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Show integer value in qtable widget

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  • VRoninV VRonin

    Guys, there are other methods in a class beyond the constructor!

    auto widItem = new QTableWidgetItem;
    widItem->setData(Qt::EditRole,rgnt.R_id);
    ui->tableWidget_3->setItem(0,1,widItem);
    
    Taz742T Offline
    Taz742T Offline
    Taz742
    wrote on last edited by Taz742
    #5

    @VRonin
    The difference is big?
    Can you give specific answers?

    Do what you want.

    1 Reply Last reply
    1
    • VRoninV Offline
      VRoninV Offline
      VRonin
      wrote on last edited by
      #6

      Huge!

      Just for a laugh, try filling a column with the numbers from 1 to 100 using your method and then sort the column.

      on top of that, QString::number and QString::toInt should never be used for things that are shown on the ui. Always use QLocale::toString and QLocale::toInt with the locale of the widget you are presenting the value to

      "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
      ~Napoleon Bonaparte

      On a crusade to banish setIndexWidget() from the holy land of Qt

      artwawA 1 Reply Last reply
      4
      • VRoninV VRonin

        Huge!

        Just for a laugh, try filling a column with the numbers from 1 to 100 using your method and then sort the column.

        on top of that, QString::number and QString::toInt should never be used for things that are shown on the ui. Always use QLocale::toString and QLocale::toInt with the locale of the widget you are presenting the value to

        artwawA Offline
        artwawA Offline
        artwaw
        wrote on last edited by
        #7

        @VRonin said in Show integer value in qtable widget:

        QString::number and QString::toInt should never be used for things that are shown on the ui.

        I apologize for hijacking the thread but what if you have just plain integers and you are sure that values are locale independent?

        For more information please re-read.

        Kind Regards,
        Artur

        1 Reply Last reply
        0
        • VRoninV Offline
          VRoninV Offline
          VRonin
          wrote on last edited by
          #8

          While we think arab numbers are universal, they are not. Chinese locales, for example, have special unicode chars for numbers (0 = 零, 1 = 一) . Even arabic has different chars for arab numbers

          "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
          ~Napoleon Bonaparte

          On a crusade to banish setIndexWidget() from the holy land of Qt

          artwawA Taz742T 2 Replies Last reply
          4
          • VRoninV VRonin

            While we think arab numbers are universal, they are not. Chinese locales, for example, have special unicode chars for numbers (0 = 零, 1 = 一) . Even arabic has different chars for arab numbers

            artwawA Offline
            artwawA Offline
            artwaw
            wrote on last edited by
            #9

            @VRonin Thank you!

            For more information please re-read.

            Kind Regards,
            Artur

            1 Reply Last reply
            0
            • Taz742T Taz742

              @QTlearner90

              ui->tableWidget_3->setItem(0, 1, new QTableWidgetItem(QString::number(rgnt.R_id) ) );
              

              https://www.google.ge/search?q=number+to+qstring&oq=number+to+qstring&aqs=chrome.0.0j69i60l3j0l2.4535j0j7&sourceid=chrome&ie=UTF-8

              Q Offline
              Q Offline
              QTlearner90
              wrote on last edited by
              #10

              @Taz742 thank you.. it works..

              Taz742T 1 Reply Last reply
              0
              • Q QTlearner90

                @Taz742 thank you.. it works..

                Taz742T Offline
                Taz742T Offline
                Taz742
                wrote on last edited by
                #11

                @QTlearner90
                Yes it works. But review the comments and then make a decision.
                I think it's better if you use another method what @VRonin said.

                auto widItem = new QTableWidgetItem;
                widItem->setData(Qt::EditRole,rgnt.R_id);
                ui->tableWidget_3->setItem(0,1,widItem);
                

                Do what you want.

                1 Reply Last reply
                0
                • VRoninV VRonin

                  While we think arab numbers are universal, they are not. Chinese locales, for example, have special unicode chars for numbers (0 = 零, 1 = 一) . Even arabic has different chars for arab numbers

                  Taz742T Offline
                  Taz742T Offline
                  Taz742
                  wrote on last edited by
                  #12

                  @VRonin
                  Why does not it take Qt::Checked or Qt::Unchecked?

                  Do what you want.

                  VRoninV 1 Reply Last reply
                  0
                  • Taz742T Taz742

                    @VRonin
                    Why does not it take Qt::Checked or Qt::Unchecked?

                    VRoninV Offline
                    VRoninV Offline
                    VRonin
                    wrote on last edited by
                    #13

                    @Taz742 said in Show integer value in qtable widget:

                    @VRonin
                    Why does not it take Qt::Checked or Qt::Unchecked?

