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Forum Update on Monday, May 27th 2025

I'm back with a GPU.. Qt Creator still not working

Scheduled Pinned Locked Moved Unsolved Qt Creator and other tools
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  • JoeCFDJ JoeCFD

    @Mlibu create a shell script to collect all needed libs and packages and run it every time you install a new Linux.

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    Mlibu
    wrote on last edited by
    #113

    @JoeCFD But you can't tell me what is needed.. So how do I know what to put in the script?

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    • M Mlibu

      @JoeCFD But you can't tell me what is needed.. So how do I know what to put in the script?

      JonBJ Offline
      JonBJ Offline
      JonB
      wrote on last edited by
      #114

      @Mlibu
      Does

      sudo apt install qtdeclarative5-dev
      

      help?

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      • JonBJ JonB

        @Mlibu
        Does

        sudo apt install qtdeclarative5-dev
        

        help?

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        Mlibu
        wrote on last edited by Mlibu
        #115

        @JonB Yes, now there is no more error and it builds but the design page doesn't activate at all, even if I open the qml file.

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        • M Mlibu

          @JonB Yes, now there is no more error and it builds but the design page doesn't activate at all, even if I open the qml file.

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          JonB
          wrote on last edited by
          #116

          @Mlibu
          Like I said, I have never used or installed QML. But if you keep your Ubuntu in this state I will just install that qtdeclarative5-dev tomorrow and see where I find myself :)

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          • M Mlibu

            @Ronel_qtmaster But I think you need the plugin for it to interface with design studio. And anyway I was told that it is different than design studio. Regardless, on updated windows 10 I can only get to the page if I install the plugin and it still doesn't work.

            Ronel_qtmasterR Offline
            Ronel_qtmasterR Offline
            Ronel_qtmaster
            wrote on last edited by
            #117

            @Mlibu you only need to activate the plugin by checking it and click on okay.You do not need to click on install since the online installation comes with qtdesign studio and the plugin.So no need to click on install just enable it and restard Qt

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            • JonBJ JonB

              @Mlibu
              Like I said, I have never used or installed QML. But if you keep your Ubuntu in this state I will just install that qtdeclarative5-dev tomorrow and see where I find myself :)

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              Mlibu
              wrote on last edited by Mlibu
              #118

              @JonB So a question... I found this posted on the qt creator 6 release:

              https://www.qt.io/blog/qt-creator-6-released

              "The integrated Qt Quick Designer is now disabled by default. Qt Creator will open .ui.qml files in Qt Design Studio. This is a step towards a more integrated workflow between Qt Design Studio and Qt Creator (video). Qt Quick Designer is still there, you can manually enable it again by checking the QmlDesigner plugin in Help > About Plugins."

              Yet when I try to activate the plugin, there isn't one to activate.

              So if this was underway in qt creator 6, is it going to do anything different than qt design studio does anyway? Is this even supposed to work in qt creator 12?

              I watched some videos on qt design studio and they seemed to be more geared towards creating components than creating a full application. Also a lot of the functionality to migrate from photoshop is commercial and that won't be avilable.

              Ronel_qtmasterR 1 Reply Last reply
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              • M Mlibu

                @JonB So a question... I found this posted on the qt creator 6 release:

                https://www.qt.io/blog/qt-creator-6-released

                "The integrated Qt Quick Designer is now disabled by default. Qt Creator will open .ui.qml files in Qt Design Studio. This is a step towards a more integrated workflow between Qt Design Studio and Qt Creator (video). Qt Quick Designer is still there, you can manually enable it again by checking the QmlDesigner plugin in Help > About Plugins."

                Yet when I try to activate the plugin, there isn't one to activate.

                So if this was underway in qt creator 6, is it going to do anything different than qt design studio does anyway? Is this even supposed to work in qt creator 12?

                I watched some videos on qt design studio and they seemed to be more geared towards creating components than creating a full application. Also a lot of the functionality to migrate from photoshop is commercial and that won't be avilable.

                Ronel_qtmasterR Offline
                Ronel_qtmasterR Offline
                Ronel_qtmaster
                wrote on last edited by
                #119

                @Mlibu Exacty what i was saying above.Just check qml designer on plugin side, click on ok and restart Qt.it WILL locate your Qt Design studio

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                • Ronel_qtmasterR Ronel_qtmaster

                  @Mlibu Exacty what i was saying above.Just check qml designer on plugin side, click on ok and restart Qt.it WILL locate your Qt Design studio

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                  Mlibu
                  wrote on last edited by
                  #120

                  @Ronel_qtmaster But what I said was, there is no Qt Quick Designer plugin to check in this install.

                  Ronel_qtmasterR JoeCFDJ 2 Replies Last reply
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                  • M Mlibu

                    @Ronel_qtmaster But what I said was, there is no Qt Quick Designer plugin to check in this install.

