IWMSDataContainer::GetDataSourcePlugin

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IWMSDataContainer::GetDataSourcePlugin

The server calls the GetDataSourcePlugin method to retrieve a pointer to the data source plug-in.

Syntax

  HRESULT GetDataSourcePlugin(
  IWMSDataSourcePlugin**  ppDataSource
);

Parameters

ppDataSource

[out] Pointer to a pointer to a data source object.

Return Values

If the method succeeds, the plug-in must return S_OK. To report an error, the plug-in can return any HRESULT other than S_OK. If the plug-in uses the IWMSEventLog interface to log error information directly to the Windows Event Viewer, it is recommended that it return NS_E_PLUGIN_ERROR_REPORTED. Typically, the server attempts to make plug-in error information available to the server object model, the Windows Event Viewer, and the troubleshooting list in the details pane of the Windows Media Services MMC. However, if the plug-in uses the IWMSEventLog interface to send custom error information to the Windows Event Viewer, returning NS_E_PLUGIN_ERROR_REPORTED stops the server from also logging to the event viewer. For more information about retrieving plug-in error information, see Identifying Plug-in Errors.

Example Code

CDataContainer::GetDataSourcePlugin( 
                        IWMSDataSourcePlugin **ppDataSource )
{
    HRESULT hr = S_OK;

    // Retrieve a pointer to the plug-in and increase the 
    // reference count.
    *ppDataSource = m_pStorageSystem;
    m_pOwnerStorageSystem->AddRef();

    return( hr );
}

Requirements

Header: datacontainer.h.

Library: WMSServerTypeLib.dll.

Platform: Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition; Windows Server 2008.

See Also

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