Disable "Unlock Widgets" from the panel

[Duncan]

Dotan Cohen posted on Wed, 29 Sep 2010 21:14:31 +0200 as excerpted:

> I have an elderly user who is constantly unlocking and destroying his
> KDE 4 panels. I disabled the right-click on the desktop to prevent 90%
> of the problem, but how can one disable right-click on the panel? Or at
> least to remove the "Unlock Widgets" menu item from there?

These first two aren't thru kde4 itself, but here are a couple ideas:

1) If he can't properly distinguish right- and left-click (or can, but 
simply doesn't have that level of motor control any more) either get him 
an "Apple-style" single-button mouse or consider configuring xorg/hal to 
treat the buttons the same -- as a left-click.

2) Consider changing the permissions on the files in question to read-
only.  Plasma will likely still let him alter the in memory running 
version, but restarting plasma will then return him to an as-new config.  
I'd start with $KDEHOME/share/config/plasma* and (recursively) with 
$KDEHOME/share/apps/plasma*.  Leaving them as his ownership is likely 
fine, just set them read-only.  Of course, you can change the ownership 
(on the containing dirs too) to root or something, if desired, and ensure 
he has only read perms, to really make them read-only, but that wouldn't 
appear to be necessary, as from what I gather he's not doing it 
deliberately.

Also, as a helpful hint, from kde 4.5, the panel setup is now scripted, 
and you can create custom "default" panels if desired, so if he messes it 
up, at least it's easier to rebuild -- simply choose new panel, and choose 
the customized one instead of empty or the normal default.  It's also 
possible to clone activities, which sort of allows making a backup as 
well, tho that's a bit different.

To directly answer your question, I don't see any way (which isn't the 
same as saying there's not one) to directly remove that action except by 
modifying source.  Of course, given that KDE is freedomware, that's always 
an option.

Another (advanced level, and more something to do as a last resort with 
servantware you don't have the sources to) workaround that could work or 
help...  Set the panel to windows-can-cover, and create a transparent 
overlay app that absorbs input you don't want to pass on, while passing on 
input that you do, to the underlying panel.  Then use window controls to 
force it to position at the correct location, go borderless, maybe always-
on-top, etc.

-- 
Duncan - List replies preferred.   No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master."  Richard Stallman

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