Type Alias LPFNVIEWCALLBACK 

pub type LPFNVIEWCALLBACK = Option<unsafe extern "system" fn(psvouter: Ref<'_, IShellView>, psf: Ref<'_, IShellFolder>, hwndmain: HWND, umsg: u32, wparam: WPARAM, lparam: LPARAM) -> HRESULT>;

Aliased Type

pub enum LPFNVIEWCALLBACK {
    None,
    Some(unsafe extern "system" fn(Ref<'_, IShellView>, Ref<'_, IShellFolder>, HWND, u32, WPARAM, LPARAM) -> HRESULT),
}

Variants

None

No value.

Some(unsafe extern "system" fn(Ref<'_, IShellView>, Ref<'_, IShellFolder>, HWND, u32, WPARAM, LPARAM) -> HRESULT)

Some value of type T.