I have two images--img1 and img2--and I would like to be able to compare both images. I would like to overlay them over each other with a slider which would let me see more of img1 or img2. Lastly, when I move in one image I would also like to move in the other img. This is what I have so far.
QGraphicsScene *scn = new QGraphicsScene( this );
ui->view->setScene( scn );
QPixmap *im = new QPixmap("P3C.jpg");
QPixmap *i = new QPixmap("result.jpg");
scn->addPixmap( *im );
scn->addPixmap(*i);