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QML License

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  • X Offline
    X Offline
    xiemchen
    wrote on last edited by
    #1

    Hi there,

    Can I keep my project close-source?

    I'm from a small company to use QML for development. I use qt open source version, I don't use qtcreator. I dynamically link to qt.

    Thanks for your help.

    jsulmJ 1 Reply Last reply
    0
    • X xiemchen

      Hi there,

      Can I keep my project close-source?

      I'm from a small company to use QML for development. I use qt open source version, I don't use qtcreator. I dynamically link to qt.

      Thanks for your help.

      jsulmJ Online
      jsulmJ Online
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #2

      @xiemchen As long as you can fullfil LGPLv3 you can keep your project closed-source.
      Keep in mind that some Qt modules are licensed differently (in some cases only GPL)!

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

      X 1 Reply Last reply
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      • jsulmJ jsulm

        @xiemchen As long as you can fullfil LGPLv3 you can keep your project closed-source.
        Keep in mind that some Qt modules are licensed differently (in some cases only GPL)!

        X Offline
        X Offline
        xiemchen
        wrote on last edited by
        #3

        @jsulm How to know whether my code fulfills the LGPL license?

        For example, if I link qquickwidget by setting in .pro file:
        QT += quickwidgets,
        I also search that the quickwidgets is under LGPL license after qt5.4 from:
        https://doc.qt.io/qt-5/qtquick-index.html#licenses-and-attributions

        So I can confirm that it's ok to close source my project, all right?

        Thank you:)

        jsulmJ 1 Reply Last reply
        0
        • X xiemchen

          @jsulm How to know whether my code fulfills the LGPL license?

          For example, if I link qquickwidget by setting in .pro file:
          QT += quickwidgets,
          I also search that the quickwidgets is under LGPL license after qt5.4 from:
          https://doc.qt.io/qt-5/qtquick-index.html#licenses-and-attributions

          So I can confirm that it's ok to close source my project, all right?

          Thank you:)

          jsulmJ Online
          jsulmJ Online
          jsulm
          Lifetime Qt Champion
          wrote on last edited by
          #4

          @xiemchen said in QML License:

          How to know whether my code fulfills the LGPL license?

          Please read the license first

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

          1 Reply Last reply
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          • X Offline
            X Offline
            xiemchen
            wrote on last edited by
            #5

            ok, thank you:)

            1 Reply Last reply
            0
            • sierdzioS Offline
              sierdzioS Offline
              sierdzio
              Moderators
              wrote on last edited by
              #6

              Here's a summary: https://tldrlegal.com/license/gnu-lesser-general-public-license-v3-(lgpl-3)

              (Z(:^

              1 Reply Last reply
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