参考链接如下：

https://blog.csdn.net/Vincent95/article/details/73395612

http://shaoyuan1943.github.io/2013/12/15/duilib-message/

http://www.cxyzjd.com/article/developer1024/79946248

https://www.cnblogs.com/dahai/p/3455727.html

http://www.cxyzjd.com/article/HXBCJF/79568464

http://www.xuwu.org/duilib-wm_create/