如何向系统菜单添加自己的菜单。通过NativeWindow重再自己的组件，并响应响应的方法，当系统创建菜单时就可以绘制自定义菜单-How to add your own menu system menu. NativeWindow weight again by their own components, and in response to the response method, when the system menu you can create a custom menu drawing