Book Image

Cross-Platform Development with Qt 6 and Modern C++

By : Nibedit Dey
Book Image

Cross-Platform Development with Qt 6 and Modern C++

By: Nibedit Dey

Overview of this book

Qt is a cross-platform application development framework widely used for developing applications that can run on a wide range of hardware platforms with little to no change in the underlying codebase. If you have basic knowledge of C++ and want to build desktop or mobile applications with a modern graphical user interface (GUI), Qt is the right choice for you. Cross-Platform Development with Qt 6 and Modern C++ helps you understand why Qt is one of the favorite GUI frameworks adopted by industries worldwide, covering the essentials of programming GUI apps across a multitude of platforms using the standard C++17 and Qt 6 features. Starting with the fundamentals of the Qt framework, including the features offered by Qt Creator, this practical guide will show you how to create classic user interfaces using Qt Widgets and touch-friendly user interfaces using Qt Quick. As you advance, you'll explore the Qt Creator IDE for developing applications for multiple desktops as well as for embedded and mobile platforms. You will also learn advanced concepts about signals and slots. Finally, the book takes you through debugging and testing your app with Qt Creator IDE. By the end of this book, you'll be able to build cross-platform applications with a modern GUI along with the speed and power of native apps.
Table of Contents (17 chapters)
Section 1: The Basics
Section 2: Cross-Platform Development
Section 3: Advanced Programming, Debugging, and Deployment

Understanding the Qt OpenGL module

Qt Quick and Qt Widgets are the two main approaches to user interface (UI) development in Qt. They exist to support various types of UIs and are built on separate graphics engines that have been optimized for each of these. It is possible to combine OpenGL graphics API code with both of these UI types in Qt. This is useful when the application contains its own OpenGL-dependent code or when integrating with a third-party OpenGL-based renderer. The OpenGL/OpenGL ES XML API Registry is used to generate the OpenGL header.

The Qt OpenGL module is intended for use with applications that require OpenGL access. The convenience classes in the Qt OpenGL module help developers build applications more easily and faster. This module is responsible for maintaining compatibility with Qt 5 applications and Qt GUI. QOpenGLWidget is a widget that can add OpenGL scenes to UIs that use QWidget.

With the introduction of Qt RHI as the rendering foundation in Qt,...