IiTunes Interface Reference

List of all members.

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Detailed Description

Defines the top-level iTunes application object.

This interface defines the top-level iTunes application object. All other iTunes interfaces are accessed through this object.

This is the only externally creatable iTunes COM interface. All other iTunes interfaces are accessed through this interface. It can be created using the iTunesApp class.

To create an IiTunes object from C++:

    #include "iTunesCOMInterface.h"
    
    HRESULT  hRes;
    IiTunes* iITunes;
    
    // note - CLSID_iTunesApp and IID_IiTunes are defined in iTunesCOMInterface_i.c
    hRes = ::CoCreateInstance(CLSID_iTunesApp, NULL, CLSCTX_LOCAL_SERVER, IID_IiTunes, (PVOID *)&iITunes);

To create an IiTunes object from C#:

    iTunesLib.IiTunes iTunesApp;
    iTunesApp = new iTunesLib.iTunesAppClass();

To create an IiTunes object from Visual Basic:

    Imports iTunesLib
    Dim iTunesApp as new iTunesApp

To create an IiTunes object from VBScript:

    Dim iTunesApp;
    Set iTunesApp = WScript.CreateObject("iTunes.Application");

To create an IiTunes object from JScript:

    var iTunesApp = WScript.CreateObject("iTunes.Application");

To create an IiTunes object from Perl:

    $iTunesApp = new Win32::OLE("iTunes.Application");

