Running task on shutdown
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Hi, Apologies if this has been covered somewhere but I've not found anything related. I'm working on an idea which would require a long-running task to complete at the time the user logs off, I know it's possible to delay the logoff but I was hoping to find a way to run the task as part of the logoff, something like when Windows synchronises offline folders (not sure if that's exactly the right term as I am working from memory here). Does anyone have any ideas? Thanks
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Hi, Apologies if this has been covered somewhere but I've not found anything related. I'm working on an idea which would require a long-running task to complete at the time the user logs off, I know it's possible to delay the logoff but I was hoping to find a way to run the task as part of the logoff, something like when Windows synchronises offline folders (not sure if that's exactly the right term as I am working from memory here). Does anyone have any ideas? Thanks
Hi, You failed to mention what type of application you are developing. Assuming that you have a usermode application I would recommend returning FALSE to the WM_QUERYENDSESSION message[^]. However if you are developing a windows service; Here is a previous thread which covers the topic: http://www.codeproject.com/Messages/3244431/Re-Delaying-Shutdown-through-windows-service-and-e.aspx[^] Best Wishes, -David Delaune
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Hi, You failed to mention what type of application you are developing. Assuming that you have a usermode application I would recommend returning FALSE to the WM_QUERYENDSESSION message[^]. However if you are developing a windows service; Here is a previous thread which covers the topic: http://www.codeproject.com/Messages/3244431/Re-Delaying-Shutdown-through-windows-service-and-e.aspx[^] Best Wishes, -David Delaune
*click* Good Answer. :)
“Follow your bliss.” – Joseph Campbell
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Hi, You failed to mention what type of application you are developing. Assuming that you have a usermode application I would recommend returning FALSE to the WM_QUERYENDSESSION message[^]. However if you are developing a windows service; Here is a previous thread which covers the topic: http://www.codeproject.com/Messages/3244431/Re-Delaying-Shutdown-through-windows-service-and-e.aspx[^] Best Wishes, -David Delaune
Thanks for the reply, it is a user mode application and I know I can prevent shutdown by returning false for WM_QUERYENDSESSION but that keeps the logged in session alive, what I want to do is to run the code during the logoff, effectively after the user has been logged off. For example, when you a running Windows XP on a domain and you have offline file enabled, you will see the synchronisation window appear during the logoff to sync any remaining files back to the domain controller, I'm trying to achieve something like this. The app does not have to remain a user mode app, it could quite easily become a service if that is required but preventing the logoff is not what I'm trying to achieve. Thanks.
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Thanks for the reply, it is a user mode application and I know I can prevent shutdown by returning false for WM_QUERYENDSESSION but that keeps the logged in session alive, what I want to do is to run the code during the logoff, effectively after the user has been logged off. For example, when you a running Windows XP on a domain and you have offline file enabled, you will see the synchronisation window appear during the logoff to sync any remaining files back to the domain controller, I'm trying to achieve something like this. The app does not have to remain a user mode app, it could quite easily become a service if that is required but preventing the logoff is not what I'm trying to achieve. Thanks.
__DanC__ wrote:
Thanks for the reply, it is a user mode application
Usermode applications are limited in their ability to delay/prevent shutdown. You are basically limited to what I described in my previous posts. I believe that you have 5 seconds to respond to the WM_QUERYENDSESSION so you might be able to perform some last-second tasks.
__DanC__ wrote:
For example, when you a running Windows XP on a domain and you have offline file enabled, you will see the synchronisation window appear during the logoff to sync any remaining files back to the domain controller, I'm trying to achieve something like this.
Have you considered using Logon/Logoff[^] or Startup/Shutdown[^] scripts? This is typically what an administrator would use to execute something on shutdown/logoff. Best Wishes, -David Delaune
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__DanC__ wrote:
Thanks for the reply, it is a user mode application
Usermode applications are limited in their ability to delay/prevent shutdown. You are basically limited to what I described in my previous posts. I believe that you have 5 seconds to respond to the WM_QUERYENDSESSION so you might be able to perform some last-second tasks.
__DanC__ wrote:
For example, when you a running Windows XP on a domain and you have offline file enabled, you will see the synchronisation window appear during the logoff to sync any remaining files back to the domain controller, I'm trying to achieve something like this.
Have you considered using Logon/Logoff[^] or Startup/Shutdown[^] scripts? This is typically what an administrator would use to execute something on shutdown/logoff. Best Wishes, -David Delaune
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Thanks for the tip, I'll have a look into the scripts and see if they can do what I need. I've just discovered SCM notifications which look promising although I haven't read enough about them to know if they can do what I want yet.
__DanC__ wrote:
I've just discovered SCM notifications which look promising
Yeah, you will have some additional time I think... 20 seconds when you handle the SERVICE_CONTROL_SHUTDOWN message. You can keep posting STOP_PENDING to the SCM for some additional time. Best Wishes, -David Delaune