QT小程序：利用QGraphicsScene和QGraphicsView进行显示操作

#include <QApplication>


#include <qgraphicsview>
#include <QGraphicsScene>
#include <QGraphicsRectItem>
#include <QGraphicsPixmapItem>
#include <QString>


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


    QGraphicsPixmapItem*  myPix = new QGraphicsPixmapItem();
    //myPix->setPixmap(QString(":/timg.jpg"));
    myPix->setPixmap(QPixmap(":/timg.jpg"));
   
    QGraphicsRectItem* myRect = new QGraphicsRectItem();
    myRect->setRect(0, 0, 100, 100);
    myRect->setPos(200, 600);


    QGraphicsScene* scene = new QGraphicsScene();
    scene->addItem(myRect);
    scene->addItem(myPix);


    QGraphicsView* view = new QGraphicsView(scene);
    view->setFixedSize(600, 800);
    view->show();


    return a.exec();
}