Keep layers from being deleted or purged

[toberino]

Good afternoon!

Is there a way to "lock" layers so that they cannot be deleted or purged from a drawing?

I have a template with all titleblocks, layers, dim styles, and such, all set up. But since there are a small group of layers that are not actually used in the drawing or template they are "purgable" or "deletable". As far as I understand locking the layer locks the geometry to keep it from being edited so it will not work for what I am thinking.
Does anyone know of a way to do this?

Thanks,

Nate

[ReMark]

I can't think of a way to lock the layers in any manner that would prevent them from being deleted/purged from a drawing unless one of the lisp gurus here can think of something.

[BlackBox]

The simple answer is to place 'something' on those layers to prevent them from being included in a standard purge.

The more (perhaps overly?) complex answer would be to code yourself an Object Reactor that recreates the layer(s) programmatically if a user does purge the layer(s).

[ReMark]

Devious...but very effective. Remind me not to get on your bad side Renderman.

[BlackBox]

Devious...but very effective. Remind me not to get on your bad side Renderman.

Necessity is the mother of invention, my friend, and not my very, very, very dark side.

Besides, methinks you'd enjoy the 'tech' you'd be equipped with, were we to work together. ... Here's a freebie.

[ReMark]

If we worked together there would be chaos and mayhem. And that's just the good stuff.

[Patrick Hughes]

But since there are a small group of layers that are not actually used in the drawing or template they are "purgable" or "deletable".

So, go ahead and purge or delete them. If you need them back at some point then insert the dwt and bam! there they are.

[nestly]

The simple answer is to place 'something' on those layers to prevent them from being included in a standard purge.

.... like putting a line or a point for each layer you want to "protect" in a block, then nesting that block in the title block.

[BlackBox]

.... like putting a line or a point for each layer you want to "protect" in a block, then nesting that block in the title block.

One of the guys I do software development with (part-time, 2nd job), has a trick where he uses .NET to add anonymous blocks which cannot be exlploded.

[Dadgad]

.... like putting a line or a point for each layer you want to "protect" in a block, then nesting that block in the title block.

I like that one nestly, not quite as nefarious as RendeMan's suggestion, the deviousness of which I find highly commendable. Or should I say inspired?
Mightn't creating a saved view with LAYERSNAPSHOT be another way to go?