PHIDP_PREPARSED_DATA is supposed to be an opaque pointer, but the size
is accessible through user32.GetRawInputDeviceInfo(RIDI_PREPARSEDDATA),
so we will need to know the struct layout in user32, too.
Signed-off-by: Andrew Eikum <aeikum@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>