Using Programming Languages other than VBA

Sub Example_LayoutCrosshairColor()
	' This example reads and modifies the preference value that controls
	' the color of the crosshairs and text for paper space 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.LayoutCrosshairColor
	MsgBox "The LayoutCrosshairColor preference is: " & originalValue

	' Modify the LayoutCrosshairColor preference by making it red
	ACADPref.LayoutCrosshairColor = vbRed
	newValue = ACADPref.LayoutCrosshairColor
	ThisDrawing.Regen acAllViewports

	MsgBox "The LayoutCrosshairColor 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.LayoutCrosshairColor = originalValue
	ThisDrawing.Regen acAllViewports

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