About Combox,help!!!

[zxfsnow <zxfsnow sina com>]

hi:
How can I get index of text in entry when combox changed

example:

 one combox item has three string:first is "aaa",second is "bbb",third is "ccc",I can get text("bbb") in entry  when combox changed,but I can't get index (number 2),any idea?thank
you!
    
______________________________________

===================================================================
新浪免费电子邮箱 (http://mail.sina.com.cn)
想让100万陌生人同时爱上你么?来找我吧! (http://cheese.sina.com.cn)
找朋友？找工作？找生活实用信息？到新浪分类信息 (http://classad.sina.com.cn/)