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gui not showing, or closing to fast to see

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  • M micha_eleric

    @JonB both

    ui->textEdit_40->setFixedSize(30,  30);
    ui->textEdit_41->setFixedSize(30,  30);
    

    cause problems. comment out the first, second one crashes. comment out both, it runs.

    JonBJ Offline
    JonBJ Offline
    JonB
    wrote on last edited by
    #22

    @micha_eleric And the rest of the things I suggested you try?

    M 1 Reply Last reply
    0
    • JonBJ JonB

      @micha_eleric And the rest of the things I suggested you try?

      M Offline
      M Offline
      micha_eleric
      wrote on last edited by
      #23

      @JonB

      qDebug() << ui->textEdit_40->objectName() << ui->textEdit_41->objectName();
      qDebug() << ui->textEdit_40->objectName();
      qDebug() << ui->textEdit_41->objectName();
      

      all caused crash, no messages, that i found

      JonBJ 1 Reply Last reply
      0
      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #24

        Hi,

        Is ui initialized properly ?

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

        1 Reply Last reply
        0
        • M micha_eleric

          @JonB

          qDebug() << ui->textEdit_40->objectName() << ui->textEdit_41->objectName();
          qDebug() << ui->textEdit_40->objectName();
          qDebug() << ui->textEdit_41->objectName();
          

          all caused crash, no messages, that i found

          JonBJ Offline
          JonBJ Offline
          JonB
          wrote on last edited by
          #25

          @micha_eleric
          So it looks like you have a problem with those two textEdit pointers? Btw you have done a clean rebuild, so the uic has been run on the latest .ui file? You have initialised the ui prior to this code?

          M JonBJ 2 Replies Last reply
          0
          • JonBJ JonB

            @micha_eleric
            You have several things wrong. Whether they cause the crash I don't know, but let's start by sorting them out....

            Remove your try ... catch. Qt does not throw C++ exceptions, and if you have a coding error/"crash" it won't catch it anyway.

            ui->pushButton_22->connect(ui->pushButton_22, &QPushButton::clicked, this, &CGUI::Btn_test_clicked); //?? new qt5

            @Pl45m4 already said this is wrong. You want:

            connect(ui->pushButton_22, &QPushButton::clicked, this, &CGUI::Btn_test_clicked);    //?? new qt5
            

            Before

            ui->textEdit_40->setFixedSize(30,  30);
            ui->textEdit_41->setFixedSize(30,  30);
            

            let's put in something like:

            qDebug() << ui->textEdit_40 << ui->textEdit_41;
            // if previous line not acceptable to compiler remove it
            qDebug() << ui->textEdit_40->objectName() << ui->textEdit_41->objectName();
            

            If either of these "crash"/"go wrong", narrow down to textEdit_40 vs textEdit_41 one at a time. Is it because of just one of them, not the other? Or, does accessing either of them cause the problem?

            At one point you said a SIGSTOP was reported. Now you talk about "crashing", or just exiting. In any case, are you compiling for debug and running inside the debugger? Does the debugger catch anything/stop/report anything when your code goes wrong or exits?

            M Offline
            M Offline
            micha_eleric
            wrote on last edited by
            #26

            @JonB said in gui not showing, or closing to fast to see:

            At one point you said a SIGSTOP was reported. Now you talk about "crashing", or just exiting. In any case, are you compiling for debug and running inside the debugger? Does the debugger catch anything/stop/report anything when your code goes wrong or exits?

            if i dont compile for debug, it runs, till i get to code that crashes. compile debug, and it crashes before getting to error code, and tells me nothing about where.

            1 Reply Last reply
            0
            • JonBJ JonB

              @micha_eleric
              So it looks like you have a problem with those two textEdit pointers? Btw you have done a clean rebuild, so the uic has been run on the latest .ui file? You have initialised the ui prior to this code?

              M Offline
              M Offline
              micha_eleric
              wrote on last edited by micha_eleric
              #27

              @JonB said in gui not showing, or closing to fast to see:

              @micha_eleric
              So it looks like you have a problem with those two textEdit pointers? Btw you have done a clean rebuild, so the uic has been run on the latest .ui file? You have initialised the ui prior to this code?

              actually, i am using a .h file. just saw yesterday, that i could not open it with qt 5 designer, and qt 5 designer saves in .ui

              most other text boxes and buttons run fine.
              code in .h file for text boxes and buttons, look like copy/paste except numbers change.
              dont know how to convert .h to .ui, or how to open .h with qt 5 designer. the qt designer i used before was much easier to design with.

