为啥都不用Qt Quick Controls 2呢
https://github.com/qt/qtquickcontrols2/ 为啥都不用Qt Quick Controls 2呢
https://github.com/qt/qtquickcontrols2/ https://github.com/qt/qtquickcontrols2/ https://github.com/qt/qtquickcontrols2/ 
https://github.com/qt/qtquickcontrols2/