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From: CAH0@bunny.gte.com (Chuck Hoffman)
Newsgroups: comp.sys.mac.programmer
Subject: Unexpected Update Events
Message-ID: <11082@bunny.GTE.COM>
Date: 29 Apr 91 11:27:44 GMT
Sender: news@gte.com
Organization: GTE Laboratories, Inc.
Lines: 29


   I'm new to Mac programming, though not new to programming, and haven't 
read this list in some time, so forgive me if this subject has been 
covered recently.
   Using THINK C 4.0, and its Debugger, I've written a short program with 
three windows open.  With the Debugger, I'm finding that about every 
second there is an update event generated for one or the other of the 
second and third windows.  I get all the update events I expect; these are 
extra events, not in response to anything my program is doing.  If I 
select window 2, I get a stream of updates for 2.  If I select window 3, I 
get updates for 3.  If I select window 1, I get an update for 1 followed 
by updates for either 2 or 3, depending on which I used last.  There are 
no extra or unexpected activate or deactivate events.  There is nothing in 
any of the windows yet, because I've just begun to code the program.  I am 
running under MultiFinder.  Windows 2 and 3 have goaway boxes, which don't 
seem to have anything to do with the symptom.  The symptom would not be 
apparent to a user of the program, except that I will eventually use the 
update events to trigger redrawing of the window (even that should still 
be not apparent).
   So, where are the extra update events coming from?  My code?  System 
6.0.7 (Mac-IIcx)?  MultiFinder?  THINK C Debugger?  Virex or Disinfectant 
INIT (I'm running both)?
   Thanks in advance.

Chuck Hoffman, GTE Laboratories, Inc.    |  I'm not sure why we're here,
cah0@bunny.gte.com                       |  but I am sure that while we're
Telephone (U.S.A.) 617-466-2131          |  here, we're supposed to help
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GTE Telemail: C.HOFFMAN                  |