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From: hairston@henry.ece.cmu.edu (David Hairston)
Newsgroups: comp.sys.mac.programmer
Subject: Re: keyUp events in THINK C
Message-ID: <HAIRSTON.90Dec8134818@henry.ece.cmu.edu>
Date: 8 Dec 90 18:48:18 GMT
References: <109417.276027AF@cmhgate.FIDONET.ORG>
Organization: Gaia II
Lines: 25
In-reply-to: Jennings.Jennings@f31.n343.z1.FIDONET.ORG's message of 1 Dec 90 16:28:59 GMT

[Jennings.Jennings@f31.n343.z1.FIDONET.ORG (Jennings Jennings) writes:]
[] I have been playing with the TinyEdit sample that came with THINK C 4.0.  
[] I have tried and failed to find keyUp events in
[] CSwitchboard::ProcessEvent().  I test for them right after WaitNextEvent
[] which is called with everyEvent=0xFFFF.  Can anyone suggest what might be 
[] wrong?

this comes up from time to time (although it's documented clearly in
Inside Mac, Vol. I, Ch. 8 - Toolbox Events and IM-II).

the global System Event Mask is pre-defined as:
everyEvent - keyUpMask

in order to get KeyUp posted at all you must redefine the event mask.
you can add/subtract KeyUp but it is bad karma to remove other events.

SetEventMask(everyEvent);    /* enables KeyUp */
or
SysEvtMask = everyEvent;

of course, you'll want to save the old mask and restore it when you
don't need the change ...

  -dave-  
hairston@henry.ece.cmu.edu