Original version of this code:
The Qt Company
qt-everywhere-opensource-src-4.8.7.zip on https://download.qt.io/archive/qt/4.8/4.8.7/

Patch to get it to work under VS 2015:
Sandy Martel
https://github.com/sandym/qt-patches/tree/master/windows/qt-4.8.7

Further modifications to get to work under VS 2019:
David Thompson