Fairly hacky update of https://code.google.com/archive/p/qrencode-win32/ to permit compliation under Visual Studio 6.0. These probably aren't the droids you're looking for.
KenCoder/qrencode-win32
A modification of https://code.google.com/archive/p/qrencode-win32/ to include VisualC++ 6.0 build files
CLGPL-2.1