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How to prevent a specific key such as backspace key functioning from TextField editable field, preventDefault does not seem to work:
public function handleEvents(evt:KeyboardEvent):void { if (evt.type == KeyboardEvent.KEY_UP) { if (evt.keyCode==8){ evt.preventDefault () ; } }
I recommend listening for the KEY_DOWN event if anything, but likely that won’t work either. IIRC these type of events are a bit special and you can’t really stop them. What I suspect you need to do is to store a copy of the text and whenever you detect a change you don’t like just set it back to your stored version.