C++ SDL Fullscreen Toggle

gistfile1.txt

/*
* A function for toggling windowed mode in a C++ SDL app. Fullscreen windows will appear on whichever screen the window was on.
* 
* Could be used in conjunction with SDL_GetDisplayName(int displayIndex) 
* and SDL_GetNumVideoDisplays(void) to programmatically force fullscreen onto a particular display
*/

void toggleWindowed()
{
	//Grab the mouse so that we don't end up with unexpected movement when the dimensions/position of the window changes.
	SDL_SetRelativeMouseMode(SDL_TRUE);
	windowed = !windowed;
	if (windowed)
	{
		int i = SDL_GetWindowDisplayIndex(win);
		screenWidth = windowedWidth;
		screenHeight = windowedHeight;
		SDL_SetWindowFullscreen(win, 0);
	}
	else
	{
		int i = SDL_GetWindowDisplayIndex(win);
		SDL_Rect j;
		SDL_GetDisplayBounds(i, &j);
		screenWidth = j.w;
		screenHeight = j.h;
		SDL_SetWindowFullscreen(win, SDL_WINDOW_FULLSCREEN_DESKTOP);
	}
	recalculateResolution(); //This function sets appropriate font sizes/UI positions
}