new material

download all of the code, pictures from the internet  

http://download.csdn.net/detail/vsooda/4344051

 it is really a good thing.

while the codes in the book contain some mistakes..

from the codes, i found that the class was written in the header file.

that is a good behavior i  think.

learn and program like that...

although i am still a  rookie and i have little knowledge about that,  i am still learning and making improvement~O(∩_∩)O~