c# code to check if OS has entered idle state or not?

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Hi,

Please let me know if they are any APIs or any other methods by which i can check if the system has entered idle state or not?

Posted 9-Jun-11 23:06pm

Omrd

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Kim Togo · Answer 1 · 2011-06-09T23:19:00

Solution 2

Check out SystemEvents.PowerModeChanged[^] event and info from PowerModeChangedEventArgs[^]

Posted 9-Jun-11 23:19pm

Kim Togo

Comments

Wayne Gaylard 10-Jun-11 5:29am

That's cool!

Kim Togo 10-Jun-11 7:24am

Thanks

yesotaso 10-Jun-11 7:23am

Good one, but something bothers me. If powermode changes and PC goes to hibernate what good do knowing that? :P

Kim Togo 10-Jun-11 7:29am

I know... I haven tried it out. But in the documentation from MSDN on PowerModes.
It says:

Suspend - The operating system is about to be suspended.

How much reaction time there, is do not know.

OriginalGriff · Answer 2 · 2011-06-09T23:11:00

Solution 1

IFAIK, no: think about it - if the OS is in the idle state, how is the code you are using to check running?

Posted 9-Jun-11 23:11pm

OriginalGriff

yesotaso · Answer 3 · 2011-06-10T01:28:00

I am not quite sure what you want to do with idleness or what you mean by idle but user32.dll exports GetLastInputInfo[^] which you can check timely fashion to decide whether PC is idle or not. For instance, "2 minutes past since last user input, so I assume user is away from keyboard and this code will do blah blah".