public static void ShowWindow(string codeToSave)
        {
            CreateMenuItemWindow window = CreateInstance(typeof(CreateMenuItemWindow)) as CreateMenuItemWindow;

            window.titleContent.text = "Create Menu Shortcut";
            window.ShowUtility();

            // Handle window sizing.
            window.minSize = new Vector2(540, 86);
            window.maxSize = new Vector2(1000, 86);

            // Local storage of the code to save.
            window.m_codeToSave = codeToSave;
        }
 // "Save & Create Shortcut' is pressed.
 void OnSaveShortcut(MouseUpEvent e)
 {
     CreateMenuItemWindow.ShowWindow(GetCode());
 }