void EmfViewer::viewEmfFile(const QString& fileName)
{
QPixmap pix(QSize(500, 400));
pix.fill(QColor(Qt::transparent));
QPainter painter(&pix);
QEmf::QEmfRenderer renderer(painter, pix.size());
renderer.load(fileName);
QLabel *label = new QLabel;
label->setPixmap(pix);
label->show();
}