Type Alias windows_sys::Win32::UI::Shell::SUBCLASSPROC

pub type SUBCLASSPROC = Option<unsafe extern "system" fn(hwnd: HWND, umsg: u32, wparam: WPARAM, lparam: LPARAM, uidsubclass: usize, dwrefdata: usize) -> LRESULT>;

Aliased Type

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

Variants

None

No value.

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

Some value of type T.