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

You're reading from Cross-Platform Development with Qt 6 and Modern C++

Product type Book

Published in Jun 2021

Publisher Packt

ISBN-13 9781800204584

Pages 442 pages

Edition 1st Edition

Languages

Concepts

GUI Application Development

Author (1):

Nibedit Dey

Table of Contents (17) Chapters

Preface

1. Section 1: The Basics

2. Chapter 1: Introduction to Qt 6

3. Chapter 2: Introduction to Qt Creator

4. Chapter 3: GUI Design Using Qt Widgets

5. Chapter 4: Qt Quick and QML

6. Section 2: Cross-Platform Development

7. Chapter 5: Cross-Platform Development

8. Section 3: Advanced Programming, Debugging, and Deployment

9. Chapter 6: Signals and Slots

10. Chapter 7: Model View Programming

11. Chapter 8: Graphics and Animations

12. Chapter 9: Testing and Debugging

13. Chapter 10: Deploying Qt Applications

14. Chapter 11: Internationalization

15. Chapter 12: Performance Considerations

16. Other Books You May Enjoy

Performance considerations for Qt Widgets

The Qt Widgets module renders widgets utilizing the raster engine, a software renders using CPU rather than GPU. In most cases, it can provide the desired performance. However, the Qt Widgets module is very old and lacks the latest capabilities. Since QML is entirely hardware-accelerated, you should consider adopting it for your application's UI.

If your widgets don't need mouseTracking, tabletTracking, or similar event capturing, turn it off. Your application will use more CPU time as a result of this tracking. Maintain a smaller style sheet and keep it all in one style sheet instead of applying it to individual widgets. A large style sheet will take longer for Qt to process the information into the rendering system, which may affect the application's performance. Use custom styles instead of a style sheet as this can provide you better performance.

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Authors (1)

Nibedit Dey

Nibedit Dey is a software engineer turned serial entrepreneur with over a decade of experience in building complex software-based products with amazing user interfaces. Before starting his entrepreneurial journey, he worked for Larsen and Toubro and Tektronix in different R&D roles. He holds a bachelor's degree in biomedical engineering and a master's degree in digital design and embedded systems. Specializing in Qt and embedded technologies, his current role involves end-to-end ownership of products right from architecture to delivery. Currently, he manages two technology-driven product startups named ibrum technologies and AIDIA Health. He is a tech-savvy developer who is passionate about embracing new technologies.

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