                    Ronel_qtmasterR Offline
                    Ronel_qtmasterR Offline
                    Ronel_qtmaster
                    wrote on last edited by Ronel_qtmaster
                    #121

                    @Mlibu may i see the list? it is weird if it is not present on windows installation.It is QMLDESIGNER

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                    • M Mlibu

                      @Ronel_qtmaster But what I said was, there is no Qt Quick Designer plugin to check in this install.

                      JoeCFDJ Offline
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                      JoeCFD
                      wrote on last edited by JoeCFD
                      #122

                      @Mlibu When did you install it?
                      sudo apt install qttools5-dev-tools

                      now you can write down all libs and packages you need into a shell script.

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                      • Ronel_qtmasterR Ronel_qtmaster

                        @Mlibu may i see the list? it is weird if it is not present on windows installation.It is QMLDESIGNER

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                        Mlibu
                        wrote on last edited by
                        #123

                        @Ronel_qtmaster Sorry I mixed up the threads. The plugin is missing on Ubuntu 12.04. I have it on windows, but then the page doesn't work properly.

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                        • JoeCFDJ JoeCFD

                          @Mlibu When did you install it?
                          sudo apt install qttools5-dev-tools

                          now you can write down all libs and packages you need into a shell script.

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                          Mlibu
                          wrote on last edited by
                          #124

                          @JoeCFD said in I'm back with a GPU.. Qt Creator still not working:

                          qttools5-dev-tools

                          qttools5-dev-tools was already installed as a dependency from something else.

                          JoeCFDJ 1 Reply Last reply
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                          • M Mlibu

                            @JoeCFD said in I'm back with a GPU.. Qt Creator still not working:

                            qttools5-dev-tools

                            qttools5-dev-tools was already installed as a dependency from something else.

                            JoeCFDJ Offline
                            JoeCFDJ Offline
                            JoeCFD
                            wrote on last edited by JoeCFD
                            #125

                            @Mlibu Actually, Qt 6 is old in Ubuntu 22.04. You can install Qt 6.6.2 with Qt online installer. I purged Qt6 in Ubuntu 22.04 and installed Qt 6.6.2.

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                            • JoeCFDJ JoeCFD

                              @Mlibu Actually, Qt 6 is old in Ubuntu 22.04. You can install Qt 6.6.2 with Qt online installer. I purged Qt6 in Ubuntu 22.04 and installed Qt 6.6.2.

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                              Mlibu
                              wrote on last edited by Mlibu
                              #126

                              @JoeCFD I think I found a couple other threads with the problem I am having.

                              https://forum.qt.io/topic/152332/item-could-not-be-created-please-help-me

                              I don't think it's to do with the install at all really. Rather, Qt is failing to interpret the small sample file and the rendering is messed up because it is confused about how large the window is. The error "item could not be created" on the window is the key I think.

                              Anyone who solved it seemed to switch from "Use fallback emulation layer" to "Use QML emulation layer that is built with the selected Qt" in Edit->Preferences->Qt Quick->Qt Quick Designer. I just don't quite know how it works or what to set it to yet.

                              Some people have run qmlpuppet on its own and seen if it has errors. Will try tomorrow.

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                              • M Mlibu

                                @JoeCFD I think I found a couple other threads with the problem I am having.

                                https://forum.qt.io/topic/152332/item-could-not-be-created-please-help-me

                                I don't think it's to do with the install at all really. Rather, Qt is failing to interpret the small sample file and the rendering is messed up because it is confused about how large the window is. The error "item could not be created" on the window is the key I think.

                                Anyone who solved it seemed to switch from "Use fallback emulation layer" to "Use QML emulation layer that is built with the selected Qt" in Edit->Preferences->Qt Quick->Qt Quick Designer. I just don't quite know how it works or what to set it to yet.

                                Some people have run qmlpuppet on its own and seen if it has errors. Will try tomorrow.

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                                Mlibu
                                wrote on last edited by Mlibu
                                #127

                                @Mlibu
                                So I just found this bug report, last reported in February!

                                https://bugreports.qt.io/browse/QTCREATORBUG-30202

                                Qt recommends to use Qt Design Studio! But it's not the same?? To my knowledge Design Studio doesn't even support adding signals and slots.

                                UPDATE: This is so very confusing... I found this page:

                                https://cutehmi.kde.org/docs/3/doc/md_using-qt-creator-in-design-mode.html

                                He says you need to build in release for the Designer to work so I did a release build but that didn't work for me. Then he says you need to set the QML emulation layer, which I was kind of on to.... but set it to what?? he doesn't say!

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                                • M Mlibu

                                  @Mlibu
                                  So I just found this bug report, last reported in February!

                                  https://bugreports.qt.io/browse/QTCREATORBUG-30202

                                  Qt recommends to use Qt Design Studio! But it's not the same?? To my knowledge Design Studio doesn't even support adding signals and slots.

