c++ - qDebug() doesn‘t print anything - Stack Overflow https://stackoverflow.com/questions/34355549/qdebug-doesnt-print-anything
sudo vim /usr/share/qt5/qtlogging.ini
[Rules]
*.debug=true
qt.qpa.xcb.xcberror.warning=true
qDebug() doesn't print anything
原文：https://www.cnblogs.com/rsapaper/p/14383669.html