>>>I have an application that indicates whether a user is logged into it, and if a record is being modified. When the uses closes the application, it updates the online status. I discovered that if the user logs out of Windows, the VFP application is forced to close, and the online status remains unchanged. Is there a way for VFP to detect whether the user is logging out of Windows, or shutting down, so that it can perform its cleanup?
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>>while you can hook windows events, it may be safer to keep a lock on a shared table which is automatically freed if the app closes/crashes or the machine is disconnected.
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>>thomas
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>Thank you, Thomas. Yes, the lock already releases when the application closes, however a dashboard that shows user status is not being updated.
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not knowing your exact use case my gut twitches for coding to such lock releases, as power outings will close down before any win events are sent - unless a reliable UPS on any machine running your app is guaranteed. And even then liquids can stop machiines ;-)