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Delphi Cookbook

You're reading from   Delphi Cookbook 50 hands-on recipes to master the power of Delphi for cross-platform and mobile development on Windows, Mac OS X, Android, and iOS

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Product type Paperback
Published in Sep 2014
Publisher
ISBN-13 9781783559589
Length 328 pages
Edition 1st Edition
Languages
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Author (1):
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Daniele Teti Daniele Teti
Author Profile Icon Daniele Teti
Daniele Teti
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Toc

Table of Contents (9) Chapters Close

Preface 1. Delphi Basics FREE CHAPTER 2. Become a Delphi Language Ninja 3. Going Cross Platform with FireMonkey 4. The Thousand Faces of Multithreading 5. Putting Delphi on the Server 6. Riding the Mobile Revolution with FireMonkey 7. Using Specific Platform Features Index

RTTI to the rescue – configuring your class at runtime

Since Delphi 2010, the Delphi RTTI has been greatly expanded. Now it is comparable to what is called Reflection in other languages such as C# or Java. A much-improved RTTI can dramatically change the way you write, or even think about, your code and your architecture. Now, it is possible to write highly flexible code without too much effort.

Getting ready

What we want to do in this recipe is dynamically create a class looking for it by name among the classes that have been linked in the executable (or loaded from dynamic packages). The goal is to change the behavior of the program using only an external file without relying on a lot of parameters and complex configuration code; just create the right class. Wonderful!

Let's say you've developed a program to do orders. Your program allows only one-line orders, so you cannot buy different things in the same orders (this is a sample, man!). The form is shown in this screenshot...

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