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  4. [solved] Newbie is confused.How to add dynamic data to TableView and parse through it send data to c++

[solved] Newbie is confused.How to add dynamic data to TableView and parse through it send data to c++

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  • M Offline
    M Offline
    mcosta
    wrote on last edited by mcosta
    #2

    Hi,

    I suggest to use JSON.stringify() to have a JSON string from each record in the model

    This code

    onClicked: {
    //            send all the data to cpp inorder to append to char array.
    var rows = [];
    for (var i = 0; i < setTableModel.count; ++i) {
        var obj = JSON.stringify(setTableModel.get(i));
        rows.push(obj)
    }
    console.log('We have ' + rows.length + ' rows')
    console.log(rows)
}

    prints

    qml: We have 3 rows
qml: [{"objectName":"","tracking_z":200,"tracking_y":100,"tracking_x":200,"deceleration":300,"velocity":200,"z_position":300,"y_position":200,"x_position":100},{"objectName":"","tracking_z":200,"tracking_y":100,"tracking_x":200,"deceleration":300,"velocity":200,"z_position":300,"y_position":200,"x_position":100},{"objectName":"","tracking_z":200,"tracking_y":100,"tracking_x":200,"deceleration":300,"velocity":200,"z_position":300,"y_position":200,"x_position":100}]

    In C++ you'll receive a QList of QStrings that you can easily parse using the JSON module

    Once your problem is solved don't forget to:

    • Mark the thread as SOLVED using the Topic Tool menu
    • Vote up the answer(s) that helped you to solve the issue

    You can embed images using (http://imgur.com/) or (http://postimage.org/)

    vishnuV 1 Reply Last reply
    1
    • M mcosta

      Hi,

      I suggest to use JSON.stringify() to have a JSON string from each record in the model

      This code

      onClicked: {
    //            send all the data to cpp inorder to append to char array.
    var rows = [];
    for (var i = 0; i < setTableModel.count; ++i) {
        var obj = JSON.stringify(setTableModel.get(i));
        rows.push(obj)
    }
    console.log('We have ' + rows.length + ' rows')
    console.log(rows)
}

      prints

      qml: We have 3 rows
qml: [{"objectName":"","tracking_z":200,"tracking_y":100,"tracking_x":200,"deceleration":300,"velocity":200,"z_position":300,"y_position":200,"x_position":100},{"objectName":"","tracking_z":200,"tracking_y":100,"tracking_x":200,"deceleration":300,"velocity":200,"z_position":300,"y_position":200,"x_position":100},{"objectName":"","tracking_z":200,"tracking_y":100,"tracking_x":200,"deceleration":300,"velocity":200,"z_position":300,"y_position":200,"x_position":100}]

      In C++ you'll receive a QList of QStrings that you can easily parse using the JSON module

      vishnuV Offline
      vishnuV Offline
      vishnu
      wrote on last edited by vishnu
      #3

      @mcosta
      Thanks a lot for the reply. I really don't know how to parse using the JSON module. I tried this way as per your hint.
      In qml i have sent the whole rows to the backend.

      var rows = [];
 for (var i = 0; i < setTableModel.count; ++i) {
 var obj = JSON.stringify(setTableModel.get(i));
 rows.push(obj);
 }
SetTableDataHandling.datafromsetTableQml(rows);//Is this the right way to send?

      where SetTableDataHandling is a registered c++ class.
      In c++:

      void SetTableDataHandling::datafromsetTableQml(QList<QString> var) //Is this the right way to do?
{
  //How exactly i should parse the data?
   qDebug()<<"received data "<<var.at(2);
}

      Thanks.

      1 Reply Last reply
      0
      • M Offline
        M Offline
        mcosta
        wrote on last edited by
        #4

        Hi,

        you should use QJsonDocument to parse JSON strings

        Once your problem is solved don't forget to:

        • Mark the thread as SOLVED using the Topic Tool menu
        • Vote up the answer(s) that helped you to solve the issue

        You can embed images using (http://imgur.com/) or (http://postimage.org/)

        vishnuV 1 Reply Last reply
        0
        • M mcosta

          Hi,

          you should use QJsonDocument to parse JSON strings

          vishnuV Offline
          vishnuV Offline
          vishnu
          wrote on last edited by
          #5

          @mcosta
          Is it correct the way how I access the Qml data in cpp?
          void SetTableDataHandling::datafromsetTableQml(QList<QString> var) //Is this the right way to do?

          p3c0P 1 Reply Last reply
          0
          • vishnuV vishnu

            @mcosta
            Is it correct the way how I access the Qml data in cpp?
            void SetTableDataHandling::datafromsetTableQml(QList<QString> var) //Is this the right way to do?

            p3c0P Offline
            p3c0P Offline
            p3c0
            Moderators
            wrote on last edited by p3c0
            #6

            @vishnu Actually you can directly access QML ListModel from C++. It can be casted into QAbstractListModel. Here is an example of how to access the data from C++

            QObject* root = engine.rootObjects().first(); //get the root object as usual
QObject* list = root->findChild<QObject*>("myListview"); //get the ListView

QVariant qmlmodel = list->property("model"); //access model property of ListView
QAbstractListModel *model = qvariant_cast<QAbstractListModel *>(qmlmodel); //convert to QAbstractListModel

int rows = model->rowCount(); //get number of rows from model

//iterate through the model
for (int i = 0; i<rows; i++) {
    for(int j = 0; j<model->roleNames().count(); j++) { //get the roles count
        qDebug() <<  model->index(i, 0).data(j); //get the actual data using roles
    }
}

//accessing roles
for(int j = 0; j<model->roleNames().count(); j++) {
    qDebug() << model->roleNames()[j];
}

            P.S: In your case it would be TableView.

