C++ COM Sink

#include <Windows.h>
#include <OleAuto.h>
#include <OCIdl.h>
#include <stdio.h>

IID iid_events;

class EventSink : IDispatch {
    // Inherited via IDispatch
    virtual HRESULT STDMETHODCALLTYPE  QueryInterface(REFIID riid, void ** ppvObject) override
    {
        if (riid == IID_IUnknown || riid == IID_IDispatch || riid == iid_events) {
            *ppvObject = (void*)this;
            return S_OK;
        }

        return E_NOTIMPL;
    }
    virtual ULONG STDMETHODCALLTYPE  AddRef(void) override
    {
        return 0;
    }
    virtual ULONG STDMETHODCALLTYPE  Release(void) override
    {
        return 0;
    }
    virtual HRESULT STDMETHODCALLTYPE GetTypeInfoCount(UINT * pctinfo) override
    {
        return E_NOTIMPL;
    }
    virtual HRESULT STDMETHODCALLTYPE GetTypeInfo(UINT iTInfo, LCID lcid, ITypeInfo ** ppTInfo) override
    {
        return E_NOTIMPL;
    }
    virtual HRESULT STDMETHODCALLTYPE GetIDsOfNames(REFIID riid, LPOLESTR * rgszNames, UINT cNames, LCID lcid, DISPID * rgDispId) override
    {
        return E_NOTIMPL;

    }
    virtual HRESULT STDMETHODCALLTYPE Invoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS * pDispParams, VARIANT * pVarResult, EXCEPINFO * pExcepInfo, UINT * puArgErr) override
    {
        return E_NOTIMPL;
    }
};

int main()
{
    IRunningObjectTable *prot;
    IMoniker *pmon;
    IUnknown *punk;
    IConnectionPointContainer *pcpc;
    IConnectionPoint *pcp;
    DWORD cookie;
    HRESULT hr;

    EventSink sink;


    IIDFromString(L"{9009311a-c0b2-42a4-8e7c-f42091d71594}", &iid_events);

    CoInitialize(NULL);

    GetRunningObjectTable(0, &prot);

    CreateFileMoniker(L"comTestApp", &pmon);
    prot->GetObjectW(pmon, &punk);

    punk->QueryInterface(IID_IConnectionPointContainer, (void**)&pcpc);

    hr = pcpc->FindConnectionPoint(iid_events, &pcp);

    hr = pcp->Advise((IUnknown*)&sink, &cookie);
    printf("%x", hr);
}