Fires when the mouse cursor moves over a visible unit. Fires both when mousing over units in the 3D world or when mousing over secure frames whose unit attribute refers to a unit in the player's area of interest.
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.