Book Image

Delphi GUI Programming with FireMonkey

By : Andrea Magni
4 (1)
Book Image

Delphi GUI Programming with FireMonkey

4 (1)
By: Andrea Magni

Overview of this book

FireMonkey (FMX) is a cross-platform application framework that allows developers to create exciting user interfaces and deliver applications on multiple operating systems (OS). This book will help you learn visual programming with Delphi and FMX. Starting with an overview of the FMX framework, including a general discussion of the underlying philosophy and approach, you’ll then move on to the fundamentals and architectural details of FMX. You’ll also cover a significant comparison between Delphi and the Visual Component Library (VCL). Next, you’ll focus on the main FMX components, data access/data binding, and style concepts, in addition to understanding how to deliver visually responsive UIs. To address modern application development, the book takes you through topics such as animations and effects, and provides you with a general introduction to parallel programming, specifically targeting UI-related aspects, including application responsiveness. Later, you’ll explore the most important cross-platform services in the FMX framework, which are essential for delivering your application on multiple platforms while retaining the single codebase approach. Finally, you’ll learn about FMX’s built-in 3D functionalities. By the end of this book, you’ll be familiar with the FMX framework and be able to build effective cross-platform apps.
Table of Contents (18 chapters)
Section 1: Delphi GUI Programming Frameworks
Section 2: The FMX Framework in Depth
Section 3: Pushing to The Top: Advanced Topics

Working with macros and parameters

While dealing with SQL statements, the complexity of these statements tends to grow. Aside from academic examples, the average SQL statement consists of a quite large fields list, some joins, filter criteria listed in the where clause, sorting, and possibly grouping.

For decades, in every programming forum I've been in, I have seen people manually concatenating SQL statements as strings in order to provide values for filter criteria or similar tasks. This is bad for a number of reasons, starting from some evident opening up to SQL injection vulnerabilities, down to possible performance penalties. However, basically, often there is the need to dynamically build (parts of) SQL statements, and FireDAC comes to the rescue with two handy functionalities: parameters and macros.

Parameters are quite a common feature among modern DBMSes and FireDAC correctly provides an interface to access them and populate them with values (as other DAC libraries do);...