UIHANDLER OnKeyUp

Fires when releasing a key. (self, key)

Arguments

 * self: - The widget receiving input.
 * key: - The key represented by a UTF-8 character or a control word such as "ESCAPE", "BACKSPACE", and "LSHIFT".

Details

 * Usually follows when set; however, blocked by the WoW client losing focus (alt-tab) or if the OnKeyDown handler calls
 * Requires, which another Frame can block with.
 * also requires.