视频文件放在QClipboard上

  QClipboard *clipboard = QApplication::clipboard();

        QString name = "file:///" + fileInfo.filePath();

        QUrl a(name);

        qDebug() <<"mp4 filepath is " <<  name;

        QList urls;

        urls.append(a);

        QMimeData *data = new QMimeData;

        data->setUrls(urls);

        clipboard->setMimeData(data);