Book Image

Mastering Qt 5 - Second Edition

By : Guillaume Lazar, Robin Penea
Book Image

Mastering Qt 5 - Second Edition

By: Guillaume Lazar, Robin Penea

Overview of this book

Qt 5.11 is an app development framework that provides a great user experience and develops full capability applications with Qt Widgets, QML, and even Qt 3D. Whether you're building GUI prototypes or fully-fledged cross-platform GUI applications with a native look and feel, Mastering Qt 5 is your fastest, easiest, and most powerful solution. This book addresses various challenges and teaches you to successfully develop cross-platform applications using the Qt framework, with the help of well-organized projects. Working through this book, you will gain a better understanding of the Qt framework, as well as the tools required to resolve serious issues, such as linking, debugging, and multithreading. You'll start off your journey by discovering the new Qt 5.11 features, soon followed by exploring different platforms and learning to tame them. In addition to this, you'll interact with a gamepad using Qt Gamepad. Each chapter is a logical step for you to complete in order to master Qt. By the end of this book, you'll have created an application that has been tested and is ready to be shipped.
Table of Contents (16 chapters)

Using your Qt Designer plugin

Our custom plugin is now finished. Because we added a custom Build command to automatically deploy the filter-widget library, it should be visible in Qt Designer. The deploy path we specified is inside the Qt Creator directory. Qt Creator integrates Qt Designer via a plugin that displays the UI inside Qt Creator.

When Qt Creator starts, it will try to load every library available in its specific paths. This means that you have to restart Qt Creator each time you modify the plugin (if you want to see the result of your modifications in the designer).

To see the plugin in action, we now have to create the application project of the chapter. Create a Qt Widgets Application subproject in the ch07-image-filter project named image-filter. In the wizard, let it generate the form, called MainWindow.ui.

To properly use the plugin, just link the filter-plugin...