[提问]如何将webengine打开的界面放入打印预览中打印 [复制链接]

void MainWindow::Printer()
{
    webView = new QWebEngineView(this);
    webView->load(QUrl("http://www.baidu.com"));


    QPrinter printer(QPrinter::HighResolution);
    QPrintPreviewDialog printPreDlg(&printer,this);
    connect(&printPreDlg, &QPrintPreviewDialog::paintRequested,
            [=, this](QPrinter* printer)
    {
        QPainter painter;
        if (! painter.begin(printer))
        {
            // failed to open file
            qWarning("failed to open file, is it writable?");
            return ;
        }
        QString text = "123123321";
        painter.drawText(10, painter.fontMetrics().height()*1, text);
        QPixmap img(":/html/logo.png");
        painter.drawPixmap(500,500,img);
        painter.end();
    });

    printPreDlg.exec();
}
可以简单调用打印预览，打印内容如何调用webengine内展示的界面

截屏

maxlogo:截屏 (2018-07-26 01:12) 

大哥，如何将这类格式的图片放到画布里打印出来呢；data:image/png;base64；
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAA7wAAANICAYAAADkQOM4AAAgAElEQVR4XuzdCZhUxbn/8bdn39h

maxlogo:截屏 (2018-07-26 01:12) 

已通过html，将图片生成data:image/png;base64地址，现在要做的就是把它绘制出来打印，怎么放到画布里呢；截屏的方式怕是不好定位，因为只需要一部分html界面；