Model Items do not updated

Hi,

in mainwindow

Code:

public slots:
	 void itemAded ( QStandardItem * );

Code:

MainWindow::MainWindow()
{
 
    mQOgreWidget = new QOgreWidget(this);
 
    setCentralWidget(mQOgreWidget);
 
  	createModel();
	 createDockWidget();
 
 
}

Code:

void MainWindow::createDockWidget()
{
listView = new QListView(dockWidgetContents_8);
    listView->setObjectName(QString::fromUtf8("listView"));
    listView->setGeometry(QRect(0, 0, 281, 290));
	listView->setModel( model );
	connect( model, SIGNAL( itemChanged( QStandardItem * )),
            this, SLOT( itemChanged( QStandardItem * )));
	connect( model, SIGNAL( itemAded( QStandardItem * )),
           mQOgreWidget, SLOT( itemAded( QStandardItem * )));
	 connect( mQOgreWidget, SIGNAL( itemAded( QStandardItem * )), this, SLOT( itemAded( QStandardItem * ) ));

in my class QOgrerenderWidget .h
i defined my sognal itemAded like that

Code:

public slots:
	   void add_object();
	   signals :
		   void itemAded( QStandardItem * );

in QOgrerenderWidget .cpp

Code:

void QOgreRenderWindow::mousePressEvent(QMouseEvent* evt)
    {
 
		if(evt->button() == Qt::LeftButton)
	{
               add_object();
}
}
void QOgreRenderWindow::add_object(double offsetX ,double offsetY)
{
  /////////////////////////////////////////////
code to add object
it work very good
///////////////////////////////////////////////////////
QStandardItem *item=new QStandardItem(QString ("Marker  %0").arg(nb));
emit itemAded(item);

and in Qogrewidget i make like that

Code:

QOgreRenderWindow * orw0 = new QOgreRenderWindow(QString("View2"),mSceneMgr,mRoot,nb_cam,wi0,hi0, mNode);

i can add the object with any problem
but the item do not added

edit :
problem is resolved when i add many view