IWMSDataSourcePluginCallback.OnOpenDirectory (Visual Basic .NET)

The OnOpenDirectory method is called by a data source plug-in to respond when the server calls IWMSDataSourcePlugin.OpenDirectory.

IWMSDataSourcePluginCallback.OnOpenDirectory(  hr As Int32,
  pDirectory As IWMSDirectory,
  qwContext As UInt64
)

Arguments

Int32 containing the result of the call to IWMSDataSourcePlugin.OpenDirectory.

IWMSDirectoryIWMSDirectory Object (Visual Basic .NET) that contains information about the subdirectories and media files in the directory.

UInt64 containing a value defined by the server to identify which IWMSDataSourcePlugin.OpenDirectory request the plug-in is responding to when it calls OnOpenDirectory. The plug-in must pass this value back unaltered.

Return Value

This method does not return a value. If the plug-in uses the IWMSEventLogIWMSEventLog Object (Visual Basic .NET) to log error information, it is recommended that it send NS_E_PLUGIN_ERROR_REPORTED (0xC00D157D) to the server in the lHr parameter. 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 object to log custom error information to the Windows Event Viewer, sending NS_E_PLUGIN_ERROR_REPORTED stops the server from also logging to the event viewer. For more information about plug-in error information, see Identifying Plug-in Errors.

Requirements

Reference: Add a reference to Microsoft.WindowsMediaServices.

Namespace: Microsoft.WindowsMediaServices.Interop.

Assembly: Microsoft.WindowsMediaServices.dll.

Library: WMSServerTypeLib.dll.

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

See Also

Concepts

IWMSDataSourcePluginCallback Object (Visual Basic .NET)