libxfce4ui: libxfce4ui (Xfce widget library) libxfce4ui: libxfce4ui: This is libxfce4ui, the replacement of the old libxfcegui4 library. libxfce4ui: It is used to share commonly used Xfce widgets among the Xfce libxfce4ui: applications. libxfce4ui: libxfce4ui: libxfce4ui: libxfce4ui: libxfce4ui: libxfce4ui: