Modify layers in closed files via LISP

[DanielLench_]

Hi, I'm looking to craft a lisp that will apply a standard set of layer parameters to a file without fully opening it.

Below is a sample of parameters that are applied to an open drawing:

(setq laytemp "E-COMM")(command "layer" "make" laytemp "color" "TRUECOLOR" "124,0,164" laytemp "ltype" "CONDUIT" laytemp "lweight" "0.25" laytemp "plot" "p" laytemp "")
(setq laytemp "E-COMM-MSC")(command "layer" "make" laytemp "color" "TRUECOLOR" "124,0,164" laytemp "ltype" "Continuous" laytemp "lweight" "0.25" laytemp "plot" "p" laytemp "")
(setq laytemp "XE-COMM")(command "layer" "make" laytemp "color" "TRUECOLOR" "124,0,164" laytemp "ltype" "CONDUIT" laytemp "lweight" "0.25" laytemp "plot" "p" laytemp "")

I think that I want to combine a list like this into something with the vla commands. The below is something we have for freezing layers in closed drawings.

(defun c:clof ()       
(vl-load-com)
(setq dwgfile (getfiled "Select a drawing" "" "dwg" 0))
(setq lay (getstring "\nENTER A LAYER TO TURN OFF:"))
(setq cadver(substr (getvar "acadver") 1 2))                       ;; get cad version No.
(setq id (strcat "objectdbx.AxDbDocument." cadver))           ;; creat prog id
(setq dbx(vlax-create-object id))                                         ;; creat dbx object
(vla-open dbx dwgfile)
(setq layers (vla-get-layers dbx))                 ;; get layer collection set from dbx
           (if (not (vl-catch-all-error-p
               (setq vlay(vl-catch-all-apply 'vla-item (list layers lay)))))       ;; fild the specified layer in collection   
               (if (eq (vla-get-layeron vlay) :vlax-true)                          ;; check layer status         
                   (vla-put-layeron vlay :vlax-false)  
                )   
                (print "THE LAYER NOT FOUND  ! ")
             )
(vla-saveas dbx dwgfile)  
(vlax-release-object dbx)
(prin1)
)

Can someone help with this, please?

Much thanks!

[paullimapa · Accepted solution]

give this a shot:

