Book Image

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

By : Nibedit Dey
Book Image

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

By: Nibedit Dey

Overview of this book

Qt is a cross-platform application development framework widely used for developing applications that can run on a wide range of hardware platforms with little to no change in the underlying codebase. If you have basic knowledge of C++ and want to build desktop or mobile applications with a modern graphical user interface (GUI), Qt is the right choice for you. Cross-Platform Development with Qt 6 and Modern C++ helps you understand why Qt is one of the favorite GUI frameworks adopted by industries worldwide, covering the essentials of programming GUI apps across a multitude of platforms using the standard C++17 and Qt 6 features. Starting with the fundamentals of the Qt framework, including the features offered by Qt Creator, this practical guide will show you how to create classic user interfaces using Qt Widgets and touch-friendly user interfaces using Qt Quick. As you advance, you'll explore the Qt Creator IDE for developing applications for multiple desktops as well as for embedded and mobile platforms. You will also learn advanced concepts about signals and slots. Finally, the book takes you through debugging and testing your app with Qt Creator IDE. By the end of this book, you'll be able to build cross-platform applications with a modern GUI along with the speed and power of native apps.
Table of Contents (17 chapters)
Section 1: The Basics
Section 2: Cross-Platform Development
Section 3: Advanced Programming, Debugging, and Deployment

Debugging strategies

There are different debugging strategies to find the root cause of an issue. Before attempting to locate a bug in the application, it is critical to thoroughly understand the program or library. You can't find mistakes if you don't know what you're doing. Only if you have a thorough understanding of the system and how it operates will you be able to identify bugs in the application. Previous experience can aid in the detection of similar types of bugs as well as the resolution of bugs. The individual expert's knowledge determines how easily the developer can locate the bug. You can add debug print statements and breakpoints to analyze the flow of the program. You can do forward analysis or backward analysis to track the bug's location.

When debugging, the following steps are used to find the root cause and resolve it:

  1. Identify the issue.
  2. Locate the issue.
  3. Analyze the issue.
  4. Resolve the issue.
  5. Fix the side effects...