Custom AHK module to quit an emulator on keypress?

[Twoflower]

I'm trying to get the Fusion emulator for Sega Genesis working. I can launch it just fine, but the problem is that the emulator has no way to remap the "exit" key to a different key. Since I'm using an X-Arcade on my cabinet, I need to be able to close the emulator when I tap a button, such as the pinball flipper (number 3 key on the keyboard).

 

Can an AHK script be written for this one function? Everything else is fine, I just need a way to shut down the emulator on demand. I'm very new to all of this, I don't know if I have to go install RocketLaunch or if what I have already will work fine, or what.

 

Thanks!