From Forum Nokia Wiki

ID	...	Creation date	10 April 2009
Platform	S60 3rd Edition FP1, S60 3rd Edition FP2, S60 5th Edition	Tested on devices	S60 Emulator
Category	Qt for S60	Subcategory	Application

Keywords (APIs, classes, methods, functions): QGraphicsProxyWidget,QGraphicsScene,QGraphicsView,QLineEdit,QLabel

Introduction

The QGraphicsProxyWidget class provides a proxy layer for embedding a QWidget in a QGraphicsScene. QGraphicsProxyWidget embeds QWidget-based widgets, for example, a QPushButton, QFontComboBox, or even QFileDialog, into QGraphicsScene. It forwards events between the two objects and translates between QWidget's integer-based geometry and QGraphicsWidget's qreal-based geometry.

QGraphicsProxyWidget takes care of automatically embedding popup children of embedded widgets through creating a child proxy for each popup.

Preconditions

• Download and Install latest version Qt for Symbian - Installation packages which has links on how to install the latest version

Souce Code

Main.cpp

#include "proxywidget.h"
 
#include <QtGui>
#include <QApplication>
#include<QGroupBox>
#include<QFormLayout>
#include<QLabel>
#include<QLineEdit>
#include<QGraphicsScene>
#include<QGraphicsProxyWidget>
#include<QGraphicsView>
#include<QPushButton>
#include<QComboBox>
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
     QGroupBox *groupBox = new QGroupBox("Contact Details",this);
     QLabel *numberLabel = new QLabel("Telephone number",this);
     QLineEdit *numberEdit = new QLineEdit(this);
     QPushButton *but=new QPushButton("Helloooo",this);
     QFormLayout *layout = new QFormLayout;
     QComboBox *box=new QComboBox(this);
     box->addItem("Nokia");
     box->addItem("Qt for S60");
     box->addItem("Widget");
     box->addItem("N96");
     box->addItem("London");
     box->addItem("Finland");
     box->addItem("NewYork");
     box->addItem("Symbian");
     box->addItem("Paris");
     box->addItem("Budapest");
     layout->addRow(numberLabel, numberEdit);
     layout->addRow(but);
     layout->addRow(box);
     groupBox->setLayout(layout);
 
     QGraphicsScene scene;
     QGraphicsProxyWidget *proxy = scene.addWidget(groupBox);
     QGraphicsView view(&scene);
     view.show();
    return a.exec();
}

ScreenShot

Before Clicking The ComboBox

Note the changes in the scrollBar of the widget

More about QGraphicProxyWidget