Just wanted to add another Possibility to the Original Thread

thread687-1149218

The Original Thread was looking for a Way to Freeze Layers using Wildcards...

I wanted to offer this Alternative.

VBA Code is below the line
--------------------------------------

Public Sub Turn_off_Layers()
' Name The Sub anything that you choose

Dim objlayer As AcadLayer
Dim CurrLayer As AcadLayer

' set the first layer in the collection of layers
'(typically the 0 layer ) to Current
' Turn it on and thaw it if necessary

If ThisDrawing.Layers.Item(0).Freeze = True Then
ThisDrawing.Layers.Item(0).Freeze = False
End If

If ThisDrawing.Layers.Item(0).LayerOn = False Then
ThisDrawing.Layers.Item(0).LayerOn = True
End If

Set CurrLayer = ThisDrawing.Layers.Item(0)
ThisDrawing.ActiveLayer = CurrLayer

' End of Code Section to Freeze / Thaw / Set Current (0) Layer

' iterate through all Layer in the collection
For Each objlayer In ThisDrawing.Layers

' Test with wildcard to see if the current layer name
' in the for loop is similar to the string to test with

If objlayer.Name Like "*E-SYST-IDEN*" = True Then
objlayer.LayerOn = True
objlayer.Freeze = True
End If

' Add an If then block similar to the one above for each
' string you want to test for

' increment the for loop that iterates through the
' layers collection
Next objlayer

' regen the viewports so that the current state is reflected
ThisDrawing.Regen acAllViewports

' end the subroutine
End Sub


------------------------------------

This was tested in Autocad Architecture 2009
Using Microsoft VB 6.5

It works to turn off all layers that match the wild card string
resident file layers and xref'd layers