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  4. How do I hide the window title bar from QDockWidget

How do I hide the window title bar from QDockWidget

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  • L lansing
    5 Jul 2020, 19:23

    @mrjj

    My program crashed on run

    QWidget * titleBar = m_ui->myrDockWidget->titleBarWidget();
    titleBar->setFixedHeight(1);
    
    M Offline
    M Offline
    mrjj
    Lifetime Qt Champion
    wrote on 5 Jul 2020, 19:29 last edited by mrjj 7 May 2020, 19:30
    #24

    @lansing
    ah sorry my bad
    Docs says
    "Returns the custom title bar widget set on the QDockWidget, or nullptr if no custom title bar has been set."

    but we didnt anymore so its null. ok so not an option unless we do
    m_ui->myDockWidget->setTitleBarWidget(new QWidget(m_ui->myDockWidget));

    But you are right. Its too hard to hit if smaller so guess we just have to leave it.

    I just wonder where that space comes from as the examples don't have it.

    alt text

    B 1 Reply Last reply 5 Jul 2020, 19:33
    0
    • M mrjj
      5 Jul 2020, 19:29

      @lansing
      ah sorry my bad
      Docs says
      "Returns the custom title bar widget set on the QDockWidget, or nullptr if no custom title bar has been set."

      but we didnt anymore so its null. ok so not an option unless we do
      m_ui->myDockWidget->setTitleBarWidget(new QWidget(m_ui->myDockWidget));

      But you are right. Its too hard to hit if smaller so guess we just have to leave it.

      I just wonder where that space comes from as the examples don't have it.

      alt text

      B Offline
      B Offline
      Bonnie
      wrote on 5 Jul 2020, 19:33 last edited by Bonnie 7 May 2020, 19:33
      #25

      @mrjj said in How do I hide the window title bar from QTabWidget:

      I just wonder where that space comes from as the examples don't have it.

      That must be the layout default margins...The OP mentioned using a vertical layout...

      M 1 Reply Last reply 5 Jul 2020, 19:33
      1
      • B Bonnie
        5 Jul 2020, 19:33

        @mrjj said in How do I hide the window title bar from QTabWidget:

        I just wonder where that space comes from as the examples don't have it.

        That must be the layout default margins...The OP mentioned using a vertical layout...

        M Offline
        M Offline
        mrjj
        Lifetime Qt Champion
        wrote on 5 Jul 2020, 19:33 last edited by mrjj 7 May 2020, 19:35
        #26

        @Bonnie
        Also my thought but we did try
        setContentsMargins(0,0,0,0);
        higher up.

        So maybe that space is really just the hidden titlebar, it just look bigger to me than the samples.

        B L 2 Replies Last reply 5 Jul 2020, 19:37
        0
        • M mrjj
          5 Jul 2020, 19:33

          @Bonnie
          Also my thought but we did try
          setContentsMargins(0,0,0,0);
          higher up.

          So maybe that space is really just the hidden titlebar, it just look bigger to me than the samples.

          B Offline
          B Offline
          Bonnie
          wrote on 5 Jul 2020, 19:37 last edited by Bonnie 7 May 2020, 19:43
          #27

          @mrjj said in How do I hide the window title bar from QTabWidget:

          setContentsMargins(0,0,0,0);

          I would guess that the OP call that on the widget, not the layout...
          Ah...maybe not...
          I'm not sure what's the current situation now. I thought the gap in the later picture would be that titlebar?

          1 Reply Last reply
          0
          • M mrjj
            5 Jul 2020, 19:33

            @Bonnie
            Also my thought but we did try
            setContentsMargins(0,0,0,0);
            higher up.

            So maybe that space is really just the hidden titlebar, it just look bigger to me than the samples.

            L Offline
            L Offline
            lansing
            wrote on 5 Jul 2020, 19:41 last edited by
            #28

            @mrjj

            Yes it's the title bar

            alt text

            M 1 Reply Last reply 5 Jul 2020, 19:44
            0
            • L lansing
              5 Jul 2020, 19:41

              @mrjj

              Yes it's the title bar

              alt text

              M Offline
              M Offline
              mrjj
              Lifetime Qt Champion
              wrote on 5 Jul 2020, 19:44 last edited by
              #29

              @lansing
              Ok so thats as far as we can come as you cannot move tabWidget more up. :)

              1 Reply Last reply
              0
              • M mrjj
                5 Jul 2020, 14:39

                Hi
                What title bar ??

                alt text

                If you mean when you use it as a window so its shown with the normal border and title then you can do

                setWindowFlags(Qt::Window | Qt::FramelessWindowHint);

                Y Offline
                Y Offline
                Yunus
                wrote on 15 Dec 2022, 07:58 last edited by
                #30

                @mrjj is there any way to use Qt::FramelessWindowHint and giving resizeability to the widget at the same time. Because whenweused the Qt::FramelessWindowHint, widget is not able to be resizeable anymore ?

                M 1 Reply Last reply 15 Dec 2022, 12:53
                0
                • Y Yunus
                  15 Dec 2022, 07:58

                  @mrjj is there any way to use Qt::FramelessWindowHint and giving resizeability to the widget at the same time. Because whenweused the Qt::FramelessWindowHint, widget is not able to be resizeable anymore ?

                  M Offline
                  M Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on 15 Dec 2022, 12:53 last edited by mrjj
                  #31

                  @Yunus
                  Hi
                  Sadly not. That flag removes the decorations. ( the frame) and those are used by the OS to resize.
                  It's possible to hand code it but it's hard work.
                  Often people use less code-intensive solution and allow resize from right, bottom corner only.
                  Using this class
                  https://doc.qt.io/qt-6/qsizegrip.html

                  1 Reply Last reply
                  1
                  • JonBJ Offline
                    JonBJ Offline
                    JonB
                    wrote on 15 Dec 2022, 12:55 last edited by
                    #32

                    @Yunus , @mrjj
                    See https://forum.qt.io/topic/141510/how-to-make-framelesswindowhint-resizable

                    1 Reply Last reply
                    2
                    • M Offline
                      M Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on 15 Dec 2022, 16:14 last edited by
                      #33

                      Hi
                      There is also
                      https://github.com/dfct/TrueFramelessWindow
                      which supports most features like resizing and dragging

                      1 Reply Last reply
                      2
                      • L lansing
                        5 Jul 2020, 14:13

                        I want to hide the default "window title" bar that's on top of the dockwidget, I couldn't find the answer anywhere.

                        UPDATE: update to a more accurate title for future reference

                        RokeJulianLockhartR Offline
                        RokeJulianLockhartR Offline
                        RokeJulianLockhart
                        wrote on 9 Feb 2025, 18:58 last edited by RokeJulianLockhart 2 Sept 2025, 19:04
                        #34

                        I want to hide the default "window title" bar that's on top of the dockwidget.

                        @lansing, stackoverflow.com/revisions/21701604/1 should work:

                        dockWidget->setTitleBarWidget(new QWidget());
                        

                        Otherwise, maybe follow stackoverflow.com/q/18918496.

                        When using a forum, remember to tag the person you are responding to, in case they are not subscribed to the thread.

                        1 Reply Last reply
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