Selecting objects in blocks

[the-trooper]

Hello Everyone

 

I use this lisp to calculate total length of selected lines. But now, with use of dynamic blocks, it has become useless.

 

Can it be edited so it is possible to select objects inside of a block? Like for trim or extend.

 

Thanks in advance!

 

;TLEN.LSP - Total LENgth of selected objects
;(c) 1998 Tee Square Graphics

(defun C:TLEN (/ ss tl n ent itm obj l)
 (setq ss (ssget)
       tl 0
       n (1- (sslength ss)))
 (while (>= n 0)
   (setq ent (entget (setq itm (ssname ss n)))
         obj (cdr (assoc 0 ent))
         l (cond
             ((= obj "LINE")
               (distance (cdr (assoc 10 ent))(cdr (assoc 11 ent))))
             ((= obj "ARC")
               (* (cdr (assoc 40 ent))
                  (if (minusp (setq l (- (cdr (assoc 51 ent))
                                         (cdr (assoc 50 ent)))))
                    (+ pi pi l) l)))
             ((or (= obj "CIRCLE")(= obj "SPLINE")(= obj "POLYLINE")
                  (= obj "LWPOLYLINE")(= obj "ELLIPSE"))
               (command "_.area" "_o" itm)
               (getvar "perimeter"))
             (T 0))
         tl (+ tl l)
         n (1- n)))
 (alert (strcat "Total length of selected objects is " (rtos tl)))
 (princ)
)