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Windows Media Player 11 SDK IWMPMedia3::getItemInfoByType 

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IWMPMedia3::getItemInfoByType

The getItemInfoByType method retrieves the value of the attribute corresponding to the specified attribute type and index.

Syntax

Parameters

bstrType

[in]  BSTR containing the type.

bstrLanguage

[in]  BSTR containing the language. If the value is set to null or "" (empty string), the current locale string is used. Otherwise, the value must be a valid RFC 1766 language string such as "en-us".

lIndex

[in]  long containing the index.

pvarValue

[out]  Pointer to a VARIANT that contains the returned value.

Return Values

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code Description
S_OK The method succeeded.

Remarks

This method retrieves the metadata for an individual digital media item or a media item that is part of a playlist.

This method supports attributes with multiple values and attributes with complex values. The getItemInfo method does not support attributes with multiple values and attributes with complex values.

The attributeCount method retrieves the number of attribute names available for a given media item. Index numbers can then be used with the getAttributeName method to determine the name of each available attribute. Individual attribute names can be passed to the name parameter of getItemInfoByType.

The getAttributeCountByType method returns the number of attributes that correspond to a particular attribute name for a given media item. Index numbers can then be passed to the index parameter of getItemInfoByType. This is useful when a media item has been categorized under multiple genres, for example.

The set of attributes available from sources other than the local library (remote libraries, portable devices, or CDs is defined by the other sources.

Before calling this method, you must have read access to the library. For more information, see Library Access.

Windows Media Player 10 Mobile: This method always returns E_INVALIDARG.

Requirements

Version: Windows Media Player 9 Series or later.

Header: Include wmp.h.

Library: Use wmp.dll.

See Also

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