QT C++ QImage 图片分割

QImageimage::iamgeItems(intx, inty)
{
intwidth=image.width();
intheight=image.height();
intcellWidth=width/x;
intcellHeight=height/y;
qDebug() <<width<<" "<<height<<" "<<cellWidth<<" "<<cellHeight;
for(inti=0 ;i<x; i++ )
    {
for (intj=0; j<y; j++) {
QRectrect(i*cellWidth,j*cellHeight, cellWidth,cellHeight);
qDebug() <<rect.x() <<" "<<rect.y() <<" "<<rect.width() <<" "<<rect.height();
returnimage.copy(rect);
        }
    }
}