Type Alias CAPSTATUSCALLBACKA 

pub type CAPSTATUSCALLBACKA = Option<unsafe extern "system" fn(hwnd: HWND, nid: i32, lpsz: PCSTR) -> LRESULT>;

Aliased Type

pub enum CAPSTATUSCALLBACKA {
    None,
    Some(unsafe extern "system" fn(HWND, i32, PCSTR) -> LRESULT),
}

Variants

None

No value.

Some(unsafe extern "system" fn(HWND, i32, PCSTR) -> LRESULT)

Some value of type T.