1.'QMainWindow' file not found
网上：解决方法：
在.pro中加入
QT +=core gui greaterThan(QT_MAJOR_VERSION,4):QT+=widgets
别人的demo,#include <QMainWindow> 可以点进去，但是报错。切换了下
2.:-1: error: error: /std:c++latest: No such file or directory
3.android does not support the architectures used by the kit
标签：QMainWindow,QT,笔记,问题,报错,file,error From： https://www.cnblogs.com/Jieth/p/16869023.html