It will be problem if on_reg_state is a normal function of a class because you can't call this function without object instance. I use this way. void on_reg_state_wrapper(...) { XXClass::Instance()->on_reg_state(...); } cfg.cb.on_reg_state = &on_reg_state_wrapper; On Tue, Jan 13, 2009 at 3:15 PM, Joseph Maiquez <josephmaiquez at yahoo.com>wrote: > Hi benny, > > How can I set the value of cfg.cb.on_reg_state and other callback? > > This is what I did > > cfg.cb.on_reg_state = &on_reg_state; > > i declare on_reg_state as function of a class > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090113/9c41163e/attachment-0001.html>