Lazarus

Cross-platform native development with Lazarus. Tristan Linnell [email_address]

Lazarus
A full IDE on top of the Free Pascal Compiler.
RAD IDE, similar to Delphi.
”Drag and drop”, event driven design.
Cross-platform: Win, Mac, Linux, FreeBSD, Win CE... ”Write Once, Compile Anywhere”.
Multiple Widget Sets: Win, QT, GTK, Carbon...
Produces standard executables, shared libraries and object files.

Free Pascal Compiler (FPC)
Object Oriented modern Pascal dialect.
Cross-platform.
Written in FPC (itself).
Supports multiple dialects (Object Pascal, FPC, Delphi, Turbo Pascal, Mac Pascal...)
Many built-in functions in the Run Time Library (RTL).

Lazarus

Lazarus Component Library
Or LCL . Similar to Delphi's VCL .
Collection of standard and advanced controls.
Abstracts away the Widgetset's and OS's APIs.
Provides extra functions for cross-platform development, minimising use of {$IFDEF} s

Cross-platform example
Constants, eg DirectorySeparator ('/' or '')
Functions, eg to find the location of the settings directory: GetAppConfigDir():
/home/tristan/.config/project1/
C:Documents and SettingsTristanLocal SettingsApplication Dataproject1
/Users/Tristan/.config/project1

Cross-platform example
GUI Elements, e.g.
Tbutton:
Linux (GTK) Windows Mac OS X (Carbon)

App Architecture

LCL Architecture

A Proper Example! PicPicker
Intuative image resizing application.

Linux (GTK2)

Windows

Mac OS X (Carbon)

More Information
lazarus.freepascal.org and
www.freepascal.org
Wiki
Forums
Tutorials
Documentation
IRC
#lazarus-ide on irc.freenode.net

http://lanyrd.com	25
http://coderwall.com	20
https://lanyrd.com	1

Lazarus

by Tris Linnell

Accessibility

Categories

Upload Details

Usage Rights

3 Embeds 46

Statistics

Lazarus Presentation Transcript