From Xojo Documentation


New in 2020r1

Specifies the positions a contextual menu can appear relative to the control to which it is attached.


Enum Description
Default Always on the side to which the user's OS writing direction is set. If left to right, the menu will appear on the left. If right to left, the menu will appear on the right.
Left Always to the left of the control.
Right Always to the right of the control.