              JonBJ 1 Reply Last reply
              0
              • M micha_eleric

                @JonB said in gui not showing, or closing to fast to see:

                @micha_eleric
                So it looks like you have a problem with those two textEdit pointers? Btw you have done a clean rebuild, so the uic has been run on the latest .ui file? You have initialised the ui prior to this code?

                actually, i am using a .h file. just saw yesterday, that i could not open it with qt 5 designer, and qt 5 designer saves in .ui

                most other text boxes and buttons run fine.
                code in .h file for text boxes and buttons, look like copy/paste except numbers change.
                dont know how to convert .h to .ui, or how to open .h with qt 5 designer. the qt designer i used before was much easier to design with.

                JonBJ Offline
                JonBJ Offline
                JonB
                wrote on last edited by
                #28

                @micha_eleric
                I happen to notice that after ui->textEdit_38 ui->textEdit_39 is absent, then you say it goes wrong at ui->textEdit_40. Don't know what you want 40+ text edits for, but anyway why not delete all after ui->textEdit_38, make sure it works at that point. Then add the further ones in and see how it goes.

                M 2 Replies Last reply
                0
                • JonBJ JonB

                  @micha_eleric
                  I happen to notice that after ui->textEdit_38 ui->textEdit_39 is absent, then you say it goes wrong at ui->textEdit_40. Don't know what you want 40+ text edits for, but anyway why not delete all after ui->textEdit_38, make sure it works at that point. Then add the further ones in and see how it goes.

                  M Offline
                  M Offline
                  micha_eleric
                  wrote on last edited by
                  #29

                  @JonB said in gui not showing, or closing to fast to see:

                  @micha_eleric
                  I happen to notice that after ui->textEdit_38 ui->textEdit_39 is absent, then you say it goes wrong at ui->textEdit_40. Don't know what you want 40+ text edits for, but anyway why not delete all after ui->textEdit_38, make sure it works at that point. Then add the further ones in and see how it goes.

                  yah. not sure about that.
                  did find 39,40, and 41 cause a crash in another part that call those three, but not the other text boxes.

                  1 Reply Last reply
                  0
                  • JonBJ JonB

                    @micha_eleric
                    I happen to notice that after ui->textEdit_38 ui->textEdit_39 is absent, then you say it goes wrong at ui->textEdit_40. Don't know what you want 40+ text edits for, but anyway why not delete all after ui->textEdit_38, make sure it works at that point. Then add the further ones in and see how it goes.

                    M Offline
                    M Offline
                    micha_eleric
                    wrote on last edited by
                    #30

                    @JonB said in gui not showing, or closing to fast to see:

                    @micha_eleric
                    I happen to notice that after ui->textEdit_38 ui->textEdit_39 is absent, then you say it goes wrong at ui->textEdit_40. Don't know what you want 40+ text edits for, but anyway why not delete all after ui->textEdit_38, make sure it works at that point. Then add the further ones in and see how it goes.
                    runs fine

                               std::cout << "InitTestBoard try 3 \n" << std::flush;
                             //   ui->textEdit_40->setFixedSize(30,  30);
                             //   ui->textEdit_41->setFixedSize(30,  30);
                                ui->textEdit_42->setFixedSize(30,  30);
                                ui->textEdit_43->setFixedSize(30,  30);
                                ui->textEdit_44->setFixedSize(30,  30);
                                ui->textEdit_45->setFixedSize(30,  30);
                                std::cout << "InitTestBoard try end \n" << std::flush;
                    

                    crashes

                                std::cout << "InitTestBoard try 3 \n" << std::flush;
                                ui->textEdit_40->setFixedSize(30,  30);
                                ui->textEdit_41->setFixedSize(30,  30);
                                ui->textEdit_42->setFixedSize(30,  30);
                                ui->textEdit_43->setFixedSize(30,  30);
                                ui->textEdit_44->setFixedSize(30,  30);
                                ui->textEdit_45->setFixedSize(30,  30);
                                std::cout << "InitTestBoard try end \n" << std::flush;
                    
                    1 Reply Last reply
                    0
                    • M Offline
                      M Offline
                      micha_eleric
                      wrote on last edited by
                      #31

                      found it
                      in CUi_MainWindow.h [the file that has gui layout] file 39, 40, and 41 are different

                      1 Reply Last reply
                      0
                      • JonBJ JonB

                        @micha_eleric
                        So it looks like you have a problem with those two textEdit pointers? Btw you have done a clean rebuild, so the uic has been run on the latest .ui file? You have initialised the ui prior to this code?

