QModelIndex problem!

[landonmkelsey]

I incorporated the following example's methods into my code!

#include <QtCore>
      #include <QtGui>
 
      class Inserter : public QObject {
      public:
        Inserter(QStandardItemModel *m) : QObject() {
          model = m;
        }
      protected:
        void timerEvent(QTimerEvent *e){
          QString str = QDateTime::currentDateTime().toString();
          model->appendRow(new QStandardItem(str));
        }
      private:
        QStandardItemModel *model;
      };
 
      int main(int argc, char **argv){
        QApplication app(argc, argv);
        QStandardItemModel model;
        model.setColumnCount(1);
        QListView lv;
        lv.setModel(&model);
        lv.show();
        Inserter ins(&model);
        ins.startTimer(1000);
        return app.exec();
      }

#include <QtCore>
      #include <QtGui>

      class Inserter : public QObject {
      public:
        Inserter(QStandardItemModel *m) : QObject() {
          model = m;
        }
      protected:
        void timerEvent(QTimerEvent *e){
          QString str = QDateTime::currentDateTime().toString();
          model->appendRow(new QStandardItem(str));
        }
      private:
        QStandardItemModel *model;
      };

      int main(int argc, char **argv){
        QApplication app(argc, argv);
        QStandardItemModel model;
        model.setColumnCount(1);
        QListView lv;
        lv.setModel(&model);
        lv.show();
        Inserter ins(&model);
        ins.startTimer(1000);
        return app.exec();
      }

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The entries show up OK whilst in the vicinity of the starting code!

However off in a thread I am doing the same code:

QString qstr("landon 2nd");
 
        	                model->appendRow(new QStandardItem(qstr));

QString qstr("landon 2nd");

        	                model->appendRow(new QStandardItem(qstr));

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However, I get the following errors at run time and no entry:

QObject::connect: Cannot queue arguments of type 'QModelIndex'
(Make sure 'QModelIndex' is registered using qRegisterMetaType().)
QObject::connect: Cannot queue arguments of type 'QModelIndex'
(Make sure 'QModelIndex' is registered using qRegisterMetaType().)

QObject::connect: Cannot queue arguments of type 'QModelIndex'
(Make sure 'QModelIndex' is registered using qRegisterMetaType().)
QObject::connect: Cannot queue arguments of type 'QModelIndex'
(Make sure 'QModelIndex' is registered using qRegisterMetaType().)

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Somehow the thread is not connected to the QModelIndex used at the beginning

I am feverishly researching the matter whilst reading about MVC.

qRegisterMetaType<QString>(); --->>>didn't work!