Anyone knows how I can launch something in DosBox with parameters?
Since it's even possible to install Win 3.1(1) in DosBox I could directly launch a Win 3.1 game (of course only with keyboard inputs) and exit back to RetroArch.
If you're interested, here is a very nice tool someone wrote a few years ago which is used to shutdown Windows 3 directly after the executed program/game has been closed:
http://www.shdon.com/blog/2010/01/26/created-runexit-tool
I know it's off topic but on a PC with mouse support you could enjoy the whole Win 3 game library (including the sweet and nostalgic Microsoft Entertainment Pack 1 - 4) this way.
However it is necessary to launch DosBox so it launches Windows 3 directly with the parameters for the runexit tool and the game (and even parameters for the game like cheatmode or something if wanted).
If noone knows the answer I'll start trying around with this on PC and if it works, on my Wii U:
https://wiki.libretro.com/index.php?title=DOSBox#Usage