If you need to change the lid close action now and then a don't like clicking through the menus, you can use a script I wrote.
The script is quite simple:
#!/bin/bash state=`xfconf-query -c xfce4-power-manager -p /xfce4-power-manager/lid-action-on-ac` if [ $state -eq 0 ] then # is set to do nothing -> set to suspend target=1 message="suspend" icon="lock" else # is set to suspend -> set to do nothing target=0 message="do nothing" icon="window-close" fi xfconf-query -c xfce4-power-manager -p /xfce4-power-manager/lid-action-on-ac -s $target xfconf-query -c xfce4-power-manager -p /xfce4-power-manager/lid-action-on-battery -s $target notify-send -i $icon "Lid action changed" "to $message."
Be sure to check the icon and/or the messages written in the notification to fit your theme nicely. Save the script,
chmod +x it and assign a keyboard shortcut, i.e. with
"~/scripts/change_lid_action.sh" Mod4 + F12