It was a lot of hard work however I got Windows 3.11 (the lowest and oldest one) to work with my software. Also, I got Windows 95 beta to work with my software so any later Windows 95 should work with my software. Therefore, currently my software works from DOS all the way up to Windows 10! YES............................................... ..................................
There are 3 different ones for each. DOS, Windows 3.11 to Windows Vista and 7?, and Window 8 to 10.