Sorry, I think you still don't get it. Client-side decoration will be in 99% provided by UI toolkit, be it GTK+ or Qt. Not by application itself (although it will be possible, just as it is possible now).
Posted Aug 21, 2012 11:20 UTC (Tue) by cortana (subscriber, #24596)
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I'm *really* not looking forward to a world where all the GTK+ 3 programs have different decorations to the GTK+ 2 programs and the QT 4 and QT3 programs. Not to mention the programs that run in Wine, and those that use FLTK, etc.