Not able to add model to the main window..

[MKSPulok]

hi, I've the following code

mymodel.h

@#ifndef MYMODEL_H
#define MYMODEL_H

#include <QAbstractTableModel>

#include <QString>

const int COLS= 3;
const int ROWS= 3;

class MyModel : public QAbstractTableModel
{
Q_OBJECT
public:
MyModel(QObject *parent);
int rowCount(const QModelIndex &parent = QModelIndex()) const ;
int columnCount(const QModelIndex &parent = QModelIndex()) const;
QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
QVariant headerData(int section, Qt::Orientation orientation, int role) const;

 bool setData(const QModelIndex & index, const QVariant & value, int role = Qt::EditRole);
      Qt::ItemFlags flags(const QModelIndex & index) const ;

private:
QString m_gridData[ROWS][COLS]; //holds text entered into QTableView

signals:

      void editCompleted(const QString &);

};

#endif // MYMODEL_H
@

mymodel.cpp

@#include "mymodel.h"

MyModel::MyModel(QObject *parent)
:QAbstractTableModel(parent)
{
}

int MyModel::rowCount(const QModelIndex & /parent/) const
{
return 3;
}

int MyModel::columnCount(const QModelIndex & /parent/) const
{
return 3;
}

QVariant MyModel::data(const QModelIndex &index, int role) const
{
if (role == Qt::DisplayRole)
{
return QString("Row%1, Column%2")
.arg(index.row() + 1)
.arg(index.column() +1);
}
return QVariant();
}

QVariant MyModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role == Qt::DisplayRole)
{
//////////////////////////////////////////Column Name
if (orientation == Qt::Horizontal) {
switch (section)
{
case 0:
return QString("Column-1");
case 1:
return QString("Column-2");
case 2:
return QString("Column-3");
}
}

      /////////////////////////////////////////////Row Name

      if (orientation == Qt::Vertical) {
          switch (section)
          {
          case 0:
              return QString("Row-1");
          case 1:
              return QString("Row-2");
          case 2:
              return QString("Row-3");
          }
      }

  }

  return QVariant();

}

bool MyModel::setData(const QModelIndex & index, const QVariant & value, int role)
{
if (role == Qt::EditRole)
{
//save value from editor to member m_gridData
m_gridData[index.row()][index.column()] = value.toString();
//for presentation purposes only: build and emit a joined string
QString result;
for(int row= 0; row < ROWS; row++)
{
for(int col= 0; col < COLS; col++)
{
result += m_gridData[row][col] + " ";
}
}
emit editCompleted( result );
}
return true;
}

Qt::ItemFlags MyModel::flags(const QModelIndex & /index/) const
{
return Qt::ItemIsSelectable | Qt::ItemIsEditable | Qt::ItemIsEnabled ;
}
@

mainwindow.h

@#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QtGui/QTableView>
#include "mymodel.h"

#include <QMainWindow>

class MyModel;

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();

private:
Ui::MainWindow *ui;

MyModel* model;

};

#endif // MAINWINDOW_H
@

mainwindow.cpp

@#include "MainWindow.h"
#include "ui_MainWindow.h"
#include <QTableView>

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
model=new MyModel(this);
QTableView tableView;
tableView.setModel( &model );

}

MainWindow::~MainWindow()
{
delete ui;
}
@

and a main.cpp

@#include <QtGui/QApplication>
#include "MainWindow.h"

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();

return a.exec();

}
@

My task is to created model is attached in the main window.But My code gives me the following error..
1.no matching function for call to 'QTableView::setModel(MyModel**)'

tell me am I on the right track or not and how to remove that problem(any one plz help)

[derf_r]

hello

try to replace :
tableView.setModel( &model );
by
tableView.setModel( model );

frédéric

[goetz]

Your table view is created on the stack. As soon as the variable goes out of scpe - here: your constructor has finished - it is destroyed. Use a pointer and heap allocation:

@
QTableView *tableView = new QTableView(this);
tableView->setModel(model);
@

Also, make sure to make the view the central widget or add it to a layout.