QWebView Mouse click on scroll bar

[Mammamia]

Setup:

I have created a "MyWebView" class by inheriting from QWebView. I have also re-implemented the "mouseDoubleClikEvent()" of QWebView in which enlarged webview widget will be opened[working fine].
By default MyWebView will load the page "google.com" and if user double click on the web view it loads "wikipedia.com". This is working as expected.

Issue:

If I double click on any of the scroll bar or double click on the arrows associated with these scroll bars then I can see that the "mouseDoubleClikEvent" is getting executed.

Is there anyway I can prevent this calling on "mouseDoubleClikEvent" when user clicks on ScrollBars? I want the "mouseDoubleClikEvent" should get called only if user double clicks inside the webview.

Sample code:

mywebview.h
@
#ifndef MYWEBVIEW_H
#define MYWEBVIEW_H

#include <QtWebKit/QWebView>

class MyWebView : public QWebView
{
Q_OBJECT

public:
MyWebView(QWebView *parent = 0);
~MyWebView();

protected:
void mouseDoubleClickEvent(QMouseEvent *event);
};

#endif // MYWEBVIEW_H
@

mywebview.cpp
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#include "mywebview.h"
#include <QWebFrame>

MyWebView::MyWebView(QWebView *parent)
: QWebView(parent)
{
setUrl(QUrl("http://google.co.in"));
}

MyWebView::~MyWebView()
{

}

void MyWebView::mouseDoubleClickEvent(QMouseEvent *event)
{
setUrl(QUrl("http://wikipedia.org"));
}

@