整dbx、VB、c#或c++都是多此一举
 - (defun c:tt (/ lst)
- "全图选择集实体图层列表"
- (if (setq ss (ssget "x"))
- (progn
- (setq i -1)
- (while (setq e (ssname ss (setq i (1+ i))))
- (setq la (cdr (assoc 8 (entget e)))
- lst (if (not (member la lst))
- (cons la lst)
- lst
- )
- )
- )
- )
- )
- (print lst)
- (princ)
- )
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