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From: stew@endor.harvard.edu (Stew Rubenstein)
Newsgroups: net.micro.mac
Subject: Re: SetEventMask Buggy?
Message-ID: <387@husc6.HARVARD.EDU>
Date: Sun, 12-Oct-86 23:15:04 EDT
Article-I.D.: husc6.387
Posted: Sun Oct 12 23:15:04 1986
Date-Received: Mon, 13-Oct-86 06:04:56 EDT
References: <7819DMB@PSUVMA>
Sender: news@husc6.HARVARD.EDU
Reply-To: stew@endor.UUCP (Stew Rubenstein)
Organization: Aiken Computation Lab, Harvard University
Lines: 21

In article <7819DMB@PSUVMA> DMB@PSUVMA.BITNET writes:
>
>   Anyone have this problem?
>     You try to set the event mask to something other than what it is and
>     it crashes the system?
>
>    Specifically SetEventMask(EveryEvent);

You didn't say what development environment you are using, but I bet it's
Lightspeed C.

This is a known bug.  Their SetEventMask uses a MOVE.L where it should
use a MOVE.W.  You can 1) patch the MacTraps library (using FEdit,
Search for: 225F 21DF 0144 4ED1
Change to:  225F 31DF 0144 4ED1
) or 2) Use a line like
	SysEvtMask = EveryEvent;  /*  SysEvtMask is a lomem global defined
					in EventMgr.h */
or 3) Wait for the new version of LightSpeed C due out at the end of the month.

Stew