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<title>Object Windows Library</title>

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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Object Windows Library</span></span>

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</style><table class="infobox vevent"><tbody><tr><th colspan="2" class="infobox-above summary">Object Windows Library</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Programmer" title="Programmer">Original author(s)</a></th><td class="infobox-data"><a href="Borland" title="Borland">Borland</a> Software Corporation</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Initial release</th><td class="infobox-data">1991<span style="display:none"> (<span class="bday dtstart published updated">1991</span>)</span></td></tr><tr style="display: none;"><td colspan="2" class="infobox-full-data"></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Software_release_life_cycle" title="Software release life cycle">Stable release</a></th><td class="infobox-data"><div style="margin:0px;">OWLNext 7.0.19

/ April 18, 2025<span style="display:none"> (<span class="bday dtstart published updated">2025-04-18</span>)</span></div></td></tr><tr style="display:none"><td colspan="2">

</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Repository_(version_control)" title="Repository (version control)">Repository</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">

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</style><div class="plainlist"><ul><li><span class="url"><a rel="nofollow" class="external text" href="https://svn.code.sf.net/p/owlnext/code/trunk">svn<wbr>.code<wbr>.sf<wbr>.net<wbr>/p<wbr>/owlnext<wbr>/code<wbr>/trunk</a></span> </li></ul>

</div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Written in</th><td class="infobox-data"><a href="C%2B%2B" title="C++">C++</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Operating_system" title="Operating system">Operating system</a></th><td class="infobox-data"><a href="Windows" class="mw-redirect" title="Windows">Windows</a>, <a href="OS/2" title="OS/2">OS/2</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Software_categories#Categorization_approaches" title="Software categories">Type</a></th><td class="infobox-data"><a href="Software_framework" title="Software framework">Software framework</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="Proprietary_software" title="Proprietary software">Proprietary</a> with <a href="Open-source_software" title="Open-source software">open-source</a> patches</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://sourceforge.net/p/owlnext/wiki/">sourceforge<wbr>.net<wbr>/p<wbr>/owlnext<wbr>/wiki<wbr>/</a></span> </td></tr></tbody></table>

<p>The <b>Object Windows Library</b> (OWL) is a <a href="C%2B%2B" title="C++">C++</a> object-oriented <a href="Application_framework" title="Application framework">application framework</a> designed to simplify desktop application development for <a href="Windows" class="mw-redirect" title="Windows">Windows</a> and (some releases) <a href="OS/2" title="OS/2">OS/2</a>.

</p><p>OWL was introduced by <a href="Borland" title="Borland">Borland</a> in 1991 and eventually deprecated in 1997 in favor of their <a href="Visual_Component_Library" title="Visual Component Library">Visual Component Library</a> (VCL). Its primary competitor was the <a href="Microsoft_Foundation_Class_Library" title="Microsoft Foundation Class Library">Microsoft Foundation Class Library</a> (MFC). OWLNext,<sup id="cite_ref-OWLNext_1-0" class="reference"><a href="#cite_note-OWLNext-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> an <a href="Open-source_software" title="Open-source software">open-source</a> project driven by the OWL user community, has continued the maintenance of OWL, ensuring that the library and applications that use it work with the latest version of Windows and modern C++ compilers.

</p>

<div class="mw-heading mw-heading2"><h2 id="History">History</h2></div>

<p>In the early 1990s, <a href="Borland" title="Borland">Borland</a> dominated the C++ market. In 1991, Borland introduced <a href="Borland_C%2B%2B" title="Borland C++">Borland C++</a> 3.0 which included OWL 1.0. At that time, C++ was just beginning to replace <a href="C_(programming_language)" title="C (programming language)">C</a> for development of commercial software, driven by the rising of the Windows platform and the rapid adoption of <a href="Object-oriented_design" class="mw-redirect" title="Object-oriented design">object-oriented design</a>. During this period, OWL was a popular choice for Windows application development.

</p><p>In 1992, Microsoft introduced <a href="Microsoft_Foundation_Classes" class="mw-redirect" title="Microsoft Foundation Classes">MFC</a> as part of Microsoft C++ 7.0. As a similar C++ application framework for Windows, MFC immediately became OWL's primary competitor in the C++ application development market.

