Node Indicator Panel
The node indicator panel represents a region displayed at the left edge of a Tree List. The cell relating to the focused node indicates the node's state (whether it's in edit mode, has been modified, etc).
The table below lists the main properties which affect the element's appearance:
The TreeListAppearanceCollection.HeaderPanel property.
Note: the appearance settings are ignored if a Tree List is painted in WindowsXP or Office2003 style.
Custom Draw Event
The TreeList.CustomDrawNodeIndicator event.
The TreeListOptionsView.ShowIndicator option.
The TreeList.IndicatorWidth property.