请尝试查看该代码，

通过HidD_GetHidGuid获取HID GUID.

调用SetupDiGetClassDevs和

使用SetupDiEnumDeviceInfo和SetupDiGetDeviceRegistryProperty查看结果.

调用SetupDiEnumDeviceInterfaces，确保使用GUID参数

Please try to look onto that,

 Get the HID GUID with HidD_GetHidGuid.

 Call SetupDiGetClassDevs and

 See the results with SetupDiEnumDeviceInfo and SetupDiGetDeviceRegistryProperty.

 Call SetupDiEnumDeviceInterfaces, making sure to use the GUID parameter

亲爱的所有人，

我想我找到了USB通信的解决方案.我将尽快将C#中的软件源代码，PIC C中的固件代码以及使用PIC18f4550实现的硬件电路上载到该论坛.非常感谢！！！

Dear All,

I think i found the solution for USB communication.I will upload the software source codes in C#,firmware codes in PIC C and hardware circuits implemented using PIC18f4550 to this forum as soon as possible.Thank you very much!!!