PureBasic#Hello World example

{{Infobox programming language

| name = PureBasic

| logo =

| screenshot = PureBasic VD.png

| caption = The PureBasic Visual Designer, showing a selection of popular GUI components that it supports.

| paradigm = Structured, imperative, procedural

| family = BASIC

| designer = Fantaisie Software

| developer = Fantaisie Software

| latest release version = 6.20

| latest release date = {{Start date and age|2025|02|12}}

| typing =

| year = {{Start date|1998}}

| influenced =

| license = Trialware

| website = {{URL|www.purebasic.com}}

| influenced_by =

| operating_system = Windows, Linux, macOS, Raspberry Pi OS, AmigaOS | file_ext = .pb, .pbi, .pbf, .pbp

}}

File:PureBasic IDE 5.10.png

PureBasic is a commercially distributed procedural computer programming language and integrated development environment based on BASIC and developed by Fantaisie Software for Windows, Linux, macOS and Raspberry Pi. An Amiga version is available, although it has been discontinued and some parts of it are released as open-source. The first public release of PureBasic for Windows was on 17 December 2000. It has been continually updated ever since.

PureBasic has a "lifetime license model". As cited on the website, the first PureBasic user (who registered in 1998) still has free access to new updates and this is not going to change.[http://www.purebasic.com/faq.php FAQ] lifetime licence details

PureBasic compiles directly to IA-32, x86-64, PowerPC or 680x0 instruction sets, generating small standalone executables and DLLs which need no runtime libraries beyond the standard system libraries. Programs developed without using the platform-specific application programming interfaces (APIs) can be built easily from the same source file with little or no modification.

PureBasic supports inline assembly, allowing the developer to include FASM assembler commands within PureBasic source code, while using the variables declared in PureBasic source code, enabling experienced programmers to improve the speed of speed-critical sections of code. PureBasic supports and has integrated the OGRE 3D Environment. Other 3D environments such as the Irrlicht Engine are unofficially supported.

Since version 6.00 (June 2022), in addition to compilation using ASM, PureBasic offers compilation with a C backend. This enables access to new platforms (e.g. Raspberry) and should make it easier to add new libraries in the future.

Programming language

= Characteristics =

PureBasic is a native cross platform 32 bit and 64 bit BASIC compiler. Currently supported systems are Windows, Linux, macOS. The AmigaOS version is legacy and open-source. The compiler produces native executables and the syntax of PureBasic is simple and straightforward, comparable to plain C without the brackets and with native unicode string handling and a large library of built-in support functions.[http://www.purebasic.com/index.php PureBasic home page] It can compile console applications,[http://www.purebasic.com/documentation/console/index.html PureBasic - Console] GUI applications,[http://www.purebasic.com/documentation/gadget/index.html PureBasic - Gadget] and DLL files.[http://www.purebasic.com/documentation/reference/dll.html Building a DLL]

= Hello World example =

The following single line of PureBasic code will create a standalone x86 executable (4.5 KiB (4,608 bytes) on Windows version) that displays a message box with the text "Hello World".

MessageRequester("Message Box", "Hello World")

And the following variant of the same code, which instead uses an inline Windows API call with no need for declarations or other external references, will create an even smaller 2.0 KiB (2,048 bytes) standalone x86 executable for Windows.

MessageBox_(0, "Hello World", "Message Box", 0)

The following is a console version of the Hello World example.

OpenConsole() ; Open a console window.

Print("Hello, World!")

Delay(5000) ; Pause for 5 seconds

= Procedural programming =

PureBasic is a "Second generation BASIC" language, with structured conditionals and loops, and procedure-oriented programming supported. The user is not required to use procedures, so a programmer may opt for a coding style which includes {{mono|Goto, Gosub Label}}, and {{mono|Return}}.

Below is a sample procedure for sorting an array, although SortArray is now a built-in function of PureBasic.

