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What can I do for my QtWidget-Program's Window correctly positioned on the screen?

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  • jsulmJ jsulm

    @foghere2023 How do you show those messages?
    See https://doc.qt.io/qt-6/qdialog.html#QDialog : if you provide parent to dialog constructor the dialog should be automatically centered on the parent.

    foghere2023F Offline
    foghere2023F Offline
    foghere2023
    wrote on last edited by
    #9

    @jsulm Hi guys ,I find someone had the same problem as me:

    The QDialog default position should locate at centered on top of the parent's top-level widget.
    But QDialog in Wayland shows on a random position. Even I try to use "move" to assign a specific position, it doesn't work.
    

    qdialog-in-wayland-works-incomplete

    1 Reply Last reply
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    • jsulmJ jsulm

      @foghere2023 How do you show those messages?
      See https://doc.qt.io/qt-6/qdialog.html#QDialog : if you provide parent to dialog constructor the dialog should be automatically centered on the parent.

      foghere2023F Offline
      foghere2023F Offline
      foghere2023
      wrote on last edited by foghere2023
      #10

      @jsulm

      According to the normal logic, the pop-up message prompt should be suspended on the upper layer of the parent window.

      QMessageBox and some child Dialog cannot on top of its parent window in Wayland,this looks like Qwidget's bug.

      What should i do ?

      JonBJ 1 Reply Last reply
      0
      • foghere2023F foghere2023

        @jsulm

        According to the normal logic, the pop-up message prompt should be suspended on the upper layer of the parent window.

        QMessageBox and some child Dialog cannot on top of its parent window in Wayland,this looks like Qwidget's bug.

        What should i do ?

        JonBJ Offline
        JonBJ Offline
        JonB
        wrote on last edited by
        #11

        @foghere2023
        See if it works under Xorg?
        If so wait for it to work under Wayland at a future date, assuming it can?

        foghere2023F 1 Reply Last reply
        0
        • JonBJ JonB

          @foghere2023
          See if it works under Xorg?
          If so wait for it to work under Wayland at a future date, assuming it can?

          foghere2023F Offline
          foghere2023F Offline
          foghere2023
          wrote on last edited by foghere2023
          #12

          @JonB thank you guys, it works very well under Xorg,and I have test a simple Demo like is :

          void MainWindow::on_pushButton_clicked()
          {
              QMessageBox::information(this,"提示消息","已成功读档!");
          }
          

          This Demo only have one line of command here for QMessageBox , I have spent all day for the workaround,I don't know this is my false or Qt-team‘s. :(

          alt text

          as your piont ,this is not my false ?

          SGaistS 1 Reply Last reply
          0
          • foghere2023F foghere2023

            @JonB thank you guys, it works very well under Xorg,and I have test a simple Demo like is :

            void MainWindow::on_pushButton_clicked()
            {
                QMessageBox::information(this,"提示消息","已成功读档!");
            }
            

            This Demo only have one line of command here for QMessageBox , I have spent all day for the workaround,I don't know this is my false or Qt-team‘s. :(

            alt text

            as your piont ,this is not my false ?

            SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #13

            @foghere2023 hi,

            It's neither. See the Wayland doc.

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

            JoeCFDJ foghere2023F 2 Replies Last reply
            0
            • SGaistS SGaist

              @foghere2023 hi,

              It's neither. See the Wayland doc.

              JoeCFDJ Offline
              JoeCFDJ Offline
              JoeCFD
              wrote on last edited by JoeCFD
              #14

              @SGaist https://community.nxp.com/t5/i-MX-Processors/QDialog-in-Wayland-works-incomplete/m-p/1544891#M196925

              foghere2023F 1 Reply Last reply
              0
              • SGaistS SGaist

                @foghere2023 hi,

                It's neither. See the Wayland doc.

                foghere2023F Offline
                foghere2023F Offline
                foghere2023
                wrote on last edited by
                #15

                @SGaist So guys,Reading the docs is just too difficult for me, someone tell me to wait, because there is a day that Qwidget App's Popups and parent windows can locate correctly .

                Is there any way we can get the program to work now?

                1 Reply Last reply
                0
                • JoeCFDJ JoeCFD

                  @SGaist https://community.nxp.com/t5/i-MX-Processors/QDialog-in-Wayland-works-incomplete/m-p/1544891#M196925

                  foghere2023F Offline
                  foghere2023F Offline
                  foghere2023
                  wrote on last edited by
                  #16

                  @JoeCFD

                  I had find this post,And I don't know what is weston.

