How can I view the graph running in my program?

In the help document, you can find two functions related to this problem: addtorot and removefromrot. The specific function transcript is as follows:

HRESULT AddToRot(IUnknown *pUnkGraph, DWORD *pdwRegister) {    IMoniker * pMoniker;    IRunningObjectTable *pROT;    if (FAILED(GetRunningObjectTable(0, &pROT))) {        return E_FAIL;    }    WCHAR wsz[256];    wsprintfW(wsz, L"FilterGraph %08x pid %08x", (DWORD_PTR)pUnkGraph, GetCurrentProcessId());    HRESULT hr = CreateItemMoniker(L"!", wsz, &pMoniker);    if (SUCCEEDED(hr)) {        hr = pROT->Register(ROTFLAGS_REGISTRATIONKEEPSALIVE, pUnkGraph,            pMoniker, pdwRegister);        pMoniker->Release();    }    pROT->Release();    return hr;}

void RemoveFromRot(DWORD pdwRegister){    IRunningObjectTable *pROT;    if (SUCCEEDED(GetRunningObjectTable(0, &pROT))) {        pROT->Revoke(pdwRegister);        pROT->Release();    }}
After creating your filter graph, run the addtorot function to view your
Graph, the graph state displayed in the tool is the same as that in your program, so that you can know whether your graph is correct.
Created. Is it convenient?