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

Moving an object using keyboard controls

In this topic we'll be looking at is how to move an object in OpenGL using keyboard controls. Qt provides an easy way to detect keyboard events using virtual functions, namely keyPressEvent() and keyReleaseEvent(). We will be using the previous example and adding to it.

How to do it…

  1. Open up mainwindow.h and declare two floating point numbers called moveX and moveZ:

      QOpenGLContext* context;
      QOpenGLFunctions* openGLFunctions;
      float rotation;
      GLuint texID[1];
      float moveX;
      float moveZ;
  2. After that, declare the keyPressEvent() function, like so:

      explicit MainWindow(QWidget *parent = 0);
      void keyPressEvent(QKeyEvent *event);
  3. Then, open up mainwindow.cpp and set the default values for the two variables we just declared:

    MainWindow::MainWindow(QWidget *parent)
      QSurfaceFormat format;