Path: utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!cs.utexas.edu!usc!brutus.cs.uiuc.edu!uakari.primate.wisc.edu!ames!sgi!shinobu!odin!horus.esd.sgi.com!thant
From: thant@horus.esd.sgi.com (Thant Tessman)
Newsgroups: comp.sys.sgi
Subject: Re: qdevice and stuff.........
Message-ID: <5855@odin.corp.sgi.com>
Date: 29 Mar 90 19:13:08 GMT
References: <1990Mar28.192724.26499@cunixf.cc.columbia.edu>
Sender: news@odin.corp.sgi.com
Reply-To: thant@horus.esd.sgi.com (Thant Tessman)
Organization: Silicon Graphics, Entry Systems Division
Lines: 31

In article <1990Mar28.192724.26499@cunixf.cc.columbia.edu>,
kaul@cunixa.cc.columbia.edu (Anil Kaul) writes:
> Hi,                                                                   
>    I have been trying to queue certain keys on the keyboard, but have 
> come up with a strange error:                                         
>    Whenever I press a key it seems to record two enteries in the event
> queue. It appears that one entry is for key being depressed and the
other       
> for the key while being released. Is it true or am I messing up
somewhere else?
> I would actually like to get only one entry everytime the key is
depressed.    
> Is there something I can do to avoid getting two enteries from each
key?        
>                                                                       

When you queue a button, and do:

	dev = qread(&val);

'dev' is set to the button number (as defined in "device.h"),
and 'val' is set to 1 if the button went down, and 0 if the
button went up.

If you only want ascii information from the keyboard, then
qdevice(KEYBD);  When a keyboard key is pressed, 'qread' will
set 'dev' to KEYBD and 'val' to the ascii value of the key.

Hope this helps,

thant