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Asked: 2026-05-14T16:52:03+00:00

Question: I have a dll that I can load in another program. Now the

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Question: I have a dll that I can load in another program.
Now the dll has access to all data/functions in the other program.

Which technology can I use that now an external program can send data/commands to that dll, to steer the other program, or get data from it ?

I mean, in the past that meant DDE, I think that was back in Windows 3.11/95 times.
What can I use today? Which one is easiest ? Which one is fastest?

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  1. Editorial Team

    Some common ones are:

    • Named Pipes. Fairly easy to implement.
    • Shared Memory. A little more work but may be a little bit faster (at least in my testing).
    • Sockets. This is fairly simple and very portable but not as high performance. But it is sure nice if you suddenly want to be able to communicate with a process running on a different machine.
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