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Thoughts on Qt

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  • K Offline
    K Offline
    Kurt2
    wrote on last edited by
    #1

    First, discovering Qt has saved my development career. Every other technology left me saying, "well... this is stupid."

    Second, in the FAQ, it states that Qt Open Source Edition can't be used "in house." The implications of this are ridiculous. If you want to learn Qt, you either have to purchase a commercial version for $1M per second (honestly, why is it so expensive?) Else invent an elaborate distribution plan for your "hello world" code...

    fcarneyF JKSHJ 2 Replies Last reply
    0
    • K Kurt2

      First, discovering Qt has saved my development career. Every other technology left me saying, "well... this is stupid."

      Second, in the FAQ, it states that Qt Open Source Edition can't be used "in house." The implications of this are ridiculous. If you want to learn Qt, you either have to purchase a commercial version for $1M per second (honestly, why is it so expensive?) Else invent an elaborate distribution plan for your "hello world" code...

      fcarneyF Offline
      fcarneyF Offline
      fcarney
      wrote on last edited by
      #2

      @Kurt2 Source? I searched and cannot find what you are referring to in the "in house" statement.

      C++ is a perfectly valid school of magic.

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      • fcarneyF Offline
        fcarneyF Offline
        fcarney
        wrote on last edited by
        #3

        If you want to use Qt without a commercial license then take some time to understand the GPL and LGPL. Most of Qt is LGPL except a few specific libraries. Some of the libraries are commercial license only.

        I use Qt for side projects and use only LGPL parts of Qt. This is because I understand the implications of that license and can abide by those implications.

        https://stackoverflow.com/questions/11994053/can-i-use-qt-lgpl-license-and-sell-my-application-without-any-kind-of-restrictio

        C++ is a perfectly valid school of magic.

        1 Reply Last reply
        1
        • K Kurt2

          First, discovering Qt has saved my development career. Every other technology left me saying, "well... this is stupid."

          Second, in the FAQ, it states that Qt Open Source Edition can't be used "in house." The implications of this are ridiculous. If you want to learn Qt, you either have to purchase a commercial version for $1M per second (honestly, why is it so expensive?) Else invent an elaborate distribution plan for your "hello world" code...

          JKSHJ Offline
          JKSHJ Offline
          JKSH
          Moderators
          wrote on last edited by
          #4

          @Kurt2 said in Thoughts on Qt:

          in the FAQ, it states that Qt Open Source Edition can't be used "in house."

          You are definitely allowed to use the open-source edition in-house.

          I selected "In-house" + LGPL at https://www.qt.io/download-guide and it led me to the open source edition.

          Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

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          • K Offline
            K Offline
            Kurt2
            wrote on last edited by
            #5

            Ah, i was looking at the archived FAQ from version 3.3... back then the answer was unequivocally NO.

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #6

              Hi,

              There has been a lot of changes since the Qt 3 days with regard to the licenses.

              In any case, the answer wasn't "no unequivocally". The no applied to non-free internal tool development. With a follow up explication about the problems that can be encountered when doing internal tool development with regard to dependencies and GPL.

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

              fcarneyF 1 Reply Last reply
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              • SGaistS SGaist

                Hi,

                There has been a lot of changes since the Qt 3 days with regard to the licenses.

                In any case, the answer wasn't "no unequivocally". The no applied to non-free internal tool development. With a follow up explication about the problems that can be encountered when doing internal tool development with regard to dependencies and GPL.

                fcarneyF Offline
                fcarneyF Offline
                fcarney
                wrote on last edited by
                #7

                @SGaist said in Thoughts on Qt:

                The no applied to non-free internal tool development

                That is why, if you don't know, a lawyer should clarify. These kinds of issues can be really nuanced.

                C++ is a perfectly valid school of magic.

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #8

                  Well, for once, the text is pretty clear.

                  Interested in AI ? www.idiap.ch
                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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