I’ve tried two tutorials so far and both had problems when I hit F1 for fullscreen. It could be how I started my project (blank windows project / instead of a console project) but I configured the project so that it dose work w/o compile errors. Except now full screen doesn’t work and SDL_GetError() isn’t reporting anything wrong.

destroy all of your surfaces (except for the display surface), call SDL_SetVideoMode with the new settings, then recreate all of your other surfaces.