            157

            vishnuV 2 Replies Last reply
            1
            • p3c0P p3c0

              @vishnu Actually you can directly access QML ListModel from C++. It can be casted into QAbstractListModel. Here is an example of how to access the data from C++

              QObject* root = engine.rootObjects().first(); //get the root object as usual
QObject* list = root->findChild<QObject*>("myListview"); //get the ListView

QVariant qmlmodel = list->property("model"); //access model property of ListView
QAbstractListModel *model = qvariant_cast<QAbstractListModel *>(qmlmodel); //convert to QAbstractListModel

int rows = model->rowCount(); //get number of rows from model

//iterate through the model
for (int i = 0; i<rows; i++) {
    for(int j = 0; j<model->roleNames().count(); j++) { //get the roles count
        qDebug() <<  model->index(i, 0).data(j); //get the actual data using roles
    }
}

//accessing roles
for(int j = 0; j<model->roleNames().count(); j++) {
    qDebug() << model->roleNames()[j];
}

              P.S: In your case it would be TableView.

              vishnuV Offline
              vishnuV Offline
              vishnu
              wrote on last edited by
              #7

              @p3c0
              Thanks a lot man!!!
              But how do i get engine which is instanstiated in main.cpp to the function where I have to handle the data? Because engine is not declared in this scope right? Thanks

              1 Reply Last reply
              0
              • p3c0P p3c0

                @vishnu Actually you can directly access QML ListModel from C++. It can be casted into QAbstractListModel. Here is an example of how to access the data from C++

                QObject* root = engine.rootObjects().first(); //get the root object as usual
QObject* list = root->findChild<QObject*>("myListview"); //get the ListView

QVariant qmlmodel = list->property("model"); //access model property of ListView
QAbstractListModel *model = qvariant_cast<QAbstractListModel *>(qmlmodel); //convert to QAbstractListModel

int rows = model->rowCount(); //get number of rows from model

//iterate through the model
for (int i = 0; i<rows; i++) {
    for(int j = 0; j<model->roleNames().count(); j++) { //get the roles count
        qDebug() <<  model->index(i, 0).data(j); //get the actual data using roles
    }
}

//accessing roles
for(int j = 0; j<model->roleNames().count(); j++) {
    qDebug() << model->roleNames()[j];
}

                P.S: In your case it would be TableView.

                vishnuV Offline
                vishnuV Offline
                vishnu
                wrote on last edited by vishnu
                #8

                @p3c0
                I just tried in main.cpp but I ended with the following error.

                ASSERT: "!isEmpty()" in file ....\Qt\Qt5.4.1\5.4\mingw491_32\include/QtCore/qlist.h, line 292
                Invalid parameter passed to C runtime function.
                Invalid parameter passed to C runtime function.

                Main.cpp

                int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    SetTableDataHandling  setTableDataHandling;
    auto root_context = engine.rootContext();
    root_context->setContextProperty("SetTableDataHandling",&setTableDataHandling);

    //********
    QObject* root = engine.rootObjects().first();
//    QObject* list = root->findChild<QObject*>("setTableView"); //get the ListView

//    QVariant qmlmodel = list->property("model"); //access model property of ListView
//    QAbstractListModel *model = qvariant_cast<QAbstractListModel *>(qmlmodel); //convert to QAbstractListModel

//    int rows = model->rowCount(); //get number of rows from model

//    //iterate through the model
//    for (int i = 0; i<rows; i++) {
//        for(int j = 0; j<model->roleNames().count(); j++) { //get the roles count
//            qDebug() <<  model->index(i, 0).data(j); //get the actual data using roles
//        }
//    }

    //
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    return app.exec();
}
                p3c0P 1 Reply Last reply
                0
                • vishnuV vishnu

                  @p3c0
                  I just tried in main.cpp but I ended with the following error.

                  ASSERT: "!isEmpty()" in file ....\Qt\Qt5.4.1\5.4\mingw491_32\include/QtCore/qlist.h, line 292
                  Invalid parameter passed to C runtime function.
                  Invalid parameter passed to C runtime function.

                  Main.cpp

                  int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    SetTableDataHandling  setTableDataHandling;
    auto root_context = engine.rootContext();
    root_context->setContextProperty("SetTableDataHandling",&setTableDataHandling);

    //********
    QObject* root = engine.rootObjects().first();
//    QObject* list = root->findChild<QObject*>("setTableView"); //get the ListView

//    QVariant qmlmodel = list->property("model"); //access model property of ListView
//    QAbstractListModel *model = qvariant_cast<QAbstractListModel *>(qmlmodel); //convert to QAbstractListModel

//    int rows = model->rowCount(); //get number of rows from model

//    //iterate through the model
//    for (int i = 0; i<rows; i++) {
//        for(int j = 0; j<model->roleNames().count(); j++) { //get the roles count
//            qDebug() <<  model->index(i, 0).data(j); //get the actual data using roles
//        }
//    }

    //
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    return app.exec();
}
                  p3c0P Offline
                  p3c0P Offline
                  p3c0
                  Moderators
                  wrote on last edited by p3c0
                  #9

                  @vishnu
                  QObject* root = engine.rootObjects().first();
                  do this after loading the QML.

