Hi, Ryan! Em Qua, 15 de set de 2021 05:45, Ryan McClue <re.mcclue@xxxxxxxxxxxxxx> escreveu: > The struct _snd_ctl_ops contains a number of function pointers. > Where are these functions defined in the alsa-lib source tree, e.g int > (*subscribe_events)(snd_ctl_t *handle, int subscribe) > Perhaps you are looking for src/control/control_hw.c specifically at line 341? Thanks, Geraldo Nascimento > -- > Ryan McClue, Sydney