I find a tutorial on the Internet is a tragedy, also may be I will not set, it put previous version good all files will be deleted and then left to modify some files, I thought this cover upgrade overturned my imagination, I time, tutorial is as follows: http://www.cnblogs.com/xpvincent/p/5451778.html

How can you make a lot of games like that kind of patch updates,
One can automatically find the target folder (this may be on the initial installation of the registry configuration, my installation package to skip this step)
Part 2 is only replace files, rather than the original first delete all files,

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