[xmonad] Problem about toggleBorder and copyToAll.

Hi, I use this code to deal with my clock window. manageHook_ :: ManageHook manageHook_ = composeAll [ className =? "Clock" --> (do w <- ask liftX $ toggleBorder w doCenterFloat) ] Well, it does not work as expected. The window still has a border (which is very slight, like using an alpha channel or what), and could receive focus. Was the code wrong? Also, how to put copyToAll to this code? Thanks. -- 竹密岂妨流水过 山高哪阻野云飞