Using Programming Languages other than VBA

Sub Example_Contrast()
	' This example inserts a raster image and finds the current
	' Contrast of the image. It then changes the Contrast
	' of the image.

	' This example uses the "downtown.jpg" found in the Sample
	' directory. If you do not have the image, or if it is located
	' in a different directory, insert a valid path and name for the
	' imageName variable below.
	Dim insertionPoint(0 To 2) As Double
	Dim scalefactor As Double
	Dim rotAngleInDegree As Double
	Dim rotAngle As Double
	Dim imageName As String
	Dim raster As AcadRasterImage
	imageName = "C:\AutoCAD\sample\downtown.jpg"
	insertionPoint(0) = 2#: insertionPoint(1) = 2#: insertionPoint(2) = 0#
	scalefactor = 1#
	rotAngleInDegree = 0#
	rotAngle = rotAngleInDegree * 3.141592 / 180#

	On Error Resume Next

	' Creates a raster image in model space
	Set raster = ThisDrawing.ModelSpace.AddRaster(imageName, insertionPoint, scalefactor, rotAngle)
	If Err.Description = "File error" Then
		MsgBox imageName & " could not be found."
		Exit Sub
	End If

	' Find the current Contrast
	ThisDrawing.Regen True
	MsgBox "The Contrast is currently set to: " & raster.Contrast, vbInformation

	' Change the Contrast to 5
	raster.Contrast = 5
	ThisDrawing.Regen True
	MsgBox "The Contrast is now set to: " & raster.Contrast, vbInformation
End Sub

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