[pypy-issue] [issue1233] str() types can't be used with ctypes's py_object()

Armin Rigo tracker at bugs.pypy.org
Mon Sep 3 12:02:32 CEST 2012

Armin Rigo <armin.rigo at gmail.com> added the comment:

Passing a "payload" argument for a callback is needed if you were writing all C
code, but not if you are writing the callback in Python.  Can't you use the
following scheme instead?

def make_callback(payload_string):
    def callback(args..):
        ... use payload_string ...
    return callback

Then you pass to C code the callback from "make_callback(string)".  The c_void_p
argument is not useful and can always be NULL.

nosy: +arigo

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