Type Alias iv_panelupdateshandler 

pub type iv_panelupdateshandler = Option<unsafe extern "C" fn(x: i32, y: i32, w: i32, h: i32)>;

Aliased Type

pub enum iv_panelupdateshandler {
    None,
    Some(unsafe extern "C" fn(i32, i32, i32, i32)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(i32, i32, i32, i32))

Some value of type T.