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Subject: Re: System shutdown messages
To: cygwin AT cygwin DOT com
References: <d7122da5-24b5-7209-74a9-83d7484872ce AT cornell DOT edu> <6031de0d-846a-f006-3c1a-d2af7cfb4590 AT dronecode DOT org DOT uk>
From: Ken Brown <kbrown AT cornell DOT edu>
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Date: Thu, 12 May 2016 16:27:28 -0400
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On 5/9/2016 1:20 PM, Jon Turney wrote:
> On 09/05/2016 14:35, Ken Brown wrote:
>> A Cygwin emacs user has asked
>> (http://debbugs.gnu.org/cgi/bugreport.cgi?bug=23483) whether emacs can
>> auto-save files when he shuts down Windows from the Start Menu.  Is
>> there a way for a Cygwin process to listen for Windows system shutdown
>> messages?
>
> This seems entirely possible using the Win32 API.
>
> For emacs-w32, it's probably straightforward to handle WM_ENDSESSION in
> the message loop similarly to WM_CLOSE

This was indeed straightforward, so I went ahead and did it.  But I 
didn't try to do anything for emacs-X11 and emacs-nox because it's more 
complicated, and...

> But I'm not sure that's the best approach, or if wouldn't be more
> appropriate to arrange for SIGTERM to be sent to emacs (or whatever) by
> mintty or the X server when an WM_ENDSESSION is received...

... I hope Someone will do this.

Ken

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