Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!usc!jarthur!elroy.jpl.nasa.gov!zardoz.cpd.com!dhw68k!thecloud
From: thecloud@dhw68k.cts.com (Ken McLeod)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Missing update events in SFGetFile (system 7.0)
Message-ID: <1990Aug24.172212.3483@dhw68k.cts.com>
Date: 24 Aug 90 17:22:12 GMT
References: <1990Aug15.121158.813@lth.se> <1990Aug19.110544.12102@dhw68k.cts.com> <1990Aug20.143954.2276@eng.umd.edu>
Reply-To: thecloud@dhw68k.cts.com (Ken McLeod)
Organization: Wolfskill & Dowling residence; Anaheim, CA (USA)
Lines: 36

In article <1990Aug20.143954.2276@eng.umd.edu> russotto@eng.umd.edu (Matthew T. Russotto) writes:
>In article <1990Aug19.110544.12102@dhw68k.cts.com> thecloud@dhw68k.cts.com (Ken McLeod) writes:
>>the default palette and draws a color picture. Here's the problem:
>>under 7.0a9, the call to SetPalette/ActivatePalette *erases* my alert
>>window to white...anything previously drawn in the window is gone.
>> [code omitted...] 
>> Is this a known System 7 bug (I hope)?
>
>Actually, it sounds like correct behavior.  It is perfectly reasonable for
>the dialog to be erased when it is made invalid by the SetPalette call.  I
>see two easy workarounds-- move the FillRect to AFTER the if statement, or
>change the SetPalette to
>SetPalette((WindowPtr) -1L, ourPal, FALSE);
>(If you tell SetPalette to update on change of color environment, don't
>complain too much when it does :-) )

  Well, I changed the cUpdates argument in my SetPalette call to FALSE.
The behavior is still the same (window is erased to white and gets an
update event when ActivatePalette() is called). I'm not too concerned yet
(after all, 7.0a9 is a "voodoo" version :) ... just wanted to know if
anyone else had noticed this. Incidentally, it also occurs when my app
gets switched into the background: all windows in my layer are erased to
white, the foreground app's windows are updated, then my windows get their
update events and are redrawn. My app doesn't do anything color-related
when it gets a suspend or resume event, so I suspect that something about
ActivatePalette is "different" from previous System versions.

-ken

>Matthew T. Russotto	russotto@eng.umd.edu	russotto@wam.umd.edu
>][, ][+, ///, ///+, //e, //c, IIGS, //c+ --- Any questions?
-- 
==========     .......     =============================================
Ken McLeod    :.     .:    UUCP: ...{spsd,zardoz,felix}!dhw68k!thecloud
==========   :::.. ..:::   INTERNET: thecloud@dhw68k.cts.com
                ////       =============================================