                    You need to adjust the flag too for that role to matter widItem->setFlags(widItem->flags() | Qt::ItemIsUserCheckable);

                    "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
                    ~Napoleon Bonaparte

                    On a crusade to banish setIndexWidget() from the holy land of Qt

                    Taz742T 1 Reply Last reply
                    3
                    • VRoninV VRonin

                      @Taz742 said in Show integer value in qtable widget:

                      @VRonin
                      Why does not it take Qt::Checked or Qt::Unchecked?

                      You need to adjust the flag too for that role to matter widItem->setFlags(widItem->flags() | Qt::ItemIsUserCheckable);

                      Taz742T Offline
                      Taz742T Offline
                      Taz742
                      wrote on last edited by Taz742
                      #14

                      @VRonin Can not I give it my function?

                      QTableWidgetItem *dlgGroups::GetNewItem(const QVariant value){
                          auto c_item = new QTableWidgetItem;
                               c_item->setData(Qt::UserRole, value);
                          return (QTableWidgetItem*) c_item;
                      }
                      
                      Contact *cont = globalall->GetConact(CUID);
                      
                      m_table->insertRow(0);
                      m_table->setItem(0, 0, GetNewItem(InsertQry.lastInsertId().toString()));
                      m_table->setItem(0, 1, GetNewItem(cont->UID));
                      m_table->setItem(0, 2, GetNewItem(Qt::Unchecked)); // ?
                      m_table->setItem(0, 3, GetNewItem(cont->Name + " " + cont->FamilyName));
                      m_table->setItem(0, 4, GetNewItem(cont->Mobile));
                      m_table->setItem(0, 5, GetNewItem(cont->Type ? cont->Identification : cont->PersonID));
                      

                      Do what you want.

                      VRoninV 1 Reply Last reply
                      0
                      • Taz742T Taz742

                        @VRonin Can not I give it my function?

                        QTableWidgetItem *dlgGroups::GetNewItem(const QVariant value){
                            auto c_item = new QTableWidgetItem;
                                 c_item->setData(Qt::UserRole, value);
                            return (QTableWidgetItem*) c_item;
                        }
                        
                        Contact *cont = globalall->GetConact(CUID);
                        
                        m_table->insertRow(0);
                        m_table->setItem(0, 0, GetNewItem(InsertQry.lastInsertId().toString()));
                        m_table->setItem(0, 1, GetNewItem(cont->UID));
                        m_table->setItem(0, 2, GetNewItem(Qt::Unchecked)); // ?
                        m_table->setItem(0, 3, GetNewItem(cont->Name + " " + cont->FamilyName));
                        m_table->setItem(0, 4, GetNewItem(cont->Mobile));
                        m_table->setItem(0, 5, GetNewItem(cont->Type ? cont->Identification : cont->PersonID));
                        
                        VRoninV Offline
                        VRoninV Offline
                        VRonin
                        wrote on last edited by VRonin
                        #15

                        @Taz742

                        1. you still did not set the flag
                        2. you are saving everything in Qt::UserRole which is never used by Qt's standard views
                        QTableWidgetItem *dlgGroups::GetNewItem(const QVariant& value, int role = Qt::EditRole){
                            auto c_item = new QTableWidgetItem;
                            c_item->setData(role , value);
                            if(role==Qt::CheckStateRole)
                                c_item->setFlags(c_item->flags() | Qt::ItemIsUserCheckable);
                            return c_item;
                        }
                        

                        then you can use m_table->setItem(0, 2, GetNewItem(Qt::Unchecked,Qt::CheckStateRole));

                        "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
                        ~Napoleon Bonaparte

                        On a crusade to banish setIndexWidget() from the holy land of Qt

                        Taz742T 1 Reply Last reply
                        2
                        • VRoninV VRonin

                          @Taz742

                          1. you still did not set the flag
                          2. you are saving everything in Qt::UserRole which is never used by Qt's standard views
                          QTableWidgetItem *dlgGroups::GetNewItem(const QVariant& value, int role = Qt::EditRole){
                              auto c_item = new QTableWidgetItem;
                              c_item->setData(role , value);
                              if(role==Qt::CheckStateRole)
                                  c_item->setFlags(c_item->flags() | Qt::ItemIsUserCheckable);
                              return c_item;
                          }
                          

                          then you can use m_table->setItem(0, 2, GetNewItem(Qt::Unchecked,Qt::CheckStateRole));

                          Taz742T Offline
                          Taz742T Offline
                          Taz742
                          wrote on last edited by
                          #16

                          @VRonin
                          Many Thank!!!

                          Do what you want.

                          1 Reply Last reply
                          0

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