Russian Qt Forum

#include <QApplication>
#include <QGraphicsRectItem>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QtGlobal>

#define CNCHILDS			1000
#define getrandom(min, max) ((qrand()%(int)(((max) + 1)-(min)))+ (min))

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);

	QGraphicsScene* pscene = new QGraphicsScene();
	QGraphicsRectItem* pMainRect = new QGraphicsRectItem; 

	QSizeF szChild(200, 40);
	pMainRect->setFlag(QGraphicsItem::ItemIsMovable);
	pMainRect->setRect(0,0, szChild.width(), CNCHILDS*szChild.height());
	pMainRect->setBrush(Qt::green);

	for (int i=0; i < CNCHILDS; i++)
	{
		QGraphicsRectItem* prcChild = new QGraphicsRectItem(pMainRect);
		prcChild->setRect(0, i*(szChild.height()), szChild.width(), szChild.height());
		prcChild->setBrush(QColor(
			getrandom(100,150),
			getrandom(100,150),
			getrandom(100,150)
			));
	}

	pscene->addItem(pMainRect);
	QGraphicsView* pview = new QGraphicsView;
	pview->setGeometry(50,50,800,600);
	pview->setScene(pscene);
	pview->show();

	a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
	a.exec();

	return 0;
}