1,http://download.qt.io/official_releases/qt/5.7/5.7.1/qt-opensource-windows-x86-msvc2015_64-5.7.1.exehttps://www.qt.io/download-open-source/#section-22,http://download.qt.io/official_releases/vsaddin/qt-vs-tools-msvc2015-2.0.0.vsix
3,
4,5,设置系统环境变量QTDIR指定QT的include路径。