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 fr a mework 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.