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[Octave-bug-tracker] [bug #53409] Variable Editor QDockWidget panels not


From: Dan Sebald
Subject: [Octave-bug-tracker] [bug #53409] Variable Editor QDockWidget panels not movable in KDE / Plasma Qt 4.4.8.7
Date: Thu, 22 Mar 2018 20:02:11 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0

Follow-up Comment #9, bug #53409 (project octave):

I wonder if this is bad luck.  The following Qt bug report

https://bugreports.qt.io/browse/QTBUG-55357

indicates exactly what I'm seeing (4.4.8) and what you are seeing.  It
indicates that the bug is in Qt 5.6.1 and 5.7.0, but then has been fixed since
5.7.1.

I've been experimenting here, trying to get around this and I can't figure
anything out.  If I choose


    page->setFeatures (QDockWidget::NoDockWidgetFeatures);


there is a change in behavior in the sense that no longer can I drag the
QDockWidget around.  They are static and immutable.  So Qt is reacting to the
settings in a sane way, but just not letting that final drop take place.

I'm guessing this bug might have crept in because of multi-screen support.

Anyway, we might have to find someone with KDE and Qt 5.5.x series or 5.7.1
series.  This Mint KDE/Plasma version has Qt 5, but it too is 5.6.1.

I suspect the best solution is still to use QMainWindow::AnimatedDocks, as in
the patch I attached previously since it seems to fix the old 4.4.x series in
a reasonable way.

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  <http://savannah.gnu.org/bugs/?53409>

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