Type Alias LPCLIPPERCALLBACK 

pub type LPCLIPPERCALLBACK = Option<unsafe extern "system" fn(lpddclipper: Ref<'_, IDirectDrawClipper>, hwnd: HWND, code: u32, lpcontext: *mut c_void) -> u32>;

Aliased Type

pub enum LPCLIPPERCALLBACK {
    None,
    Some(unsafe extern "system" fn(Ref<'_, IDirectDrawClipper>, HWND, u32, *mut c_void) -> u32),
}

Variants

None

No value.

Some(unsafe extern "system" fn(Ref<'_, IDirectDrawClipper>, HWND, u32, *mut c_void) -> u32)

Some value of type T.