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Asked: 2026-05-26T23:53:41+00:00

This is in regards to applications that run in the taskbar but should be

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This is in regards to applications that run in the taskbar but should be applicable to standard apps, Winforms, WPF, etc.

Question: I am after some method (preferably via managed code) to be notified when a user either has their screen “locked” while my app is running and/or know when they log back in.

GMail Notifier does this sort of thing for example, if my PC is locked for a while when I log in again it shows a list of emails that arrived since locking the PC. I’m looking to replicate that kind of functionality.

Does anyone have any ideas on how to accomplish this?

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1 Answer

  1. Editorial Team

    The question mentioned by Mike Daniels has answers:

    Checking for workstation lock/unlock change with c#

    The one I prefer is using is SessionSwitchReason:

    http://msdn.microsoft.com/en-us/library/microsoft.win32.sessionswitchreason.aspx

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