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按我理解，这就是所说的三层架构了。
File工程负责最底层的文件操作
FileProtocol工程负责具体的流程及协议，将相关数据返回给界面层
UI工程就是具体的界面层了，他只负责显示具体的数据，不负责软件的工作流程。
File, FileProtocol这两个工程都是DLL，注意看一下FileProtocol的工程依赖及附加包含目录。还要再看一下UI工程的工程依赖及附加包含目录。在这里，三个工程，项目解决方案是在同级目录下，通过一个解决方案去包含三个工程。这样做的好处在于，工程可以重用。比如说File工程，他负责最底层的文件操作，以后我们的其它软件项目还会用到它的，因此，以后的项目，在解决方案里直接添加File工程便可以用了。 -According to my understanding, this is referred to a three-tier architecture.
File project is responsible for the bottom of the file operations
FileProtocol charge of the project specific processes and agreement to the relevant data back to the interface layer
UI project is a specific interface layer, and he is only responsible for display of specific data, is not responsible for the software workflow.
File, FileProtocol these two projects are DLL, note that the works look FileProtocol dependence and additional include directories. Would also like to look at what the engineering rely on UI and additional include directories. Here, the three projects, t
