Type Alias LPDDENUMSURFACESCALLBACK7 

pub type LPDDENUMSURFACESCALLBACK7 = Option<unsafe extern "system" fn(param0: Ref<'_, IDirectDrawSurface7>, param1: *mut DDSURFACEDESC2, param2: *mut c_void) -> HRESULT>;

Aliased Type

pub enum LPDDENUMSURFACESCALLBACK7 {
    None,
    Some(unsafe extern "system" fn(Ref<'_, IDirectDrawSurface7>, *mut DDSURFACEDESC2, *mut c_void) -> HRESULT),
}

Variants

None

No value.

Some(unsafe extern "system" fn(Ref<'_, IDirectDrawSurface7>, *mut DDSURFACEDESC2, *mut c_void) -> HRESULT)

Some value of type T.