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Bug in Qt 5.12 drag n'drop ?

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qat 5.12 drag ndrop
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  • S Offline
    S Offline
    SGaist
    Lifetime Qt Champion
    wrote on 14 Dec 2018, 22:36 last edited by
    #7

    "not that different" can be a big can of worm ;)

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

    S C 2 Replies Last reply 14 Dec 2018, 22:39
    1
    • S SGaist
      14 Dec 2018, 22:36

      "not that different" can be a big can of worm ;)

      S Offline
      S Offline
      skylendar
      wrote on 14 Dec 2018, 22:39 last edited by
      #8

      @SGaist

      wait, i'm testing again..

      S 1 Reply Last reply 14 Dec 2018, 22:42
      0
      • S skylendar
        14 Dec 2018, 22:39

        @SGaist

        wait, i'm testing again..

        S Offline
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        skylendar
        wrote on 14 Dec 2018, 22:42 last edited by skylendar
        #9

        @skylendar

        Ah, "robot" is based on a QGraphicsObject, which receives QGraphicsSceneDragDropEvent , whereas my app is based on a mere QWidget, which receives a QDragEnterEvent

        S 1 Reply Last reply 14 Dec 2018, 22:44
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        • S skylendar
          14 Dec 2018, 22:42

          @skylendar

          Ah, "robot" is based on a QGraphicsObject, which receives QGraphicsSceneDragDropEvent , whereas my app is based on a mere QWidget, which receives a QDragEnterEvent

          S Offline
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          skylendar
          wrote on 14 Dec 2018, 22:44 last edited by
          #10

          @skylendar

          And remember, my code works fine with qt5.11.x, and not with qt5.12.0

          1 Reply Last reply
          0
          • C Offline
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            Christian Ehrlicher
            Lifetime Qt Champion
            wrote on 15 Dec 2018, 08:47 last edited by
            #11

            Please provide a example - otherwise I don't see how we can spot the problem...

            Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
            Visit the Qt Academy at https://academy.qt.io/catalog

            S 1 Reply Last reply 15 Dec 2018, 16:06
            1
            • C Christian Ehrlicher
              15 Dec 2018, 08:47

              Please provide a example - otherwise I don't see how we can spot the problem...

              S Offline
              S Offline
              skylendar
              wrote on 15 Dec 2018, 16:06 last edited by
              #12

              @Christian-Ehrlicher

              Ok, in that case, get my open source app:
              https://sourceforge.net/projects/skylendar/
              and compile it with qt5.12.0
              When compiled and running, drag the "Now" Dataset (on the left column) onto the window named "Standard wheel".

              Then, the pointer becomes a barred red circle, instead of a black hand for dropping, i.e. dropping is impossible.

              When compiled with 5.11 apparently nothing happens because the standard wheel already uses "Now", but it works...

              1 Reply Last reply
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              • C Offline
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                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on 15 Dec 2018, 16:28 last edited by
                #13

                I tried to run your app but I won't let something run as root on my system. Please provide a minimal, compilable example to reproduce the issue.

                Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                Visit the Qt Academy at https://academy.qt.io/catalog

                A 1 Reply Last reply 15 Dec 2018, 16:30
                1
                • C Christian Ehrlicher
                  15 Dec 2018, 16:28

                  I tried to run your app but I won't let something run as root on my system. Please provide a minimal, compilable example to reproduce the issue.

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                  aha_1980
                  Lifetime Qt Champion
                  wrote on 15 Dec 2018, 16:30 last edited by
                  #14

                  @Christian-Ehrlicher

                  I tried to run your app but I won't let something run as root on my system.

                  probably the elevated rights are part of the problem?

                  Qt has to stay free or it will die.

                  C S 3 Replies Last reply 15 Dec 2018, 16:40
                  0
                  • A aha_1980
                    15 Dec 2018, 16:30

                    @Christian-Ehrlicher

                    I tried to run your app but I won't let something run as root on my system.

                    probably the elevated rights are part of the problem?

