Further improvements.

In the last step, we just have corrected a couple of minor details.
But there is lot of room for real improvement.
In the end you could have a perfectly capable browser of your own, that you could even used instead of your current browser.
The underlying technology is certainly impressive. QtWebKit is a really nice piece of code. It is based in turn in Webkit, an opensource browser engine used by Safari and Google Chrome (up to a point) among others.
You can use QtWebKit to create a browser with a huge number of features, like turning on/off java, javascript, plugins, cookies...
You could improve the MiniBrowser to use tabs, much like modern browsers do...
The tutorial finishes at this point, but if you want to improve the MiniBrowser and implement more capabilities, there go a couple advices:

That's all, I hope you have enjoyed the tutorial and, as they usually say at this point... happy coding!