ActiveX and VBA Developer's Guide > Create and Edit AutoCAD Entities > Use Layers, Colors, and Linetypes >  Work with Layers > 
Turn Layers On and Off
 
 
 

Turned-off layers are regenerated with the drawing but are not displayed or plotted. By turning layers off, you avoid regenerating the drawing every time you thaw a layer. When you turn a layer on that has been turned off, AutoCAD redraws the objects on that layer.

To turn layers on and off, use the LayerOn property. If you input a value of TRUE to this property, the layer is turned on. If you input a value of FALSE, the layer is turned off.

Turn off a layer

This example creates a new layer, adds a circle to the layer, then turns off the layer so that the circle is no longer visible.

Sub Ch4_LayerInvisible()

	' Create a circle

	Dim circleObj As AcadCircle

	Dim center(0 To 2) As Double

	Dim radius As Double

	center(0) = 2: center(1) = 2: center(2) = 0

	radius = 1

	Set circleObj = ThisDrawing.ModelSpace. _

						AddCircle(center, radius)




	' Create a new layer called "ABC"




	Dim layerObj As AcadLayer




	Set layerObj = ThisDrawing.Layers.Add("ABC")







	' Assign the circle to the "ABC" layer




	circleObj.Layer = "ABC"




	circleObj.Update







	' Turn off layer "ABC"




	layerObj.LayerOn = False




	ThisDrawing.Regen acActiveViewport




End Sub