Using Programming Languages other than VBA

Sub Example_LayoutDisplayPaperShadow()
	' This example reads and modifies the preference value that controls
	' the display of the paper background shadow in layouts. When finished, this example
	' resets the preference value back to its original value.

	Dim ACADPref As AcadPreferencesDisplay
	Dim originalValue As Variant, newValue As Variant

	' Get the display preferences object
	Set ACADPref = ThisDrawing.Application.preferences.DISPLAY

	' Switch to paper space to view this change
	ThisDrawing.ActiveSpace = acPaperSpace

	' Read and display the original value
	originalValue = ACADPref.LayoutDisplayPaperShadow
	MsgBox "The LayoutDisplayPaperShadow preference is set to: " & originalValue

	' Modify the LayoutDisplayPaperShadow preference by toggling the value
	ACADPref.LayoutDisplayPaperShadow = Not (originalValue)
	newValue = ACADPref.LayoutDisplayPaperShadow
	ThisDrawing.Regen acAllViewports
	
	MsgBox "The LayoutDisplayPaperShadow preference has been set to: " & newValue

	' Reset the preference back to its original value
	'
	' * Note: Comment out this last section to leave the change to
	'		 this preference in effect
	ACADPref.LayoutDisplayPaperShadow = originalValue
	ThisDrawing.Regen acAllViewports

	MsgBox "The LayoutDisplayPaperShadow preference was reset back to: " & originalValue
End Sub