Re: XPL early programming decision - whether to RC loop or custom .kbd

["Young For Life Products, Ltd" contact@xxxxxxxx]

Carl, this is brilliant, and completely unknown to me. Thanks. You just
raised my XPL I.Q. fourty points.

Charles

----- Original Message -----
From: Carl Distefano 
To: 
Sent: Thursday, November 08, 2001 5:15 PM
Subject: Re: XPL early programming decision - whether to RC loop or custom
..kbd


> ≪ Ah! End of wondering! Boy, am I glad I asked. RC loops
> it is. ≫
>
> If you want to discard whatever action the user has
> assigned to a given key and substitute your own, don't
> use . Use  in conjunction with . 
> captures the first character or function call assigned to
> a key and discards the rest; if you direct  to a
> Save/Get ( *entire* .KBD file assignment associated with that key.
> You can then do whatever you want with the keystroke.
> Typically, you use the key code () of the pressed
> key to branch to different parts of your program, or to
> disable the keystroke altogether. Below, for instance,
> the program responds to Escape or Enter but nothing else:
>
>  ==1>;*;
> ==28!==104> Enter>;*;
> 
>
> Note that pressing Escape or Enter above has no effect
> other than eliciting the message "You pressed this key".
>
> In contrast,  captures the first character or
> function assigned to a key, but *allows any subsequent
> characters or functions in the key assignment to execute*
> -- unless you loop around and continue to capture them
> (something  doesn't allow).  is appropriate when
> you want to capture and *give effect to* the user's
> assigned key assignments. When you want to suppress them
> and substitute your own actions, use .
>
> --
> Carl Distefano
> cld@xxxxxxxx
> http://users.datarealm.com/xywwweb/