Type Definition 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>;

Required features: "Win32_UI_Shell", "Win32_Foundation"