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(*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.