434939575 发表于 2014-12-22 09:56:15

初识UNDO与u的结合

(defun c:tt (/)
(command "UNDO" "g");开始11
(setq aa (getpoint "1"));
(setq bb(getpoint "2"));
(command "pline"aabb"");
(command "UNDO" "e");end55
(command "U" );此句恢复前面的动作11--55
      (command "circle" aa50"");

    );最后结果只画了圆

xufansw 发表于 2016-9-23 10:42:00

了解了，一直不明白这个咋用的，大神，谢谢了哈
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