def window_get_icon(self, window):
        size = self.bar.cfg['icon_size']
        app = window.get_application()

        if app is not None:
            appIconName = app.get_icon_name().lower()
            if Core.ICON_THEME.has_icon(appIconName):
                pbuf = Core.ICON_THEME.load_icon(appIconName, size, gtk.ICON_LOOKUP_USE_BUILTIN)
            else:
                pbuf = window.get_icon().copy()
        else:
            pbuf = window.get_icon().copy()

        self.pixbufs[window] = pbuf.scale_simple(size, size, gtk.gdk.INTERP_BILINEAR)