Public Member Functions
Player Controls
HRESULT	BackTrack ()
	Reposition to the beginning of the current track or go to the previous track if already at start of current track.
HRESULT	FastForward ()
	Skip forward in a playing track.
HRESULT	NextTrack ()
	Advance to the next track in the current playlist.
HRESULT	Pause ()
	Pause playback.
HRESULT	Play ()
	Play the currently targeted track.
HRESULT	PlayFile ([in] BSTR filePath)
	Play the specified file path, adding it to the library if not already present.
HRESULT	PlayPause ()
	Toggle the playing/paused state of the current track.
HRESULT	PreviousTrack ()
	Return to the previous track in the current playlist.
HRESULT	Resume ()
	Disable fast forward/rewind and resume playback, if playing.
HRESULT	Rewind ()
	Skip backwards in a playing track.
HRESULT	Stop ()
	Stop playback.
HRESULT	GetPlayerButtonsState ([out] VARIANT_BOOL *previousEnabled,[out] ITPlayButtonState *playPauseStopState,[out] VARIANT_BOOL *nextEnabled)
	Retrieves the current state of the player buttons in the window containing the currently targeted track. If there is no currently targeted track, returns the current state of the player buttons in the main browser window.
HRESULT	PlayerButtonClicked ([in] ITPlayerButton playerButton,[in] long playerButtonModifierKeys)
	Simulate a click on a player control button in the window containing the currently targeted track. If there is no currently targeted track, simulates a click on a player control button in the main browser window.
Conversion Methods
HRESULT	ConvertFile ([in] BSTR filePath,[out, retval] IITOperationStatus **iStatus)
	Start converting the specified file or folder.
HRESULT	ConvertFiles ([in] VARIANT *filePaths,[out, retval] IITOperationStatus **iStatus)
	Start converting the specified files and/or folders.
HRESULT	ConvertTrack ([in] VARIANT *iTrackToConvert,[out, retval] IITOperationStatus **iStatus)
	Start converting the specified track.
HRESULT	ConvertTracks ([in] VARIANT *iTracksToConvert,[out, retval] IITOperationStatus **iStatus)
	Start converting the specified tracks.
HRESULT	ConvertFile2 ([in] BSTR filePath,[out, retval] IITConvertOperationStatus **iStatus)
	Start converting the specified file or folder.
HRESULT	ConvertFiles2 ([in] VARIANT *filePaths,[out, retval] IITConvertOperationStatus **iStatus)
	Start converting the specified files and/or folders.
HRESULT	ConvertTrack2 ([in] VARIANT *iTrackToConvert,[out, retval] IITConvertOperationStatus **iStatus)
	Start converting the specified track.
HRESULT	ConvertTracks2 ([in] VARIANT *iTracksToConvert,[out, retval] IITConvertOperationStatus **iStatus)
	Start converting the specified tracks.
Miscellaneous Methods
HRESULT	CheckVersion ([in] long majorVersion,[in] long minorVersion,[out, retval] VARIANT_BOOL *isCompatible)
	Returns true if this version of the iTunes type library is compatible with the specified version.
HRESULT	GetITObjectByID ([in] long sourceID,[in] long playlistID,[in] long trackID,[in] long databaseID,[out, retval] IITObject **iObject)
	Returns an IITObject corresponding to the specified IDs.
HRESULT	CreatePlaylist ([in] BSTR playlistName,[out, retval] IITPlaylist **iPlaylist)
	Creates a new playlist in the main library.
HRESULT	OpenURL ([in] BSTR url)
	Open the specified iTunes Store or streaming audio URL.
HRESULT	GotoMusicStoreHomePage ()
	Go to the iTunes Store home page.
HRESULT	UpdateIPod ()
	Update the contents of the iPod.
HRESULT	Quit ()
	Exits the iTunes application.
HRESULT	CreateEQPreset ([in] BSTR eqPresetName,[out, retval] IITEQPreset **iEQPreset)
	Creates a new EQ preset.
HRESULT	CreatePlaylistInSource ([in] BSTR playlistName,[in] VARIANT *iSource,[out, retval] IITPlaylist **iPlaylist)
	Creates a new playlist in an existing source.
HRESULT	SubscribeToPodcast ([in] BSTR url)
	Subscribes to the specified podcast feed URL. Any "unsafe" characters in the URL should already be converted into their corresponding escape sequences, iTunes will not do this.
HRESULT	UpdatePodcastFeeds ()
	Updates all podcast feeds. This is equivalent to the user pressing the Update button when Podcasts is selected in the Source list.
HRESULT	CreateFolder ([in] BSTR folderName,[out, retval] IITPlaylist **iFolder)
	Creates a new folder in the main library.
HRESULT	CreateFolderInSource ([in] BSTR folderName,[in] VARIANT *iSource,[out, retval] IITPlaylist **iFolder)
	Creates a new folder in an existing source.
HRESULT	GetITObjectPersistentIDs ([in] VARIANT *iObject,[out] long *highID,[out] long *lowID)
	Returns the high and low 32 bits of the persistent ID of the specified IITObject. See the documentation on IITObject for more information on persistent IDs.
Collection Properties
HRESULT	Sources ([out, retval] IITSourceCollection **iSourceCollection)
	Returns a collection of music sources (music library, CD, device, etc.).
HRESULT	Encoders ([out, retval] IITEncoderCollection **iEncoderCollection)
	Returns a collection of encoders.
HRESULT	EQPresets ([out, retval] IITEQPresetCollection **iEQPresetCollection)
	Returns a collection of EQ presets.
HRESULT	Visuals ([out, retval] IITVisualCollection **iVisualCollection)
	Returns a collection of visual plug-ins.
HRESULT	Windows ([out, retval] IITWindowCollection **iWindowCollection)
	Returns a collection of visual plug-ins.
Sound Properties
HRESULT	SoundVolume ([out, retval] long *volume)
	Returns the sound output volume (0 = minimum, 100 = maximum).
HRESULT	SoundVolume ([in] long volume)
	Sets the sound output volume (0 = minimum, 100 = maximum).
HRESULT	Mute ([out, retval] VARIANT_BOOL *isMuted)
	Returns true if the sound output is muted.
HRESULT	Mute ([in] VARIANT_BOOL shouldMute)
	Sets sound output mute state.
Player Properties
HRESULT	PlayerState ([out, retval] ITPlayerState *playerState)
	Returns the current player state.
HRESULT	PlayerPosition ([out, retval] long *playerPos)
	Returns the player's position within the currently playing track in seconds.
HRESULT	PlayerPosition ([in] long playerPos)
	Sets the player's position within the currently playing track in seconds.
Encoder Properties
HRESULT	CurrentEncoder ([out, retval] IITEncoder **iEncoder)
	Returns the currently selected encoder (AAC, MP3, AIFF, WAV, etc.).
HRESULT	CurrentEncoder ([in] IITEncoder *iEncoder)
	Sets the current encoder (AAC, MP3, AIFF, WAV, etc.).
Visual Properties
HRESULT	VisualsEnabled ([out, retval] VARIANT_BOOL *isEnabled)
	Returns true if visuals are currently being displayed.
HRESULT	VisualsEnabled ([in] VARIANT_BOOL shouldEnable)
	Set whether visuals should be displayed.
HRESULT	FullScreenVisuals ([out, retval] VARIANT_BOOL *isFullScreen)
	Returns true if the visuals are displayed using the entire screen.
HRESULT	FullScreenVisuals ([in] VARIANT_BOOL shouldUseFullScreen)
	Set whether visuals should be displayed using the entire screen.
HRESULT	VisualSize ([out, retval] ITVisualSize *visualSize)
	Returns the size of the displayed visual.
HRESULT	VisualSize ([in] ITVisualSize visualSize)
	Sets the size of the displayed visual.
HRESULT	CurrentVisual ([out, retval] IITVisual **iVisual)
	Returns the currently selected visual plug-in.
HRESULT	CurrentVisual ([in] IITVisual *iVisual)
	Sets the current visual plug-in.
EQ Properties
HRESULT	EQEnabled ([out, retval] VARIANT_BOOL *isEnabled)
	Returns true if the equalizer is enabled.
HRESULT	EQEnabled ([in] VARIANT_BOOL shouldEnable)
	Set whether the equalizer should be enabled.
HRESULT	CurrentEQPreset ([out, retval] IITEQPreset **iEQPreset)
	Returns the currently selected EQ preset.
HRESULT	CurrentEQPreset ([in] IITEQPreset *iEQPreset)
	Sets the current EQ preset.
Streaming Properties
HRESULT	CurrentStreamTitle ([out, retval] BSTR *streamTitle)
	Returns the name of the current song in the playing stream (provided by streaming server).
HRESULT	CurrentStreamURL ([out, retval] BSTR *streamURL)
	Returns the URL of the playing stream or streaming web site (provided by streaming server).
Miscellaneous Properties
HRESULT	BrowserWindow ([out, retval] IITBrowserWindow **iBrowserWindow)
	Returns the main iTunes browser window.
HRESULT	EQWindow ([out, retval] IITWindow **iEQWindow)
	Returns the EQ window.
HRESULT	LibrarySource ([out, retval] IITSource **iLibrarySource)
	Returns the source that represents the main library.
HRESULT	LibraryPlaylist ([out, retval] IITLibraryPlaylist **iLibraryPlaylist)
	Returns the main library playlist in the main library source.
HRESULT	CurrentTrack ([out, retval] IITTrack **iTrack)
	Returns the currently targeted track.
HRESULT	CurrentPlaylist ([out, retval] IITPlaylist **iPlaylist)
	Returns the playlist containing the currently targeted track.
HRESULT	SelectedTracks ([out, retval] IITTrackCollection **iTrackCollection)
	Returns a collection containing the currently selected track or tracks.
HRESULT	Version ([out, retval] BSTR *version)
	Returns the version of the iTunes application.
HRESULT	AppCommandMessageProcessingEnabled ([out, retval] VARIANT_BOOL *isEnabled)
	Returns true if iTunes will process APPCOMMAND Windows messages.
HRESULT	AppCommandMessageProcessingEnabled ([in] VARIANT_BOOL shouldEnable)
	Controls whether iTunes should process APPCOMMAND Windows messages.
HRESULT	ForceToForegroundOnDialog ([out, retval] VARIANT_BOOL *forceToForegroundOnDialog)
	Returns true if iTunes will force itself to be the foreground application when it displays a dialog.
HRESULT	ForceToForegroundOnDialog ([in] VARIANT_BOOL forceToForegroundOnDialog)
	Controls whether iTunes will force itself to be the foreground application when it displays a dialog.
HRESULT	CanSetShuffle ([in] VARIANT *iPlaylist,[out, retval] VARIANT_BOOL *canSetShuffle)
	Returns true if the IITPlaylist::Shuffle property is writable for the specified playlist.
HRESULT	CanSetSongRepeat ([in] VARIANT *iPlaylist,[out, retval] VARIANT_BOOL *canSetSongRepeat)
	Returns true if the IITPlaylist::SongRepeat property is writable for the specified playlist.
HRESULT	ConvertOperationStatus ([out, retval] IITConvertOperationStatus **iStatus)
	Returns an IITConvertOperationStatus object if there is currently a conversion in progress.
HRESULT	SoundVolumeControlEnabled ([out, retval] VARIANT_BOOL *isEnabled)
	Returns true if the sound volume control is enabled.
HRESULT	LibraryXMLPath ([out, retval] BSTR *filePath)
	Returns the full path to the current iTunes library XML file. The default file is "iTunes Music Library.xml" inside the "iTunes" folder in the user's "My Music" folder.
HRESULT	ITObjectPersistentIDHigh ([in] VARIANT *iObject,[out, retval] long *highID)
	Returns the high 32 bits of the persistent ID of the specified IITObject. See the documentation on IITObject for more information on persistent IDs.
HRESULT	ITObjectPersistentIDLow ([in] VARIANT *iObject,[out, retval] long *lowID)
	Returns the low 32 bits of the persistent ID of the specified IITObject. See the documentation on IITObject for more information on persistent IDs.

