[SDL] [SPAM] Toggling fullscreen at run time.

[Peter Ketting]

>> So, I can just call the SDL_SetVideoMode() again but without the
>> SDL_FULLSCREEN flag, right? But will it return the same display surface
>> pointer?
>
> It may, but you can't guarantee it.

Personally, I store the pointer to the actual display surface globally. To 
switch between full- and windowed modes, I call SDL_QuitSubSystem 
(SDL_INIT_VIDEO), which (if I am not mistaking) does the video-cleanup for 
me. Then I just Initialize the video again, and re-open a display surface, 
with (or without) SDL_FULLSCREEN. This has worked just fine for me and as 
far as I can tell there has not been any problems, and I am able to switch 
between screenmodes without interrupting the program itself.

Cheers,
Peter