IWMPEvents::MediaCollectionAttributeStringChanged method (wmp.h)

Article
4/26/2023

[The feature associated with this page, Windows Media Player SDK, is a legacy feature. It has been superseded by MediaPlayer. MediaPlayer has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer instead of Windows Media Player SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The MediaCollectionAttributeStringChanged event occurs when an attribute value in the library is changed.

Syntax

void MediaCollectionAttributeStringChanged(
  [in] BSTR bstrAttribName,
  [in] BSTR bstrOldAttribVal,
  [in] BSTR bstrNewAttribVal
);

Parameters

[in] bstrAttribName

Specifies the name of the attribute. For information about the attributes supported by Windows Media Player, see the Windows Media Player Attribute Reference.

[in] bstrOldAttribVal

Specifies the original attribute value.

[in] bstrNewAttribVal

Specifies the new attribute value.

Return value

None

Remarks

When a user modifies library metadata, the MediaCollection object is updated and this event fires for each attribute changed.

Windows Media Player 10 Mobile: This event is not supported.

Requirements

Requirement	Value
Minimum supported client	Windows Media Player 9 Series or later.
Target Platform	Windows
Header	wmp.h
DLL	Wmp.dll

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