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Member Function Documentation

HRESULT IiTunes::AppCommandMessageProcessingEnabled (  [in] VARIANT_BOOL  shouldEnable  )

Controls whether iTunes should process APPCOMMAND Windows messages. If true, iTunes will process Windows APPCOMMAND messages such as APPCOMMAND_MEDIA_PLAY, APPCOMMAND_MEDIA_PAUSE, APPCOMMAND_MEDIA_NEXTTRACK, etc. Typically, these messages are generated by special keys on multimedia keyboards. Note: This property is available in iTunes 4.6 and later (iTunes type library 1.1 and later). Parameters: shouldEnable  True if iTunes should process APPCOMMAND Windows messages. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::AppCommandMessageProcessingEnabled (  [out, retval] VARIANT_BOOL *  isEnabled  )

Returns true if iTunes will process APPCOMMAND Windows messages. If true, iTunes will process Windows APPCOMMAND messages such as APPCOMMAND_MEDIA_PLAY, APPCOMMAND_MEDIA_PAUSE, APPCOMMAND_MEDIA_NEXTTRACK, etc. Typically, these messages are generated by special keys on multimedia keyboards. Note: This property is available in iTunes 4.6 and later (iTunes type library 1.1 and later). Parameters: isEnabled  Returns true if iTunes will process APPCOMMAND Windows messages. Return values: S_OK  The operation was successful. E_POINTER  isEnabled is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::BackTrack (   )

Reposition to the beginning of the current track or go to the previous track if already at start of current track. Note: As of iTunes 4.7 and later (iTunes type library 1.2 and later), iTunes will suppress the authorization dialog if this method attempts to start playing a purchased track that has not been authorized for playback on the current machine. The unauthorized track is skipped in this case. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::BrowserWindow (  [out, retval] IITBrowserWindow **  iBrowserWindow  )

Returns the main iTunes browser window. Parameters: iBrowserWindow  An IITBrowserWindow object corresponding to the main iTunes browser window. Return values: S_OK  The operation was successful. E_POINTER  iBrowserWindow is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CanSetShuffle (  [in] VARIANT *  iPlaylist, [out, retval] VARIANT_BOOL *  canSetShuffle )

Returns true if the IITPlaylist::Shuffle property is writable for the specified playlist. Note: This property is available in iTunes 4.7 and later (iTunes type library 1.2 and later). Parameters: iPlaylist  A VARIANT of type VT_DISPATCH that points to an IITPlaylist. canSetShuffle  True if the IITPlaylist::Shuffle property is writable for the specified playlist. Return values: S_OK  The operation was successful. E_INVALIDARG  iPlaylist is not the correct VARIANT type. E_POINTER  iPlaylist or canSetShuffle is NULL. ITUNES_E_OBJECTDELETED  The playlist has been deleted. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CanSetSongRepeat (  [in] VARIANT *  iPlaylist, [out, retval] VARIANT_BOOL *  canSetSongRepeat )

Returns true if the IITPlaylist::SongRepeat property is writable for the specified playlist. Note: This property is available in iTunes 4.7 and later (iTunes type library 1.2 and later). Parameters: iPlaylist  A VARIANT of type VT_DISPATCH that points to an IITPlaylist. canSetSongRepeat  True if the IITPlaylist::SongRepeat property is writable for the specified playlist. Return values: S_OK  The operation was successful. E_INVALIDARG  iPlaylist is not the correct VARIANT type. E_POINTER  iPlaylist or canSetShuffle is NULL. ITUNES_E_OBJECTDELETED  The playlist has been deleted. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CheckVersion (  [in] long  majorVersion, [in] long  minorVersion, [out, retval] VARIANT_BOOL *  isCompatible )

Returns true if this version of the iTunes type library is compatible with the specified version. The current major version is kITTypeLibrary_MajorVersion. The current minor version is kITTypeLibrary_MinorVersion. iTunes 4.5 included version 1.0 of the iTunes type library. iTunes 4.6 included version 1.1 of the iTunes type library. Parameters: majorVersion  Major version of iTunes interface. minorVersion  Minor version of iTunes interface. isCompatible  Returns true if iTunes is compatible with the indicated interface version. Return values: S_OK  The operation was successful. E_POINTER  isCompatible is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ConvertFile (  [in] BSTR  filePath, [out, retval] IITOperationStatus **  iStatus )

Start converting the specified file or folder. The file or files will added to the main library after conversion. For a file on an audio CD, this is equivalent to importing the song. Use IiTunes::CurrentEncoder() to set the current encoder before converting. Note: As of iTunes 4.6 and later (iTunes type library 1.1 and later), you should use IiTunes::ConvertFile2(), which returns an IITConvertOperationStatus object to allow clients to retrieve additional conversion progress information. Parameters: filePath  The full path to the file or folder to convert. iStatus  Returns an IITOperationStatus object corresponding to the asynchronous operation. Return values: S_OK  The operation was successful. E_POINTER  filePath or iStatus is NULL. E_INVALIDARG  filePath is empty or too long. ITUNES_E_CONVERSIONINPROGRESS  There is already a conversion in progress. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ConvertFile2 (  [in] BSTR  filePath, [out, retval] IITConvertOperationStatus **  iStatus )

