void Dialog::loadFromFile1()
{   
    ui.labelone->setText(tr("Select an image file"));
    QString fileName = QFileDialog::getOpenFileName(0, QString(), QString(),
                                        tr("Images (*.png *.xpm *.jpg)"));
    QImage image;
    image.load(fileName);
    ui.labelone->setPixmap(QPixmap::fromImage(image));
}   
我这么写有错么,是哪里出了问题 ,哪位大哥能帮帮忙。。。