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IWMSDirectory::GetDataSourcePlugin
The GetDataSourcePlugin method retrieves a pointer to the plug-in used to source content from the directory.
Syntax
HRESULT GetDataSourcePlugin( IWMSDataSourcePlugin** ppDataSource );
Parameters
ppDataSource
[out] Pointer to a pointer to a file system data source plug-in.
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.
Remarks
The data source plug-in must source from a file system that supports enumeration.
Example Code
The following example retrieves a pointer to the data source plug-in from a private data member in the user-defined class that implements the IWMSDirectory interface. You can specify this data member when you initialize the class after the server calls IWMSDataSourcePlugin::OpenDirectory. You can also implement the GetDataSourcePlugin method in some other manner.
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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