Using Programming Languages other than VBA

Sub Example_Lock()
	' This example creates a new layer called "Lock".
	' It then displays the status of the Lock property
	' for the new layer, toggles the status of the
	' Lock property, and again displays its status.
	' After running this example, you can check the layer
	' control on the Object Properties tool bar. It will
	' show the new layer and the latest Lock status.

	Dim layerObj As AcadLayer

	' Create the new layer
	Set layerObj = ThisDrawing.Layers.Add("Lock")

	' Display the Lock status of the new layer
	GoSub DISPLAYSTATUS

	' Toggle the status of the Lock property for the layer
	layerObj.Lock = Not (layerObj.Lock)

	' Display the Lock status of the new layer
	GoSub DISPLAYSTATUS
	Exit Sub

DISPLAYSTATUS:
	If layerObj.Lock Then
		MsgBox "Layer " & layerObj.name & " is locked.", , "Lock Example"
	Else
		MsgBox "Layer " & layerObj.name & " is unlocked.", , "Lock Example"
	End If
	Return
	
End Sub