In the preceding chapter, we saw how to build interactive software based on the animation-loop architecture (typically, animated games) for desktops or for web browsers from a single set of source codes using the quicksilver framework. A drawback of this approach is that many input/output functions available on the desktop are not available on web browsers, and so a framework for web browsers does not necessarily provide as many features to desktop applications that are offered on desktop platforms, such as file storage.
In addition, when using the animation-loop architecture, it is quite awkward to get discrete input, such as mouse clicks, typed letters, or digits. For this, an event-driven ...
