Using Programming Languages other than VBA

Sub Example_LayerOn()
	' This example creates a new layer called "LayerOn".
	' It then displays the status of the LayerOn property
	' for the new layer, toggles the status of the
	' LayerOn 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 LayerOn status.

	Dim layerObj As AcadLayer

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

	' Display the LayerOn status of the new layer
	GoSub DISPLAYSTATUS

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

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

DISPLAYSTATUS:
	If layerObj.LayerOn Then
		MsgBox "Layer " & layerObj.name & " is turned on.", , "LayerOn Example"
	Else
		MsgBox "Layer " & layerObj.name & " is turned off.", , "LayerOn Example"
	End If
	Return
	
End Sub