[Pyrex] while loop not detecting ctrl-c

[Bryan Weingarten]

greg / anyone,

can anyone tell me if this issue can be solved?  when  Play.play() is 
called and a callback parameter is specified, the user can do a ctrl-c 
(on windows) and break out of the play.  my guess why this works is that 
the callback ends up in the python interpreter and the pyrex  "except *" 
is able to detect it with PyErr_Occurred().   but if callback is not 
specified, the while loop never goes back to the python interpreter 
during the loop and the ctrl-c doesn't get detected.  as you can see 
from the pyrex generated code,  PyErr_Occurred is correctly being called 
after each frame is played, so i'm at a loss.

thanks you for any help,

bryan

-----------

cdef extern from "playif.h":
   int  mpgedit_play_frame(void *ctx) except *

cdef class Play:
    def play(self, callback=None):
        self.callback = callback
        if callback:
            mpgedit_play_set_status_callback(self.ctx, 
_callback_wrapper, <void*>callback)                                   
        while(mpgedit_play_frame(self.ctx)): pass           


---------

generated c code for the while loop in  Play.play()

  while (1) {
    __pyx_L3:;
    __pyx_1 = mpgedit_play_frame(((struct __pyx_obj_7mpgedit_Play 
*)__pyx_v_self)->ctx);
    if (PyErr_Occurred()) {
        __pyx_filename = __pyx_f[0];
        __pyx_lineno = 95;
        goto __pyx_L1;
    }
    if (!__pyx_1) break;
  }