                  JoeCFDJ 2 Replies Last reply
                  0
                  • foghere2023F Offline
                    foghere2023F Offline
                    foghere2023
                    wrote on last edited by
                    #17

                    Can someone help me?

                    1 Reply Last reply
                    0
                    • JonBJ JonB referenced this topic on
                    • foghere2023F Offline
                      foghere2023F Offline
                      foghere2023
                      wrote on last edited by
                      #18

                      Looking forward to friends repeating this bug

                      SGaistS 1 Reply Last reply
                      0
                      • foghere2023F foghere2023

                        Looking forward to friends repeating this bug

                        SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #19

                        @foghere2023 please show some patience and allow at least 24 hours to pass before bumping your own thread. This is a voluntary driven forum and people may not live in the same timezone as you.

                        Weston is the reference implementation of a Wayland compositor.

                        As for your issue, the Wayland specification is explicit, windows cannot move themselves around the desktop.

                        Interested in AI ? www.idiap.ch
                        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                        JonBJ foghere2023F 2 Replies Last reply
                        2
                        • SGaistS SGaist

                          @foghere2023 please show some patience and allow at least 24 hours to pass before bumping your own thread. This is a voluntary driven forum and people may not live in the same timezone as you.

                          Weston is the reference implementation of a Wayland compositor.

                          As for your issue, the Wayland specification is explicit, windows cannot move themselves around the desktop.

                          JonBJ Offline
                          JonBJ Offline
                          JonB
                          wrote on last edited by
                          #20

                          @SGaist said in What can I do for my QtWidget-Program's Window correctly positioned on the screen?:

                          As for your issue, the Wayland specification is explicit, windows cannot move themselves around the desktop.

                          Thank you for this :)

                          1 Reply Last reply
                          0
                          • foghere2023F foghere2023

                            @JoeCFD

                            I had find this post,And I don't know what is weston.

                            JoeCFDJ Offline
                            JoeCFDJ Offline
                            JoeCFD
                            wrote on last edited by JoeCFD
                            #21

                            @foghere2023 said in What can I do for my QtWidget-Program's Window correctly positioned on the screen?:

                            weston

                            Weston is the reference implementation of a Wayland compositor, as well as a useful environment in and of itself.

                            You can easily create a customized widget to replace it. Make your mainwindow to be its parent and it will always pop-up on top of main window.

                            The source code is here and you can borrow some
                            https://code.qt.io/cgit/qt/qtbase.git/tree/src/widgets/dialogs/qmessagebox.cpp?h=dev

                            1 Reply Last reply
                            0
                            • foghere2023F foghere2023

                              @JoeCFD

                              I had find this post,And I don't know what is weston.

                              JoeCFDJ Offline
                              JoeCFDJ Offline
                              JoeCFD
                              wrote on last edited by JoeCFD
                              #22

                              @foghere2023
                              Two solutions in that post:

                              1. Replace weston with Qtwayland compositor
                              2. Don't use wayland at all, but use the eglfs platform plugin.

                              You may not be able to select 2. Then try solution 1.
                              The side effect is you can't use g2d rendering. If you do not have issues with it, then go with it. Find out how to replace weston with Qtwayland compositor

                              JonBJ 1 Reply Last reply
                              0
                              • SGaistS SGaist

                                @foghere2023 please show some patience and allow at least 24 hours to pass before bumping your own thread. This is a voluntary driven forum and people may not live in the same timezone as you.

                                Weston is the reference implementation of a Wayland compositor.

                                As for your issue, the Wayland specification is explicit, windows cannot move themselves around the desktop.

                                foghere2023F Offline
                                foghere2023F Offline
                                foghere2023
                                wrote on last edited by
                                #23

                                @SGaist @JoeCFD

                                My friends, I may not have accurately described my problem, so that you did not understand what happened here. I didn't want to move the window, but the message pop-up window appeared in the wrong place.

                                this is a Demo:

                                https://github.com/cppxiaozhu/Demo

                                alt text

                                JoeCFDJ 1 Reply Last reply
                                0
                                • foghere2023F foghere2023

                                  @SGaist @JoeCFD

                                  My friends, I may not have accurately described my problem, so that you did not understand what happened here. I didn't want to move the window, but the message pop-up window appeared in the wrong place.

