Epson Printer Hack the Touchscreen

Hello Guys,

Would like to know if it's possible to program the Touchscreen without interfere the printer functions.
For exemple I would like to add a button when I click on it the Touchscreen switch into my Program and then when I click again it comeback to the mainscreen of the OS Printer.
Like a VGA Swich on a computer.

I don't know if you get it lol.
My english is not good sorry...

Thanks in advance