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

Basic event handling

As we have talked about buttons on list view items, you may now ask how event handling should be dealt with, for example, to react to the user clicking or tapping on an item's text button.

Generally speaking, you are always clicking on the item, even if you are aiming to click on a specific part (a specific drawable) of it. The TListView class provides you with some convenient events you can handle in order to implement the desired behavior:

  • OnClick / OnDblClick: These are very standard events to capture the click/double-click on the whole TListView component. No specific information is provided within the event handler, so you can only rely on properties such as TListView.Selectedbut beware of timing (at the point when you are clicking on an item, the Selected property will still refer to the previously selected one).
  • OnItemClick: The event handler for this event will be supplied with a reference...