Type Alias event_callback_fn 

pub type event_callback_fn = Option<unsafe extern "C" fn(arg1: c_int, arg2: c_short, arg3: *mut c_void)>;

Aliased Type

pub enum event_callback_fn {
    None,
    Some(unsafe extern "C" fn(i32, i16, *mut c_void)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(i32, i16, *mut c_void))

Some value of type T.