                  But how do i get engine which is instanstiated in main.cpp to the function where I have to handle the data? Because engine is not declared in this scope right? Thanks

                  Pass the pointer or reference of engine to that function.

                  157

                  vishnuV 3 Replies Last reply
                  1
                  • p3c0P p3c0

                    @vishnu
                    QObject* root = engine.rootObjects().first();
                    do this after loading the QML.

                    But how do i get engine which is instanstiated in main.cpp to the function where I have to handle the data? Because engine is not declared in this scope right? Thanks

                    Pass the pointer or reference of engine to that function.

                    vishnuV Offline
                    vishnuV Offline
                    vishnu
                    wrote on last edited by
                    #10

                    @p3c0
                    Man!!! you're are awesome awesomeeeee!!!! Thanks a lot.

                    1 Reply Last reply
                    0
                    • p3c0P p3c0

                      @vishnu
                      QObject* root = engine.rootObjects().first();
                      do this after loading the QML.

                      But how do i get engine which is instanstiated in main.cpp to the function where I have to handle the data? Because engine is not declared in this scope right? Thanks

                      Pass the pointer or reference of engine to that function.

                      vishnuV Offline
                      vishnuV Offline
                      vishnu
                      wrote on last edited by vishnu
                      #11

                      @p3c0
                      May I know why the roles and data are in reverse order?
                      What i get is:
                      "tracking_z"
                      "tracking_y"
                      "tracking_x"
                      "deceleration"
                      "velocity"
                      "z_position"
                      "y_position"
                      "x_position"
                      But it should be in reverse order.
                      what i expect the data at
                      qDebug() << model->index(i, 0).data(j)
                      is the first row and first column from left side of TableView. But It is starting from right side. How do I make it correct?Thanks

                      p3c0P 1 Reply Last reply
                      0
                      • vishnuV vishnu

                        @p3c0
                        May I know why the roles and data are in reverse order?
                        What i get is:
                        "tracking_z"
                        "tracking_y"
                        "tracking_x"
                        "deceleration"
                        "velocity"
                        "z_position"
                        "y_position"
                        "x_position"
                        But it should be in reverse order.
                        what i expect the data at
                        qDebug() << model->index(i, 0).data(j)
                        is the first row and first column from left side of TableView. But It is starting from right side. How do I make it correct?Thanks

                        p3c0P Offline
                        p3c0P Offline
                        p3c0
                        Moderators
                        wrote on last edited by
                        #12

                        @vishnu That is completely internal. The processing of roles and properties by the engine cannot be controlled.
                        To correct it the only way is to read the properties in reverse order in the loop :)

                        157

                        1 Reply Last reply
                        0
                        • p3c0P p3c0

                          @vishnu
                          QObject* root = engine.rootObjects().first();
                          do this after loading the QML.

                          But how do i get engine which is instanstiated in main.cpp to the function where I have to handle the data? Because engine is not declared in this scope right? Thanks

                          Pass the pointer or reference of engine to that function.

                          vishnuV Offline
                          vishnuV Offline
                          vishnu
                          wrote on last edited by vishnu
                          #13

                          @p3c0
                          I am still getting the error.
                          ASSERT: "!isEmpty()" in file ......\Qt5.4.1\5.4\mingw491_32\include/QtCore/qlist.h, line 292
                          Invalid parameter passed to C runtime function.
                          Invalid parameter passed to C runtime function.
                          My main.cpp:

                          int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    QQmlApplicationEngine engine;
    TCPCommunicationPort tcpCommunicationPort;
    auto root_context = engine.rootContext();
    root_context->setContextProperty("tcpCommunicationPort",&tcpCommunicationPort);
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    QObject* root = engine.rootObjects().first();// error at this point
    return app.exec();
}

                          The same main code was working fine in another project but When i copied the same in new project it's again saying the same error. I have loaded main.qml before
                          QObject* root = engine.rootObjects().first();
                          May i know what's the mistake?

                          p3c0P 1 Reply Last reply
                          0
                          • vishnuV vishnu

                            @p3c0
                            I am still getting the error.
                            ASSERT: "!isEmpty()" in file ......\Qt5.4.1\5.4\mingw491_32\include/QtCore/qlist.h, line 292
                            Invalid parameter passed to C runtime function.
                            Invalid parameter passed to C runtime function.
                            My main.cpp:

                            int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    QQmlApplicationEngine engine;
    TCPCommunicationPort tcpCommunicationPort;
    auto root_context = engine.rootContext();
    root_context->setContextProperty("tcpCommunicationPort",&tcpCommunicationPort);
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    QObject* root = engine.rootObjects().first();// error at this point
    return app.exec();
}

                            The same main code was working fine in another project but When i copied the same in new project it's again saying the same error. I have loaded main.qml before
                            QObject* root = engine.rootObjects().first();
                            May i know what's the mistake?

