Type Alias protocol_state_changed_callback 

pub type protocol_state_changed_callback = Option<unsafe extern "C" fn(event: c_int, user_data: *mut c_void)>;

Aliased Type

pub enum protocol_state_changed_callback {
    None,
    Some(unsafe extern "C" fn(i32, *mut c_void)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(i32, *mut c_void))

Some value of type T.