Get a window from a stored ID.
SDL_Window* SDL_GetWindowFromID(SDL_WindowID 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 3.0.0.