As with the ActiveNode property, there can be only one ActiveCell at any given time. The ActiveCell displays a focus rectangle in the user interface to indicate that navigational keyboard actions are performed as relative to that cell.
Note: The ActiveCell by definition must belong to the ActiveNode; setting the ActiveCell property will cause the value of the ActiveNode to change if the new cell belongs to a different node than that referenced by the ActiveNode property.
Note: The UltraTreeNode.ActivateCell method can be used to activate a cell without causing the creation of an UltraTreeNodeCell object.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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