MF_PROP_SAMPLEGRABBERCALLBACK 1347 modules/videoio/src/cap_msmf.cpp     WRL_METHOD(spSetting, Insert, bReplaced, hr, DEREF_WRL_OBJ(_StringReference(MF_PROP_SAMPLEGRABBERCALLBACK)), reinterpret_cast<_Object>(this))
MF_PROP_SAMPLEGRABBERCALLBACK 2496 modules/videoio/src/cap_msmf.hpp                 hr = spSetting->Lookup(Microsoft::WRL::Wrappers::HStringReference(MF_PROP_SAMPLEGRABBERCALLBACK).Get(), spInsp.ReleaseAndGetAddressOf());