Hello,
judging by the attached images you have some sort of embedded device with a touch screen (maybe Arduino, RaspberryPi ... not sure).
In order to be able to help you, I need a few informations:
- what device and touch screen are you using ?
- what programming language has your old coder used (I guess C++, but I need to be sure) ?
- do you have the actual C++ source code for the program you run on this device ?
Let me know if you are interested to work with me and we can discuss the details,
Paul