how to temp freeze desktop (sigstop?) using ltsp

[joshiggins]

Hi all,
I have an LTSP deployment and wondering if its possible to somehow freeze a clients display.
I tried using the slay tool in debian, running

slay -SIGSTOP username

. Although this does freeze the desktop, it also freezes the program, and as im using it as part of a script, prevents the rest of the script from running. Other signals like CONT work fine using slay, just not stop.

Any ideas why? or is there another way?

thanks

[GNU-Fan]

Every application running on a XWindow system can lock any input as long as it wants to with the XGrabKeyboard. All applications keep running but the user input will be disabled.