Hi, I'm trying to extend XMonad.Layout.NoBorders.lessBorders modifier function. The goal is to don't draw border if there is only one window focused AND statusbar is hidden at the same time. -- status bar gets spawned by XMonad.Hooks.DynamicLog.statusBar main = xmonad =<< statusBar "xmobar" myBarPP toggleStrutsKey myConfig -- an attempt to add SetsAmbiguous instance to handle status bar visibility data MyAmbiguity = NoStatusBar deriving (Read, Show) instance SetsAmbiguous MyAmbiguity where hiddens amb wset mst wrs | NoStatusBar <- amb = wins where wins = filter (`elem` StackSet.integrate' mst) $ map fst (withoutSBar wrs) -- HERE I WOULD NEED TO CHECK IF STATUS BAR IS VISIBLE OR NOT withoutSBar = filter (\ (_, winrect) -> winrect == getScreenRect wset) getScreenRect = screenRect . StackSet.screenDetail . StackSet.current Any idea how to detect if status bar is visible or not ? Thx. David