Update Method (INDockZone)
Updates the zone's state in the zones tree. The default processing will check whether the zone is empty and if so will disposes it. The method will recursively call parent's Update method.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2