Re: Force Logoff if Inactive

• Previous message: Torgeir Bakken (MVP): "Re: Force Logoff if Inactive"
• In reply to: Harry Paratestes: "Re: Force Logoff if Inactive"
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Date: 15 Nov 2003 22:30:55 -0500

Another possibility:

The Win32_Desktop WMI class has a "ScreenSaverActive" property. You
can use WMI events to monitor the state of that property.

Roughly... You would use ExecNotificationQuery with a query string
like "SELECT * FROM __InstanceModificationEvent WHERE TargetInstance
ISA 'Win32_Desktop'". The result of that query would be an
SWbemEventSource on which you would repeatedly call NextEvent with a
timeout.

That call, in turn, would either time out or give you an
__InstanceModificationEvent (whose TargetInstance is a Win32_Desktop).
Thus, you have a loop which you can use to keep track of the screen
saver state, waking up if that state does not change for a while. You
just need to combine this with a mechanism for logging off the current
user.

This idea needs some refinement; e.g., to make the WQL query apply
only to the Win32_Desktop of the current user. But I believe the
basic idea is sound.

 - Pat
   http://unattended.sourceforge.net/

"Harry Paratestes" <harryp@newz-grp-reader.com> writes:

> Thanks for feedback.
>
> Just now I checked out the Scheduled Task Wizard on W2K client. I believe I
> could do what you're suggesting, but the missing piece to the puzzle is the
> 'inactivity timer'. Did a little more research on this and it dawned on me
> that there MUST be an internal clock/process/service/daemon running on W2K
> that determines inactivity. No surprise here, screensaver and Power Scheme
> functions [Control Panel/Power Options] obviously are triggered by some
> keypad or mouse activity timer. Terminal services on W2K Server has
> inactivity function too (bounces users if not activitely using TS).
>
> If anyone has insight on the process/service/daemon that determines keyboard
> and/or mouse inactivity on W2K and how to exploit it, any guidance or points
> will be much appreciated.
>
> HP sends

• Previous message: Torgeir Bakken (MVP): "Re: Force Logoff if Inactive"
• In reply to: Harry Paratestes: "Re: Force Logoff if Inactive"
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