</p><p>OWL 1.0 depended on <i>Dynamic Dispatch Virtual Tables</i> (DDVT), a proprietary extension to C++ that allowed the programmer to bind Windows messages (events) to functions (event handlers) in a simple manner and with little run-time overhead. MFC, on the other hand, used a solution that did not require a language extension.

</p><p>In 1993, Borland launched Borland C++ 4.0 which included OWL 2.0. In this version of OWL, the proprietary DDVT extension was replaced by <i>response tables</i>, a <a href="Macro_(computer_science)" title="Macro (computer science)">macro</a>-based solution compatible with standard C++ and similar to MFC in use. A conversion tool (OWLCVT) was included to migrate code from OWL 1.0 to OWL 2.0.

</p><p>In April 1993, Borland and <a href="Novell" title="Novell">Novell</a> signed an agreement to port OWL to Novell <a href="AppWare" title="AppWare">AppWare</a> Foundation. AppWare Foundation was an API designed by Novell to be <a href="Cross-platform" class="mw-redirect" title="Cross-platform">cross-platform</a>, allowing the deployment of applications on Mac, Windows and Unix clients and with several network services. The main tools for developing in AppWare were OWL and AppBuilder.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> However, in late 1994, Novell CEO <a href="Raymond_Noorda" class="mw-redirect" title="Raymond Noorda">Raymond Noorda</a> resigned. Novell expansion plans were reconsidered, AppWare development was stopped and so was OWL for AppWare. In 1995 a group of original team members bought AppBuilder. In the same year, Software UNO offered a commercial port for OWL 2.0 to several platforms: AIX 3.2.5, <a href="Tru64_UNIX" title="Tru64 UNIX">DEC OSF/1</a> AXP, <a href="HP-UX" title="HP-UX">HP-UX</a> 9.03, Linux 1.2, Solaris 2.x, <a href="SunOS" title="SunOS">Sun OS</a> 4.1.x, and SVR4 for x86. It was called WM_MOTIF.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>

</p><p>In 1995, Borland C++ 4.5 with OWL 2.5 was released. As it was released before <a href="Windows_95" title="Windows 95">Windows 95</a>, Borland promised a free upgrade for any incompatibility present in the final Windows version. In August 1995, Microsoft launched Windows 95 and <a href="Visual_Studio" title="Visual Studio">Visual Studio</a> 4.0. By then, Visual Studio had already eclipsed Borland C++ in shipments, and it was clear that OWL was losing ground to MFC.

</p><p>In 1996, Borland released Borland C++ 5 for Windows. This version included OWL 5, a major revamp of the library. While OWL 5 received a minor update with the release of Borland C++ 5.02 a little later, version 5 would end up as the final version of OWL by Borland.

</p><p>In 1997, Borland released <a href="C%2B%2BBuilder" title="C++Builder">C++Builder</a> and deprecated Borland C++. OWL was included on the <i>Companion CD</i> that shipped with C++Builder, but Borland ended maintenance and further development of the library.

</p><p>In late 1999, Borland stopped selling Borland C++ and OWL.

</p>

<div class="mw-heading mw-heading2"><h2 id="OWLNext">OWLNext</h2></div>

<p>Shortly after Borland ended the development of OWL, maintenance was taken over by a group of users led by Yura Bidus. This effort evolved into the OWLNext<sup id="cite_ref-OWLNext_1-1" class="reference"><a href="#cite_note-OWLNext-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> <a href="Open-source_software" title="Open-source software">open-source</a> project currently hosted at the <a href="SourceForge" title="SourceForge">SourceForge</a> site. OWLNext is a modern update and extension of OWL with support for the latest Windows versions and modern C++ compilers from Microsoft and <a href="Embarcadero_Technologies" title="Embarcadero Technologies">Embarcadero Technologies</a>.

