Book Image

Qt5 C++ GUI Programming Cookbook. - Second Edition

By : Lee Zhi Eng
Book Image

Qt5 C++ GUI Programming Cookbook. - Second Edition

By: Lee Zhi Eng

Overview of this book

With the growing need to develop GUIs for multiple targets and multiple screens, improving the visual quality of your application becomes important so that it stands out from your competitors. With its cross-platform ability and the latest UI paradigms, Qt makes it possible to build intuitive, interactive, and user-friendly user interfaces for your applications. Qt5 C++ GUI Programming Cookbook, Second Edition teaches you how to develop functional and appealing user interfaces using the latest version of QT5 and C++. This book will help you learn a variety of topics such as GUI customization and animation, graphics rendering, implementing Google Maps, and more. You will also be taken through advanced concepts like asynchronous programming, event handling using signals and slots, network programming, various aspects of optimizing your application. By the end of the book, you will be confident to design and customize GUI applications that meet your clients' expectations and have an understanding of best practice solutions for common problems.
Table of Contents (15 chapters)

Writing XML data using the QDomDocument class

In this example, we will learn how to write data to an XML file using the QDomDocument class. We will continue from the previous example and just add more code to it.

How to do it...

To learn how to save data into an XML file using the QDomDocument class, let's do the following:

  1. Add the second button to the UI, called Save XML:
  1. Right-click on the Save XML button and select Go to slot…. Then, pick the clicked() option and click OK. A new clicked() slot function will be added to your source files.
  2. Write the following code within the button's clicked() slot function:
void MainWindow::on_saveXmlButton_clicked() {
QString filename = QFileDialog::getSaveFileName...