Using Programming Languages other than VBA

Sub Example_AutoTrackingVecColor()
	' This example reads and modifies the preference value that controls
	' the color of the AutoTrack vector. 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

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

	' Modify the AutoTrackingVecColor preference by making it red
	ACADPref.AutoTrackingVecColor = vbRed
	newValue = ACADPref.AutoTrackingVecColor
	MsgBox "The AutoTrackingVecColor 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.AutoTrackingVecColor = originalValue
	MsgBox "The AutoTrackingVecColor preference was reset back to: " & originalValue
End Sub