Member Avatar for anderson

I am trying to write an application that will detect all the USB devices connected to my computer. For this I have declared GUID and called the following functions to get the information about devices connected.


LPGUID guid;
HidD_GetHidGuid(guid);

HDEVINFO hDevInfo;

hDevInfo = SetupDiGetClassDevs(guid,NULL,NULL,DIGCF_PRESENT |

DIGCF_INTERFACEDEVICE);


But it give the following error ….

error LNK2019: unresolved external symbol _imp__SetupDiGetClassDevsA@16 referenced in function "public: void __thiscall

error LNK2019: unresolved external symbol "void __stdcall HidD_GetHidGuid(struct _GUID *)"

fatal error : LNK1120: 2 unresolved externals

I don’t understand that where am I making mistake? I have include the following header files :

Hidclass.h
Setupapi.h
Hidsdi.h


Can you please tell me what mistake am I making?

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  • Latest Post Latest Post by shazzzz...
Member Avatar for Ancient Dragon

you are missing the libraries that contain those functions. Get the libs from wherever you got those header files.

Member Avatar for anderson

Finally I got it I have included hdi.lib,setupapi.lib
I got these files from windows ddk
now it's compiling without any error.

thank you

Member Avatar for shazzzz...

include setupapi.lib in your linker if you have included the headers from ddk

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