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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

    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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