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How to exchange data between qt and javascript?

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  • small_birdS small_bird

    @jsulm Do you know three.js? I try to use that engine.

    jsulmJ Online
    jsulmJ Online
    jsulm
    Lifetime Qt Champion
    wrote on last edited by
    #6

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

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

    small_birdS 2 Replies Last reply
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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.

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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 Online
          jsulmJ Online
          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
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            small_bird
            wrote on last edited by
            #10

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

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            • small_birdS small_bird

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

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              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
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                small_bird
                wrote on last edited by
                #12

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

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                • small_birdS small_bird

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

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                  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?

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                    • small_birdS small_bird

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

                      jsulmJ Online
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                      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.

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                        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 Online
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                          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
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                            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 Online
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                              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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