文件内包括了OPC服务器/客户端开发例子程序，方便opc客服端的开发参考-This example source code requires the use of technologies　Microsoft (such as Visual Basic) and the OPC Foundation (such as the OPC DA Automation Wrapper) that may no longer be supported by their respective owners. Caution should be used when developing any solution based on this example. Users are encouraged to review the warranty and support policies for these third parties and their respective products before implementing any applications that depend on their technologies