Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-pcd!hpcvlx!rodman
From: rodman@hpcvlx.cv.hp.com (Steve Roderick)
Newsgroups: comp.windows.x.motif
Subject: Re: How does one establish a destroy function within an application?
Message-ID: <110630010@hpcvlx.cv.hp.com>
Date: 28 Sep 90 19:29:50 GMT
References: <1990Sep13.190248.21038@media.uucp>
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Lines: 24

/ hpcvlx:comp.windows.x.motif / arthur@media.uucp (Art Poley) / 12:02 pm  Sep 13, 1990 /
This is most likely something that should be added to the Frequently Asked
Questions list.  The question being, How does one implement a destroy function
similar to SunView's notify_interpose_destroy_func?  This function would be
called whenever the user quits the window (most likely from the window 
menu).  Note that the implementation should work on a variety of window 
managers (mwm, twm, etc.).

I've noticed that mwm seems to send an XClientMessageEvent to the application.
The client message has an Atom name of WM_PROTOCOLS (found via XGetAtomName on
the message_type field of the message).  Twm, on the other hand, notes within
its documentation that twm will send a WM_DELETE_WINDOW if the application has
requested it through the WM_PROTOCOLS property.  How does one do this?

I'd appreciate anyones comments on how one goes about registering a destroy
function. 

Thanks!

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