Hi, On Thu, Feb 8, 2018 at 1:34 PM, Michael Thayer <michael.tha...@oracle.com> wrote:
> We created a test case application for Olivier and he decided it is a > different case after all. xprop says that the black window is > WM_NAME-ed "mutter guard window". > Yeah, FWIW, in the Qt example provided in bug 767212, if I remove the “Qt::FrameLessWindowHint” from the window widget creation, it works. I can even resize the window move it around, it's perfectly transparent and I don't see any black border artefacts as in bug 767212. So I wonder if “Qt::FrameLessWindowHint” translates as an override redirect window on X11, which might be a bit of a grey area, as O-R are mostly ignored by the WM on X11. I don't know enough of Qt to tell. Cheers, Olivier
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