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Settings and macOS. Impossible to create a ini file...

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  • F Offline
    F Offline
    Francky033
    wrote on last edited by
    #9

    No, in fact, it does not work anymore.
    I always get the message "No such file or directory" when I run the application in a terminal but the result of qsettins::status() is No::ERROR

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    0
    • F Offline
      F Offline
      Francky033
      wrote on last edited by
      #10

      In fact, my code is a bit more complicated. I'm calling a getSaveFileName box just before. Could this have an effect?

      QString file = QFileDialog::getSaveFileName(
      		this, tr("Save a configuration file..."), QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation),
      		"configuration file (*.ini)");
      
      QSettings::setPath(QSettings::IniFormat, QSettings::UserScope, file);
      
      QSettings settings(file, QSettings::IniFormat);
      
      settings.beginGroup("Data");
      
      settings.setValue("a1", 0.0);
      settings.setValue("a2", 0.0);
      
      settings.endGroup();
      
      return settings.status();
      
      jsulmJ 1 Reply Last reply
      0
      • F Francky033

        In fact, my code is a bit more complicated. I'm calling a getSaveFileName box just before. Could this have an effect?

        QString file = QFileDialog::getSaveFileName(
        		this, tr("Save a configuration file..."), QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation),
        		"configuration file (*.ini)");
        
        QSettings::setPath(QSettings::IniFormat, QSettings::UserScope, file);
        
        QSettings settings(file, QSettings::IniFormat);
        
        settings.beginGroup("Data");
        
        settings.setValue("a1", 0.0);
        settings.setValue("a2", 0.0);
        
        settings.endGroup();
        
        return settings.status();
        
        jsulmJ Offline
        jsulmJ Offline
        jsulm
        Lifetime Qt Champion
        wrote on last edited by
        #11

        @Francky033 said in Settings and macOS. Impossible to create a ini file...:

        QSettings::setPath(QSettings::IniFormat, QSettings::UserScope, file);

        Shouldn't you actually provide a path to a folder, not to a file? So, using setPath you set the folder where ini files should be stored, then if you create a QSettings instance you pass the name of an ini file which then stored in the folder specified by setPath.

        https://forum.qt.io/topic/113070/qt-code-of-conduct

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        • F Offline
          F Offline
          Francky033
          wrote on last edited by
          #12

          I modified my code this way but it still doesn't work...

          QString file = QFileDialog::getSaveFileName(
          		this, tr("Save a configuration file..."), QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation), "configuration file (*.ini)");
          
          QString d = file.left(file .lastIndexOf("/"));
          
          QSettings::setPath(QSettings::IniFormat, QSettings::UserScope, d);
          
          QSettings settings(file, QSettings::IniFormat);
          
          settings.beginGroup("Data");
          
          settings.setValue("a1", 0.0);
          settings.setValue("a2", 0.0);
          
          settings.endGroup();
          
          return settings.status();
          
          jsulmJ 1 Reply Last reply
          0
          • F Francky033

            I modified my code this way but it still doesn't work...

            QString file = QFileDialog::getSaveFileName(
            		this, tr("Save a configuration file..."), QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation), "configuration file (*.ini)");
            
            QString d = file.left(file .lastIndexOf("/"));
            
            QSettings::setPath(QSettings::IniFormat, QSettings::UserScope, d);
            
            QSettings settings(file, QSettings::IniFormat);
            
            settings.beginGroup("Data");
            
            settings.setValue("a1", 0.0);
            settings.setValue("a2", 0.0);
            
            settings.endGroup();
            
            return settings.status();
            
            jsulmJ Offline
            jsulmJ Offline
            jsulm
            Lifetime Qt Champion
            wrote on last edited by
            #13

            @Francky033 said in Settings and macOS. Impossible to create a ini file...:

            QSettings settings(file, QSettings::IniFormat);

            file should be only file name here.

            "QString d = file.left(file .lastIndexOf("/"));" - use QFileInfo::absolutePath() to get the folder without file name.

            https://forum.qt.io/topic/113070/qt-code-of-conduct

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            • F Offline
              F Offline
              Francky033
              wrote on last edited by
              #14

              jsulm, I modified my code this way, but no effect

              QString file = QFileDialog::getSaveFileName(
              		this, tr("Save a configuration file..."), QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation), "configuration file (*.ini)");
              
              QFileInfo f(file);
              
              QString d = f.absoluteFilePath();
              QString name = f.fileName();
              
              QSettings::setPath(QSettings::IniFormat, QSettings::UserScope, d);
              
              QSettings settings(f, QSettings::IniFormat);
              
              settings.beginGroup("Data");
              
              settings.setValue("a1", 0.0);
              settings.setValue("a2", 0.0);
              
              settings.endGroup();
              
              return settings.status();
              
              1 Reply Last reply
              0
              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #15

                But why are you using setPath at all ?

