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本KTV包括前端，后台，以及数据库。虽然是简洁版 但是可以参考其中的代码源，能够帮助我们少走弯路(This KTV includes front end, backstage, and database.)

内存映射文件的使用(The example of using memory map file)

说明：  在实现本实例之前先来简要了解一下加密的概念，加密是指通过 某种特殊的方法，更改已有信息的内容，使得未授权的用户即使得到 了加密信息，如果没有正确解密的方法，也无法得到信息的内容。谈 到加密的话题，一些读者一定非常感兴趣，而且会联想到复杂的加密 算法，本实例主要使用异或“^”运算符简单地实现了对数字加密的 功能(Take a brief look at the concept of encryption before implementing this example, encryption is defined by some special way, has changed the content of the information, the unauthorized users even get the encrypted information, if there is no correct decryption method can not get the information. When it comes to the topic of encryption, some readers will be very interested, and will associate the complex encryption algorithm. This example mainly uses XOR "^" operator to realize the function of digital encryption simply.)

说明：  将对话框资源封装到动态链接库中，实现界面的抽象封装(The dialog resource to the dynamic link library package, to achieve the abstract interface package)

自己编译的非常强大的西门子S7系列通信库，可以摆脱OPC的收费困扰(To compile a very powerful Siemens S7 series of communications library, you can get rid of troubled OPC charges)

用builder做的保存图片到数据库的小软件，供学习交流(Builder to do with the save the image to the of small software, for the exchange of learning )

matlab功能很强大，里面包含了很多程序，可以更好的理解和求解(matlab function is very powerful, which contains a lot of procedures, you can better understand and solve the)

袖珍文件分割器，VC++经典编程源码，很好的参考资料。(Pocket file splitter, VC++ classic programming source code, a good reference.)

Use RSA encryption IP, kao down after the operation can use after download, can be the truth.

用VC++6.0，通过OCX组件对力控组态软件的二次开发，实现油标准密度的计算(With VC++6.0, through OCX control configuration software component of the force the secondary development of the oil standard density calculation to achieve)