Thanks.
    but my english is so poor,I read hardly when I enter some english web,and I can't find the book's code in wrox, I have the URL just from wrox forums. One thing is sure that the book was from wrox and on its top there is a line:if you want the code of the book ,you can visit the www.wrox.com ,if you have any question you can visit p2p.wrox.com,so I visit here.
    I wish someone could help me~.
(my english is too poor to express my view,you can see~~~)