</p>

<div class="mw-heading mw-heading2"><h2 id="Shipped_releases">Shipped releases</h2></div>

<th>Product version

</th>

<th>OWL version

</th></tr>

<tr>

<td>Borland C/C++ 3.0

</td>

<td>OWL 1.0

</td></tr>

<tr>

<td>Borland C/C++ 2.0 for OS/2

</td>

<td>OWL 2.0

</td></tr>

<tr>

<td>Borland C++ 4.0x

</td>

<td>OWL 2.0

</td></tr>

<tr>

<td>Borland C++ 4.5x

</td>

<td>OWL 2.5

</td></tr>

<tr>

<td>Borland C++ 5.0x

</td>

<td>OWL 5.0

</td></tr>

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<td>Borland C++Builder 4.0

</td>

<td>OWL 5.0

</td></tr>

<tr>

<td>Borland C++Builder 5.0

</td>

<td>OWL 5.0

</td></tr>

<tr>

<td>CodeGear C++Builder 2007

</td>

<td>OWLNext 6.20

</td></tr>

<tr>

<td>Embarcadero C++Builder XE

</td>

<td>OWLNext 6.30

</td></tr>

<tr>

<td>Embarcadero C++Builder XE2

</td>

<td>OWLNext 6.32

</td></tr>

</tbody></table>

<p>Later versions of OWLNext have been released through SourceForge.

</p>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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<li id="cite_note-OWLNext-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-OWLNext_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-OWLNext_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">OWLNext <a rel="nofollow" class="external free" href="https://sourceforge.net/p/owlnext">https://sourceforge.net/p/owlnext</a></span>

</li>

<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">Morgan B. Adair (1994) "<a rel="nofollow" class="external text" href="http://support.novell.com/techcenter/articles/dnd19940502.html">The AppWare Foundation: An Overview</a>"</span>

</li>

<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">Software UNO Ltd (1997) "<a rel="nofollow" class="external text" href="http://softwareuno.com/products/index.htm">Software UNO Products and Services</a>"</span>

</li>

</ol></div></div>

<div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2></div>

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</style><cite id="CITEREFNeward1998" class="citation book cs1">Neward, Ted (1998). <span class="id-lock-registration" title="Free registration required"><a rel="nofollow" class="external text" href="https://archive.org/details/advancedowl50pow00newa"><i>Advanced OWL 5.0: Power Tools for OWL Programmers</i></a></span>. Manning. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>1-884777-46-5</bdi>.</cite></li>

<li><cite id="CITEREFWalnum1994" class="citation book cs1">Walnum, Clayton (1994). <span class="id-lock-registration" title="Free registration required"><a rel="nofollow" class="external text" href="https://archive.org/details/borlandc4xtipstr0000waln"><i>Borland C++ 4.x Tips, Tricks and Traps</i></a></span>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>1-56529-895-0</bdi>.</cite></li>

<li><cite id="CITEREFFaison1995" class="citation book cs1">Faison, Ted (1995). <i>Borland C++ 4.5 Object-Oriented Programming</i>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-672-30605-0</bdi>.</cite></li>

<li><cite class="citation book cs1"><i>Borland C++ 5.0 Programming Starter Kit Deluxe</i>. Pearson Software. June 2002. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>1-57595-430-3</bdi>.</cite></li>

<li><cite id="CITEREFFaison" class="citation book cs1">Faison, Ted. <i>Borland C++ Object Oriented Programs</i>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-672-30775-1</bdi>.</cite></li>

<li><cite id="CITEREFNeward1998" class="citation book cs1">Neward, Ted (1998). <i>Core OWL 5.0: OWL Internals for Advanced</i>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>1-884777-50-3</bdi>.</cite></li>

<li><cite id="CITEREFFaison" class="citation book cs1">Faison, Ted. <i>Inside Object Windows Library</i>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-672-30219-0</bdi>.</cite></li>

<li><cite id="CITEREFSwan1995" class="citation book cs1">Swan, Tom (1995). <i>Mastering Borland C++ 4.5</i>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-672-30546-1</bdi>.</cite></li>

<li><cite id="CITEREFBroquard1993" class="citation book cs1">Broquard, Victor E. (20 May 1993). <i>Object Windows 2.0 Programming</i>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-553-37120-8</bdi>.</cite></li>

<li><cite id="CITEREFBroquard1997" class="citation book cs1">Broquard, Victor E. (1997). <i>Programming for OWL for Windows 95</i>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-13-492273-7</bdi>.</cite></li>

<li><cite id="CITEREFSpencer1995" class="citation book cs1">Spencer, Ian (1995). <i>Teach yourself OWL Programming in 21 days</i>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-672-30600-X</bdi>.</cite></li>

<li><cite id="CITEREFHeiny1994" class="citation book cs1">Heiny, Loren (10 October 1994). <i>Windows Graphic Programming with Borland C++</i>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-471-30930-3</bdi>.</cite></li></ol>

