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[solved] Translation on the fly crashes

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #2

    Hi,

    What does a run trough the debugger tells you ?

    Are you sure all the pointers your are using are valid ?

    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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    • S Offline
      S Offline
      skwateur
      wrote on last edited by
      #3

      Debugger tells me segmentation fault.
      The error is related to the translation

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      • S Offline
        S Offline
        skwateur
        wrote on last edited by
        #4

        I can change the language through a setting window when I'm on the MainWindow but if I try while I'm on ui_identity wdget or some other widget it crashes...

        Really have no idea why.

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        • S Offline
          S Offline
          skwateur
          wrote on last edited by
          #5

          @qApp->installTranslator(translator);@ this line causes the segmentation fault apparently..

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

            Are you sure translator is valid ?

            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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            • S Offline
              S Offline
              skwateur
              wrote on last edited by
              #7

              @MainWindow::MainWindow(QWidget *parent) :
              QMainWindow(parent),
              ui(new Ui::MainWindow)
              {
              translator = new QTranslator(0);@

              I can translate the whole program while being on MainWindow. As soon as I go into a widget, I can no longer translate the program. It crashes :s

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

                That's in the MainWindow, how do you do it in your widget ?

                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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                • S Offline
                  S Offline
                  skwateur
                  wrote on last edited by
                  #9

                  I emit a signal from the widget which is then caught by the main window :
                  WIDGET :
                  @void ui_sys_settings::languageToEn()
                  {
                  emit toEnglish();
                  }

                  void ui_sys_settings::languageToFr()
                  {
                  emit toFrench();
                  }@

                  MAINWINDOW :
                  @connect(sysSettings,SIGNAL(toEnglish()),this,SLOT(changeToEnglish()));
                  connect(sysSettings,SIGNAL(toFrench()),this,SLOT(changeToFrench()));

                  void MainWindow::changeToFrench()
                  {
                  if(!translator->isEmpty())
                  qApp->removeTranslator(translator);
                  }

                  void MainWindow::changeToEnglish()
                  {
                  if(!translator->isEmpty())
                  qApp->removeTranslator(translator);

                  translator->load("dcl_en",QApplication::applicationDirPath());
                  qApp->installTranslator(translator);
                  

                  }@

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #10

                    Are you sure you need to re-install the translator ?

                    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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                    • S Offline
                      S Offline
                      skwateur
                      wrote on last edited by
                      #11

                      I only install it when I load the english language file. It is never installed otherwise

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                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #12

                        Strange...
                        Could you post/share a minimal compilable example that shows the problem ?

                        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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                        • S Offline
                          S Offline
                          skwateur
                          wrote on last edited by
                          #13

                          hmmm. post an example from my own program ?

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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #14

                            Rather the minimal code that reproduce the crash

                            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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                            • S Offline
                              S Offline
                              skwateur
                              wrote on last edited by
                              #15

                              Oh. The code that produce the crash is the code I have posted above.

                              If I take the instruction " qApp->installTranslator(translator);" off, then it doesn't crash. But I have nothing translated lol

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                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #16

                                Indeed, but with only pieces of code, I can't try to reproduce the crash.

                                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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                                • S Offline
                                  S Offline
                                  skwateur
                                  wrote on last edited by
                                  #17

                                  oh. Do you want the full code of the class ?

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                                  • S Offline
                                    S Offline
                                    skwateur
                                    wrote on last edited by
                                    #18

                                    Or I can send you the source files by email if you want. Maybe it could be easier for you to see what's wrong

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                                    • SGaistS Offline
                                      SGaistS Offline
                                      SGaist
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #19

                                      You can also use a service like "pastbin":http://pastebin.com/

                                      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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                                      • S Offline
                                        S Offline
                                        skwateur
                                        wrote on last edited by
                                        #20

                                        Should I paste all my code with pastbin SGalst ?

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                                        • SGaistS Offline
                                          SGaistS Offline
                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #21

                                          Only what is needed to build and trigger the crash

                                          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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