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Application Development with Qt Creator

You're reading from   Application Development with Qt Creator Build cross-platform applications and GUIs using Qt 5 and C++

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Product type Paperback
Published in Jan 2020
Publisher
ISBN-13 9781789951752
Length 426 pages
Edition 3rd Edition
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Author (1):
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Lee Zhi Eng Lee Zhi Eng
Author Profile Icon Lee Zhi Eng
Lee Zhi Eng
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Table of Contents (19) Chapters Close

Preface 1. Section 1: The Basics
2. Getting Started with Qt Creator FREE CHAPTER 3. Building Applications with Qt Creator 4. Designing Your Application with Qt Designer 5. Qt Foundations 6. Developing Applications with Qt Widgets 7. Section 2: Advanced Features
8. Drawing with Qt 9. Doing More with Qt Quick 10. Implementing Multimedia with Qt Quick 11. Sensors and Qt Quick 12. Section 3: Practical Matters
13. Localizing Your Application with Qt Linguist 14. Optimizing Performance with Qt Creator 15. Developing Mobile Applications with Qt Creator 16. Embedded and IoT Development with Qt Creator 17. Qt Tips and Tricks 18. Other Books You May Enjoy

Doing more with QML Profiler

Let's now learn how we can use QML profiler for something other than just normal GUI applications. In the following example, we will try and create a simple 3D renderer using Qt Quick and make use of QML Profiler to examine its performance.

First, let's create an empty Qt Quick project. Then, open up main.qml and add the following modules to it:

import QtQuick 2.12 as QtQuick2
import QtQuick.Scene3D 2.0
import Qt3D.Core 2.0
import Qt3D.Render 2.0
import Qt3D.Extras 2.0

We added the modules for 3D rendering that are required for later use. We also set an alias for the QtQuick module, which is QtQuick2, as we will be using it later in our code. After that, let's remove the default Window item and add Entity instead. We call this Entity instance sceneRoot, and it will act as the parent item for all objects in the 3D scene. We also add a Camera...

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