[This is preliminary documentation and subject to change.]
This method returns the LastMatched property through a pointer.
The LastMatched property contains a date representing the last time this filter selected an announcement. Used by the Filter Manager.
HRESULT get_LastMatched(
  DATE *lpdateReturn  // pointer to the LastMatched flag
);
 Returns an HRESULT indicating success or failure.
IBroadcastFilter::get_NumberMatched