</div>

<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><span class="official-website"><span class="url"><a rel="nofollow" class="external text" href="https://sourceforge.net/p/owlnext/wiki/">Official website</a></span></span> </li>

<li><a rel="nofollow" class="external text" href="http://cc.embarcadero.com/partners/bcb5/exclusive/object_windows_library/index.html">OWL source code from Embarcadero</a></li>

<li><a rel="nofollow" class="external text" href="http://cc.embarcadero.com/partners/cppbuilder2007/owlnext/owlnext/index.html">OWLNext 6.20 from Embarcadero</a></li>

<li><a rel="nofollow" class="external text" href="http://cc.embarcadero.com/item/27976">OWLNext 6.30 from Embarcadero</a></li></ul>

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</style></div><div role="navigation" class="navbox" aria-labelledby="Pascal_programming_language_family576" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3"><style data-mw-deduplicate="TemplateStyles:r1239400231">

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</style><div id="Pascal_programming_language_family576" style="font-size:114%;margin:0 4em"><a href="Pascal_(programming_language)" title="Pascal (programming language)">Pascal programming language</a> family</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Programming_language#Dialects,_flavors_and_implementations" title="Programming language">Dialects</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Pascal_(programming_language)" title="Pascal (programming language)">Pascal</a></li>

<li><a href="Object_Pascal" title="Object Pascal">Object Pascal</a></li>

<li><a href="Pascal_Script" title="Pascal Script">Pascal Script</a></li>

<li><a href="Oxygene_(programming_language)" title="Oxygene (programming language)">Oxygene</a></li>

<li><a href="Clascal" title="Clascal">Clascal</a></li>

<li><a href="Concurrent_Pascal" title="Concurrent Pascal">Concurrent Pascal</a></li>

<li><a href="Joyce_(programming_language)" title="Joyce (programming language)">Joyce</a></li>

<li><a href="SuperPascal" title="SuperPascal">SuperPascal</a></li></ul>

</div></td><td class="noviewer navbox-image" rowspan="6" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Compiler" title="Compiler">Compilers</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Current</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Delphi_(software)" title="Delphi (software)">Delphi</a> (<a href="History_of_Delphi_(software)" title="History of Delphi (software)">history</a>)</li>

<li><a href="Oxygene_(programming_language)" title="Oxygene (programming language)">Oxygene</a></li>

<li><a href="Pascal_(programming_language)#Compilers_and_interpreters" title="Pascal (programming language)">VSI Pascal</a></li>

<li><a href="IP_Pascal" title="IP Pascal">IP Pascal</a></li>

<li><a href="Free_Pascal" title="Free Pascal">Free Pascal</a> (<a href="Lazarus_(software)" title="Lazarus (software)">Lazarus</a>)</li>

<li><a href="PascalABC.NET" title="PascalABC.NET">PascalABC.NET</a></li>

<li><a href="GNU_Pascal" title="GNU Pascal">GNU Pascal</a></li>

<li><a href="Turbo51" title="Turbo51">Turbo51</a></li>

<li><a href="Pic_Micro_Pascal" title="Pic Micro Pascal">Pic Micro Pascal</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Discontinued</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Virtual_Pascal" title="Virtual Pascal">Virtual Pascal</a></li>

<li><a href="Apple_Pascal" title="Apple Pascal">Apple Pascal</a></li>

<li><a href="Borland_Kylix" title="Borland Kylix">Borland Kylix</a></li>

<li><a href="Turbo_Pascal" title="Turbo Pascal">Turbo Pascal</a></li>

<li><a href="Microsoft_Pascal" title="Microsoft Pascal">Microsoft Pascal</a></li>

<li><a href="UCSD_Pascal" title="UCSD Pascal">UCSD Pascal</a></li>

<li><a href="JRT_Pascal" title="JRT Pascal">JRT Pascal</a></li>

<li><a href="Pascal/MT%2B" title="Pascal/MT+">Pascal/MT+</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="API" title="API">API</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="FireMonkey" title="FireMonkey">FireMonkey</a></li>

