Re: Exit hooks not run at logout on w32

[Lennart Borgman]

Jason Rumney wrote:
> Lennart Borgman wrote:
> > As far as I can see the exit hooks for Emacs are not run when a user 
> > logs out from Windows 2000 or reboots the pc. I do not know however 
> > if this problem is specific to w32. It is in my opinion a serious 
> > problem that ought to be fixed before the release.
> I'm not sure they can be run reliably. The system gives Emacs (or any 
> other application) a short amount of time to exit cleanly before 
> issuing the equivalent of a kill -9. Since such hooks often involve 
> user interaction, there is no guarantee that we will finish in time, 
> so the safest thing to do is to just make sure all autosave files are 
> written before exiting so that the user can recover their session later.
I do believe it is safe to run the normal save-buffers-kill-emacs and 
the exit hooks. At least it seems so to me on Windows 2000. I am not 
sure about the details however. Maybe the Windows dialog box that shows 
up can be turned off so that you are sure a reboot is done in some 
circumstances? Then it would be best to write the autosave files first 
and then save-buffers-kill-emacs and the exit hooks.

Where is the code that discovers that WM_CLOSE has been sent to the last 
frame and that Emacs should be killed?