                            p3c0P Offline
                            p3c0P Offline
                            p3c0
                            Moderators
                            wrote on last edited by
                            #14

                            @vishnu Can you post the QML part ? i.e main.qml

                            157

                            vishnuV 1 Reply Last reply
                            0
                            • p3c0P p3c0

                              @vishnu Can you post the QML part ? i.e main.qml

                              vishnuV Offline
                              vishnuV Offline
                              vishnu
                              wrote on last edited by vishnu
                              #15

                              @p3c0
                              main.qml

                              import QtQuick 2.3
import QtQuick.Window 2.2
import QtQuick.Controls 1.3

Window{
    id:window
    width: Screen.width
    height: Screen.height
    visible: true

    Item{
        id:mainUI
        anchors.fill: parent
        Header{
            id:header
        }
        CentralView{
            id:centralView
            anchors.top: header.bottom
            anchors.bottom: footer.top
        }
        //Model
        SetTable{
            id:setTable
            anchors.top: header.bottom
            anchors.bottom: footer.top
            visible: false
        }
        Footer {
            id: footer
            anchors.bottom: parent.bottom
        }
        states: [
            State {
                name: "MainView"
                PropertyChanges {target: centralView;cycRegVisible:false; ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:false; }
            },
            //setTable view state
            State {
                name: "SetTableView"
                PropertyChanges {target: centralView;centralViewVisible:false;}
                PropertyChanges {target: setTable;visible:true;}
                PropertyChanges {target: footer;forwardButtonvisible:false;}
            },
            State {
                name: "CyclicRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:true }
                PropertyChanges {target: footer;backButtonvisible:true}
                PropertyChanges {target: centralView;ctrlReg1Visible:false }
                PropertyChanges {target: centralView;ctrlReg2Visible:false }
                PropertyChanges {target: centralView;cmodeRegVisible:false }
                PropertyChanges {target: centralView;directModeRegVisible:false }
                PropertyChanges {target: centralView;trackingModeRegVisible:false }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "ControlRegister1View"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:true;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;trackingModeRegVisible:false }
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "ControlRegister2View"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:true;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;trackingModeRegVisible:false }
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "OperationModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:true;directModeRegVisible:false }
                PropertyChanges {target: centralView;trackingModeRegVisible:false ;homingModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "DirectModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:true}
                PropertyChanges {target: centralView;trackingModeRegVisible:false ;homingModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "SetTableModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:true;trackingModeRegVisible:false;homingModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "TrackingModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:true;homingModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "HomingModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:true}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "JoggingModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:true}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "SAcyclicRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:true }
            },
            State {
                name: "StatusRegister1View"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;statusReg1Visible:true }
            },
            State {
                name: "StatusRegister2View"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;statusReg2Visible:true }
            },
            State {
                name: "StatusRegister3View"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;statusReg3Visible:true }
            },
            State {
                name: "SOperationModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sOperationRegVisible:true }
            },
            State {
                name: "SDirectModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sDirectModeRegVisible:true }
            },
            State {
                name: "SSetTableModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sSetTableModeRegVisible:true }
            },
            State {
                name: "STrackingModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sTtrackingModeRegVisible:true }
            },
            State {
                name: "SHomingRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sHomingModeRegVisible:true }
            },
            State {
                name: "SJoggingRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sJogginModeRegVisible:true }
            }
        ]
        state: "MainView"
        Connections{
            target: centralView;
            onAcyclicButtonClicked:{
                //                console.log("switching to CyclicRegisterView")
                mainUI.state="CyclicRegisterView"

            }
            onControlRegister1ButtonClicked:{
                //                console.log("switching to Control Register1View")
                mainUI.state="ControlRegister1View"
            }
            onControlRegister2ButtonClicked:{
                //                console.log("switching to Control Register2View")
                mainUI.state="ControlRegister2View"
            }
            onOperationModeRegisterClicked:{
                //                console.log("switching to CMODE or operation mode register view")
                mainUI.state="OperationModeRegisterView"
            }
            onDirectModeRegisterClicked:{
                //                console.log("switching to direct mode register view")
                mainUI.state="DirectModeRegisterView"
            }
            onSetTableModeRegisterClicked:{
                //                console.log("switching to settable mode register view")
                mainUI.state="SetTableModeRegisterView"
            }
            onTrackingModeRegisterClicked:{
                //                console.log("switching to trakingmode register view")
                mainUI.state="TrackingModeRegisterView"
            }
            onHomingModeRegisterClicked:{
                //                console.log("switching to homing register view")
                mainUI.state="HomingModeRegisterView"
            }
            onJoggingModeRegisterClicked:{
                //                console.log("switching to joggin register view")
                mainUI.state="JoggingModeRegisterView"
            }
            onSAcyclicButtonClicked:{
                //                console.log("switching to display acyclic register view")
                mainUI.state="SAcyclicRegisterView"
            }
            onSStatusRegister1ButtonClicked:{
                mainUI.state="StatusRegister1View"
            }
            onSStatusRegister2ButtonClicked:{
                mainUI.state="StatusRegister2View"
            }
            onSStatusRegister3ButtonClicked:{
                mainUI.state="StatusRegister3View"
            }
            onSOperationModeRegisterClicked:{
                mainUI.state="SOperationModeRegisterView"
            }
            onSDirectModeRegisterClicked:{
                mainUI.state="SDirectModeRegisterView"
            }
            onSSetTableModeRegisterClicked:{
                mainUI.state="SSetTableModeRegisterView"
            }
            onSTrackingModeRegisterClicked:{
                mainUI.state="STrackingModeRegisterView"
            }
            onSHomingModeRegisterClicked:{
                mainUI.state="SHomingRegisterView"
            }
            onSJoggingModeRegisterClicked:{
                mainUI.state="SJoggingRegisterView"
            }
        }
        Connections{
            target: footer
            onBackButtoncliked:{
                //                console.log("switching to MainView")
                mainUI.state="MainView"
            }
            onForwardButtonClicked:{
                mainUI.state="SetTableView"
            }
        }
    }
}

