printing QWebView before showing in Dialog

[Grisu]

Hi,

I'm trying to print a QWebview before it is showed in the Dialog

QString html = getHtmlString();   // Get the HTML String
	ui.webView->setHtml(html);       // set the Html string to the QWebView
 
	QPrinter printer;                       // Create the Printer
	printer.setOutputFormat(QPrinter::PdfFormat);
	printer.setPageSize(QPrinter::A4);
	printer.setOrientation(QPrinter::Landscape);
 
	QString fileName = QFileDialog::getSaveFileName(this, tr("Save File"),QCoreApplication::applicationDirPath(),tr("*.pdf")); 
	if(fileName.length()>0 ){
		printer.setOutputFileName(fileName);
		ui.webView->print(&printer);                    // print the QWebview
		QDesktopServices::openUrl(QUrl(fileName));
	}

QString html = getHtmlString();   // Get the HTML String
	ui.webView->setHtml(html);       // set the Html string to the QWebView

	QPrinter printer;                       // Create the Printer
	printer.setOutputFormat(QPrinter::PdfFormat);
	printer.setPageSize(QPrinter::A4);
	printer.setOrientation(QPrinter::Landscape);

	QString fileName = QFileDialog::getSaveFileName(this, tr("Save File"),QCoreApplication::applicationDirPath(),tr("*.pdf")); 
	if(fileName.length()>0 ){
		printer.setOutputFileName(fileName);
		ui.webView->print(&printer);                    // print the QWebview
		QDesktopServices::openUrl(QUrl(fileName));
	}

To copy to clipboard, switch view to plain text mode 

The printed html pdf is always white.
If I print the webview by pressing a button after it has been shown on the Dialog there's text in the pdf.

Can anyone help me?

Thanks,

Grisu