[PATCH] winemac: Fix macdrv_WindowPosChanged behavior when SWP_HIDEWINDOW flag is used.

[Piotr Caban]

On 3/11/20 4:28 PM, Piotr Caban wrote:
> On 3/11/20 4:16 PM, Ken Thomases wrote:
>> Hmm.  This means that when a window is hidden, we don't release its 
>> surface, which can be a large allocation.
>>
>> I think the right fix would be something like changing 
>> get_mac_surface() in surface.c to check surface->funcs against 
>> &macdrv_surface_funcs and returning NULL if it's not one of ours.  
>> Then, check the return in the appropriate places (in a number of 
>> places where it's called we know for sure that it's one of ours).
> Isn't it better to never store dummy_surface in data->surface? How about 
> doing something like:
> if (!(swp_flags & SWP_HIDEWINDOW)) surface = NULL;
if (swp_flags & SWP_HIDEWINDOW) surface = NULL;