Locks the button in its highlight state. When the highlight state is locked, the button will always appear highlighted regardless of whether it is moused over.
World of Warcraft™ and Blizzard Entertainment™ are trademarks or registered trademarks of Blizzard Entertainment, Inc. in the U.S. and/or other countries. The original materials contained in the API Reference section of this website are copyright John Wiley & Sons. Other copyrights on this page are owned by their respective owners. All other content © 2008-2013 wowprogramming.com.