When there are multiple monitors and their monitor region union can still be represented by a simple
rectangle, the clip box region type for the screen DC is still SIMPLEREGION.
Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>