The higher the priority the farther outside the docking area is placed.
Any control that implements IDockingArea and returns a PriorityLevel > 0 will be placed outside of all docked controls that don't implement IDockingArea.
Note: Controls that implement IDockingAreaEx and return a IDockingAreaEx.Position of Front will be positioned at the highest z-order positions in the containing control.
Note: This interface is used by the DockingAreaManager when a container has been registered using the DockingAreaManager.RegisterDockingAreaParent.
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
IDockingArea Interface
IDockingArea Members
PRIORITY_LEVEL_DOCKED_WINDOW Field
PRIORITY_LEVEL_UNPINNED_TAB_AREA_VERTICAL Field
PRIORITY_LEVEL_UNPINNED_TAB_AREA_HORIZONTAL Field
PRIORITY_LEVEL_TOOLBAR_VERTICAL Field
PRIORITY_LEVEL_TOOLBAR_HORIZONTAL Field
PRIORITY_LEVEL_STATUSBAR Field
DockingAreaManager Class