"hitTestCOntent" function failed for <span> and <a> HTML Tags

I have implemented a code to get a name of html tag from webpage where user clicked.

To get tag name, I have used “hitTestContent” function. Below is the code which I used in Qt 4.8 demo browser:-

Code:

---

void WebView::mousePressEvent(QMouseEvent *event)
{
    m_page->m_pressedButtons = event->buttons();
    m_page->m_keyboardModifiers = event->modifiers();
    QWebView::mousePressEvent(event);
    QWebFrame *pFrame = m_page->frameAt(event->pos());
    QWebHitTestResult HitResult = pFrame->hitTestContent(event->pos());
    QWebElement WebElement = HitResult.element();
 
    if (!WebElement.isNull())  //Control does not enter in this loop for <span> tag
        {
            qDebug() << "Mouse Pressed:" << WebElement.localName() << WebElement.parent().localName();
        }
}

---

I am able to get almost all tag name when I clicked on webpage. But this code fails for <span> tag and <a> tag. I have checked this in Qt 4.7, but the result is same.
Please help to solve above problem.