                              Sorry for the lengthy one. my model is in SetTable.qml

                              import QtQuick 2.3
import QtQuick.Window 2.2
import QtQuick.Controls 1.3
import QtQuick.Layouts 1.1
Rectangle {
    id:root
    anchors.fill: parent
    Row{
        id:buttons
        anchors.top: root.top
        Button{
            id:addNewRowButton
            text: "ADD"
            onClicked: {
                setTableModel.append({x_position: 0,
                                         y_position:0,
                                         z_position:0,
                                         velocity :0,
                                         acceleration:0,
                                         deceleration:0,
                                         tool:0,
                                         tracking_x:0,
                                         tracking_y:0,
                                         tracking_z:0}
                                     )
            }
        }
        Button{
            id:deleteRowButton
            text: "DELETE"
            onClicked: {
                setTableModel.remove(setTableView.currentRow)
            }
        }

    }
    ListModel{
        id:setTableModel

        ListElement{
            x_position: 1000
            y_position: 200
            z_position: 300
            velocity: 28
            acceleration:34
            deceleration:14
            tool:1
            tracking_x: 400
            tracking_y:500
            tracking_z:5
        }
        ListElement{
            x_position: 1000
            y_position: 200
            z_position: 300
            velocity: 28
            acceleration:34
            deceleration:14
            tool:1
            tracking_x: 400
            tracking_y:500
            tracking_z:5
        }
        ListElement{
            x_position: 100
            y_position: 200
            z_position: 300
            velocity: 28
            acceleration:34
            deceleration:14
            tool:1
            tracking_x: 400
            tracking_y:500
            tracking_z:555
        }
    }

    TableView{
        id:setTableView
        objectName: "setTableView"
        model: setTableModel
        width: parent.width
        height: parent.height-buttons.height
        Layout.minimumWidth: 400
        Layout.minimumHeight: 240
        Layout.preferredWidth: 600
        Layout.preferredHeight: 400
        anchors.top: buttons.bottom
        TableViewColumn {
            role: "x_position"
            title: "X mm"
            width: 80
        }
        TableViewColumn {
            role: "y_position"
            title: "Y mm"
            width: 80
        }
        TableViewColumn {
            role: "z_position"
            title: "Z mm"
            width: 80
        }
        TableViewColumn {
            role: "velocity"
            title: "V m/s"
            width: 80
        }
        TableViewColumn {
            role: "acceleration"
            title: "A m/s2"
            width: 80
        }
        TableViewColumn {
            role: "deceleration"
            title: "D m/s2"
            width: 80
        }
        TableViewColumn {
            role: "tool"
            title: "Tool"
            width: 80
            delegate:
                TextInput {
                anchors.left: parent.left
                anchors.verticalCenter: parent.verticalCenter
                renderType: Text.NativeRendering
                validator: IntValidator {bottom: 0; top: 1;}
                text: styleData.value
            }
        }

        TableViewColumn {
            role: "tracking_x"
            title: "Tx mm"
            width: 80
        }
        TableViewColumn {
            role: "tracking_y"
            title: "Ty mm"
            width: 80
        }
        TableViewColumn {
            role: "tracking_z"
            title: "Tz mm"
            width: 80
        }
        itemDelegate: Item {
            TextInput {
                anchors.left: parent.left
                anchors.verticalCenter: parent.verticalCenter
                renderType: Text.NativeRendering
                text: styleData.value
            }
        }
    }
}

                              But the same piece of code as main.cpp is working fine in another project. I think something is wrong with my main.qml. May i know what's the mistake? Thanks

                              p3c0P 1 Reply Last reply
                              0
                              • vishnuV vishnu

                                @p3c0
                                main.qml

                                import QtQuick 2.3
import QtQuick.Window 2.2
import QtQuick.Controls 1.3

Window{
    id:window
    width: Screen.width
    height: Screen.height
    visible: true

