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)
1
Section 1: Delphi GUI Programming Frameworks
4
Section 2: The FMX Framework in Depth
13
Section 3: Pushing to The Top: Advanced Topics

Exploring FetchOptions properties

The FetchOptions property has the following sub-properties:

  • Mode and RowsetSize: The Mode property allows you to specify how FireDAC should implement the fetching of records for a result set. If you are doing some batch processing or some data transformation involving the whole dataset, you may want to fetch all records in a single shot, to reduce network time (if any, as FireDAC can work both with local and remote databases), especially when the latency is not minimal.

In a perhaps more common scenario for regular applications, you may want the fetching to be incremental to improve the user experience as the user is not forced to wait for the whole dataset to be loaded before starting to see/work with the data. Different values of the Mode property will let you determine the exact behavior of the fetching strategy, ranging from completely manual handling to automatic or semi-automatic. There are a number of secondary aspects involved in fetching...