how to use xml configuration file to define mfc window

"MFC application as xml base app" is not a well defined term. Are you talking about this: http://visualstudiogallery.msdn.microsoft.com/1B69C9FE-E422-4799-9EB5-6AC7034C52E1? But this is one thing; and you are probably asking for something different. But what? Yet another DirectUI? Why?

What exactly should be "XML base"? Are you looking to create something like XAML? This would be quite possible, but it will work exactly as you want to design it. This is just work to be done; what may require some expert's advice? Any particular concerns?

—SA