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About functions and lineEdit

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #15

    That won't do what you want at all.

    You are calling setLayout in main and not on a widget

    Also your connection statements are wrong.

    Please, have a look at some of Qt's example to see how things work

    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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    • P Offline
      P Offline
      Project try
      wrote on last edited by
      #16

      Well , that's the only way I would learn is by making mistakes :D , that's why I wanted to do it my way before trying what you guys have told me.

      by the way why can't I call it in main ? should I include something first ?

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      • P Offline
        P Offline
        Project try
        wrote on last edited by
        #17

        and could you please tell me where should I call it ?

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #18

          setLayout is a function of QWidget, so you need a QWidget object.

          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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          • P Offline
            P Offline
            Project try
            wrote on last edited by
            #19

            what if I made a class and inherited qwidget ? or there's a better way ?

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            • P Offline
              P Offline
              Project try
              wrote on last edited by
              #20

              Oh , so I could just create a pointer to that object and use that pointer to set the layout ? and if I wanted to make bigger programs I should just inherit it on my classes ?

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              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #21

                Subclass QWidget, it's the correct way to go here.

                You really should take a look at Qt's demos and examples, that will give you a good ground to build on

                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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                • P Offline
                  P Offline
                  Project try
                  wrote on last edited by
                  #22

                  I really looked at some examples about two weeks ago " I don't have much time " since I've been busy with my midterms exams :(

                  but I'll finish this one , hopefully it will work then I'll look at some examples tomorrow.

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                  • P Offline
                    P Offline
                    Project try
                    wrote on last edited by
                    #23

                    about converting from string to int , should always do this ? is there a way to just take an integer or any type i want from the user ?

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                    • P Offline
                      P Offline
                      Project try
                      wrote on last edited by
                      #24

                      I think I'll create a new class to do these things , specially that this won't work because there's no reference. is it ok if I posted on this thread tomorrow ? or it's against the rules to bump a thread with +12 hours without posting ?

                      thanks man , I really appreciate your help.

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                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #25

                        It's better not to bump 24 hours is the common time interval.

                        If you want integers directly, use a QSpinBox, it will simplify your program

                        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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