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4/8/2010

These constants contain the names of state variables evented by the AVTransport service.

Syntax 

const LPCWSTR 
  // TransportInfo
  TransportState		= L"TransportState",
  TransportStatus		 = L"TransportStatus",
  PlaySpeed			 = L"TransportPlaySpeed",
  // PositionInfo
  CurrentTrack			= L"CurrentTrack",
  CurrentTrackDuration	= L"CurrentTrackDuration",
  CurrentTrackMetaData	= L"CurrentTrackMetaData",
  CurrentTrackURI		 = L"CurrentTrackURI",
  RelTime				 = L"RelativeTimePosition",
  AbsTime				 = L"AbsoluteTimePosition",
  RelCounter			= L"RelativeCounterPosition",
  AbsCounter			= L"AbsoluteCounterPosition",
  // DeviceCapabilities
  PossiblePlayMedia	 = L"PossiblePlaybackStorageMedia",
  PossibleRecMedia		= L"PossibleRecordStorageMedia",
  PossibleRecQualityModes = L"PossibleRecordQualityModes",
  // TransportSettings
  PlayMode				= L"CurrentPlayMode",
  RecQualityMode		= L"CurrentRecordQualityMode",
  // CurrentTransportActions
  CurrentTransportActions = L"CurrentTransportActions",
  // MediaInfo
  NrTracks				= L"NumberOfTracks",
  MediaDuration		 = L"CurrentMediaDuration",
  CurrentURI			= L"AVTransportURI",
  CurrentURIMetaData	= L"AVTransportURIMetaData",
  NextURI				 = L"NextAVTransportURI",
  NextURIMetaData		 = L"NextAVTransportURIMetaData",
  PlaybackMedia		 = L"PlaybackStorageMedium",
  RecordMedia			 = L"RecordStorageMedium",
  WriteStatus			 = L"RecordMediumWriteStatus";

Remarks

Using IEventSink::OnStateChanged, applications that use or implement the AVTransport service use these constants to receive and send event notifications when evented state variables change.

Requirements

Header av_upnp.h
Library Av_upnp.lib
Windows Embedded CE Windows CE 5.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also