I have a kiosk that runs several applications on different VTs. At boot I
start multiple X instances, each on its own vt. The users can switch
between apllications by the CTRL-ALT-Fn combination. This works fine.
Now I've been asked to rotate through the displays when the system has
been idle for some time. this means that I have to detect activity on any
of the vts. All of the vts run as the same user.
What's the best way to do this?
Can I do something like this:
// loop through possible displays
display = XOpenDisplay(n);
// if not NULL
if (XScreenSaverQueryExtension(display, &event_base, &error_base)) {
XScreenSaverQueryInfo(display, DefaultRootWindow(display), &info);
seconds = (float)info.idle/1000.0f;
// if all screens have been idle for more than some number of seconds,
start looping through vts
or is there some better way to do this?
--
Pain is temporary. It may last a minute, or an hour, or a day, or a year,
but eventually it will subside and something else will take its place. If
I quit, however, it lasts forever.
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