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From: morreale@bierstadt.scd.ucar.edu (Peter Morreale)
Newsgroups: comp.windows.x
Subject: Re: XWarpPointer revisited.....
Message-ID: <9958@ncar.ucar.edu>
Date: 17 Jan 91 03:39:09 GMT
References: <9945@ncar.ucar.edu> <100920272@hpcvlx.cv.hp.com>
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Organization: Scientific Computing Division/NCAR, Boulder, CO
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In article <100920272@hpcvlx.cv.hp.com> ben@hpcvlx.cv.hp.com (Benjamin Ellsworth) writes:
>
>> Is it simply because the user can become confused with the visual
>> effects?
>
>I think so.  The problem is that it seriously disturbs the "direct
>manipulation" paradigm.  The cursor is always attached to the
>mouse--moving the mouse moves the cursor.  When you warp the cursor, you
>have caused the cursor to move without moving the mouse.  This weakens
>the perception that the two are connected.
>

  Thanks Ben, I understand.  

  Might I ask the net community for some help in how to implement 
  re-setting the focus in an *Xt* application?

  I have read the ICCCM and and understand the premise, I just am not
  sure how to implement it.  If some kind soul could point towards
  specific routines/resources/etc, I would be very grateful.  

  This is my *first* app, and quite frankly, I *could* get away with 
  moving the pointer as the app will only be used by a very small group
  of users.  (internally)  However for my own edification, and in the
  interest of "doing things right", I would like to know how this is done.  

  My basic questions are:

      1) How does one set focus on the basic of a KeyPress?  (ie: when 
	 RETURN is detected in window A, set focus in window B?)

	  (Please note that I already have code which detects the
	  RETURN, and I know from which widget the RETURN was detected)

      2) What (if anything) need I account for when the user *does*
         manually move the mouse?  (I suspect nothing, but I'm not
	 sure...)

   Barring a small code excerpt, an Xt methodology would be fine.

   Perhaps this is simple, but from reading the X/Xt documentation, it
   escapes me.

Thanks for any and all help...
-PWM
--
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Peter W. Morreale                  email:  morreale@ncar.ucar.edu
Nat'l Center for Atmos Research    voice:  (303) 497-1293
Scientific Computing Division