Book Image

Getting Started with Qt 5

By : Benjamin Baka
Book Image

Getting Started with Qt 5

By: Benjamin Baka

Overview of this book

Qt is a cross-platform application framework and widget toolkit that is used to create GUI applications that can run on different hardware and operating systems. The main aim of this book is to introduce Qt to the reader. Through the use of simple examples, we will walk you through building blocks without focusing too much on theory. Qt is a popular tool that can be used for building a variety of applications, such as web browsers, media players such as VLC, and Adobe Photoshop. Following Qt installation and setup, the book dives straight into helping you create your first application. You will be introduced to Widgets, Qt's interface building block, and the many varieties that are available for creating GUIs. Next, Qt's core concept of signals and slots are well illustrated with sufficient examples. The book further teaches you how to create custom widgets, signals and slots, and how to communicate useful information via dialog boxes. To cap everything off, you will be taken through writing applications that can connect to databases in order to persist data. By the end of the book, you should be well equipped to start creating your own Qt applications and confident enough to pick up more advanced Qt techniques and materials to hone your skills.
Table of Contents (8 chapters)


In this chapter, we took a look at the core concept of signals and slots in Qt. After creating our first application, we looked at the various ways in which signals and slots can be connected.

We saw how to connect one signal from a widget to multiple slots. This is a typical way to set up signals and slots, especially when a change in the state of a widget has to be communicated to many other widgets.

To show how flexible signals and slots could be configured, we also looked at an example where multiple signals were connected to one slot of a widget. This type of arrangement is useful when different widgets can be used to achieve the same effect on a widget.

In Chapter 4, Implementing Windows and Dialog, we shall change our style of writing applications and study how to make full-blown window applications.