IWMSClassObject.CreateInstance (C#)

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

void IWMSClassObject.CreateInstance(
  ref Guid riid,
  out IntPtr ppunk
);

Arguments

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

Value	Description
IID_IWMSContentDescriptionList	GUID identifying an IWMSContentDescriptionListIWMSContentDescriptionList Object (C#).
IID_IWMSDataContainerVersion	GUID identifying an IWMSDataContainerVersionIWMSDataContainerVersion Object (C#).
IID_IWMSPacket	GUID identifying an IWMSPacketIWMSPacket Object (C#).
IID_IWMSPacketList	GUID identifying an IWMSPacketListIWMSPacketList Object (C#).
IID_IWMSStreamHeader	GUID identifying an IWMSStreamHeaderIWMSStreamHeader Object (C#).
IID_IWMSStreamHeaderList	GUID identifying an IWMSStreamHeaderListIWMSStreamHeaderList Object (C#).

Reference to an IntPtr containing a newly created object.

Return Value

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

Guid ContentDescListGuid = typeof(IWMSContentDescriptionList).GUID;
IWMSContentDescriptionList  ContentDescList;
IntPtr                      pUnknown;
            
try
{
    m_ClassFactory.CreateInstance(ref ContentDescListGuid, out pUnknown);
    ContentDescList =
            (IWMSContentDescriptionList)Marshal.GetTypedObjectForIUnknown(
                            pUnknown, typeof(IWMSContentDescriptionList));
}
catch( Exception e )
{
    // TODO: Handle exceptions.
}

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

Concepts

IWMSClassObject Object (C#)