title: Detecting tablet PC
body: <p>I have a .net winforms application which some users will run on Win7 tablets. For those users, I want to change certain UI elements to make pen input easier, while leaving those items alone for regular users. I've been able to find msdn docs on design guidelines for pen &amp; touch, and nitty gritty on e-ink and such, but nothing on just detecting "Does this machine support a stylus or touch". Any hints?</p>