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Measure Idle Time

Posted on 2004-08-29
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Last Modified: 2013-11-15
I would like to measure the idle time the same way a screen saver does. I want to do this for different operating systems; linux, mac os x, windows. I also want to know whether a pc is connected to some network or is totally disconnected for the types of operating systems mentioned earlier.
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Question by:kkonst04
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7 Comments
 
LVL 41

Accepted Solution

by:
graye earned 250 total points
ID: 11927940
I don't think you're gonna find a single answer to fit all of the OS's you mentioned.

From a Windows perspective, the API that is used by the screen saver is GetLastInputInfo, detecting the existance of a network, the API is typically WNetGetNetworkInformation

DWORD WNetGetNetworkInformation(
  LPCTSTR lpProvider,
  LPNETINFOSTRUCT lpNetInfoStruct
);

typedef struct tagLASTINPUTINFO {
    UINT cbSize;
    DWORD dwTime;
} LASTINPUTINFO, *PLASTINPUTINFO;

BOOL GetLastInputInfo(
    PLASTINPUTINFO plii
);
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LVL 19

Assisted Solution

by:akoster
akoster earned 250 total points
ID: 11929455
You could try to ping a list of computers. Depending on the output you can determine whether the computer is online or not

this can be done in most languages, ranging from (visual)basic and batch to java or C

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Expert Comment

by:akoster
ID: 12257853
the 4 days are not over yet ?
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LVL 41

Expert Comment

by:graye
ID: 12264647
Sounds like you should volunteer to help administer the site...
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