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Re: utilizing the Scroll key



On Sun, Mar 20, 2011 at 01:20:13PM -0400, Gregory Seidman wrote:
> On Sun, Mar 20, 2011 at 02:58:33PM +0100, lee wrote:
> > I would like to use the scroll key to switch the function of the Del
> > key on the numpad so that pressing the Del key on the numpad either
> > produces a comma (",") or a colon ("."), depending on the state of the
> > Scroll key. There?s even a LED on the keyboard to display the state of
> > the Scroll key, the LED doesn?t light when pressing the Scroll key.
> > 
> > How would I do this?
> 
> You'll need some way of triggering execution on a keypress.

Ok, I´ve made the following script and bound it to the Scroll_Lock
key:


#!/bin/sh
#
# switch keyboard layout between comma and period...
#

INDICATOR="/home/lee/tmp/.keyboard-state"


if [ ! -e $INDICATOR ]; then
    echo "0" > $INDICATOR
else
    STATE=$(cat $INDICATOR)
fi

if [ $STATE -eq "0" ]; then
    xmodmap -e "keycode  91 = KP_Delete KP_Separator KP_Delete KP_Separator"
    echo "1" > $INDICATOR
    xset led 3
else
    xmodmap -e "keycode  91 = KP_Delete KP_Decimal KP_Delete KP_Decimal"
    echo "0" > $INDICATOR
    xset -led 3
fi


You can modify this to change several keys at the same time or to
switch the whole keyboard layout by loading different Xmodmaps. By
writing different states (1, 2, 3 ...) to the INDICATOR file, you can
modify it to switch between as many layouts as you like.

You may need to use different LED numbers with xset, depending on your
hardware (and probably your keyboard layout). In my case, no. 3 seems
the be the only LED xset can set (perhaps I don´t have Caps_Lock at
all in my layout).

Perhaps someone besides me has use for this :) Still, I´d like a more
elegant solution than this ...


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