Type Alias WNDPROC
pub type WNDPROC = Option<unsafe extern "system" fn(param0: HWND, param1: u32, param2: WPARAM, param3: LPARAM) -> LRESULT>;Aliased Type§
pub enum WNDPROC {
None,
Some(unsafe extern "system" fn(*mut c_void, u32, usize, isize) -> isize),
}