Book Image

Getting Started with Lazarus IDE

By : Roderick Person
1 (1)
Book Image

Getting Started with Lazarus IDE

1 (1)
By: Roderick Person

Overview of this book

A good integrated development environment can be the key to creating and delivering software on time and budget. Having a programming language and a development environment that runs on multiple platforms greatly eases and lessens the time taken on creating cross-platform applications. An IDE that is compatible with a legacy code base allows developers to leverage existing libraries in future applications."Getting Started with Lazarus" is a practical, hands-on guide that provides you with a number of clear step-by-step exercises, which will help you take advantage of the power of the Lazarus IDE and Free Pascal to develop software that can be created for cross-platform use."Getting started with Lazarus" discusses developing software with the open source cross platform integrated development environment and the Free Pascal language. We'll learn how to install Lazarus on various platforms such as Linux and Windows, as well as how to create new projects and convert existing Delphi projects to Lazarus projects by learning the differences between Delphi's Pascal syntax and Free Pascal's Object Pascal using a real world example project. We'll learn how to create custom components for use in Lazarus. We'll also learn the basics of documenting a Lazarus project using the Lazarus Documentation Editor. Finally we will learn that the IDE can be rebuilt using a different widget type, specifically GTK 2. Teach yourself the basics of programming with Lazarus and the open source IDE for the Free Pascal language.
Table of Contents (14 chapters)
Getting Started with the Lazarus IDE
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Hello World console application version


When Lazarus is started, it will either show the last opened project or start with a new GUI application. Select New Project. When the New Project dialog appears, select Console application. Click on the OK button. The New console application dialog is now visible. First, rename the application to THelloConsoleApplication from default TMyApplication in the Application class name textbox. Next, change default Title from My Application to Hello World. Leave all the rest of the settings to default. Now, the New console application dialog should look like the following screenshot (leave the rest of the defaults as they are, and click on the OK button):

The Source Editor window will appear with the auto-generated code for a console application. Let's examine some of the auto-generated code before we go any further.

This first section of the auto-generated code shows the program directive. Here, it is Project1; since the project has not been saved yet, this...