;一个VLISP的批量处理范例
;;从这个范例可以了解VLISP批量处理图档
;;虽然速度慢了点,但非常实用
;;By LUCAS(龙龙仔)
;;从文件移除未使用之具名参考                                 
;;                                                           
;;虽配合Expresstools__(acetutil.arx)                         
;;为加度程序执行,程序将设定系统变量ACADLSPASDOC              
;;即<只载入 acad.lsp 至 AutoCAD 执行期所开启的第一个图面>    
;;当然程序结束后,会还原系统变量ACADLSPASDOC 
;;                 
;;Usage: (PURGEALL <循环次数>)                                                            
;;Usage: (PURGEALL 5)                                       

(arxload "acetutil.arx" NIL)
(vl-load-com)
(defun PURGEALL (TIMES / HOLDECHO APP DWGNAME PREFIX_DWG NN QQ HOLDLSP
   WW)
  (setq HOLDECHO (getvar "cmdecho"))
  (setvar "cmdecho" 0)
  (setq PREFIX_DWG
  (strcat
    (strcase (acet-ui-pickdir
        "选择目录"
        (vl-string-right-trim "\\" (getvar "dwgprefix"))
        "移除未使用之具名参考"
      )
    )
    "\\"
  )
  )
  (setq HOLDLSP (getvar "ACADLSPASDOC"))
  (setvar "acadlspasdoc" 0)
  (setq QQ (vl-directory-files PREFIX_DWG "*.DWG"))
  (setq NN 0)
  (if (/= QQ NIL)
    (progn
      (setq APP (vlax-get-acad-object))
      (repeat (length QQ)
 (setq DWGNAME (strcase (strcat PREFIX_DWG (nth NN QQ))))
 (setq WW (vla-open (vla-get-documents APP) DWGNAME))
 (repeat TIMES (vla-purgeall WW))
 (vla-save WW)
 (prompt (strcat "\n" DWGNAME " !!!"))
 (vla-close WW :vlax-false)
 (setq NN (1+ NN))
      )
      (vlax-release-object WW)
      (vlax-release-object APP)
    )
    (prompt "\n所选目录中未有任何图档!!!")
  )
  (setvar "acadlspasdoc" HOLDLSP)
  (setvar "cmdecho" HOLDECHO)
  (princ)
)
(princ)