public override void HandleInput(InputState input)
        {
            // Move to the previous menu entry?
            if (input.IsMenuUp())
            {
                selectedEntry--;

                if (selectedEntry < 0)
                    selectedEntry = menuEntries.Count - 1;
            }

            // Move to the next menu entry?
            if (input.IsMenuDown())
            {
                selectedEntry++;

                if (selectedEntry >= menuEntries.Count)
                    selectedEntry = 0;
            }

            if (input.IsMenuSelect())
            {
                OnSelectEntry(selectedEntry);
            }
            else if (input.IsMenuCancel())
            {
                OnCancel();
            }
        }
 /// <summary>
 /// Allows the screen to handle user input. Unlike Update, this method
 /// is only called when the screen is active, and not when some other
 /// screen has taken the focus.
 /// </summary>
 public virtual void HandleInput(InputState input)
 {
 }