[−][src]Type Definition alsa_sys::snd_mixer_elem_callback_t
type snd_mixer_elem_callback_t = Option<unsafe extern "C" fn(elem: *mut snd_mixer_elem_t, mask: c_uint) -> c_int>;
\brief Mixer element callback function \param elem Mixer element \param mask event mask \return 0 on success otherwise a negative error code