Planning a large graphical application can seem like a daunting task, if you're thinking about all of the different users of your software and the varied devices it'll be used on. Or, it may seem quite straightforward if your ambitions can be realized by using standard design applications (such as Qt Creator or Glade for GTK+) that can generate code from a drag-and-drop interface. Unsurprisingly, creating a great user experience for your application interface will probably take a while to explore, plan, and design for the best result. The largest complexity is likely the navigation or overall layout of the application—we'll look first at layout techniques across multiple platforms.