Function user32::ScrollWindowEx

pub unsafe extern "system" fn ScrollWindowEx(
    hWnd: HWND, 
    dx: c_int, 
    dy: c_int, 
    prcScroll: *const RECT, 
    prcClip: *const RECT, 
    hrgnUpdate: HRGN, 
    prcUpdate: LPRECT, 
    flags: UINT
) -> c_int