Type Alias arg_checkfn 

pub type arg_checkfn = Option<unsafe extern "C" fn(parent: *mut c_void) -> c_int>;

Aliased Type

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

Variants

None

No value.

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

Some value of type T.