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How to know if the NT WorkStation is locked ?

Posted on 2001-08-08
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Last Modified: 2013-12-03
I'm programming in C++.

I want to know if the NT WorkStation where my program is running is locked, so I can start a batch process.

I couldn't find any function that informs about us, so I guess that I have to query the registry or something.

Thanks.
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Question by:pgiusto
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Expert Comment

by:jkr
ID: 6364421
If it is enough to know whether a screensaver is running, you could use

BOOL bRunning;
SystemParametersInfo ( SPI_GETSCREENSAVERRUNNING, 0, &bRunning, 0);

if ( bRunning) {
// is running
}
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by:pgiusto
ID: 6364443
No, because we want to run the batch process when the user goes for lunch and the user MUST lock the workstation when he goes for lunch. The screen saver can run at other times.
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MichaelS earned 200 total points
ID: 6364768
Call OpenInputDesktop and if it returns handle to winlogon desktop than station is locked. The only problem will be is that if it's locked and screen saver is running than you get handle to screen saver desktop.
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Expert Comment

by:MichaelS
ID: 6364800
Or maybe you can open winlogon desktop and get active window from it and check what is it.
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by:Netminder
ID: 6728261
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by:Netminder
ID: 6775000
There has been no activity in this question in quite some time, and it looks like it has been abandoned. As part of our ongoing mission to clean up the topic areas, a Moderator will finalize this question within the next seven (7) days. At that time, either I or one of the other Moderators will force/accept the comment of MichaelS.

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