[求助]：命令行不停的显示“未知命令“STR”。按 F1 查看帮助”

szx025

(defun C:str (/ pt1 pt2 l n p0 p1)
;;保存系统变量设置
(setq old_osmode (getvar "osmode"))
(setq old_CMDECHO (getvar "CMDECHO"))
(setvar "osmode" 32)
(setvar "CMDECHO" 0)
(command "-layer" "m" "栏杆" "C" "1" "" "")
(if (setq pt1 (getpoint "\n左下角点:"))
(while (setq pt2 (getpoint pt1 "\n右下角点:"))
(setvar "osmode" 0)
(setq L (distance pt1 pt2))
(command "line" pt1 pt2 "")
(command "donut" "0" "80" pt1 "")
(command "donut" "0" "80" pt2 "")
(setvar "osmode" 32)
(setq N (/ L 1200))
(setq I 1)
(setq k (angle pt1 pt2))
(setq P0 Pt1)
(while (<= i N)
(setq P1 (polar p0 k 1200))
(progn
(command "donut" "0" "80" p1 "")
(setq P0 (polar p0 k 1200))
(setq I (+ i 1))
(setq *error* olderr)
(command "")
(setq pt1 pt2)
)
)
)
)

;;恢复系统变量设置
(setvar "osmode" old_osmode)
(setvar "CMDECHO" old_CMDECHO)
(setvar "clayer" "0")
(princ)
)
这个程序能运行，但执行时命令行不停的显示“未知命令“STR”。按 F1 查看帮助”很影响程序的执行速度。如何解决，请高人出手

Underway

Try .....

2. 
   
3. (while (<= i N)
   
4.   (setq P1 (polar p0 k 1200))
   
5.   (progn
   
6.     (command "donut" "0" "80" p1 "")
   
7.     (setq P0 (polar p0 k 1200))
   
8.     (setq I (1+ i))
   
9.     ;;(setq *error* olderr)
   
10.     ;;(command "")
    
11.     (setq pt1 pt2)
    
12.   )
    
13. )
    

<br /> (while (<= i N)<br />   (setq P1 (polar p0 k 1200))<br />   (progn<br />     (command "donut" "0" "80" p1 "")<br />     (setq P0 (polar p0 k 1200))<br />     (setq I (1+ i))<br />     ;;(setq *error* olderr)<br />     ;;(command "")<br />     (setq pt1 pt2)<br />   )<br /> )<br />

szx025

谢谢，问题解决