def ask_window(tk_root, window_type):
    """Pass information through a window
    :param tk_root: An instance of a Tk or an instance of its subclass
    :param window_type: WindowMeta or its subclasses
    """
    window = window_type(tk_root)
    window.transient(tk_root)
    tk_root.wait_window(window)
    return window.table