<li><a href="OpenWire_(library)" title="OpenWire (library)">OpenWire</a></li>

<li><a href="Turbo_Vision" title="Turbo Vision">Turbo Vision</a></li>

<li><a href="Visual_Component_Library" title="Visual Component Library">Visual Component Library</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Microcomputer" title="Microcomputer">Microcomputer</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Pascal_MicroEngine" title="Pascal MicroEngine">Pascal MicroEngine</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Comparison_of_programming_languages" title="Comparison of programming languages">Comparisons</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Comparison_of_Pascal_and_C" title="Comparison of Pascal and C">Pascal and C</a></li>

<li><a href="Comparison_of_Pascal_and_Delphi" title="Comparison of Pascal and Delphi">Pascal and Delphi</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Designer</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Niklaus_Wirth" title="Niklaus Wirth">Niklaus Wirth</a></li></ul>

</div></td></tr><tr><td class="navbox-abovebelow" colspan="3"><div>

<ul><li><a href="Generic_programming#Genericity_in_Pascal" title="Generic programming">Genericity</a></li></ul>

<dl><dt><span class="nobold">Related to</span></dt>

<dd><a href="ALGOL" title="ALGOL">ALGOL</a> (1958)</dd>

<dd><a href="Modula-2" title="Modula-2">Modula-2</a> (1977)</dd>

<dd><a href="Oberon_(programming_language)" title="Oberon (programming language)">Oberon</a> (1986)</dd>

<dd><a href="Modula-3" title="Modula-3">Modula-3</a> (1988)</dd>

<dd><a href="Oberon-2" title="Oberon-2">Oberon-2</a> (1991)</dd>

<dd><a href="Component_Pascal" title="Component Pascal">Component Pascal</a> (1991)</dd></dl>

</div></td></tr></tbody></table></div>

<div class="navbox-styles"></div><div role="navigation" class="navbox" aria-labelledby="List_of_widget_toolkits573" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="List_of_widget_toolkits573" style="font-size:114%;margin:0 4em"><a href="List_of_widget_toolkits" title="List of widget toolkits">List</a> of <a href="Widget_toolkit" title="Widget toolkit">widget toolkits</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><b>Low-level platform-specific</b></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="AmigaOS" title="AmigaOS">AmigaOS</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Intuition_(Amiga)" title="Intuition (Amiga)">Intuition</a></li></ul>

<ul><li><a href="Macintosh_Toolbox" title="Macintosh Toolbox">Macintosh Toolbox</a></li>

<li><a href="Carbon_(API)" title="Carbon (API)">Carbon</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="Microsoft_Windows" title="Microsoft Windows">Windows</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Windows_API" title="Windows API">Windows API</a></li>

<ul><li><a href="Windows_Runtime" title="Windows Runtime">WinRT</a></li></ul></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="Unix" title="Unix">Unix</a>,<br>under <a href="X_Window_System" title="X Window System">X11</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="X_Toolkit_Intrinsics" title="X Toolkit Intrinsics">X Toolkit Intrinsics</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="BeOS" title="BeOS">BeOS</a>, <a href="Haiku_(operating_system)" title="Haiku (operating system)">Haiku</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="Android_(operating_system)" title="Android (operating system)">Android</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="CLI38" scope="row" class="navbox-group" style="width:1%"><a href="Common_Language_Infrastructure" title="Common Language Infrastructure">CLI</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Mono_(software)#Xamarin.Android" title="Mono (software)">Xamarin.Android</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><b>Low Level Cross-platform</b></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Common_Language_Infrastructure" title="Common Language Infrastructure">CLI</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="OpenTK" title="OpenTK">OpenTK</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="C_(programming_language)" title="C (programming language)">C</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Simple_DirectMedia_Layer" title="Simple DirectMedia Layer">Simple DirectMedia Layer</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Java_(programming_language)" title="Java (programming language)">Java</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Lightweight_Java_Game_Library" class="mw-redirect" title="Lightweight Java Game Library">LWJGL</a></li></ul>

</div></td></tr><tr><td colspan="2" class="navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><b>High-level, platform-specific</b></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="AmigaOS" title="AmigaOS">AmigaOS</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="BOOPSI" title="BOOPSI">BOOPSI</a></li>

<li><a href="ReAction_GUI" title="ReAction GUI">ReAction GUI</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="Classic_Mac_OS" title="Classic Mac OS">Classic Mac OS</a>, <a href="MacOS" title="MacOS">macOS</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Object_Pascal" title="Object Pascal">Object Pascal</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="MacApp" title="MacApp">MacApp</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Objective-C" title="Objective-C">Objective-C</a>, <a href="Swift_(programming_language)" title="Swift (programming language)">Swift</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Cocoa_(API)" title="Cocoa (API)">Cocoa</a></li>

