How can I disable CSD (client side decorations)?

[Klaus Zeitler]

Hello,
seems that Xfce 4.12, that comes with openSUSE 42.1, has now enabled CSD.
Some applications, e.g. eog, evince, gedit etc. pop up without the
usual frames and header bar. I guess this is due to GTK 3 CSD.
I would have thought, that there should be a (fairly) simple way
to turn CSD off, but I couldn't find anything (neither in GTK docu nor
for Xfce). I hope I just missed it. The only thing I found (but haven't
tried yet) is gtk3-nocsd. This looks like quite desperate measures.
Is there a way to turn CSD feature off in Xfce or in GTK config?

Klaus

-- 
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|  Klaus Zeitler                |
|  Email: info at klauszeitler.de  |
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