Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Special Interest Groups
  3. Independent Developers
  4. Qt Commercial License Terms, Independent Developers
Forum Update on Monday, May 27th 2025

Qt Commercial License Terms, Independent Developers

Scheduled Pinned Locked Moved Unsolved Independent Developers
licensinglicenseindependentdevelopers
35 Posts 16 Posters 15.9k Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • C Offline
    C Offline
    Cheng shi hua
    wrote on 4 Dec 2019, 11:38 last edited by
    #26

    I am an independent game author. If I use LGPL, develop a library that uses QML and dynamically links QT, and then publish it to steam, do I need to pay QT or open source?

    J 1 Reply Last reply 4 Dec 2019, 11:44
    0
    • C Cheng shi hua
      4 Dec 2019, 11:38

      I am an independent game author. If I use LGPL, develop a library that uses QML and dynamically links QT, and then publish it to steam, do I need to pay QT or open source?

      J Offline
      J Offline
      jsulm
      Lifetime Qt Champion
      wrote on 4 Dec 2019, 11:44 last edited by
      #27

      @Cheng-shi-hua said in Qt Commercial License Terms, Independent Developers:

      do I need to pay QT or open source?

      No, as long as you can fulfill LGPL3 you do not need commercial license and do not have to open your source code.
      LGPL3 requires you to provide users the possibility to replace Qt libraries with their own versions. This usually requires you to provide object files (.o), so users can relink. And it is not possible when using static Qt libraries!

      Keep in mind people here (me included) are not lawyers!

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

      1 Reply Last reply
      1
      • C Offline
        C Offline
        Cheng shi hua
        wrote on 4 Dec 2019, 12:34 last edited by
        #28

        No QT official came out to clarify? This matter is important

        J 1 Reply Last reply 4 Dec 2019, 12:36
        0
        • C Cheng shi hua
          4 Dec 2019, 12:34

          No QT official came out to clarify? This matter is important

          J Offline
          J Offline
          jsulm
          Lifetime Qt Champion
          wrote on 4 Dec 2019, 12:36 last edited by
          #29

          @Cheng-shi-hua This forum is for Qt users and not "Qt officials". If you want an answer from Qt officials then pleas ask Qt Company.

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

          1 Reply Last reply
          4
          • C Offline
            C Offline
            Cheng shi hua
            wrote on 4 Dec 2019, 13:15 last edited by
            #30

            This is the case, thank you very much. Since it is a community, you can advertise here when I develop a game :)

            1 Reply Last reply
            0
            • L Offline
              L Offline
              LarryCox
              Banned
              wrote on 15 Oct 2022, 04:14 last edited by
              #31
              This post is deleted!
              1 Reply Last reply
              0
              • T Offline
                T Offline
                ThomasGrace123
                Banned
                wrote on 27 Oct 2022, 09:45 last edited by
                #32
                This post is deleted!
                V 1 Reply Last reply 5 Nov 2022, 09:49
                0
                • T ThomasGrace123
                  27 Oct 2022, 09:45

                  This post is deleted!

                  V Offline
                  V Offline
                  vosob80267
                  Banned
                  wrote on 5 Nov 2022, 09:49 last edited by vosob80267 11 May 2022, 09:49
                  #33
                  This post is deleted!
                  1 Reply Last reply
                  0
                  • J Offline
                    J Offline
                    JamesPalmer
                    Banned
                    wrote on 5 Nov 2022, 13:38 last edited by
                    #34
                    This post is deleted!
                    1 Reply Last reply
                    0
                    • B Offline
                      B Offline
                      Betty R. Harris
                      Banned
                      wrote on 7 Nov 2022, 10:33 last edited by Betty R. Harris 11 Jul 2022, 10:35
                      #35
                      This post is deleted!
                      1 Reply Last reply
                      0

                      • Login

                      • Login or register to search.
                      • First post
                        Last post
                      0
                      • Categories
                      • Recent
                      • Tags
                      • Popular
                      • Users
                      • Groups
                      • Search
                      • Get Qt Extensions
                      • Unsolved