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Restoring previous session of an application

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  • I Offline
    I Offline
    imrrk
    wrote on last edited by
    #10

    Hello friends,this is a code snippet from docs,and i have some doubts here,can anybody explains me what is the 3 statement doing

    @ QSettings settings("MySoft", "Star Runner");
    QColor color = palette().background().color();
    settings.setValue("DataPump/bgcolor", color);@

    regards
    imrrk

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    0
    • I Offline
      I Offline
      imrrk
      wrote on last edited by
      #11

      Hello friends,I have written the below code to save my settings using qsettings and when i again open it,i should get the same state,but the values are not saved,,please help me out in this regard..

      @#include <QtCore/QCoreApplication>
      #include <QtGui/QCloseEvent>
      MainWindow::MainWindow(QWidget *parent)
      : QMainWindow(parent), ui(new Ui::MainWindow)
      {
      ui->setupUi(this);

      // readSettings();
      // writeSettings();

      }

      MainWindow::~MainWindow()
      {
      delete ui;
      }void MainWindow::on_click_clicked()
      {
      ui->pushButton->setStyleSheet("color: red;");
      ui->pushButton_2->setStyleSheet("background-color: green;");
      ui->pushButton_3->setStyleSheet("background-color: yellow;");
      }
      void MainWindow::writeSettings()
      {
      QSettings settings("Moose Soft", "Clipper");

      settings.beginGroup("pushbutton");
      settings.setValue("size", size());
      settings.setValue("pos", pos());
      QColor r("red");
      r.name();
      settings.setValue("color",r.name());
      settings.endGroup();
      }

      void MainWindow::readSettings()
      {
      QSettings settings("Moose Soft", "Clipper");

      settings.beginGroup("pushbutton");
      resize(settings.value("size", QSize(400, 400)).toSize());
      move(settings.value("pos", QPoint(200, 200)).toPoint());
      QColor r(settings.value("color").toString());
      settings.endGroup();
      }
      void MainWindow::closeEvent(QCloseEvent * event)
      {
      if(on_exit_clicked())
      {
      writeSettings();
      event->accept();
      }
      else
      event->ignore();

      }

      bool MainWindow::on_exit_clicked()
      {
      writeSettings();
      exit(0);
      }@

      regards
      imrrk

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      0
      • I Offline
        I Offline
        imrrk
        wrote on last edited by
        #12

        Hello friends any help would be appreciated,from yesterday i am trying out with QSettings,and the above code tells how much i got from it,might be it is very less..but i want to learn further and need your help..

        regards
        imrrk

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        0
        • I Offline
          I Offline
          imrrk
          wrote on last edited by
          #13

          Hey friends,whether my code is correct,please guide me

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          0
          • G Offline
            G Offline
            giesbert
            wrote on last edited by
            #14

            Hi imrrk, it will not help to post each hour.

            Nokia Certified Qt Specialist.
            Programming Is Like Sex: One mistake and you have to support it for the rest of your life. (Michael Sinz)

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            • L Offline
              L Offline
              leon.anavi
              wrote on last edited by
              #15

              [quote author="imrrk" date="1306306497"]
              @#include <QtCore/QCoreApplication>
              #include <QtGui/QCloseEvent>
              MainWindow::MainWindow(QWidget *parent)
              : QMainWindow(parent), ui(new Ui::MainWindow)
              {
              ui->setupUi(this);

              // readSettings();
              // writeSettings();

              }

              MainWindow::~MainWindow()
              {
              delete ui;
              }void MainWindow::on_click_clicked()
              {
              ui->pushButton->setStyleSheet("color: red;");
              ui->pushButton_2->setStyleSheet("background-color: green;");
              ui->pushButton_3->setStyleSheet("background-color: yellow;");
              }
              void MainWindow::writeSettings()
              {
              QSettings settings("Moose Soft", "Clipper");

              settings.beginGroup("pushbutton");
              settings.setValue("size", size());
              settings.setValue("pos", pos());
              QColor r("red");
              r.name();
              settings.setValue("color",r.name());
              settings.endGroup();
              }

              void MainWindow::readSettings()
              {
              QSettings settings("Moose Soft", "Clipper");

              settings.beginGroup("pushbutton");
              resize(settings.value("size", QSize(400, 400)).toSize());
              move(settings.value("pos", QPoint(200, 200)).toPoint());
              QColor r(settings.value("color").toString());
              settings.endGroup();
              }
              void MainWindow::closeEvent(QCloseEvent * event)
              {
              if(on_exit_clicked())
              {
              writeSettings();
              event->accept();
              }
              else
              event->ignore();

              }

              bool MainWindow::on_exit_clicked()
              {
              writeSettings();
              exit(0);
              }@

              regards
              imrrk[/quote]

              Hi imrrk,

              Where do you call readSettings()? It is commented out at the constructor.

