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  4. [SOLVED] Read/write user settings
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[SOLVED] Read/write user settings

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

    Getting some troubles. Can you spot what is wrong here? I'm getting error: invalid use of incomplete type 'struct QDeclarativeContext' on line 12:

    main.cpp
    @#include <QtGui/QApplication>
    #include "qmlapplicationviewer.h"
    #include "settings.h"

    Q_DECL_EXPORT int main(int argc, char *argv[])
    {
    QScopedPointer<QApplication> app(createApplication(argc, argv));
    QScopedPointer<QmlApplicationViewer> viewer(QmlApplicationViewer::create());

    // Attaching QSettings wrapper and exposing it to our QML UI
    Settings* settings = new Settings(app.data());
    viewer->rootContext()->setContextProperty("Settings", settings);
    
    viewer->setMainQmlFile&#40;QLatin1String("qml/myApp/main.qml"&#41;&#41;;
    viewer->showExpanded();
    
    return app->exec&#40;&#41;;
    

    }@

    The only difference here with your code is that currently wizard generated code contains QmlApplicationViewer instance instead of QDeclarativeView (like in your code).

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    • L Offline
      L Offline
      lgeyer
      wrote on last edited by
      #6

      You haven't included <QtGui/QDeclarativeContext>.

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

        Thanks a lot, works now!

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        • L Offline
          L Offline
          lgeyer
          wrote on last edited by
          #8

          You're welcome. If the problem has been solved for you feel free to edit your initial post title and prepend "[Solved]" to it to indicate that there is a solution inside.

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

            Hey, is there some way to save image to settings? I have path to the image, how do I save it now to Settings?

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            • R Offline
              R Offline
              Rahul Das
              wrote on last edited by
              #10

              Try this :
              @settings.setValue("General/Pixmap", pixmap ); // pxmap is QPixmap@

              I haven't tried it yet, let me knw whats happening :)


              Declaration of (Platform) independence.

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              • S Offline
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                strekazoid
                wrote on last edited by
                #11

                Thanks. How do I construct QPixmap in QML?

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                • R Offline
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                  Rahul Das
                  wrote on last edited by
                  #12

                  "here":http://doc.qt.nokia.com/latest/qdeclarativeimageprovider.html


                  Declaration of (Platform) independence.

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                  • S Offline
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                    strekazoid
                    wrote on last edited by
                    #13

                    I'm still sort of confused. Is it possible to construct QPixmap in QML layer, or do I have to do something on C++ side as well?

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                    • R Offline
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                      Rahul Das
                      wrote on last edited by
                      #14

                      A request from QML for image/pixmap is handled by the 'Image Provider ' class, in simple words.

                      Yes you have to implement the Image provider in C++.


                      Declaration of (Platform) independence.

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                      • S Offline
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                        strekazoid
                        wrote on last edited by
                        #15

                        Ok, thanks, I'll try to play with this idea.

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                        • J Offline
                          J Offline
                          Jon Heron
                          wrote on last edited by
                          #16

                          Thank you for this excellent post!!
                          Cheers,
                          Jon

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                          • T Offline
                            T Offline
                            Traxx
                            wrote on last edited by
                            #17

                            Is the wrapper suppose to work out of the box and how do i make it work without qscopedpointer? Thank you

                            EDIT : Created a proper solution so anyone can answer to help future member

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