Type Alias mapfunc_t 

pub type mapfunc_t = Option<unsafe extern "C" fn(arg1: *const Layer, arg2: *mut c_int, arg3: c_int, arg4: c_int, arg5: c_int, arg6: c_int) -> c_int>;

Aliased Type

pub enum mapfunc_t {
    None,
    Some(unsafe extern "C" fn(*const Layer, *mut i32, i32, i32, i32, i32) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*const Layer, *mut i32, i32, i32, i32, i32) -> i32)

Some value of type T.