Start converting the specified file or folder. The file or files will added to the main library after conversion. For a file on an audio CD, this is equivalent to importing the song. Use IiTunes::CurrentEncoder() to set the current encoder before converting. Note: This method is available in iTunes 4.6 and later (iTunes type library 1.1 and later). Parameters: filePath  The full path to the file or folder to convert. iStatus  Returns an IITConvertOperationStatus object corresponding to the asynchronous operation. Return values: S_OK  The operation was successful. E_POINTER  filePath or iStatus is NULL. E_INVALIDARG  filePath is empty or too long. ITUNES_E_CONVERSIONINPROGRESS  There is already a conversion in progress. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ConvertFiles (  [in] VARIANT *  filePaths, [out, retval] IITOperationStatus **  iStatus )

Start converting the specified files and/or folders. The files will added to the main library after conversion. For files on an audio CD, this is equivalent to importing the songs. Use IiTunes::CurrentEncoder() to set the current encoder before converting. Note: As of iTunes 4.6 and later (iTunes type library 1.1 and later), you should use IiTunes::ConvertFiles2(), which returns an IITConvertOperationStatus object to allow clients to retrieve additional conversion progress information. Parameters: filePaths  The single-dimensioned array of full paths to each file or folder. filePaths can be of type VT_ARRAY|VT_VARIANT, where each entry is a VT_BSTR, or VT_ARRAY|VT_BSTR. You can also pass a JScript Array object. iStatus  Returns an IITOperationStatus object corresponding to the asynchronous operation. Return values: S_OK  The operation was successful. E_POINTER  filePaths or iStatus is NULL. E_INVALIDARG  filePaths is not the correct VARIANT type. ITUNES_E_CONVERSIONINPROGRESS  There is already a conversion in progress. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ConvertFiles2 (  [in] VARIANT *  filePaths, [out, retval] IITConvertOperationStatus **  iStatus )

Start converting the specified files and/or folders. The files will added to the main library after conversion. For files on an audio CD, this is equivalent to importing the songs. Use IiTunes::CurrentEncoder() to set the current encoder before converting. Note: This method is available in iTunes 4.6 and later (iTunes type library 1.1 and later). Parameters: filePaths  The single-dimensioned array of full paths to each file or folder. filePaths can be of type VT_ARRAY|VT_VARIANT, where each entry is a VT_BSTR, or VT_ARRAY|VT_BSTR. You can also pass a JScript Array object. iStatus  Returns an IITConvertOperationStatus object corresponding to the asynchronous operation. Return values: S_OK  The operation was successful. E_POINTER  filePaths or iStatus is NULL. E_INVALIDARG  filePaths is not the correct VARIANT type. ITUNES_E_CONVERSIONINPROGRESS  There is already a conversion in progress. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ConvertOperationStatus (  [out, retval] IITConvertOperationStatus **  iStatus  )

Returns an IITConvertOperationStatus object if there is currently a conversion in progress. Note: This property is available in iTunes 4.8 and later (iTunes type library 1.3 and later). Parameters: iStatus  An IITConvertOperationStatus object which can be used to monitor the current conversion operation. Will be set to NULL if there is no conversion operation in progress. Return values: S_OK  The operation was successful. S_FALSE  There is no conversion operation in progress. E_POINTER  iStatus is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ConvertTrack (  [in] VARIANT *  iTrackToConvert, [out, retval] IITOperationStatus **  iStatus )

Start converting the specified track. For a track in an audio CD playlist, this is equivalent to importing the song. Use IiTunes::CurrentEncoder() to set the current encoder before converting. Note: As of iTunes 4.6 and later (iTunes type library 1.1 and later), you should use IiTunes::ConvertTrack2(), which returns an IITConvertOperationStatus object to allow clients to retrieve additional conversion progress information. Parameters: iTrackToConvert  The track to convert. This must be a VARIANT of type VT_DISPATCH that points to an IITTrack. iStatus  Returns an IITOperationStatus object corresponding to the asynchronous operation. Return values: S_OK  The operation was successful. E_POINTER  iTrackToConvert or iStatus is NULL. E_INVALIDARG  iTrackToConvert is not the correct VARIANT type. ITUNES_E_CONVERSIONINPROGRESS  There is already a conversion in progress. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ConvertTrack2 (  [in] VARIANT *  iTrackToConvert, [out, retval] IITConvertOperationStatus **  iStatus )

Start converting the specified track. For a track in an audio CD playlist, this is equivalent to importing the song. Use IiTunes::CurrentEncoder() to set the current encoder before converting. Note: This method is available in iTunes 4.6 and later (iTunes type library 1.1 and later). Parameters: iTrackToConvert  The track to convert. This must be a VARIANT of type VT_DISPATCH that points to an IITTrack. iStatus  Returns an IITConvertOperationStatus object corresponding to the asynchronous operation. Return values: S_OK  The operation was successful. E_POINTER  iTrackToConvert or iStatus is NULL. E_INVALIDARG  iTrackToConvert is not the correct VARIANT type. ITUNES_E_CONVERSIONINPROGRESS  There is already a conversion in progress. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ConvertTracks (  [in] VARIANT *  iTracksToConvert, [out, retval] IITOperationStatus **  iStatus )

Start converting the specified tracks. For a tracks in an audio CD playlist, this is equivalent to importing the songs. Use IiTunes::CurrentEncoder() to set the current encoder before converting. Note: As of iTunes 4.6 and later (iTunes type library 1.1 and later), you should use IiTunes::ConvertTracks2(), which returns an IITConvertOperationStatus object to allow clients to retrieve additional conversion progress information. Parameters: iTracksToConvert  The tracks to convert. This must be a VARIANT of type VT_DISPATCH that points to an IITTrackCollection. iStatus  Returns an IITOperationStatus object corresponding to the asynchronous operation. Return values: S_OK  The operation was successful. E_POINTER  iTracksToConvert or iStatus is NULL. E_INVALIDARG  iTracksToConvert is not the correct VARIANT type. ITUNES_E_CONVERSIONINPROGRESS  There is already a conversion in progress. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ConvertTracks2 (  [in] VARIANT *  iTracksToConvert, [out, retval] IITConvertOperationStatus **  iStatus )

