Type Alias CFMessagePortInvalidationCallBack 

pub type CFMessagePortInvalidationCallBack = Option<unsafe extern "C" fn(ms: CFMessagePortRef, info: *mut c_void)>;

Apple SDK type alias CFMessagePortInvalidationCallBack.

Aliased Type

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

Variants

None

No value.

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

Some value of type T.