                    C Offline
                    C Offline
                    Christian Ehrlicher
                    Lifetime Qt Champion
                    wrote on 15 Dec 2018, 16:40 last edited by
                    #15

                    @aha_1980 said in Bug in Qt 5.12 drag n'drop ?:

                    probably the elevated rights are part of the problem?

                    Don't think so - it's using a database and the app which creates the schema etc. wants admin rights. After this it looks like the normal application can run without admin rights but did not came that far.

                    Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                    Visit the Qt Academy at https://academy.qt.io/catalog

                    1 Reply Last reply
                    0
                    • A aha_1980
                      15 Dec 2018, 16:30

                      @Christian-Ehrlicher

                      I tried to run your app but I won't let something run as root on my system.

                      probably the elevated rights are part of the problem?

                      S Offline
                      S Offline
                      skylendar
                      wrote on 15 Dec 2018, 16:44 last edited by
                      #16

                      @aha_1980

                      No, only skydmin needs admin right in order to install the db. skylendar runs as a normal user.

                      1 Reply Last reply
                      0
                      • A aha_1980
                        15 Dec 2018, 16:30

                        @Christian-Ehrlicher

                        I tried to run your app but I won't let something run as root on my system.

                        probably the elevated rights are part of the problem?

                        S Offline
                        S Offline
                        skylendar
                        wrote on 15 Dec 2018, 16:46 last edited by
                        #17

                        @aha_1980

                        If you really are scared to run skydmin as root, I can tell you how to install the db as the postgres non-root user.

                        A 1 Reply Last reply 15 Dec 2018, 16:54
                        0
                        • S skylendar
                          15 Dec 2018, 16:46

                          @aha_1980

                          If you really are scared to run skydmin as root, I can tell you how to install the db as the postgres non-root user.

                          A Offline
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                          aha_1980
                          Lifetime Qt Champion
                          wrote on 15 Dec 2018, 16:54 last edited by
                          #18

                          @skylendar Thanks, but I don't think I'll debug your program ;)

                          I have too much of my own problems

                          Qt has to stay free or it will die.

                          S 2 Replies Last reply 15 Dec 2018, 17:00
                          0
                          • A aha_1980
                            15 Dec 2018, 16:54

                            @skylendar Thanks, but I don't think I'll debug your program ;)

                            I have too much of my own problems

                            S Offline
                            S Offline
                            skylendar
                            wrote on 15 Dec 2018, 17:00 last edited by
                            #19

                            @aha_1980

                            I don't ask you to debug my app, just run it.

                            1 Reply Last reply
                            0
                            • A aha_1980
                              15 Dec 2018, 16:54

                              @skylendar Thanks, but I don't think I'll debug your program ;)

                              I have too much of my own problems

                              S Offline
                              S Offline
                              skylendar
                              wrote on 15 Dec 2018, 17:05 last edited by
                              #20

                              @aha_1980

                              In addition, I don't want anything. I just signal a possible bug. That's all.

                              A 1 Reply Last reply 15 Dec 2018, 17:28
                              0
                              • S skylendar
                                15 Dec 2018, 17:05

                                @aha_1980

                                In addition, I don't want anything. I just signal a possible bug. That's all.

                                A Offline
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                                aha_1980
                                Lifetime Qt Champion
                                wrote on 15 Dec 2018, 17:28 last edited by aha_1980
                                #21

                                @skylendar thats why we need a simple program, trimmed down to the actual problem.

                                Otherwise its hard to track down where the bug is. Until now it is not even proven that Qt is guilty.

                                Qt has to stay free or it will die.

                                S 2 Replies Last reply 15 Dec 2018, 17:50
                                1
                                • A aha_1980
                                  15 Dec 2018, 17:28

                                  @skylendar thats why we need a simple program, trimmed down to the actual problem.