    Item{
        id:mainUI
        anchors.fill: parent
        Header{
            id:header
        }
        CentralView{
            id:centralView
            anchors.top: header.bottom
            anchors.bottom: footer.top
        }
        //Model
        SetTable{
            id:setTable
            anchors.top: header.bottom
            anchors.bottom: footer.top
            visible: false
        }
        Footer {
            id: footer
            anchors.bottom: parent.bottom
        }
        states: [
            State {
                name: "MainView"
                PropertyChanges {target: centralView;cycRegVisible:false; ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:false; }
            },
            //setTable view state
            State {
                name: "SetTableView"
                PropertyChanges {target: centralView;centralViewVisible:false;}
                PropertyChanges {target: setTable;visible:true;}
                PropertyChanges {target: footer;forwardButtonvisible:false;}
            },
            State {
                name: "CyclicRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:true }
                PropertyChanges {target: footer;backButtonvisible:true}
                PropertyChanges {target: centralView;ctrlReg1Visible:false }
                PropertyChanges {target: centralView;ctrlReg2Visible:false }
                PropertyChanges {target: centralView;cmodeRegVisible:false }
                PropertyChanges {target: centralView;directModeRegVisible:false }
                PropertyChanges {target: centralView;trackingModeRegVisible:false }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "ControlRegister1View"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:true;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;trackingModeRegVisible:false }
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "ControlRegister2View"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:true;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;trackingModeRegVisible:false }
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "OperationModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:true;directModeRegVisible:false }
                PropertyChanges {target: centralView;trackingModeRegVisible:false ;homingModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "DirectModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:true}
                PropertyChanges {target: centralView;trackingModeRegVisible:false ;homingModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "SetTableModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:true;trackingModeRegVisible:false;homingModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "TrackingModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:true;homingModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "HomingModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:true}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "JoggingModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:true}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:false }
            },
            State {
                name: "SAcyclicRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:true }
            },
            State {
                name: "StatusRegister1View"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;statusReg1Visible:true }
            },
            State {
                name: "StatusRegister2View"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;statusReg2Visible:true }
            },
            State {
                name: "StatusRegister3View"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;statusReg3Visible:true }
            },
            State {
                name: "SOperationModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sOperationRegVisible:true }
            },
            State {
                name: "SDirectModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sDirectModeRegVisible:true }
            },
            State {
                name: "SSetTableModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sSetTableModeRegVisible:true }
            },
            State {
                name: "STrackingModeRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sTtrackingModeRegVisible:true }
            },
            State {
                name: "SHomingRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sHomingModeRegVisible:true }
            },
            State {
                name: "SJoggingRegisterView"
                PropertyChanges {target: centralView;cycRegVisible:false;ctrlReg1Visible:false;ctrlReg2Visible:false;cmodeRegVisible:false;directModeRegVisible:false}
                PropertyChanges {target: centralView;setTableModeRegVisible:false;trackingModeRegVisible:false;homingModeRegVisible:false;jogginModeRegVisible:false}
                PropertyChanges {target: footer;backButtonvisible:true; }
                PropertyChanges {target: centralView;displayViewVisible:true;controlViewVisible:false;sAcycRegVisible:false;sJogginModeRegVisible:true }
            }
        ]
        state: "MainView"
        Connections{
            target: centralView;
            onAcyclicButtonClicked:{
                //                console.log("switching to CyclicRegisterView")
                mainUI.state="CyclicRegisterView"

            }
            onControlRegister1ButtonClicked:{
                //                console.log("switching to Control Register1View")
                mainUI.state="ControlRegister1View"
            }
            onControlRegister2ButtonClicked:{
                //                console.log("switching to Control Register2View")
                mainUI.state="ControlRegister2View"
            }
            onOperationModeRegisterClicked:{
                //                console.log("switching to CMODE or operation mode register view")
                mainUI.state="OperationModeRegisterView"
            }
            onDirectModeRegisterClicked:{
                //                console.log("switching to direct mode register view")
                mainUI.state="DirectModeRegisterView"
            }
            onSetTableModeRegisterClicked:{
                //                console.log("switching to settable mode register view")
                mainUI.state="SetTableModeRegisterView"
            }
            onTrackingModeRegisterClicked:{
                //                console.log("switching to trakingmode register view")
                mainUI.state="TrackingModeRegisterView"
            }
            onHomingModeRegisterClicked:{
                //                console.log("switching to homing register view")
                mainUI.state="HomingModeRegisterView"
            }
            onJoggingModeRegisterClicked:{
                //                console.log("switching to joggin register view")
                mainUI.state="JoggingModeRegisterView"
            }
            onSAcyclicButtonClicked:{
                //                console.log("switching to display acyclic register view")
                mainUI.state="SAcyclicRegisterView"
            }
            onSStatusRegister1ButtonClicked:{
                mainUI.state="StatusRegister1View"
            }
            onSStatusRegister2ButtonClicked:{
                mainUI.state="StatusRegister2View"
            }
            onSStatusRegister3ButtonClicked:{
                mainUI.state="StatusRegister3View"
            }
            onSOperationModeRegisterClicked:{
                mainUI.state="SOperationModeRegisterView"
            }
            onSDirectModeRegisterClicked:{
                mainUI.state="SDirectModeRegisterView"
            }
            onSSetTableModeRegisterClicked:{
                mainUI.state="SSetTableModeRegisterView"
            }
            onSTrackingModeRegisterClicked:{
                mainUI.state="STrackingModeRegisterView"
            }
            onSHomingModeRegisterClicked:{
                mainUI.state="SHomingRegisterView"
            }
            onSJoggingModeRegisterClicked:{
                mainUI.state="SJoggingRegisterView"
            }
        }
        Connections{
            target: footer
            onBackButtoncliked:{
                //                console.log("switching to MainView")
                mainUI.state="MainView"
            }
            onForwardButtonClicked:{
                mainUI.state="SetTableView"
            }
        }
    }
}

