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From: osborn@ux1.lbl.gov (James R Osborn)
Newsgroups: comp.sys.mac.programmer
Subject: Re: UpdateEvt question
Message-ID: <14228@dog.ee.lbl.gov>
Date: 13 Jun 91 06:13:09 GMT
References: <6446@ns-mx.uiowa.edu>
Reply-To: osborn@ux1.lbl.gov (James R Osborn)
Organization: Lawrence Berkeley Laboratory
Lines: 57
X-Local-Date: Wed, 12 Jun 91 23:13:09 PDT

In article <6446@ns-mx.uiowa.edu> wolf@piquet.cipl.uiowa.edu (Michael J. Wolf) writes:
>Situation:
>
>	Several windows opened for my application
>	Using some for copying between on offscreen grafport
>
>Problem:
>
>	When a dialog pops up, then is closed, the obscured
>portion of the windows are also erased, so I need to update
>them.  I catch the update event, check which window via
>FindWindow(Where).  Then use if structure to see which 


NO!  You are supposed to use "(WindowPtr) theEvent.message"
as the pointer to the window that needs updating.  Most likely
all of your problems are due to the fact that you are not doing
the update for the proper window.  The window manager just keeps
posting update events until your strange way of doing it finally
gets around to updating the proper window.


>window to update (as each may be different).  Then I do
>what is need to update the window.  
>
>Catch:
>
>	The window only actually gets updated when the mouse
>passes into the windows content region.  And it will keep
>repeating the update until the mouse is moved out.  This 
>occurs even when the window doesn't need updating any longer.
>
>I call Begin and End update surrounding thje code that does
>the update for each window.  So why is the update event not
>being thrown out after I do the update, or likewise, why is
>it continually getting an update while the mouse is in the 
>window?
>
>Should I be finding the window to update differently?

Yes, see above.

>
>Thanks in advance.
>
>Michael

You're welcome.

-- James

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