<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html xmlns:fn="http://www.w3.org/2005/02/xpath-functions"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <link rel="stylesheet" href="../../../../doc/otp_doc.css" type="text/css"> <title>Erlang -- GS User's Guide</title> </head> <body bgcolor="white" text="#000000" link="#0000ff" vlink="#ff00ff" alink="#ff0000"><div id="container"> <script id="js" type="text/javascript" language="JavaScript" src="../../../../doc/js/flipmenu/flipmenu.js"></script><script id="js2" type="text/javascript" src="../../../../doc/js/erlresolvelinks.js"></script><script language="JavaScript" type="text/javascript"> <!-- function getWinHeight() { var myHeight = 0; if( typeof( window.innerHeight ) == 'number' ) { //Non-IE myHeight = window.innerHeight; } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) { //IE 6+ in 'standards compliant mode' myHeight = document.documentElement.clientHeight; } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) { //IE 4 compatible myHeight = document.body.clientHeight; } return myHeight; } function setscrollpos() { var objf=document.getElementById('loadscrollpos'); document.getElementById("leftnav").scrollTop = objf.offsetTop - getWinHeight()/2; } function addEvent(obj, evType, fn){ if (obj.addEventListener){ obj.addEventListener(evType, fn, true); return true; } else if (obj.attachEvent){ var r = obj.attachEvent("on"+evType, fn); return r; } else { return false; } } addEvent(window, 'load', setscrollpos); //--></script><div id="leftnav"><div class="innertube"> <img alt="Erlang logo" src="../../../../doc/erlang-logo.png"><br><small><a href="users_guide.html">User's Guide</a><br><a href="index.html">Reference Manual</a><br><a href="release_notes.html">Release Notes</a><br><a href="../pdf/gs-1.5.15.1.pdf">PDF</a><br><a href="../../../../doc/index.html">Top</a></small><p><strong>Graphics System (GS)</strong><br><strong>User's Guide</strong><br><small>Version 1.5.15.1</small></p> <br><a href="javascript:openAllFlips()">Expand All</a><br><a href="javascript:closeAllFlips()">Contract All</a><p><small><strong>Chapters</strong></small></p> <ul class="flipMenu" imagepath="../../../../doc/js/flipmenu"> <li id="no" title="GS - The Graphics System" expanded="false">GS - The Graphics System<ul> <li><a href="gs_chapter1.html"> Top of chapter </a></li> <li title="Introduction"><a href="gs_chapter1.html#id62365">Introduction</a></li> <li title="Basic Architecture of GS"><a href="gs_chapter1.html#id61203">Basic Architecture of GS</a></li> </ul> </li> <li id="no" title="Interface Functions" expanded="false">Interface Functions<ul> <li><a href="gs_chapter2.html"> Top of chapter </a></li> <li title="Overview"><a href="gs_chapter2.html#id61459">Overview</a></li> <li title="A First Example"><a href="gs_chapter2.html#id57477">A First Example</a></li> <li title="Creating Objects"><a href="gs_chapter2.html#id63683">Creating Objects</a></li> <li title="Ownership"><a href="gs_chapter2.html#id59961">Ownership</a></li> <li title="Naming Objects"><a href="gs_chapter2.html#id59975">Naming Objects</a></li> </ul> </li> <li id="no" title="Options" expanded="false">Options<ul> <li><a href="gs_chapter3.html"> Top of chapter </a></li> <li title="The Option Concept"><a href="gs_chapter3.html#id58188">The Option Concept</a></li> <li title="The Option Tables"><a href="gs_chapter3.html#id64276">The Option Tables</a></li> <li title="Config-Only Options"><a href="gs_chapter3.html#id64432">Config-Only Options</a></li> <li title="Read-Only Options"><a href="gs_chapter3.html#id64553">Read-Only Options</a></li> <li title="Data Types"><a href="gs_chapter3.html#id64674">Data Types</a></li> </ul> </li> <li id="no" title="Events" expanded="false">Events<ul> <li><a href="gs_chapter4.html"> Top of chapter </a></li> <li title="Event Messages"><a href="gs_chapter4.html#id65002">Event Messages</a></li> <li title="Generic Events"><a href="gs_chapter4.html#id65107">Generic Events</a></li> <li title="Object Specific Events"><a href="gs_chapter4.html#id65547">Object Specific Events</a></li> <li title="Matching Events Against Object Identifiers"><a href="gs_chapter4.html#id65664">Matching Events Against Object Identifiers</a></li> <li title="Matching Events Against Object Names"><a href="gs_chapter4.html#id65689">Matching Events Against Object Names</a></li> <li title="Matching Events Against the Data Field"><a href="gs_chapter4.html#id65716">Matching Events Against the Data Field</a></li> <li title="Experimenting with Events"><a href="gs_chapter4.html#id65756">Experimenting with Events</a></li> </ul> </li> <li id="no" title="Fonts" expanded="false">Fonts<ul> <li><a href="gs_chapter5.html"> Top of chapter </a></li> <li title="The Font Model"><a href="gs_chapter5.html#id65831">The Font Model</a></li> </ul> </li> <li id="no" title="Default Values" expanded="false">Default Values<ul> <li><a href="gs_chapter6.html"> Top of chapter </a></li> <li title="The Default Value Model"><a href="gs_chapter6.html#id66044">The Default Value Model</a></li> </ul> </li> <li id="no" title="The Packer" expanded="false">The Packer<ul> <li><a href="gs_chapter7.html"> Top of chapter </a></li> <li title="The Packer"><a href="gs_chapter7.html#id66217">The Packer</a></li> </ul> </li> <li id="no" title="Built-In Objects" expanded="false">Built-In Objects<ul> <li><a href="gs_chapter8.html"> Top of chapter </a></li> <li title="Overview"><a href="gs_chapter8.html#id66484">Overview</a></li> <li title="Generic Options"><a href="gs_chapter8.html#id66791">Generic Options</a></li> <li title="Window"><a href="gs_chapter8.html#id67843">Window</a></li> <li title="Button"><a href="gs_chapter8.html#id68226">Button</a></li> <li title="Label"><a href="gs_chapter8.html#id68734">Label</a></li> <li title="Frame"><a href="gs_chapter8.html#id68905">Frame</a></li> <li title="Entry"><a href="gs_chapter8.html#id69050">Entry</a></li> <li title="Listbox"><a href="gs_chapter8.html#id69366">Listbox</a></li> <li title="Canvas"><a href="gs_chapter8.html#id70050">Canvas</a></li> <li title="Menu"><a href="gs_chapter8.html#id72195">Menu</a></li> <li title="Grid"><a href="gs_chapter8.html#id80608">Grid</a></li> <li title="Editor"><a href="gs_chapter8.html#id81434">Editor</a></li> <li title="Scale"><a href="gs_chapter8.html#id82183">Scale</a></li> </ul> </li> </ul> </div></div> <div id="content"> <div class="innertube"> <div class="frontpage"></div> <center><h1>Graphics System (GS) User's Guide</h1></center> <center><h4>Version 1.5.15.1</h4></center> <center><h4>December 6 2012</h4></center> </div> <div class="footer"> <hr> <p>Copyright © 1997-2012 Ericsson AB. 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