Learn BlackBerry 10 App Development: A Cascades-Driven Approach

Chapter     3

C++, Qt, and Cascades

I have avoided discussing C++ until now and given you mostly a “QML/JavaScript” perspective of Cascades programming. My goal was to show you how easily you could quickly build applications using QML and JavaScript only, without even writing a single line of C++ code. By now you know enough about the Cascades programming model and it is time to look at what’s happening behind the scenes in the C++ world.

QML and JavaScript provide a quick and efficient way of declaratively designing your application’s UI and wiring some behavior for event handling. You will, however, reach a point where you will need to do some heavy lifting and implement core business logic in C++. The reasons for this can be manifold but ...