I looked around for a while, but could not find a satisfactory answer on how to prevent your texture mapping from becomming garbled after pressing alt-tab when in full-screen mode. Can anybody please help me? I know I would likely need to reload the textures, but how can I (preferably through SDL) check if the application has lost, then regained focus? I know this should be simple, and is likely handled through the message queue, but clearifying a few details would be greatly appreciated. Thanks.

I made it so I can reload all of my textures, and I'm using SDL_ACTIVEEVENT to check when it regains focus, but now I'm having a strange problem.

When I go back into the game after pressing alt-tab, it's becomes almost frozen. I say almost frozen, because nothing is moving and the screen buffer is a little garbled, but pressing Escape still exits the program. The screen freezes.

Can anyone explain why this is happening and what can be done to fix it?