Display bean differently in runtime from visual editor

I'm designing a bean which extends JComponent and would like to have
it paint differently in the NetBeans form editor than it does when I
execute it at runtime.  Is there a way to do this?  Perhaps a system
property to check to see if it is running from within an editor?

Another problem I encountered - when I paint the bean using
paintComponent() in the NetBeans for editor, it causes a
StackOverflowError and NetBeans crashes.  Am I not supposed to use
this method for repainting, or is this a NetBeans problem?

Mark McKay
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http://www.kitfox.com