I am using QGraphicsGridLayout in GraphicScene(class publicly inherited from QGraphicsScene)..

I have to place a QPushButton in column 1 of the QGraphicsGridLayout in all the rows. And want to place a QGraphicsItem into column 2 of each row..

I am able to see the two QPushButton one below another (after adding them in the QGraphicsGridLayout), but when i try to add the QGraphicsItem (GraphicsItem). they are placed at zero location of the scene.. And are not placed in the particular grid column location.

I don't want use the hard coded location (using setpos() ) for the QGraphicsItem. How can i do that?

Code snap shot:
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GraphicScene::GraphicScene(QWidget *parent)
{
setItemIndexMethod(QGraphicsScene::NoIndex);
setSceneRect(0, 0, 800, 1200);

graphics_scene_layout = new QGraphicsGridLayout();

QGraphicsProxyWidget *proxy_p_button_0 = new QGraphicsProxyWidget();
QGraphicsProxyWidget *proxy_p_button_1 = new QGraphicsProxyWidget();
QGraphicsProxyWidget *proxy_graphicsitem_0 = new QGraphicsProxyWidget();
QGraphicsProxyWidget *proxy_graphicsitem_1 = new QGraphicsProxyWidget();

QPushButton *p_button_0 = new QPushButton("-");
p_button_0->resize(20,20);

QPushButton *p_button_1 = new QPushButton("-");
p_button_1->resize(20,20);

proxy_p_button_0->setWidget(p_button_0);
proxy_p_button_1->setWidget(p_button_1);

p_button_0->show();
p_button_1->show();

graphics_scene_layout->addItem(proxy_p_button_0, 0, 0, Qt::AlignLeft | Qt::AlignTop);
graphics_scene_layout->addItem(proxy_p_button_1, 1, 0, Qt::AlignLeft | Qt::AlignTop);

GraphicsItem *item0 = new GraphicsItem(parent);
GraphicsItem *item1 = new GraphicsItem(parent);

proxy_graphicsitem_0->setGraphicsItem(item0);
proxy_graphicsitem_1->setGraphicsItem(item1);

graphics_scene_layout->addItem(proxy_graphicsitem_0, 0, 1);
graphics_scene_layout->addItem(proxy_graphicsitem_1, 1, 1);

QGraphicsWidget *form = new QGraphicsWidget;
form->setLayout(graphics_scene_layout);
this->addItem(form);
}

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Am i missing some thing?? I was expecting placing the item in correct gird row/column will take care of position in scene.

Thanks in Advance!