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From QLineEdit Dialog to MainWindows

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  • A aim0d

    @jsulm It worked, thanks!
    Just a quick question: I'm actually have more QLineEdit value to transfer from Dialog to MW;
    I tried via getValuePar():

    dialog.cpp

    QString parametri::getValuePar()
    {
        QString pmFV =  ui->pmFV->text();    
       QString glmF = ui->glmF->text();    
         QString icpF =ui->icpF->text();    
         QString gamEP =ui->gamEP->text();    
          QString icpEP = ui->icpEP->text();
        return pmFV + glmF;
    }
    
    QString parametri::getResult()
    {
        return getValuePar();
    }
    

    MainWindow,cpp

    void MainWindow::on_parametri_clicked()
    {
        class parametri pd;
        pd.exec();
        QString value = pd.getResult();
        qDebug() << value;
    }
    

    When I run the project It opens the MainWindow but crashed when I click the button to open the Dialog

    Christian EhrlicherC Online
    Christian EhrlicherC Online
    Christian Ehrlicher
    Lifetime Qt Champion
    wrote on last edited by
    #5

    @aim0d said in From QLineEdit Dialog to MainWindows:

    When I run the project It opens the MainWindow but crashed when I click the button to open the Dialog

    What do you expect? I mean - what should this do:

    QString parametri::getValuePar()
    {
        ui->pmFV->text();
        ui->glmF->text();
        ui->icpF->text();
        ui->gamEP->text();
    }
    

    Please learn c++ basics.

    Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
    Visit the Qt Academy at https://academy.qt.io/catalog

    A 1 Reply Last reply
    0
    • A aim0d

      @jsulm It worked, thanks!
      Just a quick question: I'm actually have more QLineEdit value to transfer from Dialog to MW;
      I tried via getValuePar():

      dialog.cpp

      QString parametri::getValuePar()
      {
          QString pmFV =  ui->pmFV->text();    
         QString glmF = ui->glmF->text();    
           QString icpF =ui->icpF->text();    
           QString gamEP =ui->gamEP->text();    
            QString icpEP = ui->icpEP->text();
          return pmFV + glmF;
      }
      
      QString parametri::getResult()
      {
          return getValuePar();
      }
      

      MainWindow,cpp

      void MainWindow::on_parametri_clicked()
      {
          class parametri pd;
          pd.exec();
          QString value = pd.getResult();
          qDebug() << value;
      }
      

      When I run the project It opens the MainWindow but crashed when I click the button to open the Dialog

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #6

      @aim0d said in From QLineEdit Dialog to MainWindows:

      I'm actually have more QLineEdit value to transfer from Dialog to MW

      Either create a getter method for each of them or create a structure where you put all these strings and implement a getter method which returns this struct.

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

      A 1 Reply Last reply
      2
      • A aim0d

        @jsulm It worked, thanks!
        Just a quick question: I'm actually have more QLineEdit value to transfer from Dialog to MW;
        I tried via getValuePar():

        dialog.cpp

        QString parametri::getValuePar()
        {
            QString pmFV =  ui->pmFV->text();    
           QString glmF = ui->glmF->text();    
             QString icpF =ui->icpF->text();    
             QString gamEP =ui->gamEP->text();    
              QString icpEP = ui->icpEP->text();
            return pmFV + glmF;
        }
        
        QString parametri::getResult()
        {
            return getValuePar();
        }
        

        MainWindow,cpp

        void MainWindow::on_parametri_clicked()
        {
            class parametri pd;
            pd.exec();
            QString value = pd.getResult();
            qDebug() << value;
        }
        

        When I run the project It opens the MainWindow but crashed when I click the button to open the Dialog

        J.HilkJ Offline
        J.HilkJ Offline
        J.Hilk
        Moderators
        wrote on last edited by
        #7

        @aim0d said in From QLineEdit Dialog to MainWindows:

        but crashed when I click the button to open the Dialog

        I think it crashes here QString value = pd.getResult();

        because your non void function has no return statement. You should have at least a warning about this in QtCreator.


        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.

