I have a MDI type of application and under certain circumstances I would like to alert the user to a particular JInterframe and wondered if this could be done through some kind of selected/focus on, off sequence. Failing that changing the colour of the title bar and then back again. I've tried and failed miserably with .setVisible / .setSelected / .setEnabled. I found a routine that would let me introduce a 1 second delay between changes of the properties just in case it was all happening too quickly but without success. Has anyone done something like this and if so could the give me a pointer in the correct direction.