Using Programming Languages other than VBA

Sub Example_GetExtensionDictionary()
	' This example creates a Circle object in model space and
	' adds a new Extension Dictionary to the Circle object

	Dim EDictionary As AcadDictionary
	Dim circleObj As AcadCircle
	Dim centerPoint(0 To 2) As Double
	Dim radius As Double

	' Define the Circle object
	centerPoint(0) = 0: centerPoint(1) = 0: centerPoint(2) = 0
	radius = 5#

	' Create the Circle object in model space
	Set circleObj = ThisDrawing.ModelSpace.AddCircle(centerPoint, radius)

	ThisDrawing.Application.ZoomAll

	MsgBox "Circle object Extension Dictionary state before: " & circleObj.HasExtensionDictionary

	' Create an Extension Dictionary for the new Circle
	Set EDictionary = circleObj.GetExtensionDictionary

	MsgBox "Circle object Extension Dictionary state after: " & circleObj.HasExtensionDictionary
End Sub