Hi (again), Is there a way to capture a release of the modkey using e.g. the event hooks? I've tried modifying the source for debugkeyevents: http://xmonad.org/xmonad-docs/xmonad-contrib/XMonad-Hooks-DebugKeyEvents.htm... but this only captures the release of "proper" keys, not the modifiers. (E.g. pressing mod+j will generate a press and release of the j key (with information about it's modifiers), but not the press and release of the modkey). The goal is to have a tiling layout where, after selecting a window with mod+j/k, that window is promoted to master. To do this cleanly we need an event that means "the window has been chosen", for which the release of the modkey is ideal. (There is the MagicFocus layout modifier, but instead of waiting for the release of the modkey, it performs the shift after every mod+j, and needs an unintuitive window cycling policy to allow access to anything but the top two windows.) Thanks, Matt