How to view source of HTML in QWebView ?

[sonichy]

void MainWindow::viewSource()
{
QString s = ui->webView->page()->currentFrame()->toHtml();
QUrl url = ui->webView->url();
ui->webView->setHtml(s,url);
}
It has no effort.

[jsulm]

@sonichy Take a look at https://stackoverflow.com/questions/16783708/how-to-display-raw-html-code-in-pre-or-something-like-it-but-without-escaping-it
You need to prevent the HTML source code from being interpreted as HTML, so you need to create a new HTML string where you put your HTML source into <pre></pre>.

[sonichy]

@jsulm

I find the solution: change "<" to "&lt;" and ">" to "&gt;" before use <pre>.
QString s = ((QWebView*)(ui->tabWidget->currentWidget()))->page()->currentFrame()->toHtml();
s=s.replace("<", "&lt;");
s=s.replace(">", "&gt;");
s="<title>source</title><pre>"+s+"</pre>";
QUrl url = ((QWebView*)(ui->tabWidget->currentWidget()))->url();
newTab();
((QWebView*)(ui->tabWidget->currentWidget()))->setHtml(s,url);