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?