                                Sorry for the lengthy one. my model is in SetTable.qml

                                import QtQuick 2.3
import QtQuick.Window 2.2
import QtQuick.Controls 1.3
import QtQuick.Layouts 1.1
Rectangle {
    id:root
    anchors.fill: parent
    Row{
        id:buttons
        anchors.top: root.top
        Button{
            id:addNewRowButton
            text: "ADD"
            onClicked: {
                setTableModel.append({x_position: 0,
                                         y_position:0,
                                         z_position:0,
                                         velocity :0,
                                         acceleration:0,
                                         deceleration:0,
                                         tool:0,
                                         tracking_x:0,
                                         tracking_y:0,
                                         tracking_z:0}
                                     )
            }
        }
        Button{
            id:deleteRowButton
            text: "DELETE"
            onClicked: {
                setTableModel.remove(setTableView.currentRow)
            }
        }

    }
    ListModel{
        id:setTableModel

        ListElement{
            x_position: 1000
            y_position: 200
            z_position: 300
            velocity: 28
            acceleration:34
            deceleration:14
            tool:1
            tracking_x: 400
            tracking_y:500
            tracking_z:5
        }
        ListElement{
            x_position: 1000
            y_position: 200
            z_position: 300
            velocity: 28
            acceleration:34
            deceleration:14
            tool:1
            tracking_x: 400
            tracking_y:500
            tracking_z:5
        }
        ListElement{
            x_position: 100
            y_position: 200
            z_position: 300
            velocity: 28
            acceleration:34
            deceleration:14
            tool:1
            tracking_x: 400
            tracking_y:500
            tracking_z:555
        }
    }

    TableView{
        id:setTableView
        objectName: "setTableView"
        model: setTableModel
        width: parent.width
        height: parent.height-buttons.height
        Layout.minimumWidth: 400
        Layout.minimumHeight: 240
        Layout.preferredWidth: 600
        Layout.preferredHeight: 400
        anchors.top: buttons.bottom
        TableViewColumn {
            role: "x_position"
            title: "X mm"
            width: 80
        }
        TableViewColumn {
            role: "y_position"
            title: "Y mm"
            width: 80
        }
        TableViewColumn {
            role: "z_position"
            title: "Z mm"
            width: 80
        }
        TableViewColumn {
            role: "velocity"
            title: "V m/s"
            width: 80
        }
        TableViewColumn {
            role: "acceleration"
            title: "A m/s2"
            width: 80
        }
        TableViewColumn {
            role: "deceleration"
            title: "D m/s2"
            width: 80
        }
        TableViewColumn {
            role: "tool"
            title: "Tool"
            width: 80
            delegate:
                TextInput {
                anchors.left: parent.left
                anchors.verticalCenter: parent.verticalCenter
                renderType: Text.NativeRendering
                validator: IntValidator {bottom: 0; top: 1;}
                text: styleData.value
            }
        }

        TableViewColumn {
            role: "tracking_x"
            title: "Tx mm"
            width: 80
        }
        TableViewColumn {
            role: "tracking_y"
            title: "Ty mm"
            width: 80
        }
        TableViewColumn {
            role: "tracking_z"
            title: "Tz mm"
            width: 80
        }
        itemDelegate: Item {
            TextInput {
                anchors.left: parent.left
                anchors.verticalCenter: parent.verticalCenter
                renderType: Text.NativeRendering
                text: styleData.value
            }
        }
    }
}

                                But the same piece of code as main.cpp is working fine in another project. I think something is wrong with my main.qml. May i know what's the mistake? Thanks

                                p3c0P Offline
                                p3c0P Offline
                                p3c0
                                Moderators
                                wrote on last edited by
                                #16

                                @vishnu No idea. Seems closer to this QTBUG-44859.
                                Can you try trimming down the main.qml i.e removing some component and then executing ?

                                157

                                vishnuV 1 Reply Last reply
                                0
                                • p3c0P p3c0

                                  @vishnu No idea. Seems closer to this QTBUG-44859.
                                  Can you try trimming down the main.qml i.e removing some component and then executing ?

                                  vishnuV Offline
                                  vishnuV Offline
                                  vishnu
                                  wrote on last edited by
                                  #17

                                  @p3c0
                                  Okay, Any other way to access the TableView model in C++ side?

                                  p3c0P 1 Reply Last reply
                                  0
                                  • vishnuV vishnu

                                    @p3c0
                                    Okay, Any other way to access the TableView model in C++ side?

                                    p3c0P Offline
                                    p3c0P Offline
                                    p3c0
                                    Moderators
                                    wrote on last edited by
                                    #18

                                    @vishnu AFAIK. no. But that error is not related to TableView or ListModel.

