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In article <BOSCH.92Mar14121250@moebius.loria.fr> bosch@loria.fr (Guido Bosch) writes:

Did anybody succeded in using the SKY mouse package with Epoch 4?
I loaded the SKY mouse package for Epoch 3.2 but it complained with

	"Symbol's value as variable is void: drag-button"

whenever I click with the mouse.

	(setq drag-button drag-zone) works for me,
	but the guys at UIUC are going to be releasing something like
	that as standard in the full release of Epoch 4 (as well as
	things like a standard highlighting package).

Brook
--
Brook Conner		| Klacktoveedsedstene
Brown Computer Graphics	| Fortune sez: Brook's Law -- Adding manpower to a late
dbc@cs.brown.edu     	|  	software project makes it later
uunet!brunix!dbc dbc@browncs.bitnet   Box 1910 Brown U Prov RI 02912

bosch@loria.fr (Guido Bosch) writes:

Guido> Did anybody succeded in using the SKY mouse package with Epoch 4?  I
Guido> loaded the SKY mouse package for Epoch 3.2 but it complained with

Guido> "Symbol's value as variable is void: drag-button"

Guido> whenever I click with the mouse.

Yes, this is because with the release of Epoch 4.0 beta buttons were renamed
to zones.  I patched epoch-mouse-base to take these name changes into account,
and fixed another small bug that crept in between 3.2 and 4.0 .  I posted the
diffs to the epoch-design list, but didn't post them here.  They follow at the
end of this message.

Tom

#! /bin/sh
# This is a shell archive.  Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file".  To overwrite existing
# files, type "sh file -c".  You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g..  If this archive is complete, you
# will see the following message at the end:
#		"End of shell archive."
# Contents:  epoch-mouse-base.diff
# Wrapped by tree@newton on Wed Mar 18 10:59:09 1992
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f 'epoch-mouse-base.diff' -a "${1}" != "-c" ; then 
  echo shar: Will not clobber existing file \"'epoch-mouse-base.diff'\"
else
echo shar: Extracting \"'epoch-mouse-base.diff'\" \(2818 characters\)
sed "s/^X//" >'epoch-mouse-base.diff' <<'END_OF_FILE'
X*** epoch-mouse-base.el.orig	Mon Feb  4 18:57:40 1991
X--- epoch-mouse-base.el	Wed Feb 19 09:59:43 1992
X***************
X*** 15,18 ****
X--- 15,24 ----
X  ;;;*                   rebinds mouse-keys and set C-h z to mouse help.
X  ;;;* HISTORY:
X+ ;;;*  Feb 19 08:23 1992 (tree@uvm.edu): made appropriate changed to function
X+ ;;;*     names to coincide with the renaming of epoch buttons to zones
X+ ;;;*     (Epoch 4.0b0).
X+ ;;;*  Oct 31 12:06 1991 (tree@uvm.edu): made a minor modification for Epoch 4.0
X+ ;;;*     alpha (PL1) to explicitly define the style for highlighting
X+ ;;;*     (mark-region).
X  ;;;*  Jan 25 17:57 1991 (hws): check mouse handling also when thrown out of
X  ;;;*     motion handling.
X***************
X*** 181,185 ****
X  	  (save-excursion-info)
X  	  (goto-char (car arg))
X! 	  (if (null drag-button) (set-mouse-marker))
X  	  (mark-region (mark) (point))
X  	  (extend-mouse-drag arg)
X--- 187,191 ----
X  	  (save-excursion-info)
X  	  (goto-char (car arg))
X! 	  (if (null drag-zone) (set-mouse-marker))
X  	  (mark-region (mark) (point))
X  	  (extend-mouse-drag arg)
X***************
X*** 197,201 ****
X  	      (progn
X  		(setq mouse::downp nil)
X! 		(mouse::copy-button drag-button)
X  		(goto-char (car arg)))
X  	    (while (not done)
X--- 203,207 ----
X  	      (progn
X  		(setq mouse::downp nil)
X! 		(mouse::copy-zone drag-zone)
X  		(goto-char (car arg)))
X  	    (while (not done)
X***************
X*** 214,217 ****
X--- 220,231 ----
X  		       (current-screen))))
X    
X+ ;;; This was hacked by Tree, 21.10.91 to work with Epoch4.0a1.
X+ ;;; Evidently we need to explicitly set the style to be used for
X+ ;;; underlining in epoch::mark-region.  This seems to work.
X+ (setq underline-style (epoch::make-style))
X+ (epoch::set-style-foreground underline-style (foreground))
X+ (epoch::set-style-background underline-style (background))
X+ (epoch::set-style-underline underline-style (foreground))
X+ 
X  (defun mark-region (from to)
X    "Mark the current region and put the region contents into
X***************
X*** 219,231 ****
X    ;; mark only if necessary
X    (when (/= from to)
X!     (cond (drag-button
X! 	   (epoch::move-button drag-button from to))
X  	  (t
X! 	   (setq drag-button (epoch::add-button from to 1 nil))))
X      (epoch::redisplay-screen)))
X  
X  (defun forget-region ()
X!   (epoch::delete-button drag-button)
X!   (setq drag-button nil))
X    
X  (fset 'get-cut-buffer (function epoch::get-cut-buffer))
X--- 233,245 ----
X    ;; mark only if necessary
X    (when (/= from to)
X!     (cond (drag-zone
X! 	   (epoch::move-zone drag-zone from to))
X  	  (t
X! 	   (setq drag-zone (epoch::add-zone from to underline-style nil))))
X      (epoch::redisplay-screen)))
X  
X  (defun forget-region ()
X!   (epoch::delete-zone drag-zone)
X!   (setq drag-zone nil))
X    
X  (fset 'get-cut-buffer (function epoch::get-cut-buffer))
END_OF_FILE
if test 2818 -ne `wc -c <'epoch-mouse-base.diff'`; then
    echo shar: \"'epoch-mouse-base.diff'\" unpacked with wrong size!
fi
# end of 'epoch-mouse-base.diff'
fi
echo shar: End of shell archive.
exit 0
--
                 \        Systems Programmer --- EMBA Computer Facilty
Thomas Emerson    \      University of Vermont, Burlington VT 05405 USA
 tree@uvm.edu     /\        "Magic is real, unless declared integer"
                 /  \            (in-package "std-disclaimer")