Start converting the specified tracks. For a tracks in an audio CD playlist, this is equivalent to importing the songs. Use IiTunes::CurrentEncoder() to set the current encoder before converting. Note: This method is available in iTunes 4.6 and later (iTunes type library 1.1 and later). Parameters: iTracksToConvert  The tracks to convert. This must be a VARIANT of type VT_DISPATCH that points to an IITTrackCollection. iStatus  Returns an IITConvertOperationStatus object corresponding to the asynchronous operation. Return values: S_OK  The operation was successful. E_POINTER  iTracksToConvert or iStatus is NULL. E_INVALIDARG  iTracksToConvert is not the correct VARIANT type. ITUNES_E_CONVERSIONINPROGRESS  There is already a conversion in progress. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CreateEQPreset (  [in] BSTR  eqPresetName, [out, retval] IITEQPreset **  iEQPreset )

Creates a new EQ preset. The EQ preset will be created "flat", i.e. the preamp and all band levels will be set to 0. EQ preset names cannot start with leading spaces. If you specify a name that starts with leading spaces they will be stripped out. If eqPresetName is NULL or empty, the EQ preset will be created with a default name. Note: This method is available in iTunes 4.7 and later (iTunes type library 1.2 and later). Parameters: eqPresetName  The name of the new EQ preset (may be NULL or empty). iEQPreset  Returns an IITEQPreset object corresponding to the new EQ preset. Return values: S_OK  The operation was successful. E_POINTER  iEQPreset is NULL. ITUNES_E_OBJECTEXISTS  An EQ preset with this name already exists. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CreateFolder (  [in] BSTR  folderName, [out, retval] IITPlaylist **  iFolder )

Creates a new folder in the main library. If folderName is NULL or empty, the folder will be created with a default name. Note: This method is available in iTunes 6.0.2 and later (iTunes type library 1.7 and later). Parameters: folderName  The name of the new folder (may be NULL or empty). iFolder  Returns an IITPlaylist object corresponding to the new folder. Return values: S_OK  The operation was successful. E_POINTER  iFolder is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CreateFolderInSource (  [in] BSTR  folderName, [in] VARIANT *  iSource, [out, retval] IITPlaylist **  iFolder )

Creates a new folder in an existing source. You may not be able to create a folder in every source. For example, you cannot create a folder in an audio CD source, or in an iPod source if it is in auto update mode. If folderName is NULL or empty, the folder will be created with a default name. Note: This method is available in iTunes 6.0.2 and later (iTunes type library 1.7 and later). Parameters: folderName  The name of the new folder (may be NULL or empty). iSource  The source that will contain the new folder. This is a VARIANT of type VT_DISPATCH that points to an IITSource. iFolder  Returns an IITPlaylist object corresponding to the new folder. Return values: S_OK  The operation was successful. E_POINTER  iSource or iFolder is NULL. E_INVALIDARG  iSource is not the correct VARIANT type. ITUNES_E_OBJECTLOCKED  A folder cannot be created in this source. ITUNES_E_OBJECTDELETED  The source has been deleted. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CreatePlaylist (  [in] BSTR  playlistName, [out, retval] IITPlaylist **  iPlaylist )

Creates a new playlist in the main library. If playlistName is NULL or empty, the playlist will be created with a default name. Parameters: playlistName  The name of the new playlist (may be NULL or empty). iPlaylist  Returns an IITPlaylist object corresponding to the new playlist. Return values: S_OK  The operation was successful. E_POINTER  iPlaylist is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CreatePlaylistInSource (  [in] BSTR  playlistName, [in] VARIANT *  iSource, [out, retval] IITPlaylist **  iPlaylist )

Creates a new playlist in an existing source. You may not be able to create a playlist in every source. For example, you cannot create a playlist in an audio CD source, or in an iPod source if it is in auto update mode. If playlistName is NULL or empty, the playlist will be created with a default name. Note: This method is available in iTunes 4.7 and later (iTunes type library 1.2 and later). Parameters: playlistName  The name of the new playlist (may be NULL or empty). iSource  The source that will contain the new playlist. This is a VARIANT of type VT_DISPATCH that points to an IITSource. iPlaylist  Returns an IITPlaylist object corresponding to the new playlist. Return values: S_OK  The operation was successful. E_POINTER  iSource or iPlaylist is NULL. E_INVALIDARG  iSource is not the correct VARIANT type. ITUNES_E_OBJECTLOCKED  A playlist cannot be created in this source. ITUNES_E_OBJECTDELETED  The source has been deleted. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CurrentEncoder (  [in] IITEncoder *  iEncoder  )

Sets the current encoder (AAC, MP3, AIFF, WAV, etc.). Parameters: iEncoder  An IITEncoder object corresponding to the new encoder. Return values: S_OK  The operation was successful. E_POINTER  iEncoder is NULL. ITUNES_E_OBJECTDELETED  The encoder corresponding to iEncoder is not available. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CurrentEncoder (  [out, retval] IITEncoder **  iEncoder  )

Returns the currently selected encoder (AAC, MP3, AIFF, WAV, etc.). Parameters: iEncoder  Returns an IITEncoder object corresponding to the current encoder. Return values: S_OK  The operation was successful. E_POINTER  iEncoder is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CurrentEQPreset (  [in] IITEQPreset *  iEQPreset  )

Sets the current EQ preset. Parameters: iEQPreset  An IITEQPreset object corresponding to the new EQ preset. Return values: S_OK  The operation was successful. E_POINTER  iEQPreset is NULL. ITUNES_E_OBJECTDELETED  The EQ preset corresponding to iEQPreset is not available. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CurrentEQPreset (  [out, retval] IITEQPreset **  iEQPreset  )

Returns the currently selected EQ preset. Parameters: iEQPreset  Returns an IITEQPreset object corresponding to the current EQ preset. Return values: S_OK  The operation was successful. E_POINTER  iEQPreset is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CurrentPlaylist (  [out, retval] IITPlaylist **  iPlaylist  )

Returns the playlist containing the currently targeted track. Parameters: iPlaylist  An IITPlaylist object corresponding to the playlist containing the currently targeted track. Will be set to NULL if there is no currently targeted playlist. Return values: S_OK  The operation was successful. S_FALSE  There is no currently targeted track, so there is no currently targeted playlist. E_POINTER  iPlaylist is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CurrentStreamTitle (  [out, retval] BSTR *  streamTitle  )

Returns the name of the current song in the playing stream (provided by streaming server). Parameters: streamTitle  Returns the name of the current song in the playing stream. Will be set to NULL if no stream title is available. Return values: S_OK  The operation was successful. E_POINTER  streamTitle is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CurrentStreamURL (  [out, retval] BSTR *  streamURL  )

