Path: utzoo!utgpu!jarvis.csri.toronto.edu!csri.toronto.edu!halpern
Newsgroups: comp.sys.mac.programmer
From: halpern@csri.toronto.edu (Charles Halpern)
Subject: THINK C bug
Message-ID: <1989Aug6.155637.11270@jarvis.csri.toronto.edu>
Organization: University of Toronto, CSRI
Date: 6 Aug 89 19:56:37 GMT


I am using Think C 3.02, and System 6.0.2 on a SE.  I have observed
the same bug on a Mac II.

This bug is easy to repeat, use any of the demo programs.

This is the bug: when a project is running with the Debugger, and
you hold the mouse button down, say while making a menu choice, after
some random amount of time (usually 5 seconds to 2 minutes) the
application will act as if mouse button is up (making an unintended
menu choice, for example).

I am NOT lifting my mouse button. 

This causes some trouble with the program I am writing. In the course
of dragging out rectangles, the final rectangle is often drawn before
the mouse button is lifted.

I am using the function StillDown in a tight loop.  I have verified 
that no MouseUp event is generated.  It's just that StillDown stops
being true prematurely.

Have others encountered this problem?
Is it fixed in 4.0?

Everything works fine without the Debugger.