Book Image

Delphi Cookbook - Third Edition

By : Daniele Spinetti, Daniele Teti
Book Image

Delphi Cookbook - Third Edition

By: Daniele Spinetti, Daniele Teti

Overview of this book

Delphi is a cross-platform integrated development environment (IDE) that supports rapid application development on different platforms, saving you the pain of wandering amid GUI widget details or having to tackle inter-platform incompatibilities. Delphi Cookbook begins with the basics of Delphi and gets you acquainted with JSON format strings, XSLT transformations, Unicode encodings, and various types of streams. You’ll then move on to more advanced topics such as developing higher-order functions and using enumerators and run-time type information (RTTI). As you make your way through the chapters, you’ll understand Delphi RTL functions, use FireMonkey in a VCL application, and cover topics such as multithreading, using aparallel programming library and deploying Delphi on a server. You’ll take a look at the new feature of WebBroker Apache modules, join the mobile revolution with FireMonkey, and learn to build data-driven mobile user interfaces using the FireDAC database access framework. This book will also show you how to integrate your apps with Internet of Things (IoT). By the end of the book, you will have become proficient in Delphi by exploring its different aspects such as building cross-platforms and mobile applications, designing server-side programs, and integrating these programs with IoT.

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Table of Contents (12 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Sections
Get in touch
Free Chapter
1
Delphi Basics
Delphi Basics
Introduction
Changing your application's look and feel with VCL styles
Changing the style of your VCL application at runtime
Customizing TDBGrid
Using owner-draw combos and listboxes
Making an owner-draw control aware of the VCL styles
Creating a stack of embedded forms
Manipulating JSON
Manipulating and transforming XML documents
I/O in the 21st century – knowing the streams
Creating a Windows Service
Associating a file extension with your application on Windows
Be coherent with the Windows look and feel using TTaskDialog
The amazing TFDTable – indices, aggregations, views, and SQL
ETL made easy – TFDBatchMode
Data integration made easy – TFDLocalSQL
2
Becoming a Delphi Language Ninja
Becoming a Delphi Language Ninja
Introduction
Fun with anonymous methods – using higher-order functions
Writing enumerable types
Using enumerable types to create new language features
RTTI to the rescue – configuring your class at runtime
Duck typing using RTTI
BOs validation using RTTI attributes
Creating helpers for your classes
3
Knowing Your Friends – The Delphi RTL
Knowing Your Friends – The Delphi RTL
Introduction
Checking strings with regular expressions
Consuming RESTful services using native HTTP(S) client libraries
Coping with the encoded internet world using System.NetEncodings
Saving space using System.Zip
Decoupling your code using a cross-platform publish/subscribe mechanism
4
Going Cross-Platform with FireMonkey
Going Cross-Platform with FireMonkey
Introduction
Giving a new appearance to the standard FireMonkey controls using styles
Creating a styled TListBox
Impressing your clients with animations
Using master/details with LiveBindings
Showing complex vector shapes using paths
Using FireMonkey in a VCL application
Reinventing your GUI, also known as mastering Firemonkey controls, shapes, and effects
5
The Thousand Faces of Multithreading
The Thousand Faces of Multithreading
Introduction
Synchronizing shared resources with TMonitor
Talking with the main thread using a thread-safe queue
Synchronizing multiple threads using TEvent
Communication made easy with Delphi Event Bus
Displaying a measure on a 2D graph like an oscilloscope
Using the Parallel Programming Library in the real world: Tasks
Using the Parallel Programming Library in the real world: Futures
Using the Parallel Programming Library in the real world: Parallel For/Join
6
Putting Delphi on the Server
Putting Delphi on the Server
Introduction
Developing web client JavaScript applications with WebBroker on the server
Converting a console application into a Windows service
Serializing a dataset to JSON and back
Serializing objects to JSON and back using RTTI
Sending a POST HTTP request for encoding parameters
Implementing a RESTful interface using WebBroker
Controlling the remote application using UDP
Using app tethering to create a companion app
Creating DataSnap Apache modules
Creating WebBroker Apache modules
Using native HTTP(S) client libraries
Logging like a pro using LoggerPro
7
Linux Development
Linux Development
Introduction
Creating Linux TCP/IP servers
How to correctly handle Linux signals
How to build a modern Linux daemon
Building a TCP/IP Linux server and daemonizing it
Building a RESTFul server for Linux
Building a complete RESTful server with database access and web client interface
Creating WebBroker Apache modules for Linux
8
Riding the Mobile Revolution with FireMonkey
Riding the Mobile Revolution with FireMonkey
Introduction
Taking a photo, applying effects, and sharing it
Using TListView to show and search local data
Using SQLite databases to handle a to-do list
Do not block the main thread!
Using a styled TListView to handle a long list of data
Customizing the TListView
Taking a photo and location and sending it to a server continuously
Talking with the backend
Making a phone call from your app
Tracking the application's life cycle
Building your own SMS sending service with the REST API
9
Using specific platform features
Using specific platform features
Introduction
Using Android SDK Java classes
Using iOS Objective-C SDK classes
Displaying PDF files in your app
Sending Android Intents
Letting your phone talk – using the Android TextToSpeech engine
Using Java classes in Android apps with Java2OP
Doing it in the background, the right way – Android services
10
Delphi and IoT
Delphi and IoT
Introduction
How to blink an LED using Arduino
How to drive multiple relays with Arduino and Delphi
Reading data from Arduino
How to blink an LED using Raspberry Pi
How to drive multiple relays with Raspberry Pi and Delphi
Reading data from Raspberry PI
11
Other Books You May Enjoy
Other Books You May Enjoy
Leave a review - let other readers know what you think

Introduction

In this chapter, we'll look at how to develop Linux applications using Delphi. Delphi, from Version 10.2 Tokyo, officially allows you to develop applications for the Linux platform. Using your own Delphi instance from a Windows machine, you can create a 64-bit Linux application and deploy it to the Linux machine. However, initial support does not allow you to create visual applications. To be clear, it is not possible to create VCL or FireMonkey applications—officially, there is no support, but there are frameworks that allow you to do so. Here is a list of the types of applications that are available for the Linux platform:

  • Console application
  • EMS package (RAD Server)
  • DataSnap
  • DataSnap WebBroker
  • WebBroker
  • Dynamic-link libraries
  • DUnitX project

Looking at the types of apps available, the recipes in this chapter are focused on console applications and...

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