基于QT+C++开发的界面收缩栏效果+源码

QT_SYSROOT: QT_INSTALL_PREFIX:E:/QT/5.15.2/msvc2019_64 QT_INSTALL_ARCHDATA:E:/QT/5.15.2/msvc2019_64 QT_INSTALL_DATA:E:/QT/5.15.2/msvc2019_64 QT_INSTALL_DOCS:E:/QT/Docs/Qt-5.15.2 QT_INSTALL_HEADERS:E:/QT/5.15.2/msvc2019_64/include QT_INSTALL_LIBS:E:/QT/5.15.2/msvc2019_64/lib QT_INSTALL_LIBEXECS:E:/QT/5.15.2/msvc2019_64/bin QT_INSTALL_BINS:E:/QT/5.15.2/msvc2019_64/bin QT_INSTALL_TESTS:E:/QT/5.15.2/msvc2019_64/tests QT_INSTALL_PLUGINS:E:/QT/5.15.2/msvc2019_64/plugins QT_INSTALL_IMPORTS:E:/QT/5.15.2/msvc2019_64/imports QT_INSTALL_QML:E:/QT/5.15.2/msvc2019_64/qml QT_INSTALL_TRANSLATIONS:E:/QT/5.15.2/msvc2019_64/translations QT_INSTALL_CONFIGURATION: QT_INSTALL_EXAMPLES:E:/QT/Examples/Qt-5.15.2 QT_INSTALL_DEMOS:E:/QT/Examples/Qt-5.15.2 QT_HOST_PREFIX:E:/QT/5.15.2/msvc2019_64 QT_HOST_DATA:E:/QT/5.15.2/msvc2019_64 QT_HOST_BINS:E:/QT/5.15.2/msvc2019_64/bin QT_HOST_LIBS:E:/QT/5.15.2/msvc2019_64/lib QMAKE_SPEC:win32-msvc QMAKE_XSPEC:win32-msvc QMAKE_VERSION:3.1 QT_VERSION:5.15.2