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How to exchange data between qt and javascript?

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  • jsulmJ jsulm

    @small_bird But how? You're using C++/Qt and JavaScript, right?

    small_birdS Offline
    small_birdS Offline
    small_bird
    wrote on last edited by
    #7

    @jsulm yes

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    • jsulmJ jsulm

      @small_bird But how? You're using C++/Qt and JavaScript, right?

      small_birdS Offline
      small_birdS Offline
      small_bird
      wrote on last edited by
      #8

      @jsulm So I need to transmit data between qt and javascript. How to do that? Through signal and slot mechanism.

      jsulmJ 1 Reply Last reply
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      • small_birdS small_bird

        @jsulm So I need to transmit data between qt and javascript. How to do that? Through signal and slot mechanism.

        jsulmJ Offline
        jsulmJ Offline
        jsulm
        Lifetime Qt Champion
        wrote on last edited by
        #9

        @small_bird I have no idea as long as you do not tell us how you're using JavaScript in your C++ app!

        https://forum.qt.io/topic/113070/qt-code-of-conduct

        small_birdS 2 Replies Last reply
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        • jsulmJ jsulm

          @small_bird I have no idea as long as you do not tell us how you're using JavaScript in your C++ app!

          small_birdS Offline
          small_birdS Offline
          small_bird
          wrote on last edited by
          #10

          @jsulm Actually, it is not c++. It is QML and javascript.

          jsulmJ 1 Reply Last reply
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          • small_birdS small_bird

            @jsulm Actually, it is not c++. It is QML and javascript.

            jsulmJ Offline
            jsulmJ Offline
            jsulm
            Lifetime Qt Champion
            wrote on last edited by
            #11

            @small_bird Good to know. I already asked you whether you're using QML you said no...
            If you're using QML without C++ then I'm wondering how you can use QImage as you asked before?
            Take a look at http://doc.qt.io/qt-5/qtqml-javascript-topic.html

            https://forum.qt.io/topic/113070/qt-code-of-conduct

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            • jsulmJ jsulm

              @small_bird I have no idea as long as you do not tell us how you're using JavaScript in your C++ app!

              small_birdS Offline
              small_birdS Offline
              small_bird
              wrote on last edited by
              #12

              @jsulm However, now, I want to exchange data between C++ and javascript.

              jsulmJ 1 Reply Last reply
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              • small_birdS small_bird

                @jsulm However, now, I want to exchange data between C++ and javascript.

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #13

                @small_bird Then exchange it between C++ and QML (check Qt documentation for this) and from QML then to JavaScript.
                Or do you want to remove QML completely?

                https://forum.qt.io/topic/113070/qt-code-of-conduct

                small_birdS 1 Reply Last reply
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                • jsulmJ jsulm

                  @small_bird Then exchange it between C++ and QML (check Qt documentation for this) and from QML then to JavaScript.
                  Or do you want to remove QML completely?

                  small_birdS Offline
                  small_birdS Offline
                  small_bird
                  wrote on last edited by
                  #14

                  @jsulm yes I have done that. But how to exchange qimage from qml to javascript?

                  jsulmJ 1 Reply Last reply
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                  • small_birdS small_bird

                    @jsulm yes I have done that. But how to exchange qimage from qml to javascript?

                    jsulmJ Offline
                    jsulmJ Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on last edited by
                    #15

                    @small_bird I don't know I would say it depends on that JavaScript three.js framework. Check it's API and data types.

                    https://forum.qt.io/topic/113070/qt-code-of-conduct

                    small_birdS 2 Replies Last reply
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                    • jsulmJ jsulm

                      @small_bird I don't know I would say it depends on that JavaScript three.js framework. Check it's API and data types.

                      small_birdS Offline
                      small_birdS Offline
                      small_bird
                      wrote on last edited by
                      #16

                      @jsulm No, the javascript's grammar is the same with three.js engine.

                      jsulmJ 1 Reply Last reply
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                      • small_birdS small_bird

                        @jsulm No, the javascript's grammar is the same with three.js engine.

                        jsulmJ Offline
                        jsulmJ Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on last edited by
                        #17

                        @small_bird What do you mean by "grammar" and "engine"? three.js is a 3D JavaScript framework/library, right? So you need to check its documentation if you want to use it.

                        https://forum.qt.io/topic/113070/qt-code-of-conduct

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                        • jsulmJ jsulm

                          @small_bird I don't know I would say it depends on that JavaScript three.js framework. Check it's API and data types.

                          small_birdS Offline
                          small_birdS Offline
                          small_bird
                          wrote on last edited by small_bird
                          #18

                          Yes, that's it. I have checked that, but how to transmit qimage data between qml and js function as it is not a inner type?

                          jsulmJ 1 Reply Last reply
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                          • small_birdS small_bird

                            Yes, that's it. I have checked that, but how to transmit qimage data between qml and js function as it is not a inner type?

                            jsulmJ Offline
                            jsulmJ Offline
                            jsulm
                            Lifetime Qt Champion
                            wrote on last edited by
                            #19

                            @small_bird said in How to exchange data between qt and javascript?:

                            That's three.js engine is written by javascript.

                            Sure it is. That's not the point. It has an API, right? See its documentation: https://threejs.org/docs/index.html#manual/introduction/Creating-a-scene

                            https://forum.qt.io/topic/113070/qt-code-of-conduct

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