Type Alias windows_sys::Win32::UI::Shell::LPFNVIEWCALLBACK

pub type LPFNVIEWCALLBACK = Option<unsafe extern "system" fn(psvouter: *mut c_void, psf: *mut c_void, hwndmain: HWND, umsg: u32, wparam: WPARAM, lparam: LPARAM) -> HRESULT>;

Aliased Type

enum LPFNVIEWCALLBACK {
    None,
    Some(unsafe extern "system" fn(_: *mut c_void, _: *mut c_void, _: *mut c_void, _: u32, _: usize, _: isize) -> i32),
}

Variants

None

No value.

Some(unsafe extern "system" fn(_: *mut c_void, _: *mut c_void, _: *mut c_void, _: u32, _: usize, _: isize) -> i32)

Some value of type T.