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)

Drawing basic shapes onscreen

In this section, we will learn how to draw simple vector shapes (a line, a rectangle, a circle, and so on) and display text on the main window using the QPainter class. We will also learn how to change the drawing style of these vector shapes using the QPen class.

How to do it...

Let's follow the steps listed here to display basic shapes in our Qt window:

  1. First, let's create a new Qt Widgets Application project.
  2. Open up mainwindow.ui and remove the menuBar, mainToolBar, and statusBar objects so that we get a clean, empty main window. Right-click on the bar widgets and select Remove Menu Bar from the pop-up menu:
  1. Then, open up mainwindow.h file and add the following code to include...