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.NET Forum / Windows Forms / WinForm General / April 2005Checking for logout when closing a form?
I've written an app that minimises to the system tray when the 'close' button is clicked (I'm setting the Cancel flag in my formname_Closing event handler). This works fine until you try to logout of Windows - the logout is unable to stop my app! Is there any way to check whether the user is logging out/Windows is shutting down - or am I barking up the wrong tree? Any pointers gratefully received. Andy Odd!!!, Can I just check, are you saying that if you shutdown windows it works but not when you log off, or neither works. Simon Both logout and shutdown don't complete until I exit my app! All I'm doing in my form's Closing event handler is setting the Cancel flag to True and then calling the Hide() method. I would have thought that Windows closing down or logging out would have automatically 'overruled' this.... > Odd!!!, > > Can I just check, are you saying that if you shutdown windows it works > but not when you log off, or neither works. > > Simon Ah ok, Setting the CancelEventArgs.Cancel to true will cancel closing the form. Maybe its got to do with the fact that windows tries to close it, you don't let Windows do that and then Hide the form (which of course means its still running). Is there any reason to set the Cancel flag to true and if so (for example you need to do some cleaning up first), do your cleanup and then Close the form instead of hiding it. Make sense? Simon Rigby Simon - thanks for the response. The idea was that when the user clicks the form's close button, the app minimises to the system tray - a bit like MSN Messenger. To implement this I added the 'Closing' event handler (I was hoping this would work similar to the old 'QueryUnload' event from my VB6 days....). In operation, it works fine - it just has this unfortunate side effect! > Ah ok, > [quoted text clipped - 8 lines] > > Simon Rigby ah of course, yes sorry you did mention that. Hmm, I'll have a play and get back to you. Simon Hello, Andy: Maybe you can handle the Microsoft.Win32.SystemEvents.SessionEnding event to know wheter the system is shutting down. In the documentation for this event there is a sample of how to override the WndProc to achieve the same functionality. Regards. | I've written an app that minimises to the system tray when the 'close' | button is clicked (I'm setting the Cancel flag in my formname_Closing event [quoted text clipped - 5 lines] | | Andy Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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