<li><a href="Cocoa_Touch" class="mw-redirect" title="Cocoa Touch">Cocoa Touch</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="C%2B%2B" title="C++">C++</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="MacApp" title="MacApp">MacApp</a></li>

<li><a href="PowerPlant" title="PowerPlant">PowerPlant</a></li>

<li><a href="THINK_C" title="THINK C">THINK C</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Common_Language_Infrastructure" title="Common Language Infrastructure">CLI</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Xamarin#Xamarin.Mac" title="Xamarin">Xamarin.Mac</a></li>

<li><a href="Mono_(software)#Xamarin.iOS" title="Mono (software)">Xamarin.iOS</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="Microsoft_Windows" title="Microsoft Windows">Windows</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Common_Language_Infrastructure" title="Common Language Infrastructure">CLI</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Windows_Forms" title="Windows Forms">Windows Forms</a></li>

<ul><li><a href="Windows_Presentation_Foundation" title="Windows Presentation Foundation">Windows Presentation Foundation</a></li>

<li><a href="Windows_UI_Library" title="Windows UI Library">Windows UI Library</a></li>

<li><a href="Microsoft_Silverlight" title="Microsoft Silverlight">Silverlight</a></li></ul></li>

<li><a href="Microsoft_XNA" title="Microsoft XNA">Microsoft XNA</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="C%2B%2B" title="C++">C++</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Active_Template_Library" title="Active Template Library">Active Template Library</a></li>

<li><a href="Windows_Template_Library" title="Windows Template Library">Windows Template Library</a></li>

</ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Object_Pascal" title="Object Pascal">Object Pascal</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Visual_Component_Library" title="Visual Component Library">Visual Component Library</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">On <a href="Unix" title="Unix">Unix</a>,<br>under <a href="X_Window_System" title="X Window System">X11</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="X_Athena_Widgets" title="X Athena Widgets">Athena (Xaw)</a></li>

<li><a href="LessTif" title="LessTif">LessTif</a></li>

<li><a href="Motif_(software)" title="Motif (software)">Motif</a></li>

<li><a href="XForms_(toolkit)" title="XForms (toolkit)">XForms</a></li>

<li><a href="XView" title="XView">XView</a></li></ul>

<ul><li><a href="Android_software_development#Qt_for_Android" title="Android software development">Qt for Android</a></li></ul>

</div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><b>High-level, cross-platform</b></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="C_(programming_language)" title="C (programming language)">C</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Enlightenment_Foundation_Libraries" title="Enlightenment Foundation Libraries">Enlightenment Foundation Libraries</a></li>

<li><a href="XForms_(toolkit)" title="XForms (toolkit)">XForms</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="C%2B%2B" title="C++">C++</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Bedrock_(framework)" title="Bedrock (framework)">Bedrock</a></li>

<li><a href="CEGUI" title="CEGUI">CEGUI</a></li>

<li><a href="Component_Library_for_Cross_Platform" title="Component Library for Cross Platform">Component Library for Cross Platform</a></li>

<li><a href="Fox_toolkit" title="Fox toolkit">FOX toolkit</a></li>

<li><a href="OpenGL_User_Interface_Library" class="mw-redirect" title="OpenGL User Interface Library">OpenGL User Interface Library</a></li>

<li><a href="Gtkmm" title="Gtkmm">gtkmm</a></li>

<li><a href="Rogue_Wave_Software" title="Rogue Wave Software">Rogue Wave Views</a></li>

<li><a href="TnFOX" class="mw-redirect" title="TnFOX">TnFOX</a></li>

<li><a href="WxWidgets" title="WxWidgets">wxWidgets</a></li>

<li><a href="Simple_and_Fast_Multimedia_Library" title="Simple and Fast Multimedia Library">Simple and Fast Multimedia Library</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Objective-C" title="Objective-C">Objective-C</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="GNUstep" title="GNUstep">GNUstep</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Common_Language_Infrastructure" title="Common Language Infrastructure">CLI</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Tao_Framework" title="Tao Framework">Tao Framework</a>

