IWMPMedia::isMemberOf method (wmp.h)

项目
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 It has been superseded by MediaPlayer.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 isMemberOf method retrieves a value indicating whether the specified media item is a member of the specified playlist.

Syntax

HRESULT isMemberOf(
  [in]  IWMPPlaylist *pPlaylist,
  [out] VARIANT_BOOL *pvarfIsMemberOf
);

Parameters

[in] pPlaylist

Pointer to an IWMPPlaylist interface.

[out] pvarfIsMemberOf

Pointer to a VARIANT_BOOL that indicates whether the item is a member of the playlist.

Return value

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 cannot check playlists retrieved through the MediaCollection object. To test whether a media item is a member of a particular named playlist, retrieve the playlist collection with the IWMPCore::get_playlistCollection method. Once you retrieve the collection, retrieve the individual playlist by calling the IWMPPlaylistCollection::getByName method.

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

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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