"Consider running gedit on your quad core desktop
machine but you feel like going outside and hacking for a few
hours. What you'd really like to do is tell gedit to move its
entire user interface to your laptop, without having to close gedit
on your desktop machine and open a new copy on your laptop --
possibly loosing temporary state information like the buffers you
have open etc.
"The good news is that all the heavy lifting for this has been
done for you and is already exposed in the GTK+2 API. The bad news
is that many GTK+2 applications do not expose this functionality to
the end user. But being open source software, the bad news can be
"I created a little GTK+ application to demonstrate moving a
user interface and show how simple the code is. To keep the code
short, the test application does not create the most pretty user
interface but it can move to displays on other machines while
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