Returns the URL of the playing stream or streaming web site (provided by streaming server). Parameters: streamURL  Returns the URL of the playing stream or streaming web site. Will be set to NULL if no stream URL is available. Return values: S_OK  The operation was successful. E_POINTER  streamURL is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CurrentTrack (  [out, retval] IITTrack **  iTrack  )

Returns the currently targeted track. Parameters: iTrack  An IITTrack object corresponding to the currently targeted track. Will be set to NULL if there is no currently targeted track. Return values: S_OK  The operation was successful. S_FALSE  There is no currently targeted track. E_POINTER  iTrack is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CurrentVisual (  [in] IITVisual *  iVisual  )

Sets the current visual plug-in. Parameters: iVisual  An IITVisual object corresponding to the new visual plug-in. Return values: S_OK  The operation was successful. E_POINTER  iVisual is NULL. ITUNES_E_OBJECTDELETED  The visual plug-in corresponding to iVisual is not available. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::CurrentVisual (  [out, retval] IITVisual **  iVisual  )

Returns the currently selected visual plug-in. Parameters: iVisual  Returns an IITVisual object corresponding to the current visual plug-in. Return values: S_OK  The operation was successful. E_POINTER  iVisual is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Encoders (  [out, retval] IITEncoderCollection **  iEncoderCollection  )

Returns a collection of encoders. Parameters: iEncoderCollection  Collection of IITEncoder objects. Return values: S_OK  The operation was successful. E_POINTER  iEncoderCollection is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::EQEnabled (  [in] VARIANT_BOOL  shouldEnable  )

Set whether the equalizer should be enabled. Parameters: shouldEnable  True if the equalizer should be enabled. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::EQEnabled (  [out, retval] VARIANT_BOOL *  isEnabled  )

Returns true if the equalizer is enabled. Parameters: isEnabled  True if the equalizer is enabled. Return values: S_OK  The operation was successful. E_POINTER  isEnabled is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::EQPresets (  [out, retval] IITEQPresetCollection **  iEQPresetCollection  )

Returns a collection of EQ presets. Parameters: iEQPresetCollection  Collection of IITEQPreset objects. Return values: S_OK  The operation was successful. E_POINTER  iEQPresetCollection is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::EQWindow (  [out, retval] IITWindow **  iEQWindow  )

Returns the EQ window. Parameters: iEQWindow  An IITWindow object corresponding to the EQ window. Return values: S_OK  The operation was successful. E_POINTER  iEQWindow is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::FastForward (   )

Skip forward in a playing track. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ForceToForegroundOnDialog (  [in] VARIANT_BOOL  forceDialogsToForeground  )

Controls whether iTunes will force itself to be the foreground application when it displays a dialog. This property is false by default, since typically a user will not want iTunes to come to the foreground if it isn't already the foreground application. For example, a user may be listening to a radio stream in the background, and a progress dialog could be displayed if the stream needs to be rebuffered. Since this dialog will go away when the rebuffering is complete, there is no reason for iTunes be forced to the foreground. Note: This property is available in iTunes 4.6 and later (iTunes type library 1.1 and later). Parameters: forceDialogsToForeground  True if iTunes should force itself to be the foreground application when it displays a dialog. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ForceToForegroundOnDialog (  [out, retval] VARIANT_BOOL *  forceDialogsToForeground  )

Returns true if iTunes will force itself to be the foreground application when it displays a dialog. This property is false by default, since typically a user will not want iTunes to come to the foreground if it isn't already the foreground application. For example, a user may be listening to a radio stream in the background, and a progress dialog could be displayed if the stream needs to be rebuffered. Since this dialog will go away when the rebuffering is complete, there is no reason for iTunes be forced to the foreground. Note: This property is available in iTunes 4.6 and later (iTunes type library 1.1 and later). Parameters: forceDialogsToForeground  Returns true if iTunes will force itself to be the foreground application when it displays a dialog. Return values: S_OK  The operation was successful. E_POINTER  forceDialogsToForeground is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::FullScreenVisuals (  [in] VARIANT_BOOL  shouldUseFullScreen  )

Set whether visuals should be displayed using the entire screen. Parameters: shouldUseFullScreen  True if the visuals should be displayed using the entire screen. Return values: S_OK  The operation was successful. E_ACCESSDENIED  This setting cannot be changed currently. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::FullScreenVisuals (  [out, retval] VARIANT_BOOL *  isFullScreen  )

Returns true if the visuals are displayed using the entire screen. Parameters: isFullScreen  True if the visuals are displayed using the entire screen. Return values: S_OK  The operation was successful. E_POINTER  isFullScreen is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::GetITObjectByID (  [in] long  sourceID, [in] long  playlistID, [in] long  trackID, [in] long  databaseID, [out, retval] IITObject **  iObject )

Returns an IITObject corresponding to the specified IDs. The object may be a source, playlist, or track. Parameters: sourceID  The ID that identifies the source. Valid for a source, playlist, or track. playlistID  The ID that identifies the playlist. Valid for a playlist or track. Must be zero for a source. trackID  The ID that identifies the track within the playlist. Valid for a track. Must be zero for a source or playlist. databaseID  The ID that identifies the track, independent of its playlist. Valid for a track. Must be zero for a source or playlist. iObject  Returns an IITObject object corresponding to the specified IDs. Will be set to NULL if no object could be retrieved. Return values: S_OK  The operation was successful. S_FALSE  An object with the specified IDs could not be found. E_INVALIDARG  Invalid combination of IDs. E_POINTER  iObject is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::GetITObjectPersistentIDs (  [in] VARIANT *  iObject, [out] long *  highID, [out] long *  lowID )

Returns the high and low 32 bits of the persistent ID of the specified IITObject. See the documentation on IITObject for more information on persistent IDs. This method is not usable from scripting clients, since it returns multiple output parameters. Scripting clients must use IiTunes::ITObjectPersistentIDHigh() and IiTunes::ITObjectPersistentIDLow() properties instead. The object may be a source, playlist, or track. Note: This property is available in iTunes 7.7 and later (iTunes type library 1.11 and later). Parameters: iObject  A VARIANT of type VT_DISPATCH that points to an IITObject. highID  The high 32 bits of the 64-bit persistent ID. lowID  The low 32 bits of the 64-bit persistent ID. Return values: S_OK  The operation was successful. E_POINTER  iObject, highID, or lowID is NULL. E_INVALIDARG  iObject is not the correct VARIANT type. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::GetPlayerButtonsState (  [out] VARIANT_BOOL *  previousEnabled, [out] ITPlayButtonState *  playPauseStopState, [out] VARIANT_BOOL *  nextEnabled )

