Book Image

Delphi Programming Projects

By : William Duarte
Book Image

Delphi Programming Projects

By: William Duarte

Overview of this book

Delphi is a cross-platform programming language and software development kit that supports rapid application development for Microsoft Windows, Apple Mac OS X, Android, and iOS. With the help of seven practical projects, this book will guide you through the best practices, Delphi Run-Time Library (RTL) resources, and design patterns. Whether you use the Visual Component Library (VCL) or FireMonkey (FMX) framework, these design patterns will be implemented in the same way in Delphi, using Object Pascal. In the first few chapters, you will explore advanced features that will help you build rich applications using the same code base for both mobile and desktop projects. In addition to this, you’ll learn how to implement microservice architecture in Delphi. As you get familiar with the various aspects of Delphi, you will no longer need to maintain source code for similar projects, program business rules on screens, or fill your forms with data access components. By the end of this book, you will have gained an understanding of the principles of clean code and become proficient in building robust and scalable applications in Delphi.
Table of Contents (9 chapters)

Summary

In this chapter, we initially learned about the concept of a service and how each platform can support a service. We split the chapter into three parts: Windows, Android, and iOS—one part for each platform.

When working with Windows services, we learned that a service is an application that runs without user interference and has no graphical interface. So, we built a service where, every 10 seconds, we recorded the current date and time into a text file.

Additionally, we learned that the OnExecute event forms the backbone of a service with its looping or main thread. However, when we receive many requests or require a multithread service instead, we opt to manually handle the execution and stop the events using safe threads.

Next, we gained an understanding about Android services. This also performs tasks in the background, but it is at least necessary to have a...