[求助]：选择函数tblsearch如何应用

zw_zwzx

为何这样写函数不正确呢？
我想检验当前线型中是否含有"hidden"，使用这个函数搜索，格式如下：
(setq en (tblsearch "linetype" "hidden"))
结果提示我错误，这是为什么呢？

yunzhong80

Searches a symbol table for a symbol name

(tblsearch table-name symbol [setnext])

Arguments

table-name

A string that identifies the symbol table to be searched. This argument is not case sensitive.

symbol

A string identifying the symbol name to be searched for. This argument is not case sensitive.

setnext

If this argument is supplied and is not nil, the tblnext entry counter is adjusted so the following tblnext call returns the entry after the one returned by this tblsearch call. Otherwise, tblsearch has no effect on the order of entries retrieved by tblnext.

Return Values

If tblsearch finds an entry for the given symbol name, it returns that entry in the format described for tblnext. If no entry is found, tblsearch returns nil.

Examples

The following command searches for a text style named "standard":

Command: (tblsearch "style" "standard")

((0 . "STYLE") (2 . "STANDARD") (70 . 0) (40 . 0.0) (41 . 1.0) (50 . 0.0) (71 . 0) (42 . 0.3) (3 . "txt") (4 . ""))

   Comments?

zw_zwzx

楼上的兄弟，谢谢你给的答复，但很遗憾我看不懂，如果可以的话请用中文帮忙解决一下呗！！！俺的英语不好！
到底应该如何查询当前图形中是否含有要指定的线型呢，
（tblsear "style" "standard"）我知道是什么意思，但为何不能用在“linetype”中呢，如果真的不能这么用，那应该用什么命令去实现呢？

Underway

再试
(tblsearch "style" "standard")

xyp1964

2. [FONT=courier new](setq en (tblsearch "ltype" "hidden"))[/FONT]

[FONT=courier new](setq en (tblsearch "ltype" "hidden"))[/FONT]

可选："LAYER", "LTYPE", "VIEW", "STYLE", "BLOCK", "UCS", "APPID", "DIMSTYLE", and "VPORT"

yxpxa

楼主把系统变量用错了，楼上xyp1964兄正解。如果不存在en应该为nil

zw_zwzx

谢谢各位的帮忙了，我已经搞清楚了，用ltype就对了，以后还请各位多帮忙。