                                  this is a Demo:

                                  https://github.com/cppxiaozhu/Demo

                                  alt text

                                  JoeCFDJ Offline
                                  JoeCFDJ Offline
                                  JoeCFD
                                  wrote on last edited by
                                  #24

                                  @foghere2023 The post in the link had the exactly same problem.

                                  The QDialog default position should locate at centered on top of the parent's top-level widget.
                                  But QDialog in Wayland shows on a random position.

                                  foghere2023F 1 Reply Last reply
                                  0
                                  • JoeCFDJ JoeCFD

                                    @foghere2023 The post in the link had the exactly same problem.

                                    The QDialog default position should locate at centered on top of the parent's top-level widget.
                                    But QDialog in Wayland shows on a random position.

                                    foghere2023F Offline
                                    foghere2023F Offline
                                    foghere2023
                                    wrote on last edited by
                                    #25

                                    @JoeCFD Thank you friend,I have read that post,but I don't know how to do.

                                    1 Reply Last reply
                                    0
                                    • JoeCFDJ JoeCFD

                                      @foghere2023
                                      Two solutions in that post:

                                      1. Replace weston with Qtwayland compositor
                                      2. Don't use wayland at all, but use the eglfs platform plugin.

                                      You may not be able to select 2. Then try solution 1.
                                      The side effect is you can't use g2d rendering. If you do not have issues with it, then go with it. Find out how to replace weston with Qtwayland compositor

                                      JonBJ Offline
                                      JonBJ Offline
                                      JonB
                                      wrote on last edited by JonB
                                      #26

                                      @foghere2023

                                      but I don't know how to do.

                                      @JoeCFD said:

                                      Two solutions in that post:

                                      1. Replace weston with Qtwayland compositor
                                      2. Don't use wayland at all, but use the eglfs platform plugin.

                                      You may not be able to select 2. Then try solution 1.

                                      If that is what @JoeCFD are the alternatives then have you tried either of them?

                                      foghere2023F 1 Reply Last reply
                                      0
                                      • JonBJ JonB

                                        @foghere2023

                                        but I don't know how to do.

                                        @JoeCFD said:

                                        Two solutions in that post:

                                        1. Replace weston with Qtwayland compositor
                                        2. Don't use wayland at all, but use the eglfs platform plugin.

                                        You may not be able to select 2. Then try solution 1.

                                        If that is what @JoeCFD are the alternatives then have you tried either of them?

                                        foghere2023F Offline
                                        foghere2023F Offline
                                        foghere2023
                                        wrote on last edited by
                                        #27

                                        @JonB @SGaist @JoeCFD

                                        Hi friend,this is a simple Demo,could you show me how to improve or repair this issue ?

                                        https://github.com/cppxiaozhu/Demo

                                        I really want to fix this problem, but there is no example to learn.

                                        The compilation environment I use is a binary version downloaded from the QT official website. Now almost all Linux distributions have defaulted to the wayland environment, and the official tools of QT cannot adapt to this new situation. I sincerely hope that someone can seriously deal with
                                        the Bug that can be reproduced in one line of code

                                        JonBJ 1 Reply Last reply
                                        0
                                        • foghere2023F foghere2023

                                          @JonB @SGaist @JoeCFD

                                          Hi friend,this is a simple Demo,could you show me how to improve or repair this issue ?

                                          https://github.com/cppxiaozhu/Demo

                                          I really want to fix this problem, but there is no example to learn.

                                          The compilation environment I use is a binary version downloaded from the QT official website. Now almost all Linux distributions have defaulted to the wayland environment, and the official tools of QT cannot adapt to this new situation. I sincerely hope that someone can seriously deal with
                                          the Bug that can be reproduced in one line of code

                                          JonBJ Offline
                                          JonBJ Offline
                                          JonB
                                          wrote on last edited by
                                          #28

                                          @foghere2023
                                          You simply keep saying you don't know what to do and asking for help. We know it's know in the place you want. We know what your code is. We have said this is a Wayland issue, there is no more to ask about.

                                          Let us know when you have tried, say, @JoeCFD's suggestions....

                                          foghere2023F 1 Reply Last reply
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