        A 1 Reply Last reply
        3
        • Christian EhrlicherC Christian Ehrlicher

          @aim0d said in From QLineEdit Dialog to MainWindows:

          When I run the project It opens the MainWindow but crashed when I click the button to open the Dialog

          What do you expect? I mean - what should this do:

          QString parametri::getValuePar()
          {
              ui->pmFV->text();
              ui->glmF->text();
              ui->icpF->text();
              ui->gamEP->text();
          }
          

          Please learn c++ basics.

          A Offline
          A Offline
          aim0d
          wrote on last edited by
          #8

          @Christian-Ehrlicher I was trying to get every text for my QLineEdit; I wrote it like that just becuase I thought I have to wrote it like this to have the same result as the first answer i get.

          What do you expect?

          As I already said: I just want to get the texts from QLineEdit in my Dialog to my Main Window

          1 Reply Last reply
          0
          • J.HilkJ J.Hilk

            @aim0d said in From QLineEdit Dialog to MainWindows:

            but crashed when I click the button to open the Dialog

            I think it crashes here QString value = pd.getResult();

            because your non void function has no return statement. You should have at least a warning about this in QtCreator.

            A Offline
            A Offline
            aim0d
            wrote on last edited by aim0d
            #9

            @J-Hilk

            You should have at least a warning about this in QtCreator.

            I dont, because my MainWindow start and when I try to open the Dialog the terminal just says it crashed. If I had a warning first I would see it and second my application woudnt start at all

            1 Reply Last reply
            0
            • jsulmJ jsulm

              @aim0d said in From QLineEdit Dialog to MainWindows:

              I'm actually have more QLineEdit value to transfer from Dialog to MW

              Either create a getter method for each of them or create a structure where you put all these strings and implement a getter method which returns this struct.

              A Offline
              A Offline
              aim0d
              wrote on last edited by
              #10

              @jsulm

              create a structure where you put all these strings and implement a getter method which returns this struct.

              I actually dont know how to do that. It the right way I mean. It's already been 2days i'm trying to have this :(

              1 Reply Last reply
              0
              • A aim0d

                @jsulm It worked, thanks!
                Just a quick question: I'm actually have more QLineEdit value to transfer from Dialog to MW;
                I tried via getValuePar():

                dialog.cpp

                QString parametri::getValuePar()
                {
                    QString pmFV =  ui->pmFV->text();    
                   QString glmF = ui->glmF->text();    
                     QString icpF =ui->icpF->text();    
                     QString gamEP =ui->gamEP->text();    
                      QString icpEP = ui->icpEP->text();
                    return pmFV + glmF;
                }
                
                QString parametri::getResult()
                {
                    return getValuePar();
                }
                

                MainWindow,cpp

                void MainWindow::on_parametri_clicked()
                {
                    class parametri pd;
                    pd.exec();
                    QString value = pd.getResult();
                    qDebug() << value;
                }
                

                When I run the project It opens the MainWindow but crashed when I click the button to open the Dialog

                A Offline
                A Offline
                aim0d
                wrote on last edited by
                #11

                @aim0d I change it
                but the result is the two values united like these are the values:
                QString pmFV = ui->pmFV->text(123);
                QString glmF = ui->glmF->text(78);

                and this is the output in qDebug() -> 12378

                Christian EhrlicherC 1 Reply Last reply
                0
                • A aim0d

                  @aim0d I change it
                  but the result is the two values united like these are the values:
                  QString pmFV = ui->pmFV->text(123);
                  QString glmF = ui->glmF->text(78);

                  and this is the output in qDebug() -> 12378

                  Christian EhrlicherC Online
                  Christian EhrlicherC Online
                  Christian Ehrlicher
                  Lifetime Qt Champion
                  wrote on last edited by
                  #12

                  @aim0d said in From QLineEdit Dialog to MainWindows:

                  QString pmFV = ui->pmFV->text(123);
                  QString glmF = ui->glmF->text(78);

                  This does not even compile...

                  How about some c++ basics before starting with Qt

                  I actually dont know how to do that. It the right way I mean.

                  See e.g QString::append()

                  Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                  Visit the Qt Academy at https://academy.qt.io/catalog

                  A 1 Reply Last reply
                  0
                  • Christian EhrlicherC Christian Ehrlicher

                    @aim0d said in From QLineEdit Dialog to MainWindows:

                    QString pmFV = ui->pmFV->text(123);
                    QString glmF = ui->glmF->text(78);

                    This does not even compile...

