Control workspaces on different screens (in xinerama mode).

This module provides an easy way to control, what you see on other screens in xinerama mode without having to focus them. Put this into your xmonad.hs:

import XMonad.Actions.OnScreen

Then add the appropriate keybindings, for example replace your current keys to switch the workspaces with this at the bottom of your keybindings:

    ++
    [ ((m .|. modm, k), windows (f i))
      | (i, k) <- zip (workspaces conf) ([xK_1 .. xK_9] ++ [xK_0])
      , (f, m) <- [ (viewOnScreen 0, 0)
                  , (viewOnScreen 1, controlMask)
                  , (greedyView, controlMask .|. shiftMask) ]
    ]

This will provide you with the following keybindings:

• modkey + 1-0: Switch to workspace 1-0 on screen 0
• modkey + control + 1-0: Switch to workspace 1-0 on screen 1
• modkey + control + shift + 1-0: Default greedyView behaviour

A more basic version inside the default keybindings would be:

       , ((modm .|. controlMask, xK_1), windows (viewOnScreen 0 "1"))

where 0 is the first screen and "1" the workspace with the tag "1".

For detailed instructions on editing your key bindings, see the tutorial.