unresolved external symbol _DEVPKEY_Device_BusReportedDeviceDesc

问题

For devices attached to my machine I want to retrieve device-property Bus Reported Device Description. For this purpose I use function SetupDiGetDeviceProperty of Setup API. In devpkey.h I found the defintion DEVPKEY_Device_BusReportedDeviceDesc.

But if I use DEVPKEY_Device_BusReportedDeviceDesc I receive unresolved external symbol _DEVPKEY_Device_BusReportedDeviceDesc while linking.

Here is my code (only included minimal code to reproduce issue):

#include "stdafx.h"

#include <Windows.h>
#include <devpropdef.h>
#include <devpkey.h>

int main()
{
    DEVPROPKEY x = DEVPKEY_Device_BusReportedDeviceDesc;

    return 0;
}

Here is the full error code:

error LNK2001: unresolved external symbol _DEVPKEY_Device_BusReportedDeviceDesc

How can I fix this issue ?

回答1:

To fix this issue you need to include initguid.h. This include must before devpropdef.h and devpkey.h.

#include "stdafx.h"
#include <initguid.h>   // include before devpropdef.h
#include <Windows.h>
#include <devpropdef.h>
#include <devpkey.h>

int main()
{
    DEVPROPKEY x = DEVPKEY_Device_BusReportedDeviceDesc;

    return 0;
}

来源：https://stackoverflow.com/questions/47714380/unresolved-external-symbol-devpkey-device-busreporteddevicedesc