining about not PyObject >> not being defined. Has anyone run into the problem? Where is PyObject >> defined? > > Are you using Python's C API? > > Did you #include "Python.h" before using PyObject? > > PyObject is a C-style struct defined in object.h, which is in turn > included by Python.h. Does your compiler know where to look for those > headers? If you are getting messages of the form "error: cannot find > Python.h," then add -Iyour_python_root/include/python2.5 (or whatever > version) to the CXXFLAGS variable in your makefile, or to your compiler's > command line. -- http://mail.python.org/mailman/listinfo/python-list