Using Programming Languages other than VBA

Sub Example_CenterType()
	' This example creates a diametric dimension in model space.
	' It then changes the type of center for the dimension.

	Dim dimObj As AcadDimDiametric
	Dim chordPoint(0 To 2) As Double
	Dim farChordPoint(0 To 2) As Double
	Dim leaderLength As Double

	' Define the dimension
	chordPoint(0) = 5#: chordPoint(1) = 3#: chordPoint(2) = 0#
	farChordPoint(0) = 5#: farChordPoint(1) = 5#: farChordPoint(2) = 0#
	leaderLength = 1#

	' Create the diametric dimension in model space
	Set dimObj = ThisDrawing.ModelSpace.AddDimDiametric(chordPoint, farChordPoint, leaderLength)
	ZoomAll

	' Set the center to be none
	dimObj.CenterType = acCenterNone
	dimObj.Update
	MsgBox "The dimension center type is set to none."

	' Change the center type to center mark
	dimObj.CenterType = acCenterMark
	dimObj.Update
	MsgBox "The dimension center type is set to center mark."

	' Change the center type to center line
	dimObj.CenterType = acCenterLine
	dimObj.Update
	MsgBox "The dimension center type is set to center line."
End Sub