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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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  • 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?

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    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.

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    • 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
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      • 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
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        • 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.

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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
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          • 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

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            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
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            • 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

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              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
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              • 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.

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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.

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                  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 ?

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                  • 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 ?

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                      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
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                      • 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
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                          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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                          • S skylendar
                            16 Dec 2018, 14:04

                            @J.Hilk

                            Who has a linux dnd program which can be tested ?

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                            mrjj
                            Lifetime Qt Champion
                            wrote on 16 Dec 2018, 16:01 last edited by
                            #27

                            @skylendar
                            Hi
                            What about test with the sample that comes with Qt ?
                            http://doc.qt.io/qt-5/dnd.html#examples
                            There are often directly available in Creator.

                            S 1 Reply Last reply 17 Dec 2018, 15:41
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                            • M mrjj
                              16 Dec 2018, 16:01

                              @skylendar
                              Hi
                              What about test with the sample that comes with Qt ?
                              http://doc.qt.io/qt-5/dnd.html#examples
                              There are often directly available in Creator.

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                              skylendar
                              wrote on 17 Dec 2018, 15:41 last edited by
                              #28

                              @mrjj

                              Found the puzzle in the examples. It works, but in my case the draggable widget is placed in a QTreeWidget, not just an ordinary QWidget.

                              M 1 Reply Last reply 17 Dec 2018, 15:59
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                              • S skylendar
                                17 Dec 2018, 15:41

                                @mrjj

                                Found the puzzle in the examples. It works, but in my case the draggable widget is placed in a QTreeWidget, not just an ordinary QWidget.

                                M Offline
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                                mrjj
                                Lifetime Qt Champion
                                wrote on 17 Dec 2018, 15:59 last edited by
                                #29

                                Hi
                                well it its almost the same unless you used
                                QStandardItemModel::dropMimeData()
                                or something like that.

                                S 1 Reply Last reply 17 Dec 2018, 16:44
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                                • M mrjj
                                  17 Dec 2018, 15:59

                                  Hi
                                  well it its almost the same unless you used
                                  QStandardItemModel::dropMimeData()
                                  or something like that.

                                  S Offline
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                                  skylendar
                                  wrote on 17 Dec 2018, 16:44 last edited by skylendar
                                  #30

                                  @mrjj

                                  I can drag from my QTreeWidget, but I can't drop anymore my icon onto my QWidget target, whereas it worked in the previous version of qt (5.11).

                                  Everything seems ok, but the dropEvent() method of my QWidget isn't activated (setAcceptDrop() is set to true, of course)

                                  M 1 Reply Last reply 17 Dec 2018, 16:52
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                                  • S skylendar
                                    17 Dec 2018, 16:44

                                    @mrjj

                                    I can drag from my QTreeWidget, but I can't drop anymore my icon onto my QWidget target, whereas it worked in the previous version of qt (5.11).

                                    Everything seems ok, but the dropEvent() method of my QWidget isn't activated (setAcceptDrop() is set to true, of course)

                                    M Offline
                                    M Offline
                                    mrjj
                                    Lifetime Qt Champion
                                    wrote on 17 Dec 2018, 16:52 last edited by
                                    #31

                                    @skylendar
                                    Check the
                                    http://doc.qt.io/qt-5/qtwidgets-draganddrop-puzzle-example.html
                                    as it drops from ListWidget to Widget.

                                    S 1 Reply Last reply 17 Dec 2018, 16:57
                                    0
                                    • M mrjj
                                      17 Dec 2018, 16:52

                                      @skylendar
                                      Check the
                                      http://doc.qt.io/qt-5/qtwidgets-draganddrop-puzzle-example.html
                                      as it drops from ListWidget to Widget.

                                      S Offline
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                                      skylendar
                                      wrote on 17 Dec 2018, 16:57 last edited by
                                      #32

                                      @mrjj

                                      But I already did that... The codes are very similar, but in my case it doesn't work anymore

                                      M 1 Reply Last reply 17 Dec 2018, 17:02
                                      0
                                      • C Offline
                                        C Offline
                                        Christian Ehrlicher
                                        Lifetime Qt Champion
                                        wrote on 17 Dec 2018, 17:01 last edited by
                                        #33

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

                                        The codes are very similar

                                        So you should modify one of them until you hit or fix the problem...

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                                        S 1 Reply Last reply 17 Dec 2018, 18:49
                                        0
                                        • S skylendar
                                          17 Dec 2018, 16:57

                                          @mrjj

                                          But I already did that... The codes are very similar, but in my case it doesn't work anymore

                                          M Offline
                                          M Offline
                                          mrjj
                                          Lifetime Qt Champion
                                          wrote on 17 Dec 2018, 17:02 last edited by
                                          #34

                                          @skylendar
                                          Ok but it does not seems Qt related then as those sample didn't change between
                                          5.11 and 5.12 so if they still work it seems unlikely something broke on Qt level.

                                          S 1 Reply Last reply 17 Dec 2018, 18:48
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