ALSA Library Reference Manual
DECLARATION
typedef struct snd_ctl_callbacks
{
void *private_data; /* should be used by an application */
void (*rebuild) (void *private_data);
void (*xswitch) (void *private_data, int cmd, int iface,
snd_switch_list_item_t * item);
void *reserved[29]; /* reserved for the future use - must be NULL!!! */
}
snd_ctl_callbacks_t;
REFERENCE