Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!decwrl!shelby!Portia!Jessica!rick
From: rick@Jessica.stanford.edu (Rick Wong)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Quirk of LSC with Debugger on
Message-ID: <1211@Portia.Stanford.EDU>
Date: 30 Mar 89 23:36:45 GMT
References: <3986@ece-csc.UUCP>
Sender: USENET News System <news@Portia.stanford.edu>
Reply-To: rick@Jessica.stanford.edu (Rick Wong)
Organization: Stanford University
Lines: 20


In article <3986@ece-csc.UUCP> jnh@ece-csc.UUCP (Joseph Nathan Hall) writes:
>I've noticed that when I am running a project application inside LSC, with
>the debugger on, that the pulldown menus will only stay "pulled down" for
>so long and tend to vanish after an indeterminate period of time, as if I
>had lifted the mouse button.  (The highlighted item is NOT selected,
>however.)
>
>Rich, or whoever, any ideas what's going on here?
>

I have had similar problems with mouse-tracking loops that use the Toolbox
Event Manager routines (StillDown, GetNextEvent, EventAvail).  My pro-
gram will merrily track the mouse, and then exit its tracking loop as if
it got a mouseUp.  Strangely, or not so strangely, this doesn't happen if
I use the lower-level OS Event Manager routines (GetOSEvent, OSEventAvail).

Rick Wong
Stanford University
rick@jessica.stanford.edu