[Octave-bug-tracker] [bug #54078] No more dock button on undocked panes

[Dan Sebald]

Follow-up Comment #1, bug #54078 (project octave):

Strange.  I'm not seeing any issues in linux.  Although there has been
activity around the V.E. and floated/unfloated windows, it's more to do with
the actions, shortcuts and working-around Qt bugs.  There hasn't been much to
do with the octave_dock_widget layout for quite a while.  Can you guess about
when this started happening?  There is one changeset that may have
inadvertently affected this:

http://hg.savannah.gnu.org/hgweb/octave/rev/9b67c2294129

Maybe the "set_style(true)" has something to do with it, but that's just a
guess.  We should really do a bisect.

BTW, the screenshot you posted suggests it is the octave_dock_widget that is
missing the title bar.  Recall, that is now back to the default title bar.  Qt
documentation indicates there is no way of removing the title bar, but the
effect can be achieved by using a custom title bar that is an empty widget.

octave_dock_widgets cannot be dragged back into the GUI as a means of
redocking.  Recall that the process of floating an octave_dock_widget does
some steps to make the window a *top level* window.  It's no longer a
QDockWidget in the conventional sense.  So it is not just Windows in which one
can't redock an octave_dock_widget by dragging.

How about the variable_dock_widgets?  Are you seeing a title bar in that case?
 The variable_dock_widgets are the floatable subpanels (the individual
variables) of the V.E.  The variable_dock_widget uses the custom title bar and
remains as a QDockWidget (i.e., no full decorations), so those should be
dockable.

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