As for me doing it? According to prior comments in this thread it's already done, although I haven't tested it so I don't know how complete it is. Adding UIA support to a framework is different from making that support good (screen readers can be very picky). As an example, say you have a label of an edit box. If you position the label just right within it's parent container a screen reader will pick it up automatically and just announce it as you focus the edit box. But if you don't, all you'll hear is "edit <contents|blank>". There are ways around this (e.g., you can override label detection) but the "ideal" state is that the screen reader picks up that stuff automatically and you just give it the bounds of the various controls and UI elements.