You may need to call setVisible(true). IIRC, changing window flags makes the
widget invisible.
-John Weeks
> On Oct 11, 2017, at 2:36 PM, René J.V. Bertin <rjvber...@gmail.com> wrote:
>
> Hi,
>
> Dock widgets are very useful, but there are cases where I'd like to be able
> to detach them to a regular window, because
>
> - regular windows stay visible when the application focus changes
> - regular windows can do stacking
> - regular windows can be put (partly) off the screen
>
> The latter 2 are practical when using a smaller screen size, all three are
> useful for, say, a documentation browser.
>
> How can one achieve this? I see that QDockWidget::setFloating(true)
> ultimately just sets the Qt::Tool window flag, so I tried unsetting that. At
> the moment, I have
>
> connect(this, &QDockWidget::topLevelChanged, this, [this] (bool floating) {
> if (floating) {
> setTitleBarWidget(0);
> setWindowFlags(Qt::Window);
> updateGeometry();
> activateWindow();
> raise();
> }
> } );
>
> which probably has a number of redundant calls, doesn't handle the case when
> a QDockWidget is created in "floating" mode and also isn't reliable.
>
> Most of the time, the window simply disappears when the above lambda is
> triggered. In addition, under X11 the window will have the regular titlebar
> provided by the WM but looks as if there's a regular window with the floating
> dock window inside, tiny titlebar included.
>
> What am I missing here?
>
> Thanks,
> René
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