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From: englhq@jetson.uh.edu
Newsgroups: comp.sys.mac.programmer
Subject: GrowWindow Woes, Help Please
Message-ID: <9190.2810258e@jetson.uh.edu>
Date: 20 Apr 91 11:27:10 CDT
Organization: University of Houston
Lines: 26

I'm working through the window techniques in Huxham, Burnard and Takatsuka's
USING THE MACINTOSH TOOLBOX WITH C, and I'm stuck at the GrowWindow function.
The code goes like this:

case inGrow:
     newSize=GrowWindow(whichWindow,theEvent.where,&limitRect);
     SizeWindow(whichWindow, LoWord(newSize),HiWord(newSize),0xff);
     contRgnHnd=theWindowRec.contRgn;
     tempRect=(*contRgnHnd)->rgnBBox;
     EraseRect(&tempRect);
     DrawGrowIcon(theWindow);
     break; 

What happens is, the outline of the scroll bars and size box remain in the
middle of the window. i.e. It seems that the EraseRect isn't doing what I
think it's supposed to.

The maddening part of this is that when I step through with the debugger
everything performs as advertised; tempRect has the correct coordinates
and the content region is erased just fine.

WHAT IS GOING ON HERE?? As soon as I remove the breakpoint, the window goes
back to its old tricks. Any advice is greatly appreciated. 

Duane Franklet
englhq@jetson.uh.edu