Unresolved Symbol LNK error 2019

[stevef56]

I am getting unresolved linker errors after porting VC++6.0 code to VC.net. Any suggestions??

Stevef56

 

[xwb]

What symbols is this being reported on?

 

[stevef56]

Hear are a few,

I am trying to port USBHIDIO a host example from Jan Axelsons web page at lvr.com. I createded a directory for the project and added the two usb header files that were recommened (hid.lib, hid.h, and hidsdi.h.)

stevef56

usbhidioc error LNK2019: unresolved external symbol _HidD_GetAttributes@8 referenced in function "protected: bool __thiscall CUsbhidiocDlg::FindTheHID(void)" (?FindTheHID@CUsbhidiocDlg@@IAE_NXZ)
usbhidioc error LNK2019: unresolved external symbol _HidD_GetHidGuid@4 referenced in function "protected: bool __thiscall CUsbhidiocDlg::FindTheHID(void)" (?FindTheHID@CUsbhidiocDlg@@IAE_NXZ)
usbhidioc error LNK2019: unresolved external symbol _HidD_FreePreparsedData@4 referenced in function "protected: void __thiscall CUsbhidiocDlg::GetDeviceCapabilities(void)" (?GetDeviceCapabilities@CUsbhidiocDlg@@IAEXXZ)
usbhidioc error LNK2019: unresolved external symbol _HidP_GetCaps@8 referenced in function "protected: void __thiscall CUsbhidiocDlg::GetDeviceCapabilities(void)" (?GetDeviceCapabilities@CUsbhidiocDlg@@IAEXXZ)
usbhidioc error LNK2019: unresolved external symbol _HidD_GetPreparsedData@8 referenced in function "protected: void __thiscall CUsbhidiocDlg::GetDeviceCapabilities(void)" (?GetDeviceCapabilities@CUsbhidiocDlg@@IAEXXZ)

 

[DaveSinkula]

I createded a directory for the project and added the two usb header files that were recommened (hid.lib, hid.h, and hidsdi.h.)

Just the headers? That might explain the link errors; you need the library routines as well.

 

[xwb]

You probably need to add hid.lib to the link input.

 

[stevef56]

Just got back to this. Actually I do have the libraries in the work directory and added them to the linker dependencies. Still no luck though!

 

[xwb]

You probably need to declare them as C functions

extern "C" {
#include "hid.h"
}