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#include <QtCore>

#include <windows.h>
#include <wtypes.h>
#include <initguid.h>

extern "C"
{
 #include "hidsdi.h"
 #include <setupapi.h>
 #include <dbt.h>
}

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    GUID hidguid;

    HidD_GetHidGuid(&hidguid);

    ....

    return a.exec();
}

...
LIBS += hid.dll
...

.../main.cpp:20: undefined reference to `_imp__HidD_GetHidGuid@4'