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From: don@BRILLIG.UMD.EDU.UUCP
Newsgroups: comp.windows.news
Subject: Two minor glitches - fixes?
Message-ID: <8709242203.AA03633@brillig.umd.edu>
Date: Thu, 24-Sep-87 22:31:51 EDT
Article-I.D.: brillig.8709242203.AA03633
Posted: Thu Sep 24 22:31:51 1987
Date-Received: Sat, 26-Sep-87 16:05:27 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
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   Date: Thu, 24 Sep 87 09:30:51 PDT
   From: Greg Earle <earle@mahendo.Jpl.Nasa.Gov>

   I've noticed two apparent glitches with NeWS related things, and am
   wondering if we can get pointers to fixes (NeWS 1.0):

   (1) Don, I load your `piemenu.ps' in user.ps and everything works
   fine, but for some reason trying to bring up the little substitute
   X menu inside an xdemo (like `xload') causes the server to choke,
   and any subsequent tries yield nothing.  Any ideas?

   [ ... ]
	   Greg Earle		earle@mahendo.JPL.NASA.GOV
	   S(*CENSORED*)t		earle%mahendo@jpl-elroy.ARPA	[aka:]
	   Rockwell International	earle%mahendo@elroy.JPL.NASA.GOV
	   Seal Beach, CA		...!cit-vax!elroy!jplgodo!mahendo!earle

Aah, yes. That's because piemenu.ps gets the XLocation and YLocation
about which to center the event returned by "currentevent", which
depends on the menu having been invoked from an event manager (started
with "forkeventmgr"). The event manager leaves the event on the stack
for "currentevent" to find later. Unfortunitly, the X10 demo uses the
older menu package, and does its own event handling to pop up its
menu, instead of using an event manager, so "currentevent" loses.

As long as currentcursorlocation returns the present cursor location
as opposed to the location of the cursor at the last event delivered,
the code has to look at the actual button event to get the correct
location to center the menu. This is crucial for mouse-ahead to work
properly.

(On a related topic, "setcursorlocation" is broken in NeWS 1.0, so the
piemenu.ps I've distributed does not "do the right thing" near the
screen edge. "The right thing" is to move the cursor by the same
offset as the menu must be moved to fit completely on the screen.
I'm using "getcursorlocation", adding the offset, and doing a 
"setcursorlocation" to move cursor by the appropriate offset.
Unfortunitly, next time you move the mouse, it jumps back to where it
was before!)

	-Don