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From: neil@cs.hw.ac.uk (Neil Forsyth)
Newsgroups: comp.sys.atari.st.tech
Subject: Re: Simulating keypress
Message-ID: <2695@odin.cs.hw.ac.uk>
Date: 8 Apr 91 08:36:29 GMT
References: <1991Apr5.151946.25763@etek.chalmers.se> <1991Apr6.000637.20676@jato.jpl.nasa.gov>
Sender: news@cs.hw.ac.uk
Reply-To: neil@cs.hw.ac.uk (Neil Forsyth)
Organization: Computer Science, Heriot-Watt U., Scotland
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In article <1991Apr6.000637.20676@jato.jpl.nasa.gov> vsnyder@jato.Jpl.Nasa.Gov 
(Van Snyder) writes:
>I'd like to get hold of keypresses.  It's easy to get hold of mouse
>motions by inserting your own handler in place of the mousevec in
>the struct returned by XBIOS' kbdvec function.  But how do you get
>hold of keypresses?  Must you intercept the keyboard packet handler
>and interpret all the packets?

If you want to know if the key is up or down then I'm afraid the answer is yes.
If you just want to catch the key (scancode and ascii) entering the keyboard
buffer then intercept the ikbdsys vector with a routine that checks the buffer
pointers before and after calling the original. If the buffer pointer has
changed then a key just entered the buffer. One use of this is to program
macros on the function keys. (ie. If F0 enteres buffer, remove it and place
something else in there)

>Thanks in advance,

Your welcome in retreat.

>vsnyder@jato.Jpl.Nasa.Gov
>ames!elroy!jato!vsnyder
>vsnyder@jato.uucp

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! Neil Forsyth                      JANET:  neil@uk.ac.hw.cs                 !
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