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IWMSDataContainerCallback.OnGetInfo (Visual Basic .NET)

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IWMSDataContainerCallback.OnGetInfo (Visual Basic .NET)

A data source plug-in calls the OnGetInfo method to return the results when the server calls IWMSDataContainer.GetInfo.

Syntax

Parameters

hr

Int32 identifying the result of an IWMSDataContrainer.GetInfo call.

dwFlags

UInt32 containing a member of the WMS_DATA_CONTAINER_GETINFO_FLAGS enumeration type. This must be the following value.

Value Description
WMS_SEEKABLE_CONTAINER The data container supports seeking.

qwInfoValue

UInt64 containing the specific information requested by the IWMSDataContainer.GetInfo method call. Currently, the server can only request the size, in bytes, of the data container by specifying WMS_DATA_CONTAINER_SIZE.

qwContext

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

Return Values

This method does not return a value. If the plug-in uses the IWMSEventLog object 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

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