Using Programming Languages other than VBA

Sub Example_RoundDistance()
   ' This example creates an aligned dimension in model space and
   ' uses RoundDistance to set the unit display
   ' of the dimension to rounded values

	Dim dimObj As AcadDimAligned
	Dim point1(0 To 2) As Double, point2(0 To 2) As Double
	Dim location(0 To 2) As Double

	' Define the dimension
	point1(0) = 5: point1(1) = 5: point1(2) = 0
	point2(0) = 10.123: point2(1) = 5: point2(2) = 0
	location(0) = 5: location(1) = 7: location(2) = 0

	' Create an aligned dimension object in model space
	Set dimObj = ThisDrawing.ModelSpace.AddDimAligned(point1, point2, location)

	ThisDrawing.Application.ZoomAll

	MsgBox "Press any key to round the dimension unit display to .5"

	' Round the distance of the dimension to 0.50 of a unit
	dimObj.RoundDistance = 0.5
	ThisDrawing.Regen acAllViewports

	MsgBox "Dimension units have been rounded to: " & dimObj.RoundDistance

End Sub