Retrieves the current state of the player buttons in the window containing the currently targeted track. If there is no currently targeted track, returns the current state of the player buttons in the main browser window. This method is not usable from scripting clients, since it returns multiple output parameters. Note: This method is available in iTunes 4.7 and later (iTunes type library 1.2 and later). Parameters: previousEnabled  Returns whether the previous button is enabled. playPauseStopState  Returns whether the play/pause/stop button is enabled, and whether it is currently showing play, pause, or stop. nextEnabled  Returns whether the next button is enabled. Return values: S_OK  The operation was successful. E_POINTER  previousEnabled, playPauseStopState, or nextEnabled is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::GotoMusicStoreHomePage (   )

Go to the iTunes Store home page. If the iTunes Store is already open in a separate window, the home page will be displayed there. Otherwise, it will be displayed in the main browser window. The window containing the store will be brought to the foreground. Return values: S_OK  The operation was successful. ITUNES_E_MUSICSTOREDISABLED  Access to the iTunes Store is disabled in the preferences. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ITObjectPersistentIDHigh (  [in] VARIANT *  iObject, [out, retval] long *  highID )

Returns the high 32 bits of the persistent ID of the specified IITObject. See the documentation on IITObject for more information on persistent IDs. This property and IiTunes::ITObjectPersistentIDLow() are meant to be used from scripting clients, since they can't handle multiple output parameters. If you don't need an automation-compatible interface, use the IiTunes::GetITObjectPersistentIDs() method instead. The object may be a source, playlist, or track. Note: This property is available in iTunes 7.7 and later (iTunes type library 1.11 and later). Parameters: iObject  A VARIANT of type VT_DISPATCH that points to an IITObject. highID  The high 32 bits of the 64-bit persistent ID. Return values: S_OK  The operation was successful. E_POINTER  iObject or highID is NULL. E_INVALIDARG  iObject is not the correct VARIANT type. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::ITObjectPersistentIDLow (  [in] VARIANT *  iObject, [out, retval] long *  lowID )

Returns the low 32 bits of the persistent ID of the specified IITObject. See the documentation on IITObject for more information on persistent IDs. This property and IiTunes::ITObjectPersistentIDHigh() are meant to be used from scripting clients, since they can't handle multiple output parameters. If you don't need an automation-compatible interface, use the IiTunes::GetITObjectPersistentIDs() method instead. The object may be a source, playlist, or track. Note: This property is available in iTunes 7.7 and later (iTunes type library 1.11 and later). Parameters: iObject  A VARIANT of type VT_DISPATCH that points to an IITObject. lowID  The low 32 bits of the 64-bit persistent ID. Return values: S_OK  The operation was successful. E_POINTER  iObject or highID is NULL. E_INVALIDARG  iObject is not the correct VARIANT type. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::LibraryPlaylist (  [out, retval] IITLibraryPlaylist **  iLibraryPlaylist  )

Returns the main library playlist in the main library source. Parameters: iLibraryPlaylist  An IITLibraryPlaylist object corresponding to the main library playlist. Return values: S_OK  The operation was successful. E_POINTER  iLibraryPlaylist is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::LibrarySource (  [out, retval] IITSource **  iLibrarySource  )

Returns the source that represents the main library. You can also find the main library source by iterating over IiTunes::Sources() and looking for an IITSource of kind ITSourceKindLibrary. Parameters: iLibrarySource  An IITSource object corresponding to the main library. Return values: S_OK  The operation was successful. E_POINTER  iLibrarySource is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::LibraryXMLPath (  [out, retval] BSTR *  filePath  )

Returns the full path to the current iTunes library XML file. The default file is "iTunes Music Library.xml" inside the "iTunes" folder in the user's "My Music" folder. Note: This property is available in iTunes 7.0 and later (iTunes type library 1.8 and later). Parameters: filePath  The full path to the current iTunes library XML file. Return values: S_OK  The operation was successful. E_POINTER  filePath is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Mute (  [in] VARIANT_BOOL  shouldMute  )

Sets sound output mute state. Parameters: shouldMute  If true, sound output will be muted. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Mute (  [out, retval] VARIANT_BOOL *  isMuted  )

Returns true if the sound output is muted. Parameters: isMuted  True is sound output is muted. Return values: S_OK  The operation was successful. E_POINTER  isMuted is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::NextTrack (   )

Advance to the next track in the current playlist. Note: As of iTunes 4.7 and later (iTunes type library 1.2 and later), iTunes will suppress the authorization dialog if this method attempts to start playing a purchased track that has not been authorized for playback on the current machine. The unauthorized track is skipped in this case. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::OpenURL (  [in] BSTR  url  )

Open the specified iTunes Store or streaming audio URL. If the specified URL is an iTunes Store URL, the window containing the store will be brought to the foreground. If the iTunes Store is already open in a separate window, the home page will be displayed there. Otherwise, it will be displayed in the main browser window. Parameters: url  The URL to open. The length of the URL cannot exceed 512 characters. iTunes Store URLs start with itms:// or itmss://. Streaming audio URLs start with http://. Return values: S_OK  The operation was successful. E_POINTER  url is NULL. E_INVALIDARG  url has an invalid length. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Pause (   )

Pause playback. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Play (   )

Play the currently targeted track. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::PlayerButtonClicked (  [in] ITPlayerButton  playerButton, [in] long  playerButtonModifierKeys )

Simulate a click on a player control button in the window containing the currently targeted track. If there is no currently targeted track, simulates a click on a player control button in the main browser window. You can specify modifier keys to get the special behaviors built into iTunes (e.g. shift-control-next button to go to the next chapter in an audio book). Note: This method is available in iTunes 4.7 and later (iTunes type library 1.2 and later). Parameters: playerButton  The player button to click playerButtonModifierKeys  A combination of one or more flags in ITPlayerButtonModifierKey. Specify ITPlayerButtonModifierKeyNone for no modifiers. Return values: S_OK  The operation was successful. E_INVALIDARG  playerButton is invalid. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::PlayerPosition (  [in] long  playerPos  )

Sets the player's position within the currently playing track in seconds. If playerPos specifies a position before the beginning of the track, the position will be set to the beginning. If playerPos specifies a position after the end of the track, the position will be set to the end. Parameters: playerPos  The player's position within the currently playing track in seconds. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred, e.g. no track is being played.