                        JonBJ Offline
                        JonBJ Offline
                        JonB
                        wrote on last edited by JonB
                        #32

                        @JonB said in gui not showing, or closing to fast to see:

                        Btw you have done a clean rebuild, so the uic has been run on the latest .ui file?

                        @micha_eleric
                        Do a complete project rebuild/make some change in Designer to update the .ui file and force uic to run on it again. ui_MainWindow.h is a generated file; don't change it yourself, it will get overwritten.

                        M 1 Reply Last reply
                        1
                        • JonBJ JonB

                          @JonB said in gui not showing, or closing to fast to see:

                          Btw you have done a clean rebuild, so the uic has been run on the latest .ui file?

                          @micha_eleric
                          Do a complete project rebuild/make some change in Designer to update the .ui file and force uic to run on it again. ui_MainWindow.h is a generated file; don't change it yourself, it will get overwritten.

                          M Offline
                          M Offline
                          micha_eleric
                          wrote on last edited by
                          #33

                          @JonB not sure where to ui or uic files are. if i still have them

                          Pl45m4P 1 Reply Last reply
                          0
                          • M micha_eleric

                            @JonB not sure where to ui or uic files are. if i still have them

                            Pl45m4P Offline
                            Pl45m4P Offline
                            Pl45m4
                            wrote on last edited by Pl45m4
                            #34

                            @micha_eleric

                            uic is the User Interface Compiler, which does exactly what you've mentioned before.. creates an usable header from your *.ui design template...
                            And every time you re-run it, your header file will be created or updated... so it makes no sense to edit the file yourself and change some object names


                            If debugging is the process of removing software bugs, then programming must be the process of putting them in.

                            ~E. W. Dijkstra

                            M 1 Reply Last reply
                            0
                            • Pl45m4P Pl45m4

                              @micha_eleric

                              uic is the User Interface Compiler, which does exactly what you've mentioned before.. creates an usable header from your *.ui design template...
                              And every time you re-run it, your header file will be created or updated... so it makes no sense to edit the file yourself and change some object names

                              M Offline
                              M Offline
                              micha_eleric
                              wrote on last edited by
                              #35

                              @Pl45m4 just found the .iu file.
                              trying to remember what i did 4 years ago

                              JonBJ 1 Reply Last reply
                              0
                              • M micha_eleric

                                @Pl45m4 just found the .iu file.
                                trying to remember what i did 4 years ago

                                JonBJ Offline
                                JonBJ Offline
                                JonB
                                wrote on last edited by
                                #36

                                @micha_eleric
                                Go into Designer, make some small change, save, build, does it work now?

                                M 3 Replies Last reply
                                0
                                • JonBJ JonB

                                  @micha_eleric
                                  Go into Designer, make some small change, save, build, does it work now?

                                  M Offline
                                  M Offline
                                  micha_eleric
                                  wrote on last edited by
                                  #37

                                  @JonB build is gray

                                  1 Reply Last reply
                                  0
                                  • JonBJ JonB

                                    @micha_eleric
                                    Go into Designer, make some small change, save, build, does it work now?

                                    M Offline
                                    M Offline
                                    micha_eleric
                                    wrote on last edited by
                                    #38

                                    @JonB ok. default opens with qt creator, and build is gray
                                    open with qt designer, and find no build

                                    1 Reply Last reply
                                    0
                                    • JonBJ JonB

                                      @micha_eleric
                                      Go into Designer, make some small change, save, build, does it work now?

                                      M Offline
                                      M Offline
                                      micha_eleric
                                      wrote on last edited by
                                      #39

                                      @JonB said in gui not showing, or closing to fast to see:

                                      @micha_eleric
                                      Go into Designer, make some small change, save, build, does it work now?

                                      where is build in qt designer?

                                      jsulmJ 1 Reply Last reply
                                      0
                                      • M micha_eleric

                                        @JonB said in gui not showing, or closing to fast to see:

                                        @micha_eleric
                                        Go into Designer, make some small change, save, build, does it work now?

                                        where is build in qt designer?

                                        jsulmJ Offline
                                        jsulmJ Offline
                                        jsulm
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #40

                                        @micha_eleric said in gui not showing, or closing to fast to see:

                                        where is build in qt designer?

                                        There is no build in QtDesigner.
                                        You build your project in QtCreator. And you also should rather edit ui files in QtCreator (QtDesigner is integrated there)...

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

                                        1 Reply Last reply
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