Windows Media Player 11 SDK IWMPMediaCollection::getAll
The getAll method retrieves a pointer to an IWMPPlaylist interface. This interface corresponds to the playlist that contains all media items in the library.
HRESULT getAll( IWMPPlaylist** ppMediaItems );
[out] Pointer to a pointer to an IWMPPlaylist interface for the playlist that contains all of the requested media items.
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
|S_OK||The method succeeded.|
Before calling this method, you must have read access to the library. For more information, see Library Access.
There are two ways you ways you can retrieve an IWMPMediaCollection interface, and the behavior of the getAll method depends on which of those two ways you use. If you retrieve the interface by calling IWMPCore::get_mediaCollection, then the getAll method returns all the media items in the library.If you retrieve the interface by calling IWMPLibrary::get_mediaCollection, then the getAll method returns only the audio items in the library.
Version: Windows Media Player 9 Series or later.
Header: Include wmp.h.
Library: Use wmp.dll.