HRESULT IiTunes::PlayerPosition (  [out, retval] long *  playerPos  )

Returns the player's position within the currently playing track in seconds. Parameters: playerPos  The player's position within the currently playing track in seconds. Return values: S_OK  The operation was successful. E_POINTER  playerPos is NULL. E_FAIL  An unexpected error occurred, e.g. no track is being played.

HRESULT IiTunes::PlayerState (  [out, retval] ITPlayerState *  playerState  )

Returns the current player state. Parameters: playerState  The current player state. Return values: S_OK  The operation was successful. E_POINTER  playerState is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::PlayFile (  [in] BSTR  filePath  )

Play the specified file path, adding it to the library if not already present. Parameters: filePath  Full path to the file to be played. Return values: S_OK  The operation was successful. E_POINTER  filePath is NULL. E_INVALIDARG  filePath is invalid. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::PlayPause (   )

Toggle the playing/paused state of the current track. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::PreviousTrack (   )

Return to the previous track in the current playlist. Note: As of iTunes 4.7 and later (iTunes type library 1.2 and later), iTunes will suppress the authorization dialog if this method attempts to start playing a purchased track that has not been authorized for playback on the current machine. The unauthorized track is skipped in this case. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Quit (   )

Exits the iTunes application. Return values: S_OK  The operation was successful. ITUNES_E_USERCANCEL  The operation was canceled by the user. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Resume (   )

Disable fast forward/rewind and resume playback, if playing. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Rewind (   )

Skip backwards in a playing track. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::SelectedTracks (  [out, retval] IITTrackCollection **  iTrackCollection  )

Returns a collection containing the currently selected track or tracks. The frontmost visible window in iTunes must be a browser or playlist window. If there is no frontmost visible window (e.g. iTunes is minimized to the system tray), the main browser window is used. Parameters: iTrackCollection  Collection of IITTrack objects. Will be set to NULL if there is no current selection. Return values: S_OK  The operation was successful. S_FALSE  There is no current selection. E_POINTER  iTrackCollection is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::SoundVolume (  [in] long  volume  )

Sets the sound output volume (0 = minimum, 100 = maximum). Note that volume will be pinned to the range 0 through 100. Parameters: volume  New sound output volume Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::SoundVolume (  [out, retval] long *  volume  )

Returns the sound output volume (0 = minimum, 100 = maximum). Parameters: volume  Current sound output volume Return values: S_OK  The operation was successful. E_POINTER  volume is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::SoundVolumeControlEnabled (  [out, retval] VARIANT_BOOL *  isEnabled  )

Returns true if the sound volume control is enabled. Note: This property is available in iTunes 6.0.2 and later (iTunes type library 1.7 and later). Parameters: isEnabled  True if the sound volume control is enabled. Return values: S_OK  The operation was successful. E_POINTER  isEnabled is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Sources (  [out, retval] IITSourceCollection **  iSourceCollection  )

Returns a collection of music sources (music library, CD, device, etc.). Parameters: iSourceCollection  Collection of IITSource objects. Return values: S_OK  The operation was successful. E_POINTER  iSourceCollection is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Stop (   )

Stop playback. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::SubscribeToPodcast (  [in] BSTR  url  )

Subscribes to the specified podcast feed URL. Any "unsafe" characters in the URL should already be converted into their corresponding escape sequences, iTunes will not do this. Note: This method is available in iTunes 4.9 and later (iTunes type library 1.4 and later). Parameters: url  The URL to subscribe to. Return values: S_OK  The operation was successful. E_POINTER  url is NULL. E_INVALIDARG  url has an invalid length. ITUNES_E_PODCASTSDISABLED  Access to podcasts is disabled in the preferences. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::UpdateIPod (   )

Update the contents of the iPod. Return values: S_OK  The operation was successful. S_FALSE  No iPod source was found. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::UpdatePodcastFeeds (   )

Updates all podcast feeds. This is equivalent to the user pressing the Update button when Podcasts is selected in the Source list. Note: This method is available in iTunes 5.0 and later (iTunes type library 1.5 and later). Return values: S_OK  The operation was successful. ITUNES_E_PODCASTSDISABLED  Access to podcasts is disabled in the preferences. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Version (  [out, retval] BSTR *  version  )

Returns the version of the iTunes application. Parameters: version  Returns the version of the iTunes application Return values: S_OK  The operation was successful. E_POINTER  version is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Visuals (  [out, retval] IITVisualCollection **  iVisualCollection  )

Returns a collection of visual plug-ins. Parameters: iVisualCollection  Collection of IITVisual objects. Return values: S_OK  The operation was successful. E_POINTER  iVisualCollection is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::VisualsEnabled (  [in] VARIANT_BOOL  shouldEnable  )

Set whether visuals should be displayed. Parameters: shouldEnable  True if visuals should be displayed. Return values: S_OK  The operation was successful. E_ACCESSDENIED  Visuals cannot be enabled or disabled. For example, this can happen if the iTunes Store is currently being viewed. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::VisualsEnabled (  [out, retval] VARIANT_BOOL *  isEnabled  )

Returns true if visuals are currently being displayed. Parameters: isEnabled  True if visuals are currently being displayed. Return values: S_OK  The operation was successful. E_POINTER  isEnabled is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::VisualSize (  [in] ITVisualSize  visualSize  )

Sets the size of the displayed visual. Parameters: visualSize  The new size of the visuals. Return values: S_OK  The operation was successful. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::VisualSize (  [out, retval] ITVisualSize *  visualSize  )

Returns the size of the displayed visual. Parameters: visualSize  The current size of the visuals. Return values: S_OK  The operation was successful. E_POINTER  visualSize is NULL. E_FAIL  An unexpected error occurred.

HRESULT IiTunes::Windows (  [out, retval] IITWindowCollection **  iWindowCollection  )

Returns a collection of visual plug-ins. Parameters: iWindowCollection  Collection of IITWindow objects. Return values: S_OK  The operation was successful. E_POINTER  iWindowCollection is NULL. E_FAIL  An unexpected error occurred.

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