Using Programming Languages other than VBA

Sub Example_ZoomPrevious()
	' This example creates several objects in model space and
	' then performs a variety of zooms on the drawing.

	' Create a Ray object in model space
	Dim rayObj As AcadRay
	Dim basePoint(0 To 2) As Double
	Dim SecondPoint(0 To 2) As Double
	basePoint(0) = 3#: basePoint(1) = 3#: basePoint(2) = 0#
	SecondPoint(0) = 1#: SecondPoint(1) = 3#: SecondPoint(2) = 0#
	Set rayObj = ThisDrawing.ModelSpace.AddRay(basePoint, SecondPoint)

	' Create a polyline object in model space
	Dim plineObj As AcadLWPolyline
	Dim points(0 To 5) As Double
	points(0) = 3: points(1) = 7
	points(2) = 9: points(3) = 2
	points(4) = 3: points(5) = 5
	Set plineObj = ThisDrawing.ModelSpace.AddLightWeightPolyline(points)
	plineObj.Closed = True

	' Create a line object in model space
	Dim lineObj As AcadLine
	Dim startPoint(0 To 2) As Double
	Dim endPoint(0 To 2) As Double
	startPoint(0) = 0: startPoint(1) = 0: startPoint(2) = 0
	endPoint(0) = 2: endPoint(1) = 2: endPoint(2) = 0
	Set lineObj = ThisDrawing.ModelSpace.AddLine(startPoint, endPoint)

	' Create a circle object in model space
	Dim circObj As AcadCircle
	Dim centerPt(0 To 2) As Double
	Dim radius As Double
	centerPt(0) = 20: centerPt(1) = 30: centerPt(2) = 0
	radius = 3
	Set circObj = ThisDrawing.ModelSpace.AddCircle(centerPt, radius)

	' Create an ellipse object in model space
	Dim ellObj As AcadEllipse
	Dim majAxis(0 To 2) As Double
	Dim center(0 To 2) As Double
	Dim radRatio As Double
	center(0) = 5#: center(1) = 5#: center(2) = 0#
	majAxis(0) = 10: majAxis(1) = 20#: majAxis(2) = 0#
	radRatio = 0.3
	Set ellObj = ThisDrawing.ModelSpace.AddEllipse(center, majAxis, radRatio)

' ZoomAll
	MsgBox "Perform a ZoomAll"
	ZoomAll
	

' ZoomExtents
	MsgBox "Perform a ZoomExtents"
	ZoomExtents

' ZoomPickWindow
	MsgBox "Perform a ZoomPickWindow"
	ZoomPickWindow

' ZoomPrevious
	MsgBox "Perform a ZoomPrevious"
	ZoomPrevious
End Sub