MAME Tab Menu Setup Question (Add to existing controls possible?)

[websherpa]

I have a stupid question because in years of searching I can never seem to find definitive documentation on how you use the “In Game” Tab Menu UI.  I know how to change controls and add new multiple controls and keys, but the one thing I have never been able to figure out is whether you can just UPDATE and ADD ON to the existing MAME controls from that in game interface?  (I guess it can be done editing the XML files, but I often run into a game where I’d like to ADD an additional control without having to grab all my controller types and start from scratch for the one key just to add on an additional control key.

Does that make sense?

Also IS there a definitive tutorial or documentation somewhere that goes over ALL that you can do in that in game Tab Menu system?

Thank you!

[Thenasty]

you can't ADD ON. You must re-do that control you have then add another one after it.

ie: If you have B1 = F    and you want to add G, you  must enter F again then ADD (enter again) G so now you get B1 = F or G (meaning either one activate the command).
      if you want F and G then enter F followed by G so you get B1 = F and G (meaning you must hit 2 buttons to activate the command)

Hope that is what you're looking for.

[websherpa]

 

This is both awesome (thank you) and not the news I was hoping for (lol).

Thank you for setting me straight, I know how to do it this way, I was just hoping that "maybe" there was a way to simply "add on" only because occasionally I don't have ALL of the necessary controllers handy or active at that moment.  Of course I can do it through the configs as well as more of a "project" change.