[Development] QX11EmbedWidget in Qt5

[Alberto Mardegan]

Hi all!
  At some point I might need to use XEmbed, so I'm interested in helping
out the implementation of QX11EmbedWidget in Qt5, as time permits.
Now I'm just studying the code to evaluate how much of an effort it
would be.

I've seen the merge request about QX11Info, which is somehow related:
https://codereview.qt-project.org/#change,26714
Unfortunately it didn't progress, so it's a bit unclear to me how the
feature should be integrated.

Should the API be exposed by a separate library which is linked to the
client code only if "QT += x11support" is specified? Or should it be
part of the QtWidgets module?

I don't know much about Windows and OS X: is there some functionality
there to embed windows belonging to other processes? If so, then maybe
we could have a QEmbed{Widget,Container} in QtWidgets?

Ciao,
  Alberto

-- 
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