                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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                0
                • F Offline
                  F Offline
                  Francky033
                  wrote on last edited by
                  #16

                  I removed the setPath and I still have the same result. When I start the program from qtcreator, everything works. But it does not work anymore when the program is installed on the OS.
                  This seems to me to be a permissions problem. But how to solve this?

                  artwawA 1 Reply Last reply
                  0
                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #17

                    Did you used macdeployqt before running it outside of Qt ?

                    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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                    0
                    • F Francky033

                      I removed the setPath and I still have the same result. When I start the program from qtcreator, everything works. But it does not work anymore when the program is installed on the OS.
                      This seems to me to be a permissions problem. But how to solve this?

                      artwawA Offline
                      artwawA Offline
                      artwaw
                      wrote on last edited by
                      #18

                      @Francky033 If it is permission problem OS should ask user upon the startup if read/write permission to folder should be granted (like it happens every time I deploy my software).
                      It's ok if you run it from QtCreator as child process of QtCreator is allowed standard access to the home tree.

                      For more information please re-read.

                      Kind Regards,
                      Artur

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                      0
                      • F Offline
                        F Offline
                        Francky033
                        wrote on last edited by
                        #19

                        SGaist : Yes !

                        artwaw : But if it is not a problem of permissions, where can the problem come from? What also surprises me is the message "No such file or directory" that appears in the log when the settings variable is created and the NoERROR as result of settings::status() at the end of the record.

                        artwawA 1 Reply Last reply
                        0
                        • J.HilkJ Offline
                          J.HilkJ Offline
                          J.Hilk
                          Moderators
                          wrote on last edited by J.Hilk
                          #20

                          I believe you've been let a stray, this code is taken from my working application:

                          QString appDataPath = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation) +QString("/");
                          
                          QString settingsPath = appDataPath + QString("data/Settings.ini");
                          
                          //And used this way
                          auto settings = new QSettings(settingsPath(), QSettings::IniFormat);
                          

                          this results in a directory path

                          qDebug() << Q_FUNC_INFO << settings->fileName();
                          

                          "/Users/jonashilk/Library/Application Support/CompanyName/Applicationname/data/Settings.ini"


                          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.

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                          3
                          • F Francky033

                            SGaist : Yes !

                            artwaw : But if it is not a problem of permissions, where can the problem come from? What also surprises me is the message "No such file or directory" that appears in the log when the settings variable is created and the NoERROR as result of settings::status() at the end of the record.

                            artwawA Offline
                            artwawA Offline
                            artwaw
                            wrote on last edited by
                            #21

                            @Francky033 I don't have idea what's happening in your system. I'd try to debug the problem by hardcoding known path to the file though, like /Users/[username]/settings.ini or something.

                            For more information please re-read.

                            Kind Regards,
                            Artur

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                            0
                            • F Offline
                              F Offline
                              Francky033
                              wrote on last edited by
                              #22

                              Hello everyone and thanks for your help!

                              I finally discovered the problem: I had to put a settings.sync() before the settings.status();

                              While the sync function doesn't seem to have any effect under Windows, Android and linux, it seems necessary to use it under macOS.

                              The documentation is a bit vague on this: "This function is called automatically from QSettings's destructor and by the event loop at regular intervals, so you normally don't need to call it yourself."

                              My problem is solved and I hope this can give a clue to people in the same situation as me. Thanks to the Qt forum and its members!

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                              0
                              • F Offline
                                F Offline
                                Francky033
                                wrote on last edited by
                                #23

                                Hello,

                                I am again confronted with the same problem. Everything was working fine and the next day, no directory was accessible for saving using this piece of code!
                                When the save box opens, I noticed that all the elements in the directory (including .ini files) are grayed out...
                                What I don't understand is the extremely capricious result of this function (which is so simple). One day it works, the next day it doesn't...

                                Is it a bug in Qt?

                                Have a nice day!

                                Francky033

                                1 Reply Last reply
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                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #24

                                  Did you restart a build from scratch ?
                                  Re-run macdeployqt on your app bundle ?

                                  Apple has introduced several security feature with regard to accessing the user environnement which might trigger here.

                                  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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