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大家好
最近要做一个 GUI 有用到 <QException> 可是找不到这个文件， 显示 "No such file or Directory" 是什么问题？
QT += core 试试看。 不过你如果是Qt4.x那么可能不行，因为Qt没有这样类。Qt5.x就可以。
重新 install Qt 吧!
