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

Customizing TTreeview's items

Similar to what we have seen with the TListBox component (previously in this chapter), we can easily customize TTreeView items by dropping other components inside them. Adding an extra button to a specific item merely requires selecting the items and double-clicking on the TButton entry in the Component Palette of the IDE.

A second way to customize your items (exactly as described for TListBox items) is to inherit your own class from TTreeViewItem and provide extra functionalities or onboard components directly via code.

The following code snippets show how to implement a simple tree view item that is able to hold some extra data (specifically, a TPerson record data structure):

TPerson = record
Name: string;
Surname: string;
DateOfBirth: TDate;
function Age: Integer;
function ToString: string;

class function Andrea: TPerson; static;

{ TPerson }

function TPerson.Age: Integer...