在没有NativeMethods的情况下，如何在给定hWnd的情况下找到窗口的位置/位置？

I'm currently working with WatiN, and finding it to be a great web browsing automation tool. However, as of the last release, it's screen capturing functionality seems to be lacking. I've come up with a workable solution for capturing screenshots from the screen (independently generating code similar to I'm currently working with WatiN, and finding i