Using Programming Languages other than VBA

Sub Example_SnapRotationAngle()
	' This example changes the snap rotation angle for a
	' model space and paper space viewport.

	' Create a new model space viewport
	Dim viewportObj As AcadViewport
	Set viewportObj = ThisDrawing.Viewports.Add("NewViewport")

	' Find the current snap rotation angle
	Dim currSnapAngle As Double
	currSnapAngle = viewportObj.SnapRotationAngle
	MsgBox "The current model space snap rotation angle is " & viewportObj.SnapRotationAngle, , "SnapRotationAngle Example"

	' Change the snap rotation angle
	viewportObj.SnapRotationAngle = 1.5
	MsgBox "The new model space snap rotation angle is " & viewportObj.SnapRotationAngle, , "SnapRotationAngle Example"
   

	' Create a new paper space viewport
	Dim pviewportObj As AcadPViewport
	Dim center(0 To 2) As Double
	Dim width As Double
	Dim height As Double

	center(0) = 3: center(1) = 3: center(2) = 0
	width = 40
	height = 40
	ThisDrawing.ActiveSpace = acPaperSpace
	Set pviewportObj = ThisDrawing.PaperSpace.AddPViewport(center, width, height)

	' Find the current snap rotation angle
	currSnapAngle = pviewportObj.SnapRotationAngle
	MsgBox "The current paper space snap rotation angle is " & pviewportObj.SnapRotationAngle, , "SnapRotationAngle Example"

	' Change the snap rotation angle
	pviewportObj.SnapRotationAngle = 1.5
	MsgBox "The new paper space snap base point is " & pviewportObj.SnapRotationAngle, , "SnapRotationAngle Example"

End Sub