SDL_WM_ToggleFullScreen (3) Linux Manual Page
SDL_WM_ToggleFullScreen – Toggles fullscreen mode
Synopsis
#include "SDL.h"
int SDL_WM_ToggleFullScreen(SDL_Surface *surface);
Description
Toggles the application between windowed and fullscreen mode, if supported. (X11 is the only target currently supported, BeOS support is experimental).
Return Value
Returns 0 on failure or 1 on success.
