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My application always runs in the background but I'm getting problems if the machine is just Shut Down without the application being closed first.
What I need to do is for the application to detect that a Shut Down or Restart in Windows has occurred so it can then close itself cleanly.
Is there a way to do this? "End of Application" command doesn't seem to work with a Shut Down/Restart.
Many Thanks,
Marc
Maybe write a value in an INI when the app is properly closed. Then when your application starts, read that value and reset it.
When I use "End of Application" commands etc these only work if I "cleanly" close the app.
However, when a Windows Shut Down is initiated and the application is still running any of the commands I use to detect and exit cleanly don't work. This would mean that I couldn't write to an ini file
Haven't tested this, but the "Close Window has been Selected" condition might work to detect a shutdown (Special Object -> Application Menu). This action intercepts closing, and usually all applications are closed this way during a shutdown. So it's possible it would be triggered while the computer was shutting down, although you would also need to sort this out from when the user closes the application via the Close button.
Of course, if the shutdown was forced (e.g. if the user held down their computer's power button), this condition wouldn't be triggered.
Thanks Jaffob - I've tried the "Close Window has been Selected" but unfortunately it doesn't detect a shutdown.
Yes, that's why in that case only I suggest you to write a value in an INI. At the next startup if that value is present in the INI it means that the app was properly closed (then reset the INI). On the contrary if that value is not present in the INI, that means that the app was NOT properly closed.Quote:
Originally Posted by madmac
I've not tried it, but I think that it will work. See the pseudo-code below:
Code:• End of application
- Write value "closed" in INI
• Start of application
+ If value "closed" is written in INI
- Write value "reset" in INI
- Do what you need when the app was properly closed
• Start of application
+ If value "closed" is NOT written in INI
- Do what you need when the app was NOT properly closed
Yes, thinking about it in more detail that could possibly work.Quote:
Originally Posted by Olivier
I'll let you know how I get on - thank you
Unfortunately, this doesn't work as I'm also using Lacewing.
I need to exit cleanly before the shut down or it just won't work.
Windows must use an event or process that it calls before a Shut Down takes place. I just need to be able to trap that event and then exit cleanly.
All ideas welcome
Is this because of the lacewing server bug that leaves you in the channel if you don't disconnect cleanly?
That's the one.
If I can detect a shut down in my client app though I can make it disconnect cleanly.
Yves has suggested using the WinMessPro object
YASO can do this.
Note it won't do it when run from MMF. You need to actually build the program as an EXE.
I didn't know the YASO object could do this. I only thought it could Abort a Shut Down.
It can do that - when it blocks a shutdown, it calls the condition "On Shutdown Aborted" :)
I'm pretty sure you have to block the shutdown to detect it though.
Yes, for MMF you must abort it. Actually, I vaguely remember making it so it ran an event when it happened, but the problem was you couldn't do much with it so I took it out. The idea was you could do some logic and then decide if you want to abort the shutdown or not.