OnSetPresentationClock  433 modules/videoio/src/cap_msmf.cpp     STDMETHODIMP OnSetPresentationClock(IMFPresentationClock* pClock) { return ImageGrabberCallback::OnSetPresentationClock(pClock); }
OnSetPresentationClock 1708 modules/videoio/src/cap_msmf.cpp STDMETHODIMP ImageGrabberCallback::OnSetPresentationClock(IMFPresentationClock* pClock)