Function curses_sys::copywin

pub unsafe extern "C" fn copywin(
    srcwin: *const WINDOW, 
    dstwin: *mut WINDOW, 
    sminrow: c_int, 
    smincol: c_int, 
    dminrow: c_int, 
    dmincol: c_int, 
    dmaxrow: c_int, 
    dmaxcol: c_int, 
    overlay: c_int
) -> c_int