Q When I call FrontWindow from within a VBL task, my system occasionally
freezes at this call. Is there any chance that it moves memory?
A No, but FrontWindow is not reentrant. It's been patched out since
MultiFinder, and ought to be on the list of routines that shouldn't be called
at interrupt time. You'll have to come up with another method of getting the
front window from your VBL task. You may want to keep a shadow copy of your
application's window list in your application global area where your VBL task
can get to it.
[Sep 15 1995]
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