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I was able to make a connection in Interface Builder from a TextField to my Controller that invokes a certain action whenever the text in the field is changed and it loses focus. Is there a way to invoke this same action when the text in a TextView is changed?

Implement the NSTextView - (NSRange)textView:(NSTextView *)aTextView willChangeSelectionFromCharacterRange:(NSRange)oldSelectedCharRange toCharacterRange:(NSRange)newSelectedCharRange delegate method.

i actually found it more useful to use (void)textDidEndEditing:(NSNotification *)aNotification