Procedure bubbleSort(Array a(1))

Protected i, itemCount, hasChanged

itemCount = ArraySize(a())

Repeat

hasChanged = #False

itemCount - 1

For i = 0 To itemCount

If a(i) > a(i + 1)

Swap a(i), a(i + 1)

hasChanged = #True

EndIf

Until hasChanged = #False

EndProcedure

Below is a sample program that displays a sizeable text editor with two menu items.

;Create Window:

OpenWindow(0, #PB_Ignore, #PB_Ignore, 800, 600, "Simple Text Editor", #PB_Window_SystemMenu | #PB_Window_MinimizeGadget | #PB_Window_MaximizeGadget | #PB_Window_SizeGadget)

;Add 2 menus:

CreateMenu(0, WindowID(0))

MenuItem(1, "&OK")

MenuItem(2, "&Cancel")

;Add Editor:

EditorGadget(0, 0, 0, 0, 0)

SetGadgetFont(0, LoadFont(0, "Courier New", 10))

;Process window messages until closed:

Repeat

Select WaitWindowEvent()

Case #PB_Event_Menu

Select EventMenu()

Case 1: MessageRequester("OK clicked directly or with '&' mnemonic.", GetGadgetText(0))

Case 2: Break

EndSelect

Case #PB_Event_SizeWindow: ResizeGadget(0, 0, 0, WindowWidth(0, #PB_Window_InnerCoordinate), WindowHeight(0, #PB_Window_InnerCoordinate))

Case #PB_Event_CloseWindow: Break

EndSelect

ForEver

PureBasic does not escape double quotes in strings so these must be concatenated with {{mono|Chr(34)}}.

= Object-oriented programming =

Fred, the developer of PureBasic, has stated that PureBasic will never be object oriented.[http://www.purebasic.fr/english/viewtopic.php?p=403070#p403070 PureBasic won't be object oriented] However, numerous users have created object oriented support systems.[http://www.purebasic.fr/english/viewtopic.php?t=30236 PureObject: PureBasic OOP support][http://www.purebasic.fr/english/viewtopic.php?t=36255 OOP tutorial][http://www.purebasic.fr/english/viewtopic.php?t=30774 Another OOP PreCompiler]

= Data types =

Variable data type specified when you first use it (and optionally - in the future), and is separated from the name of the point. There is a set of basic types - {{mono|.f, .d}} (float and double numbers), {{mono|.b, .c, .w, .l, .q}} (integers - from single-byte and 8-byte), {{mono|.s}} - strings.

Type	Suffix	Memory usage	Numerical range
class="wikitable"
Byte	{{mono\|b}}	1 byte (8 bits)	−128 ... +127
Ascii	{{mono\|a}}	1 byte (8 bits)	0 ... +255
Character	{{mono\|c}}	1 byte (8 bits) (ascii)	0 ... +255
Word	{{mono\|w}}	2 bytes (16 bits)	−32768 ... +32767
Unicode	{{mono\|u}}	2 bytes (16 bits)	0 ... +65535
Character	{{mono\|c}}	2 bytes (16 bits) (unicode)	0 ... +65535
Long	{{mono\|l}}	4 bytes (32 bits)	−2147483648 ... +2147483647
Integer	{{mono\|i}}	4 bytes (32 bits) x86	−2147483648 ... +2147483647
Float	{{mono\|f}}	4 bytes (32 bits)	Depending on the ratio of the decimal number.
Integer	{{mono\|i}}	8 bytes (64 bits) x64	−9223372036854775808 ... +9223372036854775807
Quad	{{mono\|q}}	8 bytes (64 bits)	−9223372036854775808 ... +9223372036854775807
Double	{{mono\|d}}	8 bytes (64 bits)	Depending on the ratio of the decimal number.
String	{{mono\|s}}	(String length + 1) * SizeOf(Character)	No limit.
Fixed String	{{mono\|s{length}}}	(String length) * SizeOf(Character)	No limit.

