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    Unsolved QDialog content not being translated

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    • J
      Jayant last edited by

      I am trying to translate my application from English to German and vice versa. My application contains a mainwindow(with a menubar) and several mdi subwindows their own menu bars and there are several qdialogues, some of them are triggered via menu items within the main window and some of them are triggered via menu items within the mdi sub windows. The actual problem is that when I am triggering the translation the content of the mainwindow gets translated but no changes are reflected in any dialog that is triggered via menu item within the main window, same goes with those qdialogues that are triggered from the mdi subwindow menu items.

      J.Hilk 1 Reply Last reply Reply Quote 1
      • J.Hilk
        J.Hilk Moderators @Jayant last edited by J.Hilk

        hi @Jayant and welcome
        if you're using the default Qt Dialogs, and you want those translated as well, than I suggest loading, besides your own translation file, also the translation file from Qt Lib/Module.

        You'll find those under
        /Path/to/Qt/Version/(platform or compiler, for example)clang_64/translations

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

        Qt Needs YOUR vote: https://bugreports.qt.io/browse/QTQAINFRA-4121


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

        1 Reply Last reply Reply Quote 2
        • J
          Jayant last edited by

          Hi @J-Hilk I am not using default Qt Dialogs. I am using custom dialogs with extend the QDialog class and having a ui file.

          Pablo J. Rogina 1 Reply Last reply Reply Quote 0
          • Pablo J. Rogina
            Pablo J. Rogina @Jayant last edited by

            @Jayant you may want to override the languageChange() method in your custom dialog class. Something like this (pseudo-code):

            /**
             * Handles the event about language changed.
             * Retranslate all applicable strings.
             *
             */
            void
            YourDialog::languageChange()
            {
                ui->retranslateUi(this);
                this->setWindowTitle(tr(Confirm Action");
                // Change label of default Ok button to "Remove"
                ui->buttonBox->button(QDialogButtonBox::Ok)->setText(tr("Remove"));
            }
            

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            1 Reply Last reply Reply Quote 3
            • J
              Jayant last edited by

              Hi @Pablo-J-Rogina thanks for your reply, tried this but nothing happens.

              JonB 1 Reply Last reply Reply Quote 0
              • JonB
                JonB @Jayant last edited by

                @Jayant
                Sorry to butt in, but: are you using tr("...") like @Pablo-J-Rogina shows? In which case, I would have thought dialogs/menus/whatever is irrelevant, tr() is tr() and either works or does not regardless of where it happens to be called from?

                1 Reply Last reply Reply Quote 0
                • J
                  Jayant last edited by

                  @JonB
                  Yes ofcourse here's my code

                  void Dialog::changeEvent(QEvent *e){
                      if (e->type() == QEvent::LanguageChange) {
                          ui->retranslateUi(this);
                          setWindowTitle(tr("Test Modal Dialog"));
                          ui->label->setText(tr("this is a label"));
                      } else {
                          QWidget::changeEvent(e);
                      }
                  }
                  
                  JonB 1 Reply Last reply Reply Quote 0
                  • JonB
                    JonB @Jayant last edited by JonB

                    @Jayant
                    Well, start by verifying (that this code is hit and) what the tr("...")s here are actually returning, rather than setting text from them.

                    Also, I don't know, but after your code in the LanguageChange case, do you need to still call the base QWidget::changeEvent(e); to let it process? (EDIT OK, I see the examples in the docs.) And why are you calling QWidget::changeEvent() instead of QDialog::changeEvent()?

                    1 Reply Last reply Reply Quote 1
                    • J
                      Jayant last edited by

                      @JonB
                      Change QWidget::changeEvent(e) to QDialog::changeEvent(e) but nothing happens

                      JonB 1 Reply Last reply Reply Quote 0
                      • JonB
                        JonB @Jayant last edited by JonB

                        @Jayant
                        What are the tr("...")s returning?
                        And please just confirm your method is being hit, for all we know it might not be?

                        1 Reply Last reply Reply Quote 0
                        • J
                          Jayant last edited by

                          @JonB
                          You are right this function is not being hit.

                          JonB J.Hilk 2 Replies Last reply Reply Quote 0
                          • JonB
                            JonB @Jayant last edited by

                            @Jayant
                            Which is why I asked you that twice! Suggest always verify a function is being hit if you put code into it! :)

                            1 Reply Last reply Reply Quote 0
                            • J.Hilk
                              J.Hilk Moderators @Jayant last edited by J.Hilk

                              @Jayant that's obvious, as the Dialogs are created on the fly during run.

                              But if the translations exist, and the translation is loaded correctly, then the new created widget/dialog will also show the appropriate translated text.

                              You should show some more of your code, and double check that the translation really exists and is the correct one (assigned to the correct source code)

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

                              Qt Needs YOUR vote: https://bugreports.qt.io/browse/QTQAINFRA-4121


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

                              J 1 Reply Last reply Reply Quote 1
                              • J
                                Jayant @J.Hilk last edited by

                                @J-Hilk
                                Translation is loaded correctly because the mainwindow shows up the translated text but the dialog class doesn't. Following code translates the text

                                QCheckBox *checkBox = qobject_cast<QCheckBox *>(sender());
                                    MainWindow *window = mainWindowForCheckBoxMap[checkBox];
                                    if (!window) {
                                        QTranslator translator;
                                        translator.load(qmFileForCheckBoxMap[checkBox]);
                                        qApp->installTranslator(&translator);
                                
                                        window = new MainWindow;
                                        window->setPalette(colorForLanguage(checkBox->text()));
                                
                                        window->installEventFilter(this);
                                        mainWindowForCheckBoxMap.insert(checkBox, window);
                                    }
                                    window->setVisible(checkBox->isChecked());
                                
                                J.Hilk 1 Reply Last reply Reply Quote 0
                                • J.Hilk
                                  J.Hilk Moderators @Jayant last edited by

                                  @Jayant
                                  not quite what I had in mind,
                                  Your dialogs, and how they get their text

                                  Translation is loaded correctly because the mainwindow shows up the translated text but the dialog class doesn't. Following code translates the text

                                  I was rather asking if you checked that the translatable strings for your dialog where in your *qm file and correctly assigned.

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

                                  Qt Needs YOUR vote: https://bugreports.qt.io/browse/QTQAINFRA-4121


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

                                  1 Reply Last reply Reply Quote 0
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