When the RightToLeft property is set to True, the tree control will support right-to-left reading where the tree hierarchy is displayed on the right hand side of the control.  Columns are displayed from right to left, so column 0 is shown on the right side, with column 1 to its left, and so forth.  The vertical scroll bar is positioned along the left edge of the control.

Right-to-left reading support is only supported by certain international Windows versions, such as Hebrew and Arabic Windows.

All tree control attributes, properties and methods are fully supported when right-to-left reading support is used.  In this documentation, the terms "left" and "right" should be reversed when right-to-left reading support is used.

In a split tree control when right-to-left reading support is used, the tree control pane containing the hierarchy is displayed on the right side.  Normally, the hierarchy is shown in the left pane.

Using right-to-left reading support is transparent to the application, but column alignment should be adjusted by the application.