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

    but the matter of refactoring wedgit

    The suggestion was not to refactor anything.
    This was suggested by @JoeCFD

    1. Replace weston with Qtwayland compositor
    2. Don't use wayland at all, but use the eglfs platform plugin.
    
    foghere2023F Offline
    foghere2023F Offline
    foghere2023
    wrote on last edited by foghere2023
    #31

    @jsulm thank you, but I don't konw what is ' Replace weston with Qtwayland compositor ':

    this is a Demo,it is very simple, only a line sentence to delimit a popup message

    https://github.com/cppxiaozhu/Demo

    Where is ' weston ' ,and how to 'Replace weston with Qtwayland compositor' ?

    On these most basic things, I can't figure it out.

    JoeCFDJ 1 Reply Last reply
    0
    • foghere2023F foghere2023

      @jsulm thank you, but I don't konw what is ' Replace weston with Qtwayland compositor ':

      this is a Demo,it is very simple, only a line sentence to delimit a popup message

      https://github.com/cppxiaozhu/Demo

      Where is ' weston ' ,and how to 'Replace weston with Qtwayland compositor' ?

      On these most basic things, I can't figure it out.

      JoeCFDJ Offline
      JoeCFDJ Offline
      JoeCFD
      wrote on last edited by JoeCFD
      #32

      @foghere2023 https://www.youtube.com/watch?v=mIg1P3i2ZfI
      I guess the default compositor on Wayland is weston. What you need to do is to replace it with Qtwayland compositor.
      Turn weston off and turn Qtwayland compositor on.
      Watch the video above and you may get some ideas.

      foghere2023F 1 Reply Last reply
      0
      • JoeCFDJ JoeCFD

        @foghere2023 https://www.youtube.com/watch?v=mIg1P3i2ZfI
        I guess the default compositor on Wayland is weston. What you need to do is to replace it with Qtwayland compositor.
        Turn weston off and turn Qtwayland compositor on.
        Watch the video above and you may get some ideas.

        foghere2023F Offline
        foghere2023F Offline
        foghere2023
        wrote on last edited by
        #33

        @JoeCFD

        thank you very much,

        but I had watch that Video several days ago, the Video show us How to create a new Class by Qtwayland compositor with QML.

        so I think maybe I need refactor all UI-Class such as QMessageBox or QDialog,This challenge is too difficult for me.

        in my ubuntu22.04-lts,the wayland compositor is Xwayland.

        my friend, your suggested「Turn weston off and turn Qtwayland compositor on」is mean I need do something with my Qtcreator or My PC system?

        for example,what should I do in this Demo?

        https://github.com/cppxiaozhu/Demo

        If it is only for the correct position of the message prompt window of the compiled APP, then it is the easiest way to let their users no longer use the wayland desktop.

        But I'm trying to do something to adapt this program to the wayland desktop.

        I'm very depressed now because you guys say it's a wayland bug, and considering wayland's slow update mechanism, I don't think I'll see a solution in my lifetime.

        As far as I know, the time it takes for wayland to fix some of its inherent problems needs to be counted in decades.

        I've tried my best to find information, but almost none of them are particularly detailed.

        alt text1

        alt text2

        JoeCFDJ 1 Reply Last reply
        0
        • foghere2023F foghere2023

          @JoeCFD

          thank you very much,

          but I had watch that Video several days ago, the Video show us How to create a new Class by Qtwayland compositor with QML.

          so I think maybe I need refactor all UI-Class such as QMessageBox or QDialog,This challenge is too difficult for me.

          in my ubuntu22.04-lts,the wayland compositor is Xwayland.

          my friend, your suggested「Turn weston off and turn Qtwayland compositor on」is mean I need do something with my Qtcreator or My PC system?

          for example,what should I do in this Demo?

          https://github.com/cppxiaozhu/Demo

          If it is only for the correct position of the message prompt window of the compiled APP, then it is the easiest way to let their users no longer use the wayland desktop.

          But I'm trying to do something to adapt this program to the wayland desktop.

          I'm very depressed now because you guys say it's a wayland bug, and considering wayland's slow update mechanism, I don't think I'll see a solution in my lifetime.

          As far as I know, the time it takes for wayland to fix some of its inherent problems needs to be counted in decades.

          I've tried my best to find information, but almost none of them are particularly detailed.

          alt text1

          alt text2

          JoeCFDJ Offline
          JoeCFDJ Offline
          JoeCFD
          wrote on last edited by
          #34

          @foghere2023 I do not have an answer for you now. But I will take a look at it later.

          foghere2023F 1 Reply Last reply
          0
          • JoeCFDJ JoeCFD

            @foghere2023 I do not have an answer for you now. But I will take a look at it later.

            foghere2023F Offline
            foghere2023F Offline
            foghere2023
            wrote on last edited by
            #35

            @JoeCFD thank you

            1 Reply Last reply
            0
            • foghere2023F Offline
              foghere2023F Offline
              foghere2023
              wrote on last edited by
              #36

              After a long time, the problem remains unsolved.

