void WebView::dropEvent(QDropEvent *event)
    {
        if (event->mimeData()->hasUrls())
        {
            QList<QUrl> urls=event->mimeData()->urls();

            WebPage* p = (WebPage*)page();
            QStringList files;
            for (int i = 0; i < urls.size(); ++i)
                files << urls[i].toLocalFile();
            p->change_local_files(files);
        }
    }