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

Binding a dataset field value to a control  TLinkControlToField

In the previous section, we learned how to unidirectionally bind a data field to a component's property value. The binding that was created to achieve the task was TLinkPropertyToField, while the target component that was used (TText) was a read-only one. But what if we switch to a read-write component in order to let the user change data?

In this section, we are going to use a bidirectional link between the data and target component since we want the component to keep reflecting changes on the dataset side (navigation over records, changes that have been applied to the record's content, and more). However, at the same time, changes may happen on the component side (because of user interaction, for example), and we want them to be applied to the dataset as well.

Here, we will try to use a TEdit component (Edit1) and bind it to the Salary field of the dataset. In the LiveBindings Designer window...