All, I created this blog post [1] last year and in quite a few of my Wicket classes people ask about how to do this same thing. I can commit it to core in 1.5 / 6.0 if others think it would be useful there and don't see any problems doing so. The only problem I have with it is the limitation that is noted at the bottom of the post - that when you are doing the traversal as shown, you can only have a single instance on the page.
[1] http://www.jeremythomerson.com/blog/2011/01/catching-all-feedback-messages-that-arent-rendered-by-other-feedback-panels/ -- Jeremy Thomerson http://wickettraining.com *Need a CMS for Wicket? Use Brix! http://brixcms.org*
