WindowsXP下虚拟串口驱动源码.使用VC的编译环境编译，目前还是在HelloWDM的基础上进行，完成了驱动的框架，虚拟的串口7。系统加载驱动好，必须在注册表中手动添加才行，具体位置是HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM，在这里加入新项目，名为MyWDMDevice，类型为REG_SZ，内容是COM7。向虚拟串口写入的数据会自动发回来。本程序适合初学者学习参考。-Virtual serial port driver source code under WindowsXP. Using VC compiler build environment, is still based on the HelloWDM to complete the framework of the driver, virtual serial port 7. System load the driver is good, must be added manually in the registry because as the specific location is HKEY_LOCAL_MACHINE \ HARDWARE \ DEVICEMAP \ SERIALCOMM, where adding a new project called MyWDMDevice, type REG_SZ, content is COM7. Data written to virtual serial port will be automatically sent back. It is suitable for beginners to learn information.