UID:139548
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hp_201111:Qt4 to Qt5 在原来的 .pro 里增加QT += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgets....... (2018-10-24 16:06)
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liucheng86:https://github.com/mutse/qt5-book-code (2020-02-26 10:22)