SSGet Dynamic Blocks.

[mdhutchinson]

I am working to snag a selection set of a specific dynamic block... for some reason some of them are anonymous blocks... this is as I would have expected.

For others, they are not anonymous blocks... and simply this code works

(setq ss (ssget "X" (list (cons 0 "INSERT")(cons 2 "ROOM TAG"))))

So... for the anonymous blocks I have to check the effective name:

(defun GetRoomTags (/ inc blockname en finalss ss)

(setq ss (ssget "X" (list (cons 0 "INSERT")(cons 2 "`*U*"))))
 (setq inc 0)
 (setq finalss (ssadd))
 (while (setq en (ssname ss inc))
  (setq blockname (vla-get-effectivename (vlax-ename->vla-object en)))
  (if (wcmatch (strcase blockname) "ROOM TAG")
   (ssadd en finalss)
  ) 
  (setq inc (1+ inc))
 )
 finalss
) 

Why would there be 'Room Tag' (s) inserted both as anonymous as well as named blocks. I know that they have a 'effective name' property... but not certain why the same dynamic block would be inserted in the drawing file in two ways.

If looks as though I may have to get the anonymous blocks as well as the named blocks and push them into the same selection set.

[pbejse]

---

@mdhutchinson wrote:

I am working to snag a selection set of a specific dynamic block... for some reason some of them are anonymous blocks... this is as I would have expected.

For others, they are not anonymous blocks... and simply this code works

(setq ss (ssget "X" (list (cons 0 "INSERT")(cons 2 "ROOM TAG"))))

So... for the anonymous blocks I have to check the effective name:

(defun GetRoomTags (/ inc blockname en finalss ss)

(setq ss (ssget "X" (list (cons 0 "INSERT")(cons 2 "`*U*"))))
 (setq inc 0)
 (setq finalss (ssadd))
 (while (setq en (ssname ss inc))
  (setq blockname (vla-get-effectivename (vlax-ename->vla-object en)))
  (if (wcmatch (strcase blockname) "ROOM TAG")
   (ssadd en finalss)
  ) 
  (setq inc (1+ inc))
 )
 finalss
) 

Why would there be 'Room Tag' (s) inserted both as anonymous as well as named blocks. I know that they have a 'effective name' property... but not certain why the same dynamic block would be inserted in the drawing file in two ways.

If looks as though I may have to get the anonymous blocks as well as the named blocks and push them into the same selection set.

---

Dynamic block behaves that way when altered from the orignal state. 

[mdhutchinson · Accepted solution]

That's the reason...

... they turn to anonymous blocks... "when they are altered from the original state"

Thanks!