IceWM. How to lock screen after laptop lid is closed?

I use the IceWM window manager. I would like the screen to lock after closing the laptop lid. I've found a couple of guides that looked promising ((https://unix.stackexchange.com/questions/260737/switch-off-display-and-lock-screen-in-xfce-power-manager-when-laptop-lid-is-clos) , (https://help.ubuntu.com/community/LaptopLidAndDockScripts)) but unfortunately didn't work for me. Maybe there is a solution that I'm currently missing?