Can I hook into UISearchBar's Clear Button?I've got a UISearchBar in my interface and I want to customise the behaviour of the the small clear button that appears in the search bar after some text has been entered (it's a small grey circle with a cross in it, appears on the right side of the search field). Basically, I want it to not only clear the text of the search bar (which is the default implementation) but to also clear some other st
