src/clfswm.lisp (main-mode: configuer request): Call *root-size-change* hook on each root size change. This let CLFSWM refresh background wallpaper on root size changes.

src/xlib-util.lisp (handle-event): Ignore synchronous xlib window-error and drawable-error in event handler. contrib/clfswm: Dump different image from different installation path.

contrib/toolbar.lisp (toolbar-adjust-root-size): Takes care of multiple toolbar on the same root edge.

contrib/volume-mode.lisp: Add mouse buttons actions in volume mode. Add a volume button toolbar module.

contrib/toolbar.lisp: Add a clickable label module for toolbar. Add a clickable entry to open the CLFSWM main menu. * src/clfswm-menu.lisp (open-menu): Prevent to reopen an opened menu. Fixe a but with negative selected-item.

contrib/toolbar.lisp (toolbar-module-text): Print a formatted text at module position centered in toolbar. src/xlib-util.lisp (optimize-event-hook): Remove unused event hooks.

src/xlib-util.lisp (handle-event): Add an additional hook event system to handle events in contrib code.