Creating a shortcut triggered by Modifier Key + Scroll

Question

I've been trying to map actions in keyboard shortcuts to be triggered by Alt+Scroll up or Alt+Scroll down. However, it looks as if scrolling isn't considered valid as the second part of a shortcut. Is there a solution that will allow me to accomplish this? Preferably one that doesn't require AutoHotkey?

Edit: I'm using Ubuntu 18.04.3 LTS.

Answer 1

I found the solution! The following will do the trick using xbindkeys:

# Workspace up
"xdotool set_desktop $(expr $(expr $(xdotool get_desktop) + 1) % $(xdotool get_num_desktops))"
   Alt+b:5

# Workspace down
"xdotool set_desktop $(expr $(expr $(xdotool get_desktop) + $(expr $(xdotool get_num_desktops) - 1)) % $(xdotool get_num_desktops))"
   Alt+b:4

Got the commands from here