Using Programming Languages other than VBA

Sub Example_UCSIconAtOrigin()
	' This example toggles the setting of UCSIconAtOrigin.

	Dim viewportObj As AcadViewport

	' Set the viewportObj variable to the activeviewport
	Set viewportObj = ThisDrawing.ActiveViewport

	' Make sure the UCS Icon is on, and a new UCS is defined.
	' The new UCS defines the origin for the icon. When the icon
	' is not displayed at the origin, it is displayed at the
	' lower-left corner of the display.
	Dim ucsObj As AcadUCS
	Dim origin(0 To 2) As Double
	Dim xAxisPoint(0 To 2) As Double
	Dim yAxisPoint(0 To 2) As Double
	origin(0) = 2: origin(1) = 2: origin(2) = 0
	xAxisPoint(0) = 3: xAxisPoint(1) = 2: xAxisPoint(2) = 0
	yAxisPoint(0) = 2: yAxisPoint(1) = 3: yAxisPoint(2) = 0
	Set ucsObj = ThisDrawing.UserCoordinateSystems.Add(origin, xAxisPoint, yAxisPoint, "UCS1")
	ThisDrawing.ActiveUCS = ucsObj
	viewportObj.UCSIconOn = True

	' Display the current setting of UCSIconAtOrigin
	MsgBox "UCSIconAtOrigin is: " & IIf(viewportObj.UCSIconAtOrigin, "On", "Off"), , "UCSIconAtOrigin Example"

	' Toggle the setting of UCSIconAtOrigin
	viewportObj.UCSIconAtOrigin = Not (viewportObj.UCSIconAtOrigin)

	' Reset the active viewport to see the change
	ThisDrawing.ActiveViewport = viewportObj

	MsgBox "UCSIconAtOrigin is now: " & IIf(viewportObj.UCSIconAtOrigin, "On", "Off"), , "UCSIconAtOrigin Example"

End Sub