OCCTqtViewer and occtqtGLtools copy from https://github.com/gkv311/occt-samples-qopenglwidget. which implement the wrap of occt view in QT,using this OCCT viewer in the form of Qopenglwidget
in cmakelist.txt, edit your own opencascade_dir path in line 15,16
open cmakelist.txt with qtcreator, select the qt build kit as msvc x64-2019 & qt version should be above 6.
then build