[Haskell-cafe] How to create a background program that monitors input (linux)

[Brandon Allbery]

On Tue, Apr 29, 2014 at 11:19 AM, EatsKittens <temporalabstraction at gmail.com
> wrote:

> Yes, from within the X server. I've used Xlib in the past but this seemed
> mostly limited to window management and keypresses when a specific terminal
> in which a program is running has focus. I never came across a way to
> simply monitor arbitray keypresses from a background program and take
> action depending on them. For instance running a system command whenever
> ctrl+alt+r is pressed.
>

You're looking for passive key grabs,
http://hackage.haskell.org/package/X11/docs/Graphics-X11-Xlib-Misc.html#v:grabKey(XGrabKey(3)
for Xlib manpage).

-- 
brandon s allbery kf8nh                               sine nomine associates
allbery.b at gmail.com                                  ballbery at sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net
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