I've been designing web applications for a few years, and am very
comfortable with rapid prototyping with DHTML/XML tools. A new project
involves designing for a C++ Windows MFC app, something I'm not very
familiar with at all. Are there any tools out there that make it easy to
throw together non-functional toolbars / dialogs very quickly and
easily, with control over layout (centering, padding, etc) or are HTML
or Flash still the only way to do hi-fi prototypes for this type of app?