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//! [0]
QPixmap* pp;
QPixmap p;
if ((pp=QPixmapCache::find("my_big_image", pm))) {
    p = *pp;
} else {
    p.load("bigimage.png");
    QPixmapCache::insert("my_big_image", new QPixmap(p));
}
painter->drawPixmap(0, 0, p);
//! [0]


//! [1]
QPixmap pm;
if (!QPixmapCache::find("my_big_image", &pm)) {
    pm.load("bigimage.png");
    QPixmapCache::insert("my_big_image", pm);
}
painter->drawPixmap(0, 0, pm);
//! [1]