C插件式开发
http://blog.csdn.net/joyhen/article/details/22905481
http://blog.163.com/zhou_zzq/blog/static/10196221201372423659959/
http://www.cnblogs.com/naaoveGIS/p/4837486.html
http://blog.csdn.net/mingzznet/article/details/46914037
http://kb.cnblogs.com/page/104235/
http://www.cnblogs.com/wuhuacong/p/3180589.html
https://wenku.baidu.com/view/bf2ad9c88e9951e79a89271d.html
http://blog.csdn.net/joyhen/article/details/22905481