                    How about some c++ basics before starting with Qt

                    I actually dont know how to do that. It the right way I mean.

                    See e.g QString::append()

                    A Offline
                    A Offline
                    aim0d
                    wrote on last edited by aim0d
                    #13

                    @Christian-Ehrlicher It gives me what I need in the wrong way
                    I dont have actual time to learn c++ in a right way; this is a work project and give me this stuff to do knowing I know very little of c++

                    And I repeat, this give me the output I wrote in my last comment, but not in the format I need

                    This does not even compile...

                    it was and example to let you understand the output for god sake, it's not my actual code if you have to answer pls at least try to understan what I'm writing

                    Christian EhrlicherC jsulmJ 2 Replies Last reply
                    0
                    • A aim0d

                      @Christian-Ehrlicher It gives me what I need in the wrong way
                      I dont have actual time to learn c++ in a right way; this is a work project and give me this stuff to do knowing I know very little of c++

                      And I repeat, this give me the output I wrote in my last comment, but not in the format I need

                      This does not even compile...

                      it was and example to let you understand the output for god sake, it's not my actual code if you have to answer pls at least try to understan what I'm writing

                      Christian EhrlicherC Online
                      Christian EhrlicherC Online
                      Christian Ehrlicher
                      Lifetime Qt Champion
                      wrote on last edited by Christian Ehrlicher
                      #14

                      @aim0d said in From QLineEdit Dialog to MainWindows:

                      I dont have actual time to learn c++ in a right way;

                      Then you're wrong here.

                      And I repeat, this give me the output I wrote in my last comment, but not in the format I need

                      It does not compile since QLineEdit has not function text() which takes an integer.

                      I'm out here.

                      Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                      Visit the Qt Academy at https://academy.qt.io/catalog

                      1 Reply Last reply
                      0
                      • A aim0d

                        @Christian-Ehrlicher It gives me what I need in the wrong way
                        I dont have actual time to learn c++ in a right way; this is a work project and give me this stuff to do knowing I know very little of c++

                        And I repeat, this give me the output I wrote in my last comment, but not in the format I need

                        This does not even compile...

                        it was and example to let you understand the output for god sake, it's not my actual code if you have to answer pls at least try to understan what I'm writing

                        jsulmJ Offline
                        jsulmJ Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on last edited by
                        #15

                        @aim0d said in From QLineEdit Dialog to MainWindows:

                        I dont have actual time to learn c++ in a right way

                        Do you think it is better/more efficient to spend a lot of time in a forum to get help for issues you would not have if you would learn the basics of the programming language you're using? You should really reconsider your approach...

                        struct is one of the most basic things in C++:

                        struct Data
                        {
                            QString data1;
                            QString data2;
                            ...
                        }
                        
                        Data parametri::getValuePar()
                        {
                            Data result;
                            result.data1 = ui->pmFV->text();
                            result.data2 = ui->glmF->text();
                            ...
                            return result;
                        }
                        

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

                        A 1 Reply Last reply
                        2
                        • jsulmJ jsulm

                          @aim0d said in From QLineEdit Dialog to MainWindows:

                          I dont have actual time to learn c++ in a right way

                          Do you think it is better/more efficient to spend a lot of time in a forum to get help for issues you would not have if you would learn the basics of the programming language you're using? You should really reconsider your approach...

                          struct is one of the most basic things in C++:

                          struct Data
                          {
                              QString data1;
                              QString data2;
                              ...
                          }
                          
                          Data parametri::getValuePar()
                          {
                              Data result;
                              result.data1 = ui->pmFV->text();
                              result.data2 = ui->glmF->text();
                              ...
                              return result;
                          }
                          
                          A Offline
                          A Offline
                          aim0d
                          wrote on last edited by
                          #16

                          @jsulm

                          Do you think it is better/more efficient to spend a lot of time in a forum to get help for issues you would not have if you would learn the basics of the programming language you're using? You should really reconsider your approach...

                          I know, but as I said it's a project my boss gives me with a deadline in a week and they know I have little experience in C++; so i'm stuck here trying to build something with what I know and I found online

                          1 Reply Last reply
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