Get a window from a stored ID.
SDL_Window * SDL_GetWindowFromID(Uint32 id);
|id||the ID of the window|
Returns the window associated with
id or NULL if it doesn't exist; call SDL_GetError() for more information.
The numeric ID is what SDL_WindowEvent references, and is necessary to map these events to specific SDL_Window objects.
This function is available since SDL 2.0.0.