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 performance optimization

Performance optimization is done to improve an application's performance. You may be wondering why this is necessary. There are many reasons why an application requires performance optimization. When there is a performance problem reported by your users or the quality assurance (QA) team, the developers may discover something affecting the overall application performance. This may occur due to underlying hardware limitations, poor implementation of code, or scalability challenges.

Optimization is part of the application development process. This can involve optimizing code for performance or optimization for memory usage. Optimization aims to optimize an application's behavior so that it satisfies the product requirements for speed, memory footprint, power usage, and so on. As a result, optimization is almost as crucial as coding functionality in the production phase. Customers may report performance problems as glitches, slow response...