<     > 

Accessing the OutputPort.Value property

Since the Value property returns a variant value, use CComVariant to declare the pointer l_varOutPrimitive and then set the pointer to member operators to match the name of the property from the XSI object model:

   // Where I've already defined in_pOutputPort as an entry point
   CComVariant l_varOutPrimitive;
   l_hr = ( in_pOutputPort->get_Value( &l_varOutPrimitive ));
   CComQIPtr< Primitive > l_pOutPrimitive( V_DISPATCH( &l_varOutPrimitive ));

This is the equivalent to the following VBScript snippet:

   ' Where I've already defined oOutPort
   Set vOutPrim = oOutPort.Value

 <     >