              Regards,
              Leon

              http://anavi.org/

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              • G Offline
                G Offline
                goetz
                wrote on last edited by
                #16

                Posting in this timeline:

                • 2 hours, 36 minutes ago
                • 2 hours, 19 minutes ago
                • 22 minutes ago

                Do you really expect being taken serious when crying like a childish kiddie? Come on, get serious!

                -And look at your code if it is ever able to do what you expect it to do!-

                -Or better: Use a debugger, set breakpoints and step through the code. You will find the error yourself then within seconds.-

                -Hopefully nobody will tell you the solution here, as it has no learning effect.-

                EDIT: wrong read of code, sorry

                http://www.catb.org/~esr/faqs/smart-questions.html

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                • I Offline
                  I Offline
                  imrrk
                  wrote on last edited by
                  #17

                  hello leon
                  when i call it in constructor,then also it wont work..

                  regards
                  imrrk

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                  • I Offline
                    I Offline
                    imrrk
                    wrote on last edited by
                    #18

                    Volker,I have tried so far and also i have pasted the code ,but according to you it might be very little as your r a qt geek..I just need a direction to proceed.

                    Regards
                    imrrk

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                    0
                    • G Offline
                      G Offline
                      goetz
                      wrote on last edited by
                      #19

                      I personally would do something with the color read from the settings....

                      http://www.catb.org/~esr/faqs/smart-questions.html

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                      • I Offline
                        I Offline
                        imrrk
                        wrote on last edited by
                        #20

                        Hi volker thanks for your reply,you mean to say that

                        @QColor r("red");
                        r.name();
                        settings.setValue("color",r.name());@

                        I should check these lines..?

                        regards
                        imrrk

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                        0
                        • G Offline
                          G Offline
                          goetz
                          wrote on last edited by
                          #21

                          no.

                          http://www.catb.org/~esr/faqs/smart-questions.html

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                          • I Offline
                            I Offline
                            imrrk
                            wrote on last edited by
                            #22

                            Then?which lines i have to check.

                            regards
                            imrrk

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                            0
                            • G Offline
                              G Offline
                              goetz
                              wrote on last edited by
                              #23

                              Think yourself. It's obvious....

                              http://www.catb.org/~esr/faqs/smart-questions.html

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                              0
                              • I Offline
                                I Offline
                                imrrk
                                wrote on last edited by
                                #24

                                ok.I think these lines then...
                                QColor r(settings.value("color").toString());

                                am I right?

                                regards
                                imrrk

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                                0
                                • G Offline
                                  G Offline
                                  goetz
                                  wrote on last edited by
                                  #25

                                  You're heading towards one of the hotspots...

                                  http://www.catb.org/~esr/faqs/smart-questions.html

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                                  • G Offline
                                    G Offline
                                    giesbert
                                    wrote on last edited by
                                    #26

                                    Hi imrrk,

                                    one suggestion:

                                    look at the docs of QColor and QSettings.
                                    Then you should find it.

                                    Regards

                                    Gerolf

                                    Nokia Certified Qt Specialist.
                                    Programming Is Like Sex: One mistake and you have to support it for the rest of your life. (Michael Sinz)

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                                    0
                                    • I Offline
                                      I Offline
                                      imrrk
                                      wrote on last edited by
                                      #27

                                      hello Volker,I am sorry,I didnt get your meaning..

                                      Hello gerolf, from yesterday i am reading the docs..
                                      this has been given

                                      @QSettings settings("MySoft", "Star Runner");
                                      QColor color = palette().background().color();
                                      settings.setValue("DataPump/bgcolor", color);@
                                      //here i didnt understand "DataPump/bgcolor"..

                                      regards
                                      imrrk

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                                      0
                                      • I Offline
                                        I Offline
                                        imrrk
                                        wrote on last edited by
                                        #28

                                        Hello Volker and gerolf,
                                        whether it should be done this way..

                                        QColor r(settings.value(“color”).toString(),ui->pushbutton->setcolor(r));

                                        regards
                                        imrrk

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                                        0
                                        • V Offline
                                          V Offline
                                          vinb
                                          wrote on last edited by
                                          #29

                                          Hi imrrk,
                                          You get a lot of help here, so please dont email me for something like this.

                                          1 Reply Last reply
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