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From: klee@chico.pa.dec.com (Ken Lee)
Newsgroups: comp.windows.x
Subject: Re: xlock - event mask argument to XGrabPointer
Message-ID: <2306@bacchus.dec.com>
Date: 19 Dec 89 02:22:33 GMT
References: <1989Dec19.005753.16316@smsc.sony.com> <1989Dec16.002825.10200@smsc.sony.com> <2296@bacchus.dec.com>
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Reply-To: klee@decwrl.dec.com
Organization: DEC Western Software Laboratory
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In article <1989Dec19.005753.16316@smsc.sony.com>, dce@smsc.sony.com
(David Elliott) writes:
> The question that remains is: should XGrabPointer accept a mask with
> all 1's as "all events that apply", or should it check the value and
> raise an error if it sees any events that aren't correct for that
> call?

Well, the protocol spec (p. 379 in the DP book) does specifically say
the event mask is a SETofPOINTEREVENT.  Setting bits for events not in
this set does technically violate the protocol, so servers should be
free to reject the requests.  I understand that the X11R4 sample
servers will include a bugged-mode to accept sloppy protocol.

Ken Lee
DEC Western Software Laboratory, Palo Alto, Calif.
Internet: klee@decwrl.dec.com
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