Input and Output (I/O) are the essence of modern computer software. Qt allows us to display our data in many different ways that are both intuitive and engaging to the end users. Other than that, the event system that comes with Qt makes our life as a programmer a lot easier, as it tends to automatically capture the user inputs through the powerful signal-and-slot mechanism and in-response triggering custom-defined behaviors. Without Qt, we would have a hard time trying to figure out how to reinvent the proverbial wheel, and might eventually end up creating a less user-friendly product.
In this chapter, we have learned how to make use of the fantastic features that are provided by Qt—view widgets, dialog boxes, and file selection dialogs used to display important information to the users. Furthermore, we also went through a fun little project that taught us how...