              Christian EhrlicherC 1 Reply Last reply
              0
              • foghere2023F foghere2023

                After a long time, the problem remains unsolved.

                Christian EhrlicherC Offline
                Christian EhrlicherC Offline
                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on last edited by
                #37

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

                After a long time, the problem remains unsolved.

                I don't think it's the correct place here when you want wayland improvements.

                Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                Visit the Qt Academy at https://academy.qt.io/catalog

                foghere2023F 1 Reply Last reply
                1
                • Christian EhrlicherC Christian Ehrlicher

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

                  After a long time, the problem remains unsolved.

                  I don't think it's the correct place here when you want wayland improvements.

                  foghere2023F Offline
                  foghere2023F Offline
                  foghere2023
                  wrote on last edited by foghere2023
                  #38

                  @Christian-Ehrlicher

                  It's a pity that qwidget can't adapt to the new changes brought by wayland.

                  1 Reply Last reply
                  0
                  • posktomtenP Offline
                    posktomtenP Offline
                    posktomten
                    wrote on last edited by
                    #39

                    Maybe a workaround?

                    QMessageBox mMessageBox;
                    int x = this->x();
                    int y = this->y();
                    mMessageBox.setGeometry(x,y,300,100);
                    

                    posktomten

                    foghere2023F 3 Replies Last reply
                    0
                    • posktomtenP posktomten

                      Maybe a workaround?

                      QMessageBox mMessageBox;
                      int x = this->x();
                      int y = this->y();
                      mMessageBox.setGeometry(x,y,300,100);
                      
                      foghere2023F Offline
                      foghere2023F Offline
                      foghere2023
                      wrote on last edited by
                      #40

                      @posktomten

                      thank you , but it doesn't work,the Dialog cannot move itself to by 'move' func ,somebody says that wayland not provide coordinate data

                      1 Reply Last reply
                      0
                      • posktomtenP posktomten

                        Maybe a workaround?

                        QMessageBox mMessageBox;
                        int x = this->x();
                        int y = this->y();
                        mMessageBox.setGeometry(x,y,300,100);
                        
                        foghere2023F Offline
                        foghere2023F Offline
                        foghere2023
                        wrote on last edited by
                        #41

                        @posktomten

                        someone tell me :『Wayland does not support manual positioning』

                        1 Reply Last reply
                        0
                        • posktomtenP posktomten

                          Maybe a workaround?

                          QMessageBox mMessageBox;
                          int x = this->x();
                          int y = this->y();
                          mMessageBox.setGeometry(x,y,300,100);
                          
                          foghere2023F Offline
                          foghere2023F Offline
                          foghere2023
                          wrote on last edited by foghere2023
                          #42

                          @posktomten

                              int x = this->geometry().x();
                              int y = this->geometry().y();  
                              qDebug() << "Window position: (" << x << ", " << y << ")";
                          

                          the 「window position」is (0,0) forever

                          posktomtenP 1 Reply Last reply
                          0
                          • foghere2023F foghere2023

                            @posktomten

                                int x = this->geometry().x();
                                int y = this->geometry().y();  
                                qDebug() << "Window position: (" << x << ", " << y << ")";
                            

                            the 「window position」is (0,0) forever

                            posktomtenP Offline
                            posktomtenP Offline
                            posktomten
                            wrote on last edited by
                            #43

                            @foghere2023 Yes thank you! I apologize. I should have checked better.

                            posktomten

                            foghere2023F 1 Reply Last reply
                            0
                            • posktomtenP posktomten

                              @foghere2023 Yes thank you! I apologize. I should have checked better.

                              foghere2023F Offline
                              foghere2023F Offline
                              foghere2023
                              wrote on last edited by
                              #44

                              @posktomten

                              now,just use xcb like this for wayland user『QT_QPA_PLATFORM=xcb ./testApp』

                              Seb TurS 1 Reply Last reply
                              0
                              • foghere2023F foghere2023

                                @posktomten

                                now,just use xcb like this for wayland user『QT_QPA_PLATFORM=xcb ./testApp』

                                Seb TurS Offline
                                Seb TurS Offline
                                Seb Tur
                                wrote on last edited by
                                #45

                                @foghere2023
                                thanks for the tip , mid 2024 and the issue is still here with wayland

                                1 Reply Last reply
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