Some simple Qt5 code si cuius intersit
Er, I should say, if it should be of interest or benefit to anyone - SI CVIVS INTERSIT
[cue klaxon] Attention! This Will Be On The Test! Write this down in your notebooks:
Qt5-Projects/graph03/sinebars.h - Delete QtDataVisualization, a vestige of Qt5 Need to replace QT += datavisualization with QT += graphs in graph03.pro