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QFileSystemWatcher's signal "directoryChanged" not emitted

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qfilesystemwatcwindows10
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  • VRoninV Offline
    VRoninV Offline
    VRonin
    wrote on last edited by VRonin
    #10

    Might be worth you looking directly at the source code, see if you can get it sorted yourself, and submit a patch.

    Did you try if other environments are affected too? Any linux distribution for example?

    "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
    ~Napoleon Bonaparte

    On a crusade to banish setIndexWidget() from the holy land of Qt

    S 7 Replies Last reply
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    • VRoninV VRonin

      Might be worth you looking directly at the source code, see if you can get it sorted yourself, and submit a patch.

      Did you try if other environments are affected too? Any linux distribution for example?

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      S Offline
      stephane78
      wrote on last edited by stephane78
      #11

      @VRonin I didn't try all the OS, but I can later, but under linux there isn't any difference between del and shift+del like under windows (because I tested that with del under win10 so when you put the folder in the trashcan, but did'nt test really with shift+del...I think with shift+del under win7 it is ok but not sure 100%
      I will do more test so....
      but I have already looked at the code of QFile SystemWatcher for one year because of the older bug and I don't really understand it....if I could understand it I would have made myself the correction.I will try again to look at the code of QFileSystemWatcher

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      • VRoninV VRonin

        Might be worth you looking directly at the source code, see if you can get it sorted yourself, and submit a patch.

        Did you try if other environments are affected too? Any linux distribution for example?

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        S Offline
        stephane78
        wrote on last edited by
        #12

        @VRonin OK there is the same problem under linux debian 8 with kde.when you move to thrash a subdirectory watched the signal directorychanged is not emitted and when you delete it with shift+del the signal is emitted...I have just tested now
        under windows 7 I can only delete with shift+del it doesn't allow me to delete with del so there isn't any problem
        I didn't test under mac os

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        • VRoninV VRonin

          Might be worth you looking directly at the source code, see if you can get it sorted yourself, and submit a patch.

          Did you try if other environments are affected too? Any linux distribution for example?

          S Offline
          S Offline
          stephane78
          wrote on last edited by stephane78
          #13

          @VRonin I have looked quickly at the source code of QFileSystemWatcher....(Qt5.6.2)
          first I don't find the definition of init() and initPollerEngine() of the class QFileSystemWatcherPrivate (qfilesystemwatcher_p.h) that are called in the constructor of QFileSystemWatcher and in the method addPaths.
          second, I have seen that there is a thread that derivate from QThread for windows, QWindowsFileSystemWatcherEngineThread, and the method run is redefinited l332 in qfilesystemwatcher_win.cpp,so that I understand it but don't understand all the details in the method run...

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          • VRoninV VRonin

            Might be worth you looking directly at the source code, see if you can get it sorted yourself, and submit a patch.

            Did you try if other environments are affected too? Any linux distribution for example?

            S Offline
            S Offline
            stephane78
            wrote on last edited by
            #14

            @VRonin I have seen where it emits the signal directoryChanged when the directory is deleted l.388 and l.385 I see if(fakeRemove||!fileInfo.exists()) but I don't understand the other things well.....

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            • VRoninV VRonin

              Might be worth you looking directly at the source code, see if you can get it sorted yourself, and submit a patch.

              Did you try if other environments are affected too? Any linux distribution for example?

              S Offline
              S Offline
              stephane78
              wrote on last edited by
              #15

              @VRonin I have looked too at the win32 functions findfirstchangenotification (used l.160) and find nextchangenotification (used l.364)....I think I must use a debug version of Qt to debug that because perhaps there is no change notification on the handle when we use a simple del to delete a directory ie send it to trashcan(without shift) ?

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              • VRoninV VRonin

                Might be worth you looking directly at the source code, see if you can get it sorted yourself, and submit a patch.

                Did you try if other environments are affected too? Any linux distribution for example?

                S Offline
                S Offline
                stephane78
                wrote on last edited by
                #16

                @VRonin or perhaps the error l.367 is another error than ERROR_ACCESS_DENIED that should be considered too and the that fakeRemove should be put to true too (or another boolean )

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                • VRoninV VRonin

                  Might be worth you looking directly at the source code, see if you can get it sorted yourself, and submit a patch.

                  Did you try if other environments are affected too? Any linux distribution for example?

                  S Offline
                  S Offline
                  stephane78
                  wrote on last edited by stephane78
                  #17

                  @VRonin what are the other errors of FindNextChangeNotification?didn't find them in the win32 msdn documentation.
                  And I don't really know how to do debug of Qt ? because it is in QtCore,so I suppose I must take the project and source of QtCore, but my test project use not only QtCore but QtGui and QtWidget too....

