Path: utzoo!mnetor!uunet!husc6!hao!ames!ucbcad!ucbvax!ZERMATT.LCS.MIT.EDU!RWS
From: RWS@ZERMATT.LCS.MIT.EDU (Robert Scheifler)
Newsgroups: comp.windows.x
Subject: Damage repair event on root window?
Message-ID: <871221081234.1.RWS@KILLINGTON.LCS.MIT.EDU>
Date: 21 Dec 87 13:12:00 GMT
References: <8712202121.AA16639@bu-cs.bu.edu>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 9

There is no mechanism defined to receive notification that window damage
has been repaired (note that it would have to be clients that generated
such notification).  In the case of the root window, if you believe that
its contents consist solely of the server-replicated background, then
any damage is guaranteed to have been repaired as a side-effect of any
action that caused the damage, and you don't need notification.  If some
client is maintaining the contents, however, you are out of luck (unless
you attempt to define some new convention, but good luck getting normal
clients to follow it).