SetUnknown       1596 modules/videoio/src/cap_msmf.cpp     CHECK_HR(hr = pNode->SetUnknown(MF_TOPONODE_SOURCE, pSource));
SetUnknown       1597 modules/videoio/src/cap_msmf.cpp     CHECK_HR(hr = pNode->SetUnknown(MF_TOPONODE_PRESENTATION_DESCRIPTOR, pPD));
SetUnknown       1598 modules/videoio/src/cap_msmf.cpp     CHECK_HR(hr = pNode->SetUnknown(MF_TOPONODE_STREAM_DESCRIPTOR, pSD));
SetUnknown        930 modules/videoio/src/cap_msmf.hpp         return _spAttributes->SetUnknown(guidKey, pUnknown);
SetUnknown       2501 modules/videoio/src/cap_msmf.hpp                     hr = SetUnknown(MF_MEDIASINK_SAMPLEGRABBERCALLBACK, spInsp.Get());
SetUnknown       2630 modules/videoio/src/cap_msmf.hpp                                                                            pAttr->SetUnknown(guidKey, value.Get());
SetUnknown       2774 modules/videoio/src/cap_msmf.hpp                 hr = SetUnknown(MF_MEDIASINK_PREFERREDTYPE, spMediaType.Detach());
SetUnknown       2846 modules/videoio/src/cap_msmf.hpp                 hr = pAttr->SetUnknown(MF_STREAMSINK_MEDIASINKINTERFACE, (IMFMediaSink*)this);