IWMSClassObject.CreateInstance (Visual Basic .NET)

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IWMSClassObject.CreateInstance (Visual Basic .NET)

The CreateInstance method is a generic method for creating objects for the server.

Syntax

Parameters

riid

Reference to a Guid specifying the requested object. This must be one of the following values.

Value	Description
IID_IWMSContentDescriptionList	GUID identifying an IWMSContentDescriptionList object.
IID_IWMSDataContainerVersion	GUID identifying an IWMSDataContainerVersion object.
IID_IWMSPacket	GUID identifying an IWMSPacket object.
IID_IWMSPacketList	GUID identifying an IWMSPacketList object.
IID_IWMSStreamHeader	GUID identifying an IWMSStreamHeader object.
IID_IWMSStreamHeaderList	GUID identifying an IWMSStreamHeaderList object.

ppunk

Reference to an IntPtr containing a newly created object.

Return Values

This method does not return a value.

If this method fails, it throws an exception.

Number	Description
0x80070057	ppunk is null or riid is not equal to one of the expected values.
0x8007000E	There is insufficient memory to complete the function.

Example Code

Dim ContentDescList As IWMSContentDescriptionList
Dim pUnknown As IntPtr

Try
    m_ClassFactory.CreateInstance( _
                               GetType(IWMSContentDescriptionList).GUID, _
                               pUnknown)
    ContentDescList = Marshal.GetTypedObjectForIUnknown(pUnknown, _
                                      GetType(IWMSContentDescriptionList))

Catch e As Exception
    ' TODO: Handle exceptions.
End Try

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; Windows Server 2008.

See Also

• IWMSClassObject Object (Visual Basic .NET)

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