<ul><li><a href="OpenTK" title="OpenTK">OpenTK</a></li></ul></li>

<li><a href="MonoGame" title="MonoGame">MonoGame</a></li>

<li><a href="Moonlight_(runtime)" title="Moonlight (runtime)">Moonlight</a></li>

<li><a href="Xamarin#Xamarin.Forms" title="Xamarin">Xamarin.Forms</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Adobe_Flash" title="Adobe Flash">Adobe Flash</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Apache_Flex" title="Apache Flex">Apache Flex</a>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Go_(programming_language)" title="Go (programming language)">Go</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Haskell" title="Haskell">Haskell</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="WxHaskell" title="WxHaskell">wxHaskell</a></li></ul>

<ul><li><a href="Abstract_Window_Toolkit" title="Abstract Window Toolkit">Abstract Window Toolkit</a></li>

<li><a href="JavaFX" title="JavaFX">JavaFX</a></li>

<li><a href="Qt_Jambi" class="mw-redirect" title="Qt Jambi">Qt Jambi</a></li>

<li><a href="Swing_(Java)" title="Swing (Java)">Swing</a></li>

<li><a href="Standard_Widget_Toolkit" title="Standard Widget Toolkit">Standard Widget Toolkit</a></li>

<li><a href="Google_Web_Toolkit" title="Google Web Toolkit">Google Web Toolkit</a></li>

<li><a href="Lightweight_User_Interface_Toolkit" title="Lightweight User Interface Toolkit">Lightweight User Interface Toolkit</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="JavaScript" title="JavaScript">JavaScript</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Dojo_Toolkit" title="Dojo Toolkit">Dojo Toolkit</a></li>

<li><a href="Google_Closure_Tools" title="Google Closure Tools">Google Closure Tools</a></li>

<li><a href="JQuery_UI" title="JQuery UI">jQuery UI</a></li>

<li><a href="OpenUI5" title="OpenUI5">OpenUI5</a></li>

<li><a href="Qooxdoo" title="Qooxdoo">Qooxdoo</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Common_Lisp" title="Common Lisp">Common Lisp</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Allegro_Common_Lisp" title="Allegro Common Lisp">Common Graphics</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Lua" title="Lua">Lua</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Pascal_(programming_language)" title="Pascal (programming language)">Pascal</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Lazarus_Component_Library" title="Lazarus Component Library">Lazarus Component Library</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Object_Pascal" title="Object Pascal">Object Pascal</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Component_Library_for_Cross_Platform" title="Component Library for Cross Platform">Component Library for Cross Platform</a></li>

<li><a href="FpGUI" title="FpGUI">fpGUI</a></li>

<li><a href="IP_Pascal" title="IP Pascal">IP Pascal</a></li>

<li><a href="FireMonkey" title="FireMonkey">FireMonkey</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Perl" title="Perl">Perl</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="WxPerl" class="mw-redirect" title="WxPerl">wxPerl</a></li></ul>

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<li><a href="WxPHP" title="WxPHP">wxPHP</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Python_(programming_language)" title="Python (programming language)">Python</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Tkinter" title="Tkinter">Tkinter</a></li>

<li><a href="PySide" title="PySide">PySide</a></li>

<li><a href="PyGTK" title="PyGTK">PyGTK</a></li>

<li><a href="WxPython" title="WxPython">wxPython</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Ruby_(programming_language)" title="Ruby (programming language)">Ruby</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Shoes_(GUI_toolkit)" class="mw-redirect" title="Shoes (GUI toolkit)">Shoes</a></li>

<li><a href="QtRuby" class="mw-redirect" title="QtRuby">QtRuby</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Tcl" title="Tcl">Tcl</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="XML" title="XML">XML</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Glade_Interface_Designer" title="Glade Interface Designer">GladeXML</a></li>

<li><a href="Lively_Kernel" title="Lively Kernel">Lively Kernel</a></li>

<li><a href="Extensible_Application_Markup_Language" title="Extensible Application Markup Language">Extensible Application Markup Language</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Unix_shell" title="Unix shell">shell</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Dialog_(software)" title="Dialog (software)">Dialog</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Dart_(programming_language)" title="Dart (programming language)">Dart</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Flutter_(software)" title="Flutter (software)">Flutter</a></li></ul>

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This article is issued from <a class="external text" title="Last edited on 2025-04-19" href="https://en.wikipedia.org/wiki/?title=Object_Windows_Library&oldid=1286387674">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.

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