Hello everyone First,i ma really sorry for my terrible English. In my application,there are many peripherals device indicators, When one device working smoothly,the corresponding indicator will glimmering with green(color);but when the device meet some exception error,or broken down, the corresponding indicator will glimmering with red(color). In a word,it works like a radio button,but it is glimmering,and the indicator's color changed. I did not know how to achieve that,i need your help! Any help would be much appreciated! _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list