Beautiful high-density displays are coming to Windows, and Windows 8.1 is ready for them—but what about your apps? This talk takes a deep dive into how Windows 8.1 scales different classes of desktop apps, and how the user can control system scaling behavior. You’ll learn how to write a new class of desktop apps capable of scaling their own content, window chrome, and input, and adapting to each display and to the user’s scaling settings. This session will focus on a sample app using C++, Win32, and Direct2D, with quick looks at Windows Presentation Foundation (WPF) apps and HTML website samples. Finally, it’ll cover specific techniques for scaling various kinds of content, including vector graphics, text, color fonts, SVG, and bitmaps.