# Write C Bindings

In order to use a C/C++ library in python, you need to write bindings for it.

pkpy uses an universal signature to wrap a C function pointer as a python function or method, i.e py_CFunction.

typedef bool (*py_CFunction)(int argc, py_Ref argv);

argc is the number of arguments passed to the function.
argv is the pointer to the first argument.

If successful, the function should return true and set the return value in py_retval(). In case there is no return value, you should use py_newnone(py_retval()). If an error occurs, the function should raise an exception and return false.