Book Image

Qt5 C++ GUI Programming Cookbook - Second Edition

By : Lee Zhi Eng
Book Image

Qt5 C++ GUI Programming Cookbook - Second Edition

By: Lee Zhi Eng

Overview of this book

With the growing need to develop GUIs for multiple targets and multiple screens, improving the visual quality of your application becomes important so that it stands out from your competitors. With its cross-platform ability and the latest UI paradigms, Qt makes it possible to build intuitive, interactive, and user-friendly user interfaces for your applications. Qt5 C++ GUI Programming Cookbook, Second Edition teaches you how to develop functional and appealing user interfaces using the latest version of QT5 and C++. This book will help you learn a variety of topics such as GUI customization and animation, graphics rendering, implementing Google Maps, and more. You will also be taken through advanced concepts like asynchronous programming, event handling using signals and slots, network programming, various aspects of optimizing your application. By the end of the book, you will be confident to design and customize GUI applications that meet your clients' expectations and have an understanding of best practice solutions for common problems.
Table of Contents (15 chapters)

Creating a basic paint program

Since we have learned so much about the QPainter class and how to use it to display graphics onscreen, I guess it's time for us to do something fun with which we can put our knowledge into practice.

In this recipe, we will learn how to make a basic paint program that allows us to draw lines on a canvas with different brush sizes and colors. We will also learn how to use the QImage class and mouse events in order to construct the paint program.

How to do it...

Let's start our fun project through the following steps:

  1. Again, we start by creating a new Qt Widgets Application project and removing the tool bar and status bar. We will keep the menu bar this time.
  2. After that, set up the menu...