Book Image

Qt5 C++ GUI Programming Cookbook

By : Lee Zhi Eng
Book Image

Qt5 C++ GUI Programming Cookbook

By: Lee Zhi Eng

Overview of this book

With the advancement of computer technology, the software market is exploding with tons of software choices for the user, making their expectations higher in terms of functionality and the look and feel of the application. Therefore, improving the visual quality of your application is vital in order to overcome the market competition and stand out from the crowd. This book will teach you how to develop functional and appealing software using Qt5 through multiple projects that are interesting and fun. This book covers a variety of topics such as look-and-feel customization, GUI animation, graphics rendering, implementing Google Maps, and more. You will learn tons of useful information, and enjoy the process of working on the creative projects provided in this book
Table of Contents (16 chapters)
Qt5 C++ GUI Programming Cookbook
About the Author
About the Reviewer

Applying image effects to graphics

Qt provides an easy way to add image effects to any graphics drawn using the QPainter class. In this example, we will learn how to apply different images effects, such as drop shadow, blur, colorize, and opacity effects, to a graphic before displaying it on screen.

How to do it…

Let's learn how to apply image effects to text and graphics by following these steps:

  1. Create a new Qt Widgets Application and remove the menu bar, tool bar, and status bar.

  2. Create a new resource file by going to File | New File or Project and adding all the images required by the project:

  3. Next, open up mainwindow.ui and add four labels to the window. Two of the labels will be text and the two others we will load with the images we have just added to the resource file:

  4. You may already notice the font sizes are way bigger than the default size. That can be achieved by adding a style sheet to the label widget, for example:

    font: 26pt "MS Shell Dlg 2";
  5. After that, open up mainwindow.cpp and...