The topic of application architecture rarely comes up in the context of Qt, because as Qt developers we tend to be more interested in the classes and objects (trees) than the application as a whole (forest). However, the architecture of a Qt Quick application is the difference between pain and joy. A good architecture makes C++ and QML integration seem natural, while a poor and muddled architecture makes it an exercise in frustration. Multilayered Architecture A multilayered software architecture is one that organizes different responsibilities into layers. Each layer has a broad...