Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!apple!usc!oxy!adams.e
From: adams.e@oxy.edu (Erik Adams)
Newsgroups: comp.sys.mac.programmer
Subject: A couple of problems a beginner is having. . .
Message-ID: <42687@tiger.oxy.edu>
Date: 28 Jun 89 05:38:30 GMT
Organization: Occidental College, Los Angeles, CA  90041
Lines: 42

Howdy!

     I'm not new to programming, but I am new to programming the
Macintosh.  I am having a couple of problems that look like they
have very simple solutions, but I just can't see them.

     1.)  If I move an application window on top of a system
window (the control panel, for example), and then move it away,
the system window is _not_ updated.  Where the application window
was is now a white outline in the system window.  This seems to
occur with all desk accessories.  Currently I am not handling
updateEvents for any windows, but when I tried putting in
BeginUpdate and EndUpdate, the problem was still there.  Any
ideas?

     2.)  I can not get a scroll bar in a modal dialog to work.
Here is what I am currently doing:  I pass to ModalDialog a
pointer to a FilterProcedure.  The Filterprocedure checks to see
where theEvent is.  If theEvent is in the scroll bar, I call
TrackControl, passing it an ActionProcedure. I get, at various
times with various combinations:  nothing at all; a scroll bar
that highlights correctly but does not change its value; a scroll
bar that both hightlights and moves, but only when you mouseDown
about 16 pixels to the left; and more system crashes of varying
sorts than I care to enumerate.  The problem seem to be with
my figuring out whether or not theEvent is in the scroll bar,
but there appears to be more than just that.

     I am using LSC 2.01 on a Mac 512ke, using older (pre-6.0)
versions of the Finder and System.  (Yes I know there are newer
versions of LSC, but I can not compile when I use them:
everytime I try I get "Out of Memory" messages from LSC).

    If enough folk want, I will post my source code.
I didn't this time because, as I indicated, these look to
me like stupid mistakes which someone has probably run into
before and will know how to fix.

     Thank you in advance.

     Erik Adams
     adams.e@oxy.edu