WHDLoad accepts QuitKey but i don't know if it accepts joypad key
I think No
In another way, there will be not enough memory on the cd32 to stop game and reload the menu system at the same time
That's why the menu of this comp use permanent memory (RAD device) to allow all memory when rebooting
So that's why i think it's quite useless (on a real CD32) but on winuae it will be possible
Of course all games of the comp should be WHDLoaded......