                                  UPDATE: This is so very confusing... I found this page:

                                  https://cutehmi.kde.org/docs/3/doc/md_using-qt-creator-in-design-mode.html

                                  He says you need to build in release for the Designer to work so I did a release build but that didn't work for me. Then he says you need to set the QML emulation layer, which I was kind of on to.... but set it to what?? he doesn't say!

                                  M Online
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                                  Mlibu
                                  wrote on last edited by Mlibu
                                  #128

                                  @Mlibu Ok well I thought I had figured it out with this forum comment:

                                  https://forum.qt.io/topic/148745/cannot-connect-to-qml-emulation-layer-qml-puppet

                                  So I thought I needed to change the 'qml emulation layer' to the directory that holds qml2puppet which I found under QtQuickDesigner directory. But that didn't work either.

                                  I also tried the puppet in /usr/share/qtcreator/qml/qmlpuppet/qml2puppet and that didn't work either.

                                  I think I need to resign myself to the fact that there is no possible combination under which this will work for me. I have exhausted every measure I can find. I will either do QML by hand or use Design Studio.

                                  It's a funny thing this problem. There are a few comments out there that Qt Creator is a piece of sh%t and they can't get it to work and they are just going to use something other than Qt and they basically have the same problems I have. Then there is a youtube video of someone having it work fine from 2023. I don't know how this all adds up, but this is taking time from other important work that I have.

                                  I did ./QtDesignStudio/qt6_design_studio_reduced_version/bin/qml2puppet-4.4.0 --test

                                  It looks fine. All libraries there and loaded.

                                  After this I also tried to remove build directories and start a new project but it still doesn't work. There are just so many conflicting comments and instructions I don't know what to do any more.

                                  Please, please.. if anyone can figure out what my problem may be, I would love to hear the answer. But I have had to put way too much time into this.

                                  I'm going to tuck my tail between my legs and go back to Manjaro KDE now. I'll leave a small partition to test other OSes with if anyone has any other ideas.

                                  Ronel_qtmasterR 1 Reply Last reply
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                                  • M Mlibu

                                    @Mlibu Ok well I thought I had figured it out with this forum comment:

                                    https://forum.qt.io/topic/148745/cannot-connect-to-qml-emulation-layer-qml-puppet

                                    So I thought I needed to change the 'qml emulation layer' to the directory that holds qml2puppet which I found under QtQuickDesigner directory. But that didn't work either.

                                    I also tried the puppet in /usr/share/qtcreator/qml/qmlpuppet/qml2puppet and that didn't work either.

                                    I think I need to resign myself to the fact that there is no possible combination under which this will work for me. I have exhausted every measure I can find. I will either do QML by hand or use Design Studio.

                                    It's a funny thing this problem. There are a few comments out there that Qt Creator is a piece of sh%t and they can't get it to work and they are just going to use something other than Qt and they basically have the same problems I have. Then there is a youtube video of someone having it work fine from 2023. I don't know how this all adds up, but this is taking time from other important work that I have.

                                    I did ./QtDesignStudio/qt6_design_studio_reduced_version/bin/qml2puppet-4.4.0 --test

                                    It looks fine. All libraries there and loaded.

                                    After this I also tried to remove build directories and start a new project but it still doesn't work. There are just so many conflicting comments and instructions I don't know what to do any more.

                                    Please, please.. if anyone can figure out what my problem may be, I would love to hear the answer. But I have had to put way too much time into this.

                                    I'm going to tuck my tail between my legs and go back to Manjaro KDE now. I'll leave a small partition to test other OSes with if anyone has any other ideas.

                                    Ronel_qtmasterR Offline
                                    Ronel_qtmasterR Offline
                                    Ronel_qtmaster
                                    wrote on last edited by
                                    #129

                                    @Mlibu what if you download and install design studio apart from Qt?

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                                    • Ronel_qtmasterR Ronel_qtmaster

                                      @Mlibu what if you download and install design studio apart from Qt?

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                                      Mlibu
                                      wrote on last edited by
                                      #130

                                      @Ronel_qtmaster Yes design studio works but I wanted the designer in qt creator rather than design studio.

                                      Ronel_qtmasterR 1 Reply Last reply
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                                      • M Mlibu

                                        @Ronel_qtmaster Yes design studio works but I wanted the designer in qt creator rather than design studio.

                                        Ronel_qtmasterR Offline
                                        Ronel_qtmasterR Offline
                                        Ronel_qtmaster
                                        wrote on last edited by
                                        #131

                                        @Mlibu in qt6 design studio is the official designer for qml

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                                        • Ronel_qtmasterR Ronel_qtmaster

                                          @Mlibu in qt6 design studio is the official designer for qml

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                                          Mlibu
                                          wrote on last edited by
                                          #132

                                          @Ronel_qtmaster I was under the impression that qt creator was better for integrating with C++ and design studio was more for standalone QML.

                                          T 1 Reply Last reply
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