QGraphicsView/Scene to png image

[nileshsince1980]

Hi All
My application consists of QGraphicsView/Scene with some shapes like rectange items.
I have option to save entire scene to an image file using following code

QGraphicsScene scene;
 
scene->addItem(rectItem);
scene->addItem(rectItem);
//.....
 
QImage img(1024,768,QImage::Format_ARGB32_Premultiplied);
QPainter p(&img);
scene.render(&p);
p.end();
img.save("scene.png");

QGraphicsScene scene;
 
scene->addItem(rectItem);
scene->addItem(rectItem);
//.....
 
QImage img(1024,768,QImage::Format_ARGB32_Premultiplied);
QPainter p(&img);
scene.render(&p);
p.end();
img.save("scene.png");

To copy to clipboard, switch view to plain text mode 

Image is gets saved propertly. but when I tried to zoom in GraphicsView by setting matrix. and then save the image, tthe image which I get is of initial scale level.
e..g Initial scale is 1 after zoom in say GraphicsView's scale becomes 2
but image (scene.png) is created with initial scale of 1.

Can any body tell what I missing ??
Thanks in advance.

Nilesh