How can I distinguish a block that can't be explode in my LISP application?

[markshagal]

How can I distinguish a block that can't be explode in my LISP application? DXF group 280 not present in GETENTITY list.

[_Tharwat]

Exmplae ..

(setq ss (car (entsel "\n Select a block :")))

With this you would know if the block is not explodable or not ..

(not (vlax-method-applicable-p
       (vlax-ename->vla-object ss)
       'Explode
     )
)

With this also as well ....

(eq (vla-get-explodable
      (vla-item (vla-get-blocks
                  (vla-get-activedocument (vlax-get-acad-object))
                )
                (cdr (assoc 2 (entget ss)))
      )
    )
    :vlax-false
)