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address@hidden: tool bar icons not updated according to :active conditio

From: Richard Stallman
Subject: address@hidden: tool bar icons not updated according to :active condition]
Date: Thu, 09 Feb 2006 12:48:26 -0500

[I sent this message two weeks ago but did not get a response.]

Could someone please look at this problem, then respond?

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Mail-Followup-To: address@hidden
To: address@hidden
From: Reiner Steib <address@hidden>
Date: Mon, 23 Jan 2006 19:59:13 +0100
Organization: Dept. of Theoretical Physics, University of Ulm
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Subject: tool bar icons not updated according to :active condition
Reply-To: Reiner Steib <address@hidden>
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`gnus-group-mode-map' contains the following menu entry (see

  (easy-menu-define gnus-group-reading-menu gnus-group-mode-map ""
      ["Describe" gnus-group-describe-group
        :active (gnus-group-group-name) ...]

I.e. this menu item should be inactive[1] if the point isn't on a
group line (e.g. on non-group lines when using topics mode [2]).  In
the menu, this works correctly, i.e. the menu item is disabled
(probably because the menu is updated when clicking on "Group").

In `gnus-group-make-tool-bar' the describe-group entry is also added
to the tool bar (icon: etc/images/gnus/describe-group.xpm):

    'gnus-group-describe-group "describe-group" gnus-group-mode-map)

But after moving up/down in the group buffer (C-p/C-n), the icon is
not updated (enabled/disabled) when changing from a group to a topic
line and vice versa.

After `C-l' (or after `redraw-frame' [3]), the correct icon is
displayed.  A workaround could be to redraw the frame after every
point-motion (is there a after-point-motion-hook?).

Bye, Reiner.

,----[ <f1> f gnus-group-group-name RET ]
| gnus-group-group-name is a compiled Lisp function in `gnus-group.el'.
| (gnus-group-group-name)
| Get the name of the newsgroup on the current line.

| [ Gnus -- 6456 ]
|   [ misc -- 11 ]
|          1: nnml:test 
|         10: nndraft:drafts 
| [...]

[3] Tested with...

(global-set-key (kbd "<down>")
                (lambda (&optional arg)
                  (or arg (setq arg 1))
                  (next-line arg)
                  (redraw-frame (selected-frame))))
- -- 
      (o o)
- ---ooO-(_)-Ooo---  |  PGP key available  |  http://rsteib.home.pages.de/

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