IWMSClassObject.AllocIWMSContext (C#)

IWMSClassObject.AllocIWMSContext (C#)

The AllocIWMSContext method allocates an IWMSContext object.

Syntax

Parameters

riid

Reference to a Guid specifying the data structure IID. This must be equal to IID_IWMSContext.

ContextType

WMS_CONTEXT_TYPE enumeration value specifying the context type that is allowed.

pRelatedContext

object containing a context object. This object can be null.

ppunk

Reference to an IntPtr containing a newly created IWMSContext object.

Return Values

This method does not return a value.

If this method fails, it throws an exception.

Remarks

The pRelatedContext parameter contains an IWMSContext object. For performance reasons, the server might share critical sections between contexts.

Example Code

Guid ContextGuid = typeof(IWMSContext).GUID;
IWMSContext         Context;
IntPtr              pUnknown;
            
try
{
    m_ClassFactory.AllocIWMSContext(ref ContextGuid,
                                   WMS_CONTEXT_TYPE.WMS_USER_CONTEXT_TYPE,
                                   pUserContext, out pUnknown);
    Context = (IWMSContext)Marshal.GetTypedObjectForIUnknown(pUnknown,
                                                     typeof(IWMSContext));
}
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

• IWMSClassObject Object (C#)