This has always been a sporadic bug for me, but I finally was able to 
strip out
some code that shows it each time. I don't know what a GrafPort or clip 
are but
I don't think they are relevent here. Maybe this helps. In this code if 
you comment
out the line 'grid remove $greaterLessThanEntryFr' line, the button 
labeled 'Next' is
visible. Otherwise, it's not! This is with aqua 8.4.6 on osx 10.2.8.
to run, source the file,
then press the button labeled 'Test'.
in new window there should be 2 buttons, 'back' and 'next'.

Robert Karen

Jim Ingham wrote:

>  Hi, all...
> 
>  I found at least one cause for the mysterious "sometimes one of my  
>  buttons doesn't draw" bug.  We weren't setting the GrafPort to the  
>  port of the window containing the button before we set the clip for  
>  the window.  So every so often (particularly when a button command  
>  was raising a new window or something like that) the GrafPort would  
>  still be set to the old window, and the clip would get set wrong.   
>  That meant the button didn't draw.  However, drawing the first button  
>  would set the GrafPort right a little later, so then all the other  
>  buttons would draw.
> 
>  I checked a fix for this into TOT and the core-8-4-branch.  So for  
>  folks that were seeing this bug, give either of these branches a go,  
>  and tell me if it still shows up.
> 
>  Jim
> 
> 
> 
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