It sounds like there's nothing C++ specific in your question. Starting an external command, reading its output and stopping it are tasks that can be done with any executable.

You can open a pipe (see also perlopentut), or rely on some more high-level interfaces like IPC::Run or (not quite as high-level iirc) IPC::Open3.

In reply to Re: Perl/Tk C++ Interaction by moritz
in thread Perl/Tk C++ Interaction by dmarg

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