                                  Otherwise its hard to track down where the bug is. Until now it is not even proven that Qt is guilty.

                                  S Offline
                                  S Offline
                                  skylendar
                                  wrote on 15 Dec 2018, 17:50 last edited by
                                  #22

                                  @aha_1980

                                  This is not a matter of guilt or not. We are not in an american thriller.
                                  And besides, how do you explain that my app works fine with qt5.11 and below, but not with qt5.12 ?

                                  1 Reply Last reply
                                  0
                                  • A aha_1980
                                    15 Dec 2018, 17:28

                                    @skylendar thats why we need a simple program, trimmed down to the actual problem.

                                    Otherwise its hard to track down where the bug is. Until now it is not even proven that Qt is guilty.

                                    S Offline
                                    S Offline
                                    skylendar
                                    wrote on 15 Dec 2018, 18:02 last edited by
                                    #23

                                    @aha_1980

                                    And you forget something: Qt is actually a commercial program, and most of you, if not all, are paid for debugging it. Why should I work for you for free ?

                                    M J 2 Replies Last reply 15 Dec 2018, 18:22
                                    -2
                                    • S skylendar
                                      15 Dec 2018, 18:02

                                      @aha_1980

                                      And you forget something: Qt is actually a commercial program, and most of you, if not all, are paid for debugging it. Why should I work for you for free ?

                                      M Offline
                                      M Offline
                                      mrjj
                                      Lifetime Qt Champion
                                      wrote on 15 Dec 2018, 18:22 last edited by mrjj
                                      #24

                                      @skylendar

                                      • Qt is actually a commercial program, and most of you, if not all, are paid for debugging it

                                      Actually this is a user forums and no one here is paid anything to help :)
                                      We are not employees, but ordinary users of Qt.

                                      Anyway, i tried some of old drag drop sample with Qt 5.12 and
                                      they seems to work. At least on windows.

                                      1 Reply Last reply
                                      5
                                      • S skylendar
                                        15 Dec 2018, 18:02

                                        @aha_1980

                                        And you forget something: Qt is actually a commercial program, and most of you, if not all, are paid for debugging it. Why should I work for you for free ?

                                        J Offline
                                        J Offline
                                        J.Hilk
                                        Moderators
                                        wrote on 16 Dec 2018, 08:27 last edited by
                                        #25

                                        @skylendar said in Bug in Qt 5.12 drag n'drop ?:

                                        @aha_1980

                                        And you forget something: Qt is actually a commercial program, and most of you, if not all, are paid for debugging it. Why should I work for you for free ?

                                        If you happen to own a commercial license you should contact the customer support they may be able to help you more directly.

                                        However they also will ask for a minimal compileable project, if your current project is considerably too large.
                                        Alternatively there is also the option of paid consulting either from the QtCompany directly or other companies, like for example KDAB


                                        Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


                                        Q: What's that?
                                        A: It's blue light.
                                        Q: What does it do?
                                        A: It turns blue.

                                        S 1 Reply Last reply 16 Dec 2018, 14:04
                                        2
                                        • J J.Hilk
                                          16 Dec 2018, 08:27

                                          @skylendar said in Bug in Qt 5.12 drag n'drop ?:

                                          @aha_1980

                                          And you forget something: Qt is actually a commercial program, and most of you, if not all, are paid for debugging it. Why should I work for you for free ?

                                          If you happen to own a commercial license you should contact the customer support they may be able to help you more directly.

                                          However they also will ask for a minimal compileable project, if your current project is considerably too large.
                                          Alternatively there is also the option of paid consulting either from the QtCompany directly or other companies, like for example KDAB

                                          S Offline
                                          S Offline
                                          skylendar
                                          wrote on 16 Dec 2018, 14:04 last edited by
                                          #26

                                          @J.Hilk

                                          Who has a linux dnd program which can be tested ?

                                          M 1 Reply Last reply 16 Dec 2018, 16:01
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