#include <QImageReader>

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

    MainWindow w;

    /* 打印查询 QPixmap 支持的图片格式 */

    qDebug() << "Supported formats:" << QImageReader::supportedImageFormats();

    /* 配置背景图片 */

    QPixmap pixmap = QPixmap(":/Resourses/Picture001.jpg").scaled(w.size());

    QPalette palette(w.palette());

    palette.setBrush(QPalette::Background, QBrush(pixmap));

    w.setPalette(palette);
　　

    w.show();

    return a.exec();

}