<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>SFML - Simple and Fast Multimedia Library</title>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<link href="doxygen.css" rel="stylesheet" type="text/css" />
<link href="tabs.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="logo">
<img src="./logo.jpg" width="770" height="200" title="SFML home" alt="SFML logo" />
</div>
<!-- Generated by Doxygen 1.6.3 -->
<div class="navigation" id="top">
<div class="tabs">
<ul>
<li><a href="index.htm"><span>Main Page</span></a></li>
<li><a href="modules.htm"><span>Modules</span></a></li>
<li class="current"><a href="annotated.htm"><span>Classes</span></a></li>
<li><a href="files.htm"><span>Files</span></a></li>
</ul>
</div>
<div class="tabs">
<ul>
<li><a href="annotated.htm"><span>Class List</span></a></li>
<li><a href="classes.htm"><span>Class Index</span></a></li>
<li><a href="hierarchy.htm"><span>Class Hierarchy</span></a></li>
<li><a href="functions.htm"><span>Class Members</span></a></li>
</ul>
</div>
<div class="navpath"><b>sf</b>::<a class="el" href="classsf_1_1Context.htm">Context</a>
</div>
</div>
<div class="contents">
<h1>sf::Context Class Reference<br/>
<small>
[<a class="el" href="group__window.htm">Window module</a>]</small>
</h1><!-- doxytag: class="sf::Context" --><!-- doxytag: inherits="sf::GlResource,sf::NonCopyable" -->
<p>Class holding a valid drawing context.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="Context_8hpp_source.htm">Context.hpp</a>></code></p>
<div class="dynheader">
Inheritance diagram for sf::Context:</div>
<div class="dynsection">
<div class="center">
<img src="classsf_1_1Context.png" usemap="#sf::Context_map" alt=""/>
<map id="sf::Context_map" name="sf::Context_map">
<area href="classsf_1_1GlResource.htm" alt="sf::GlResource" shape="rect" coords="0,0,105,24"/>
<area href="classsf_1_1NonCopyable.htm" alt="sf::NonCopyable" shape="rect" coords="115,0,220,24"/>
</map>
</div>
</div>
<p><a href="classsf_1_1Context-members.htm">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classsf_1_1Context.htm#aba22797a790706ca2c5c04ee39f2b555">Context</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Default constructor. <a href="#aba22797a790706ca2c5c04ee39f2b555"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classsf_1_1Context.htm#a805b1bbdb3e52b1fda7c9bf2cd6ca86b">~Context</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <a href="#a805b1bbdb3e52b1fda7c9bf2cd6ca86b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classsf_1_1Context.htm#aaddb73012bfda0785a2fa46eebc78fc8">SetActive</a> (bool active)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Activate or deactivate explicitely the context. <a href="#aaddb73012bfda0785a2fa46eebc78fc8"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classsf_1_1Context.htm#a2a9e3529e48919120e6b6fc10bad296c">Context</a> (const <a class="el" href="structsf_1_1ContextSettings.htm">ContextSettings</a> &settings, unsigned int width, unsigned int height)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Construct a in-memory context. <a href="#a2a9e3529e48919120e6b6fc10bad296c"></a><br/></td></tr>
<tr><td colspan="2"><h2>Static Private Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a01c5ad327b847c8a107dbc69ee308711"></a><!-- doxytag: member="sf::Context::EnsureGlContext" ref="a01c5ad327b847c8a107dbc69ee308711" args="()" -->
static void </td><td class="memItemRight" valign="bottom"><b>EnsureGlContext</b> ()</td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Class holding a valid drawing context. </p>
<p>If you need to make OpenGL calls without having an active window (like in a thread), you can use an instance of this class to get a valid context.</p>
<p>Having a valid context is necessary for *every* OpenGL call.</p>
<p>Note that a context is only active in its current thread, if you create a new thread it will have no valid context by default.</p>
<p>To use a <a class="el" href="classsf_1_1Context.htm" title="Class holding a valid drawing context.">sf::Context</a> instance, just construct it and let it live as long as you need a valid context. No explicit activation is needed, all it has to do is to exist. Its destructor will take care of deactivating and freeing all the attached resources.</p>
<p>Usage example: </p>
<div class="fragment"><pre class="fragment"> <span class="keywordtype">void</span> ThreadFunction(<span class="keywordtype">void</span>*)
{
<a class="code" href="classsf_1_1Context.htm" title="Class holding a valid drawing context.">sf::Context</a> context;
<span class="comment">// from now on, you have a valid context</span>
<span class="comment">// you can make OpenGL calls</span>
glClear(GL_DEPTH_BUFFER_BIT);
}
<span class="comment">// the context is automatically deactivated and destroyed</span>
<span class="comment">// by the sf::Context destructor</span>
</pre></div>
<p>Definition at line <a class="el" href="Context_8hpp_source.htm#l00048">48</a> of file <a class="el" href="Context_8hpp_source.htm">Context.hpp</a>.</p>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="aba22797a790706ca2c5c04ee39f2b555"></a><!-- doxytag: member="sf::Context::Context" ref="aba22797a790706ca2c5c04ee39f2b555" args="()" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">sf::Context::Context </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Default constructor. </p>
<p>The constructor creates and activates the context </p>
</div>
</div>
<a class="anchor" id="a805b1bbdb3e52b1fda7c9bf2cd6ca86b"></a><!-- doxytag: member="sf::Context::~Context" ref="a805b1bbdb3e52b1fda7c9bf2cd6ca86b" args="()" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">sf::Context::~Context </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Destructor. </p>
<p>The desctructor deactivates and destroys the context </p>
</div>
</div>
<a class="anchor" id="a2a9e3529e48919120e6b6fc10bad296c"></a><!-- doxytag: member="sf::Context::Context" ref="a2a9e3529e48919120e6b6fc10bad296c" args="(const ContextSettings &settings, unsigned int width, unsigned int height)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">sf::Context::Context </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="structsf_1_1ContextSettings.htm">ContextSettings</a> & </td>
<td class="paramname"> <em>settings</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"> <em>width</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"> <em>height</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Construct a in-memory context. </p>
<p>This constructor is for internal use, you don't need to bother with it.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>settings</em> </td><td>Creation parameters </td></tr>
<tr><td valign="top"></td><td valign="top"><em>width</em> </td><td>Back buffer width </td></tr>
<tr><td valign="top"></td><td valign="top"><em>height</em> </td><td>Back buffer height </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="aaddb73012bfda0785a2fa46eebc78fc8"></a><!-- doxytag: member="sf::Context::SetActive" ref="aaddb73012bfda0785a2fa46eebc78fc8" args="(bool active)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">bool sf::Context::SetActive </td>
<td>(</td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>active</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Activate or deactivate explicitely the context. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>active</em> </td><td>True to activate, false to deactivate</td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>True on success, false on failure </dd></dl>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="Context_8hpp_source.htm">Context.hpp</a></li>
</ul>
</div>
<p id="footer">
:: Copyright © 2007-2008 Laurent Gomila, all rights reserved ::
Documentation generated by <a href="http://www.doxygen.org/" title="doxygen website">doxygen 1.5.2</a> ::
</p>
</body>
</html>
distrib
>
Mandriva
>
2010.2
>
i586
>
media
>
contrib-backports
>
by-pkgid
>
f00c83953c7eb23ee3c18f4f35d8eb6b
>
files
>
154
