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Qt 6 C++ GUI Programming Cookbook

You're reading from   Qt 6 C++ GUI Programming Cookbook Practical recipes for building cross-platform GUI applications, widgets, and animations with Qt 6

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Product type Paperback
Published in Apr 2024
Publisher Packt
ISBN-13 9781805122630
Length 428 pages
Edition 3rd Edition
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Author (1):
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Lee Zhi Eng Lee Zhi Eng
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Lee Zhi Eng
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Toc

Table of Contents (17) Chapters Close

Preface 1. Chapter 1: Look-and-Feel Customization with Qt Designer FREE CHAPTER 2. Chapter 2: Event Handling – Signals and Slots 3. Chapter 3: States and Animations with Qt and QML 4. Chapter 4: QPainter and 2D Graphics 5. Chapter 5: OpenGL Implementation 6. Chapter 6: Transitioning from Qt 5 to Qt 6 7. Chapter 7: Using Network and Managing Large Documents 8. Chapter 8: Threading Basics –Asynchronous Programming 9. Chapter 9: Building a Touch Screen Application with Qt 6 10. Chapter 10: JSON Parsing Made Easy 11. Chapter 11: Conversion Library 12. Chapter 12: Accessing Databases with SQL Driver and Qt 13. Chapter 13: Developing Web Applications Using Qt WebEngine 14. Chapter 14: Performance Optimization 15. Index 16. Other Books You May Enjoy

Rendering and animation

When it comes to an application that renders graphics and animation, good performance is critical. Users can easily notice performance issues when graphics are not animated smoothly on screen. In the following example, we will look at how we can further optimize a graphics-heavy Qt Quick application.

How to do it…

To learn how to render animation in QML, follow this example:

  1. Create a Qt Quick Application project. Then, right-click on the Resources icon under our project panel and add tux.png to our project’s resources:
Figure 14.12 – Include main.qml and tux.png into your project resources

Figure 14.12 – Include main.qml and tux.png into your project resources

  1. Open up main.qml and change the window size to 650 x 650. We will also add id to the window item and name it window:
    Window {
        id: window
        visible: true
        width: 650
        height: 650
  2. Add the following code inside...
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