; clolyrstd makes standard layers in selected dwg without opening
; response to OP
; https://forums.autodesk.com/t5/visual-lisp-autolisp-and-general/modify-layers-in-closed-files-via-lisp/m-p/11759838#M443852
(defun c:clolyrstd (/ aec_openp dwgfile cadver id dbx layers lay VlMakLyr)       
  (if(not(car (atoms-family 1 '("vl-load-com"))))(vl-load-com))
;;;--- aec_openp function
; checks to see if file is open already by another program
; returns T if file is opened or read-only 
; https://forums.augi.com/showthread.php?6102-Detect-Read-Only-file-attribute&highlight=open
; Usage:
; (aec_openp (strcat(getvar"dwgprefix")(getvar"dwgname")))
; Returns:
; T
; Usage:
; (aec_openp "C:\\Autodesk\\FormIt_English_Win_64bit_dlm\\Setup.exe")
; Returns:
; nil
(defun aec_openp (file-arg / file)
;  (setq file (open file-arg "a"))
;  (if file (close file))
;  file
 (cond 
  ((setq file (open file-arg "a"))
        (close file)
  )
 )
 (not file)
) ; defun
; VlMakLyr function using vl to create layer with given properties
; Arguments:
; lyrobj = layer object
; name = Layer name
; truecolor = True color values ie '(77 77 77) or '(124 0 164)
; linetype = linetype name
; lineweight = ie 25 = 0.25mm -1 = Bylayer -2 = Byblock -3 = Default
; plot = P = plottable N = Not plottable
; desc = layer description ie "" = blank
(defun VlMakLyr (lyrobj name truecolor linetype lineweight plot desc / acadfil acadlin flg lay lin myColor)
  (setq lay (vlax-invoke-method lyrobj 'Add name))
  (setq myColor (vla-GetInterfaceObject (vlax-get-acad-object) (strcat"AutoCAD.AcCmColor."(substr(getvar"acadver")1 2))))
  (vla-SetRGB myColor (car truecolor) (cadr truecolor) (caddr truecolor))
  (vla-put-Truecolor lay myColor)
  (if(not(tblsearch "LTYPE" linetype))
    (progn
      (if(zerop(getvar"measurement"))
       (setq acadlin (findfile"acad.lin"))
       (setq acadlin (findfile"acadiso.lin"))
      )
      (setq acadfil (open acadlin "r"))
      (while (setq lin (read-line acadfil))
        (if (and 
              (not flg)
              (eq (strcat "*" (strcase linetype)) (strcase(substr lin 1 (1+(strlen linetype)))))
            )
          (progn
            (setq flg T)
            (vla-load(vla-get-linetypes (vla-get-activedocument (vlax-get-acad-object))) linetype acadlin)
            (princ(strcat"\nLinetype [" linetype "] Successfully Loaded."))          
          ) ; progn
        ) ; if
      ) ; while
      (close acadfil)
    ) ; progn
  ) ; if
  (if(tblsearch "LTYPE" linetype) 
   (vlax-put-property lay 'LineType linetype)
   (princ(strcat"\nLinetype [" linetype "] Not Loaded... Default to Continuous"))
  )
  (vlax-put-property lay 'Lineweight lineweight)
  (if (= (strcase plot) "P")
   (vlax-put-property lay 'Plottable :vlax-true)
   (vlax-put-property lay 'Plottable :vlax-false)
  )
  (vlax-put-property lay 'Description desc)
  (princ(strcat"\nLayer Name: [" name "] Successfully Created with Given Properties."))(princ)
) ; defun VlMakLyr  
 (if(setq dwgfile (getfiled "Select a drawing" "" "dwg" 0))
   (if(not(aec_openp dwgfile))
     (progn
      (setq cadver(substr (getvar "acadver") 1 2))                       ;; get cad version No.
      (setq id (strcat "objectdbx.AxDbDocument." cadver))           ;; creat prog id
      (setq dbx(vlax-create-object id))                                         ;; creat dbx object
      (vla-open dbx dwgfile)
      (setq layers (vla-get-layers dbx))                 ;; get layer collection set from dbx
; code for layer collection of current dwg
;      (setq layers (vlax-get-property (vlax-get-property (vlax-get-acad-object) 'ActiveDocument) 'Layers))    
; make layers
       (VlMakLyr layers "E-COMM" '(124 0 164) "CONDUIT" 25 "P" "")
       (VlMakLyr layers "E-COMM-MSC" '(124 0 164) "Continuous" 25 "P" "")
       (VlMakLyr layers "XE-COMM" '(124 0 164) "CONDUIT" 25 "P" "") 
       (vla-saveas dbx dwgfile)  
       (vlax-release-object dbx)
       (princ(strcat"\nStandard Layers Successfully Created in Drawing: \n\t[" dwgfile "]"))
      ) ; progn
      (princ(strcat"\nSelected Drawing: [" dwgfile "]\n\t is Currently Opened and Cannot be Modified."))
   ) ; if
  (princ"\nNo Drawing Selected.")
 ) ; if
(prin1)
) ; defun 

[Sea-Haven]

Just a suggestion replace (VlMakLyr with a foreach layer with the parameters in a list handy if say way more than 3 layers.

Is there a check does layer exist what happens then ? Not tested.

[paullimapa]

good point...

maybe something like this:

  (setq lyrlst 
    (list 
      (list "E-COMM" '(124 0 164) "CONDUIT" 25 "P" "")  
      (list "E-COMM-MSC" '(124 0 164) "Continuous" 25 "P" "")
      (list "XE-COMM" '(124 0 164) "CONDUIT" 25 "P" "") 
    )
  )

and then this:

; make layers
       (foreach itm lyrlst
        (VlMakLyr layers (nth 0 itm) (nth 1 itm) (nth 2 itm) (nth 3 itm) (nth 4 itm) (nth 5 itm))
       )

[Sea-Haven]

Glad to see suggestion coded, you know what happens next some one else asks how do I set more layers. 

[paullimapa]

o yes bring it on lol