This repository contains the source code for CallJS, an example program showing off some of the features available in the WinCairo port of WebKit.
You should be able to simply open the CallJS.sln solution and build it.
Please note that you need to make sure that you have the correct Visual Studio runtime libraries to go along with the pre-built WebKit.dll and JavaScriptCore.dll in the 'WebKitSDK' folder.
The current source build runs with a transparent WebView overlaying the entire screen. It plays a snowfall animation while you interact with the fields and buttons on the application.