Dockarea within own widget

[Perdrix]

I want to be able to "tear off" part of a widget which is currently a grid layout containing a label, tabbed widget and a tableview.

I imagine that I could place all of those inside a dock widget, but how do I create an area within my widget that can contain that dock widget? There doesn't seem to be anything I can find that will accept dock widgets being dropped on them ...

[JonB]

@Perdrix said in Dockarea within own widget:

but how do I create an area within my widget that can contain that dock widget?

QDockWidget Class

The QDockWidget class provides a widget that can be docked inside a QMainWindow or floated as a top-level window on the desktop.

?

[SGaist]

Hi,

Dock area is only available in QMainWindow.

Are you using one or do you want your widget to act like one ?

If the later, there are projects providing docking like KDAB's KDDockWidgets.

[Perdrix]

Yes I'm using a QMainWindow, but I don't want this to be docked in any of its dock areas in the initial case, but in a dock area within my own widget.

David

[mrjj]

@Perdrix
Hi
you can add a QMainWindow to your widget and use that for docking.
Despite its name, you can use as many MainWindows as you like and
it will act like a standard widget, just with ability to dock.

[Perdrix]

Nice trick!!! Thank you

[Perdrix]

How to persuade Qt Designer to insert a QMainWindow into my widget? I tried adding a QWidget and tried to promote it to a QMainWindow and Designer complained:

Thanks
D.

[mrjj]

@Perdrix

Hi
You must have a child of a QMainWindow class to point it to.

So for a std. Qt project you can point it to
MainWindow. (it inherits QMainWindow)

[Perdrix]

Does that mainwindow.h have to be created by me ... It's odd that Qt Designer recognised MainWindow immediately as something it understood!

[mrjj]

@Perdrix

Well yes, if you mean it must exists, as it is added to the generated ui_ file as a normal include so if its "fake" then later it will complain about it.

I was also kinda surprised it said that for QMainWindow.

[Perdrix]

I managed to get that concept working but creating a main window form wouldn't let me specify the class name for the main window or the header file, so I manually edited the ui file to add:

 <customwidgets>
  <customwidget>
   <class>DSS::BayWindow</class>
   <extends>QMainWindow</extends>
   <header>baywindow.h</header>
   <container>1</container>
  </customwidget>
</customwidgets>

and changed the start to look like this:

 <class>StackingDlg</class>
 <widget class="DSS::BayWindow" name="StackingDlg">

Which has got me started! I have however hit a small problem that I'm sure is obvious to you mavens! I've so far failed to get the contents of the central widget to expand to fill it :(

What have I missed - the picture control (lower horizontal layout) is set to Expanding, Expanding so I though that would force the issue, but it doesn't seem to have done it.

I'm having the identical problem with the DockWidget: