Type Alias SUBCLASSPROC
pub type SUBCLASSPROC = Option<unsafe extern "system" fn(hwnd: HWND, umsg: u32, wparam: WPARAM, lparam: LPARAM, uidsubclass: usize, dwrefdata: usize) -> LRESULT>;Aliased Type§
pub enum SUBCLASSPROC {
None,
Some(unsafe extern "system" fn(HWND, u32, WPARAM, LPARAM, usize, usize) -> LRESULT),
}