I ask for help to solve a problem.
I have a Gann Trader 3 program (software for stock charts). This program written in Dos works up to the Xp windows version. It has a particular: it prints only on the parallel LPT port. To work it needs a "at least" windows xp (but it can be started from dos), an LPT port and an "old" ink printer.
Therefore this program was not designed to work with USB ports and recent printers (based on usb, whireless ..).
I thought about trying this program on DOS Box ..
Now, trying to emulate this program with DOSbox there is a technical problem: the program cannot print on a virtual port (lpt to usb) present in windows 10, 7, xp or simple virtual PDF printer; printing does not take place.
Is there a solution that allows you to print a graph on a modern printer (usb) or a limit on PDF ???

Unzip the file and copy the "GANN31" and "ONE" (graphics) folder to C. Start gann.exe from Dosbox

link file:
https://ufile.io/4bn42wfi