Unhide layera lsp

[Isanders2]

Hey in trying to find a code that does what is explained on this website https://cadtips.cadalyst.com/layer-properties/unhide-layers for some reason I am unable to download it was wondering if anyone used sonething like this

[Patchy · Accepted solution]

This one?

[pendean · Accepted solution]

here you go (untested, I had it in a backup)

;;;========================================================================
;;;                    *** LYR-UNHIDE.LSP ***
;;;========================================================================
;;;
;;; This function dynamicaly "TURN ON" frozen layers by selecting objects
;;; lying on these layers. The procedure is achieved by temporary turning
;;; on all layers to enable selection.
;;;
;;;
;;; "Specially recommanded to use on Xrefs" - Raymond Rizkallah, Aug. 2007
;;;========================================================================

(defun C:LUH (/ entsll laynam laypmt  )

  (setq orgm (getvar "regenmode"))
  (setq laylst nil laypmt " ")
  (command "undo" "m" "undo" "g")

    (setvar "regenmode" 1)
  (command "layer" "t" "*" "on" "*" "")
  (while
    (setq entsll (nentsel "\n Select object on layer to be unhidden: "))
    (setq laynam (cdr (assoc 8 (entget (car entsll)))))
    (if (null laylst) (setq laylst (strcat laynam ",")) (setq laylst (strcat laylst laynam ",")))
    ;(prompt (strcat "\n   <" (substr laylst 1 (1- (strlen laylst))) ">"))

    (setq laypmt (strcat laypmt "<" laynam "> ; "))    (prompt (strcat "\n" laypmt))

  ) ;end while

  ; (command "undo" "end" "undo" "1")   
  (if laylst (command "layer" "t" laylst "on" laylst "u" laylst ""))  ;end if
 
  (setvar "regenmode" orgm)
  (princ)

) ;end function

;;;========================================================================

(prompt "\n Use [C:LUH] to dynamicaly reveal hidden layers. ")
(princ)

[Isanders2]

Thanks will take a look at it

[Isanders2]

Thank you

[Kent1Cooper]

My approach to this was in LayerThawOnSelect.lsp and its LTOS command, >here<.

Two meaningful differences [there could be other lesser ones]:

1.  It's top-level, not for nested objects' Layers [it could probably be made to do them, but I think you could likely be thawing/turning-on Layer 0 multiple times].

2.  It thaws/turns on everything, and it highlights everything on Layers that were initially frozen or off, so you can see which they were and won't unnecessarily select things on Layers that were already visible before you started.  And once you pick something, it un-highlights everything else on that Layer, so you won't be selecting something else on a Layer you've already picked.