Hi Nadav I just had a chat with Dag, a core Cython contributor. He mentioned to me another alternative, which is to encapsulate the callback function in a class: https://github.com/dagss/cython-pydata12/blob/master/examples/oointegrate/in... You can import this class from Python, and pass it along as the callback object. There may be some work on improving this functionality in the future, but for now I think that's the cleanest route (and helps us to avoid ctypes!). Stéfan On Tue, Mar 20, 2012 at 1:02 AM, Nadav Horesh wrote:

Can you explain in more details how can I implement it? Any case I am attaching an scheme that may clarify my intend. Soon I'll post a code demonstrating the problem.

  Thank you,      Nadav,