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                  • VRoninV Offline
                    VRoninV Offline
                    VRonin
                    wrote on last edited by
                    #18

                    I'll take a quick look and see if I can spot something in the source, no promises though

                    "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
                    ~Napoleon Bonaparte

                    On a crusade to banish setIndexWidget() from the holy land of Qt

                    S 2 Replies Last reply
                    0
                    • VRoninV VRonin

                      I'll take a quick look and see if I can spot something in the source, no promises though

                      S Offline
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                      stephane78
                      wrote on last edited by
                      #19

                      @VRonin Thank you vronin, do you know how I can debug QtCore (or corelib or io) with my test project synchro as executable with QtCreator and mingw-w64(the compiler of qt.io).I suppose I must take the source (single,the .zip) but don't really know how to do that.my project synchro uses core,gui and widget but I suppose I must open corelib or io as project in QtCreator

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                      • VRoninV VRonin

                        I'll take a quick look and see if I can spot something in the source, no promises though

                        S Offline
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                        stephane78
                        wrote on last edited by stephane78
                        #20

                        @VRonin do you know how to get the version 5.6.2 of qtbase from code.qt.io with git? (to build it in debug and try to debug corelib)

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                        • VRoninV Offline
                          VRoninV Offline
                          VRonin
                          wrote on last edited by
                          #21

                          Just clone the repository and check out the 5.6 branch

                          "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
                          ~Napoleon Bonaparte

                          On a crusade to banish setIndexWidget() from the holy land of Qt

                          S 6 Replies Last reply
                          1
                          • VRoninV VRonin

                            Just clone the repository and check out the 5.6 branch

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                            stephane78
                            wrote on last edited by
                            #22

                            @VRonin ok thanks vronin...

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                            • VRoninV VRonin

                              Just clone the repository and check out the 5.6 branch

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                              stephane78
                              wrote on last edited by
                              #23

                              @VRonin it is done.but to debug qfilesystemwatcher should I open corelib.pro in QtCreator (QtCore) and build it debug and put breakpoints and attach to my app synchro ?

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                              • VRoninV VRonin

                                Just clone the repository and check out the 5.6 branch

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                                stephane78
                                wrote on last edited by stephane78
                                #24

                                @VRonin I want to put a breakpoint l.364 of QFileSystemWatcher_win.cpp and watch error l365

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                                • VRoninV VRonin

                                  Just clone the repository and check out the 5.6 branch

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                                  S Offline
                                  stephane78
                                  wrote on last edited by
                                  #25

                                  @VRonin there is "attach to unstarted application" and "debug an external application" in Qtcreator\debug. is it possible to use one this option to debug QtCore (corelib) with my app synchro.exe ?

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                                  • VRoninV VRonin

                                    Just clone the repository and check out the 5.6 branch

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                                    S Offline
                                    stephane78
                                    wrote on last edited by
                                    #26

                                    @VRonin when building corelib I have this error ..\corelib\global\qt_pch.h:50:21: fatal error: qglobal.h: No such file or directory
                                    #include <qglobal.h>
                                    qglobal.h is in the directory but I think I lacks an environment variable ?

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                                    • VRoninV VRonin

                                      Just clone the repository and check out the 5.6 branch

                                      S Offline
                                      S Offline
                                      stephane78
                                      wrote on last edited by
                                      #27

                                      @VRonin OK I think I have found : I have copied the directory include of the source single (.zip) of 5.6.2 in the direcorty qtbase and I have put in my environment variable INCLUDE the path of directory include and reboot my windows...I think it will be ok

                                      S 1 Reply Last reply
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                                      • S stephane78

                                        @VRonin OK I think I have found : I have copied the directory include of the source single (.zip) of 5.6.2 in the direcorty qtbase and I have put in my environment variable INCLUDE the path of directory include and reboot my windows...I think it will be ok

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                                        stephane78
                                        wrote on last edited by
                                        #28

                                        I have put

                                        INCLUDEPATH +="../../include"
                                        INCLUDEPATH +="../../include/QtCore"

                                        int he corelib.pro but I have an error In file included from ..\corelib\animation\qabstractanimation.cpp:143:0:
                                        ..\corelib\animation\qabstractanimation_p.h:52:31: fatal error: private/qobject_p.h: No such file or directory
                                        #include <private/qobject_p.h>

                                        S 1 Reply Last reply
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                                        • S stephane78

                                          I have put

                                          INCLUDEPATH +="../../include"
                                          INCLUDEPATH +="../../include/QtCore"

                                          int he corelib.pro but I have an error In file included from ..\corelib\animation\qabstractanimation.cpp:143:0:
                                          ..\corelib\animation\qabstractanimation_p.h:52:31: fatal error: private/qobject_p.h: No such file or directory
                                          #include <private/qobject_p.h>

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                                          stephane78
                                          wrote on last edited by
                                          #29

                                          It think I will build the whole Qtbase as usually and then open the corelib.pro and put the directory of lib QtCored.dll as build directory and try to debug with my exe (synchro.exe)

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