Perl/Tk saves your favourite tools
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atsar.
This requires a few different things, which I will discuss
on different slides, but are mixed within the real program.
The slides show the general idea, although implementation a bit different.
You can not just wait for a line to arrive via the pipe we opened to
the command, because that would block the graphical interface. That is
why we have to use the fileevent function of Tk, which
triggers a callback each time a change in the file-handle emerges.
The output of atsar is in visual columns, which I just
bluntly split into the data to be presented in our interface. See
next slide.
| Atsar connection | Atsar encap -2 |
Created by Mark Overmeer with PPresenter on 11 juli 2001.