Changed some of the parameter types which are unusable in VS2012/.NET 4.0 mode (the C++ compiler creates references to internal structs which are unusable from CLR code, making the type loader throw a TypeLoadException when trying to use the WebView).
This one is bothering me a bit more, since I'm mixing references and void* in a slightly funky way… Hard to test/verify since I couldn't manage to trigger the SetPopupSizeAndPosition to be called. :)
Uncomment the usage of the WebView now that it works again.