{{mono|Len(String)}} used to count the length of a string will not exceed the first null character ({{mono|Chr(0)}}).

In addition to basic types, the user can define the type of construction via

Structure type_name

field_name.type ; Single field. Perhaps the structures attachment.

field_name[count].type ; Static arrays.

; ...

; Optional construction StructureUnion .. EndStructureUnion allows you

; to combine multiple fields into one area of memory

; that is sometimes required for the conversion types.

StructureUnion

type_name.type

; ...

EndStructureUnion

EndStructure

Variables can be single (actually, standard variables), dynamic array (declared using the {{code|lang=blitzbasic|Dim var_name.type_name (size1, size2, ... )}}, a linked list ({{code|lang=blitzbasic|List() var_name.type_name}}), an associative array (in new versions of language) ({{code|Map var_name.type_name()}})

Form Designer RAD

PureBasic has its own form designer to aid in the creation of forms for applications, but other third-party solutions are also available.[http://purevision.reelmedia.org/ PureVision], Professional form design for PureBASIC.[http://www.progui.co.uk/ ProGUI], DLL library comprising more than 100 well documented commands to quickly incorporate rich, customizable GUI components into your applications. The original non-integrated Visual Designer was replaced with a new integrated Form Designer on 14 Feb 2013.[http://www.purebasic.fr/english/viewtopic.php?f=14&t=53464 PureBasic 5.10 is released]

User community

PureBasic provides an online forum for users to ask questions and share knowledge. On 17 february 2025 the English language forum had 6,484 members and contained 70,174 threads comprising 578,646 posts since 17 May 2002.[http://www.purebasic.fr/english English forum], Official forum.

Numerous code sharing sites show PureBasic is used to create tools[http://www.horstmuc.de/win.htm Horst Schaeffer's Software Pages] and games in a fast and easy way,[http://www.purearea.net/ PureArea] and share large amounts of open-source code.[http://www.purearea.net/pb/CodeArchiv/English.html Andre Beer's code archive.]

References

= General references=

{{cite book|last=Hale Ligh|first=Michael |title=Malware Analysts Cookbook Tools for Thwarting Malicious Attacks.|year=2010|publisher=John Wiley & Sons Inc|location=Indianapolis, IN|isbn=978-0-470-61303-0|pages=241}}
{{cite book|last=Galbreath|first=Nick|title=Cryptography for Internet and database applications : developing secret and public key techniques with Java|year=2002|publisher=Wiley|location=Indianapolis, Ind.|isbn=978-0-471-21029-0|pages=[https://archive.org/details/cryptographyfori00galb/page/300 300]|url-access=registration|url=https://archive.org/details/cryptographyfori00galb/page/300}}
{{cite news|title=Learning to Crack Code|url=https://i.imgur.com/0jZ8noC.jpg/|newspaper=Manly Daily|date=25 June 2004}}
{{cite journal|last=Georges|first=Philippe|title=La programmation avec PureBasic|journal=PROgrammez|issue=141|url=http://www.programmez.com/magazine_articles.php?titre=La-programmation-avec-PureBasic&id_article=1538&magazine=141}}
{{cite book|last=Svoboda|first=Luboš|title=Překvapivý PureBasic (Surprising PureBasic: A Czech ebook for prospective users of PureBasic)|year=2012|pages=89|url=http://people.fsv.cvut.cz/~svobodal/pure/index.htm}}

External links

{{official website|http://www.purebasic.com}}
[https://www.purebasic.fr/english/ Official Purebasic Forums (English)]
[https://www.purebasic.fr/blog/ PureBasic Team Blog] - Official Blog "Random thoughts on PureBasic development"

;Articles

[http://www.codeproject.com/Articles/853831/PureBasic-The-Perfect-Cross-Platform-Native-Develo PureBasic - The Perfect Cross-Platform & Native Development Language] (2015)

;Libraries and Open Source Code Archives