[Xcb] about xcb_poll_for_reply

[Vincent Torri]

Hey,

8 months later, i returned to my ecore_xcb port, and I want to use 
xcb_poll_for_reply()

What I would like to know is the meaning of the 2nd parameter.

i do something like:

void * rep;

while (xcb_poll_for_reply (c, ???, &rep, NULL);
   handle_reply (rep);

what should I pass for the 2nd parameter ?

thank you

Vincent