说明：  USBPort的编译说明 -- 01(VC知识库) 1. 安装DDK 2. 把DDK的inc路径填在头文件的包含路径中 3. 把DDK的lib路径填在库文件的包含路径中 4. 注释掉原代码中的HIDD_ATTRIBUTES结构 // 不知作者为什么要添加这个结构定义 5. 添加setupapi.lib 如果不想安装DDK，就去掉前两步，但需要拷贝相关的头文件和库文件到工程目录
(USBPort compile note- 01 (VC Knowledge Base) 1. Install DDK 2. To the inc path to fill in the DDK header file that contains the path 3. The DDK s lib path to fill in the library file that contains the path 4. HIDD_ATTRIBUTES comment out the original code structure// I do not know why the author of the definition of this structure to add 5. Add setupapi.lib If you do not want to install the DDK, to remove the first two steps, but requires copying the relevant header files and libraries to the project directory)