Why not use xbindkeys? In my laptop I glue some scripts to various buttons with this .xbindkeysrc file in my home directory:

"$HOME/bin/do_suspend.sh" m:0x0 + c:150 XF86Sleep

"$HOME/bin/do_toggle_touchpad.sh" m:0x0 + c:199 XF86TouchpadToggle

"$HOME/bin/do_autoselect_monitor.sh" m:0x0 + c:235 XF86Display

"wicd-cli --wireless --disconnect && sudo rfkill block 1" m:0x0 + c:246 XF86WLAN