How to pass Python object to callback function?

Hello,

How can I pass an arbitrary Python object to a callback function?

Suppose I have this C library:

typedef void cb_fun_t(void*);
void do_callback(cb_fun_t cb_fun, void* ptr) {
    cb_fun(ptr);
}

and I want to call it from Python with f being a Python function as
well:

cbfun_t = CFUNCTYPE(None, c_void_p)
lib.do_callback.argtypes = [cbfun_t, c_void_p]
lib.do_callback.restype = None

def callback(obj):
    print "callback received %s" % repr(obj)

How do I do that? Calling lib.do_callback(cfun_t(callback),
POINTER([1,2])) just raises a TypeError...


Best,

   -Nikolaus

-- 
 »Time flies like an arrow, fruit flies like a Banana.«

  PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6  02CF A9AD B7F8 AE4E 425C


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