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mainwindow.cpp Example File
demos/chip/mainwindow.cpp

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 #include "mainwindow.h"
 #include "view.h"
 #include "chip.h"

 #include <QtGui>

 MainWindow::MainWindow(QWidget *parent)
     : QWidget(parent)
 {
     populateScene();

     h1Splitter = new QSplitter;
     h2Splitter = new QSplitter;

     QSplitter *vSplitter = new QSplitter;
     vSplitter->setOrientation(Qt::Vertical);
     vSplitter->addWidget(h1Splitter);
     vSplitter->addWidget(h2Splitter);

     View *view = new View("Top left view");
     view->view()->setScene(scene);
     h1Splitter->addWidget(view);

     view = new View("Top right view");
     view->view()->setScene(scene);
     h1Splitter->addWidget(view);

     view = new View("Bottom left view");
     view->view()->setScene(scene);
     h2Splitter->addWidget(view);

     view = new View("Bottom right view");
     view->view()->setScene(scene);
     h2Splitter->addWidget(view);

     QHBoxLayout *layout = new QHBoxLayout;
     layout->addWidget(vSplitter);
     setLayout(layout);

     setWindowTitle(tr("Chip Demo"));
 }

 void MainWindow::populateScene()
 {
     scene = new QGraphicsScene;

     QImage image(":/qt4logo.png");

     // Populate scene
     int xx = 0;
     int nitems = 0;
     for (int i = -11000; i < 11000; i += 110) {
         ++xx;
         int yy = 0;
         for (int j = -7000; j < 7000; j += 70) {
             ++yy;
             qreal x = (i + 11000) / 22000.0;
             qreal y = (j + 7000) / 14000.0;

             QColor color(image.pixel(int(image.width() * x), int(image.height() * y)));
             QGraphicsItem *item = new Chip(color, xx, yy);
             item->setPos(QPointF(i, j));
             scene->addItem(item);

             ++nitems;
         }
     }
 }


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Qt 4.3.5