Type Alias snd_hctl_elem_callback_t 

pub type snd_hctl_elem_callback_t = Option<unsafe extern "C" fn(elem: *mut snd_hctl_elem_t, mask: c_uint) -> c_int>;

Aliased Type

pub enum snd_hctl_elem_callback_t {
    None,
    Some(unsafe extern "C" fn(*mut _snd_hctl_elem, u32) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut _snd_hctl_elem, u32) -> i32)

Some value of type T.