Book Image

Hands-On GUI Application Development in Go

By : Andrew Williams
Book Image

Hands-On GUI Application Development in Go

By: Andrew Williams

Overview of this book

Go is often compared to C++ when it comes to low-level programming and implementations that require faster processing, such as Graphical User Interfaces (GUIs). In fact, many claim that Go is superior to C++ in terms of its concurrency and ease of use. Most graphical application toolkits, though, are still written using C or C++, and so they don't enjoy the benefits of using a modern programming language such as Go. This guide to programming GUIs with Go 1.11 explores the various toolkits available, including UI, Walk, Shiny, and Fyne. The book compares the vision behind each project to help you pick the right approach for your project. Each framework is described in detail, outlining how you can build performant applications that users will love. To aid you further in creating applications using these emerging technologies, you'll be able to easily refer to code samples and screenshots featured in the book. In addition to toolkit-specific discussions, you'll cover more complex topics, such as how to structure growing graphical applications, and how cross-platform applications can integrate with each desktop operating system to create a seamless user experience. By delving into techniques and best practices for organizing and scaling Go-based graphical applications, you'll also glimpse Go's impressive concurrency system. In the concluding chapters, you'll discover how to distribute to the main desktop marketplaces and distribution channels. By the end of this book, you'll be a confident GUI developer who can use the Go language to boost the performance of your applications.
Table of Contents (25 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Comparison of GUI Toolkits
Index

Download Gmail credentials


In Chapter 12Concurrency, Networking, and Cloud Services, we wrote the OAuth2 handlers and Gmail integration using only the standard library. For this final code exploration, we'll use the helpful library that Google has created for interacting with Gmail servers. To use this library, we need the client credentials in a different format (credentials.json). To access this, log in to your Google account and go to the Go quickstart page at https://developers.google.com/gmail/api/quickstart/go. Once here, you'll need to click on ENABLE THE GMAIL API and then DOWNLOAD CLIENT CONFIGURATION. This will download the credentials.json file that we'll need to initialize the library in the next section, Creating server provider.

Once you've downloaded the credentials file, you'll need to install the two required libraries using go get -u google.golang.org/api/gmail/v1 and go get -u golang.org/x/oauth2/google. You're then ready to add the code to connect to Gmail and access your emails.