>>>Performance ?
>>>
>>>Thanks
>>>eric
>>
>>Two names for the same thing. COM is the name MS is currently pushing. DDE was an early version of it too.
>
>DDE was not an early version of COM. It used (and uses) a completely different set of mechanisms for communication.

Just to clarify a bit...MS took the knowledge they gained from DDE and applied to OLE/COM. What they found was that it didn't work too well and designed a better way.