I want to save and retrive a QGraphicsScene

[c_srikanth1984]

Hi Friends,
I am working to creat an application where I need to have a scene where i am going to place QGraphicsItems on that scene dynamically then I need to save that scene and retrive that scene as a QGraphicsScene only wher user can modify the graphics Item again and save.
now my code for saving is

QFile file("fileName.dat");
file.open(QIODevice::WriteOnly);
QDataStream out(&file);
if(scene->items().isEmpty()) //scene is QGraphicsScene variable
    return 0;
else
    QList<QGraphicsItem *>itemsList=scene->items();
out<<itemsList;

QFile file("fileName.dat");
file.open(QIODevice::WriteOnly);
QDataStream out(&file);
if(scene->items().isEmpty()) //scene is QGraphicsScene variable
    return 0;
else
    QList<QGraphicsItem *>itemsList=scene->items();
out<<itemsList;

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My code for opening the saved file is

QString fileName=QFileDialog::getOpenFileName(this,tr("Open File"),QDir::currentPath()):
QFile file(fileName);
if(file.open(QIODevice::ReadOnly))
{
    QMessageBox::information(this,tr("Unable to open");
    return 0;
}
else
{
    QList<QGraphicsItem *>itemsList=scene->items();
    QDataStream in(&file);
    in>>itemsList;
    foreach(QGraphicsItem *item,itemList)
        scene->addItem(item);
    file.close();

QString fileName=QFileDialog::getOpenFileName(this,tr("Open File"),QDir::currentPath()):
QFile file(fileName);
if(file.open(QIODevice::ReadOnly))
{
    QMessageBox::information(this,tr("Unable to open");
    return 0;
}
else
{
    QList<QGraphicsItem *>itemsList=scene->items();
    QDataStream in(&file);
    in>>itemsList;
    foreach(QGraphicsItem *item,itemList)
        scene->addItem(item);
    file.close();

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Thats all logically I think I am Correct but I am Getting an error
"no match for 'operator>>' in 's>>t' in qdatastream.h

Plz help me friends where i am going wrong or is there any other method for my requirement.
with Regards,
srikanth