                                    157

                                    vishnuV 1 Reply Last reply
                                    0
                                    • p3c0P p3c0

                                      @vishnu AFAIK. no. But that error is not related to TableView or ListModel.

                                      vishnuV Offline
                                      vishnuV Offline
                                      vishnu
                                      wrote on last edited by vishnu
                                      #19

                                      @p3c0
                                      Got it.The error was due to the wrong import statement in qml.
                                      Now How do I capture the changes?
                                      If reading the entire model is the solution (ofcourse not efficient).
                                      How can I call this public slot getModel when ever there is a change in TableView in qml? What is the signal I get from the model/view which tells me that there is a change ?

                                      void TCPCommunicationPort::getModel(QQmlApplicationEngine &engine)
{
    QObject* root = engine.rootObjects().first(); //get the root object as usual
    QObject* list = root->findChild<QObject*>("setTableView"); //get the ListView

    QVariant qmlmodel = list->property("model"); //access model property of ListView
    QAbstractListModel *model = qvariant_cast<QAbstractListModel *>(qmlmodel); //convert to QAbstractListModel
.....//data is handled here
                                      p3c0P 1 Reply Last reply
                                      0
                                      • vishnuV vishnu

                                        @p3c0
                                        Got it.The error was due to the wrong import statement in qml.
                                        Now How do I capture the changes?
                                        If reading the entire model is the solution (ofcourse not efficient).
                                        How can I call this public slot getModel when ever there is a change in TableView in qml? What is the signal I get from the model/view which tells me that there is a change ?

                                        void TCPCommunicationPort::getModel(QQmlApplicationEngine &engine)
{
    QObject* root = engine.rootObjects().first(); //get the root object as usual
    QObject* list = root->findChild<QObject*>("setTableView"); //get the ListView

    QVariant qmlmodel = list->property("model"); //access model property of ListView
    QAbstractListModel *model = qvariant_cast<QAbstractListModel *>(qmlmodel); //convert to QAbstractListModel
.....//data is handled here
                                        p3c0P Offline
                                        p3c0P Offline
                                        p3c0
                                        Moderators
                                        wrote on last edited by p3c0
                                        #20

                                        @vishnu As we casted it to QAbstractListModel we can connect to its signal dataChanged from C++. Thus when anything changes the slot will be called.

                                        QAbstractListModel *model = qvariant_cast<QAbstractListModel *>(qmlmodel);
QObject::connect(model,SIGNAL(dataChanged(QModelIndex,QModelIndex,QVector<int>)),
                     &myclass,SLOT(onDataChanged(QModelIndex,QModelIndex,QVector<int>)));

                                        Access the changed data in slot

                                        void MyClass::onDataChanged(const QModelIndex &topLeft, 
             const QModelIndex &bottomRight, const QVector<int> &roles)
{
    qDebug() << "Data Changed :" << topLeft.data(roles[0]) << topLeft.data(roles[1]);
}

                                        157

                                        vishnuV 1 Reply Last reply
                                        0
                                        • p3c0P p3c0

                                          @vishnu As we casted it to QAbstractListModel we can connect to its signal dataChanged from C++. Thus when anything changes the slot will be called.

                                          QAbstractListModel *model = qvariant_cast<QAbstractListModel *>(qmlmodel);
QObject::connect(model,SIGNAL(dataChanged(QModelIndex,QModelIndex,QVector<int>)),
                     &myclass,SLOT(onDataChanged(QModelIndex,QModelIndex,QVector<int>)));

                                          Access the changed data in slot

                                          void MyClass::onDataChanged(const QModelIndex &topLeft, 
             const QModelIndex &bottomRight, const QVector<int> &roles)
{
    qDebug() << "Data Changed :" << topLeft.data(roles[0]) << topLeft.data(roles[1]);
}
                                          vishnuV Offline
                                          vishnuV Offline
                                          vishnu
                                          wrote on last edited by vishnu
                                          #21

                                          @p3c0
                                          I don't know why but the SLOT is not called when the data changes.
                                          I did the connection in main itself.
                                          main.qml

                                          QQmlApplicationEngine engine;
    TCPCommunicationPort tcpCommunicationPort;
    auto root_context = engine.rootContext();
    root_context->setContextProperty("tcpCommunicationPort",&tcpCommunicationPort);
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
//    tcpCommunicationPort.getModel(engine);
    QObject* root = engine.rootObjects().first(); //get the root object as usual
    QObject* list = root->findChild<QObject*>("setTableView"); //get the ListView

    QVariant qmlmodel = list->property("model"); //access model property of ListView
    QAbstractListModel *model = qvariant_cast<QAbstractListModel *>(qmlmodel); //convert to QAbstractListModel

    QObject::connect(model,SIGNAL(dataChanged(QModelIndex,QModelIndex,QVector<int>)),
                         &tcpCommunicationPort,SLOT(onDataChanged(QModelIndex,QModelIndex,QVector<int>)));

                                          In header file

                                          public slots:
void onDataChanged(const QModelIndex &topLeft,
                            const QModelIndex &bottomRight, const QVector<int> &roles);

                                          May i know why the slot is not called?I even don't know whether the signal is raised or not.How to know whether the signal is emitted not in this case?

                                          p3c0P 1 Reply Last reply
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