发生以上错误的Qt版本应该是Qt 5.0.0以上的版本吧。

出现标题错误的大致原因是：因为Qt是跨平台的库，需要依赖于相关的平台库。有个Platform的文件夹，里面有相关dll文件。

references：

http://www.cnblogs.com/naive/p/3568887.html

http://*.com/questions/20495620/qt-5-1-1-application-failed-to-start-because-platform-plugin-windows-is-missi

http://www.cnblogs.com/mmix2009/p/3536825.html

http://zhidao.baidu.com/link?url=q5TBGJukAwegijBIktBbyHuBIZDIhS8NMOuD1zJqu1qOxJz8KoFJJqnGierERn8-dccepY2rzsmFoFMPj14K5P7lKtaVrh7wP7ukM215WYq

https://qt-project.org/forums/viewthread/37265

This application failed to start because it could not find or load the Qt platform plugin "windows",布布扣,bubuko.com

This application failed to start because it could not find or load the Qt platform plugin "windows"