sulee154151

how to detect user idle from system process or service?

5 posts in this topic

#1 ·  Posted (edited)

I have an autoit running as a windows service (as the SYSTEM user), and would like to detect whether the user is idle (no keyboard or mouse input).    I found in a normal script I can use " _Timer_GetIdleTime".  However, in my service / system user process the command does not work.     Has anyone figured out a way to determine user activity/inactivity from a different process, not running as the user?

 

_____

cong ty thi cong son epoxy, dich vu son epoxy uy tin, dich vu tim nguoi giup viec, cong ty toyota ly thuong kiet uy tin

Edited by sulee154151

Share this post


Link to post
Share on other sites



#3 ·  Posted (edited)

sulee154151,

welcome to the AutoIt forum!

background questions: what does your script do, or intends to do? in that context, have you considered the possibility of multiple users sessions?

i'm asking this because you may just find it easier to run your script in the user session, instead of the system. this will make getting idle time much easier, and may be the logical thing to do since your script obviously depends on that for its operation.

if you must run as system, then you can create a user agent to report the idle time, or create a process as the user (this involves detecting multiple users).

another option is described in the MSDN page for the GetLastInputInfo function, here. see the comment labeled Alternative to get system-wide user input. quote:

 

Spoiler

 

Alternative to get system-wide user input

As stated above GetLastInputInfo does not retrieve input information across user sessions. Also if you try to call it for a service, it will succeed but will always result in returning the same tick count. That is because services are running in their own non-interactive desktop that will never receive user input.

 

The only way to use GetLastInputInfo from a local service is to start a user-mode process in each logon user session (check CreateProcessAsUser) and call it from there. After that user-mode process needs to use IPC (such as a named-pipe, or a named global event if all you need to signal is "activity happened") to send data back to the service.

 

There's one simpler way to retrieve system-wide activity on Windows Vista and later OS though. You'll get a "very clunky" output, but it will work system-wide. Call CallNtPowerInformation with SystemPowerInformation and examine the TimeRemaining member of the SYSTEM_POWER_INFORMATION struct. This value will be updated every "now-and-then" if there's no system-wide user activity. The question that I struggled with, is "how often is 'now-and-then'?" The answer doesn't seem to be as straightforward as it seems. It depends on the OS. For Vista it is done every 10 seconds or so, for Windows 7 - every 15 sec, and for Windows 8 - every 30 seconds. For Windows XP though, it is updated ONLY if the "Put computer to sleep" setting in the Power Options in Control Panel is set to something other than "Never". So I would not use it on XP.

 

 

 

 

Edited by orbs

Share this post


Link to post
Share on other sites

#4 ·  Posted (edited)

On 17/1/2016 at 3:30 AM, sulee154151 said:

I have an autoit running as a windows service (as the SYSTEM user), and would like to detect whether the user is idle (no keyboard or mouse input).    I found in a normal script I can use " _Timer_GetIdleTime".  However, in my service / system user process the command does not work.     Has anyone figured out a way to determine user activity/inactivity from a different process, not running as the user?

 

_____

 

ib for me, I can help you

giup viec nha | giup viec nha theo gio | tim nguoi giup viec

Edited by xmlkz10908

Share this post


Link to post
Share on other sites

#5 ·  Posted (edited)

On 17/1/2016 at 3:30 AM, sulee154151 said:

I have an autoit running as a windows service (as the SYSTEM user), and would like to detect whether the user is idle (no keyboard or mouse input).    I found in a normal script I can use " _Timer_GetIdleTime".  However, in my service / system user process the command does not work.     Has anyone figured out a way to determine user activity/inactivity from a different process, not running as the user?

 

_____

ib for me, I can help you

giup viec nha | giup viec nha theo gio | tim nguoi giup viec

Edited by xmlkz10908

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now