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renderer=
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"Content-Type" content=
"text/html; charset=UTF-8" /><title>glXQueryVersion
</title><meta name=
"generator" content=
"DocBook XSL Stylesheets V1.73.2" /></head><body><div class=
"refentry" lang=
"en" xml:
lang=
"en"><a id=
"glXQueryVersion"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glXQueryVersion — return the version numbers of the GLX extension
</p></div><div class=
"refsynopsisdiv"><h2>C Specification
</h2><div class=
"funcsynopsis"><table border=
"0" summary=
"Function synopsis" cellspacing=
"0" cellpadding=
"0"><tr><td><code class=
"funcdef">Bool
<b class=
"fsfunc">glXQueryVersion
</b>(
</code></td><td>Display *
</td><td><var class=
"pdparam">dpy
</var>,
</td></tr><tr><td> </td><td>int *
</td><td><var class=
"pdparam">major
</var>,
</td></tr><tr><td> </td><td>int *
</td><td><var class=
"pdparam">minor
</var><code>)
</code>;
</td></tr></table></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"parameters"></a><h2>Parameters
</h2><div class=
"variablelist"><dl><dt><span class=
"term"><em class=
"parameter"><code>dpy
</code></em></span></dt><dd><p>
4 Specifies the connection to the X server.
5 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>major
</code></em></span></dt><dd><p>
6 Returns the major version number of the GLX server extension.
7 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>minor
</code></em></span></dt><dd><p>
8 Returns the minor version number of the GLX server extension.
9 </p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p>
10 <code class=
"function">glXQueryVersion
</code> returns the major and minor version numbers of the GLX extension
11 implemented by the server associated with connection
<em class=
"parameter"><code>dpy
</code></em>.
12 Implementations with the same major version number are upward compatible,
13 meaning that the implementation with the higher minor number is a superset
14 of the version with the lower minor number.
16 <em class=
"parameter"><code>major
</code></em> and
<em class=
"parameter"><code>minor
</code></em> do not return values if they are specified as
17 <code class=
"constant">NULL
</code>.
18 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p>
19 <code class=
"function">glXQueryVersion
</code> returns
<code class=
"constant">False
</code> if it fails,
20 <code class=
"constant">True
</code> otherwise.
22 <em class=
"parameter"><code>major
</code></em> and
<em class=
"parameter"><code>minor
</code></em> are not updated when
<code class=
"constant">False
</code> is returned.
23 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"seealso"></a><h2>See Also
</h2><p>
24 <a class=
"citerefentry" href=
"glXQueryExtension.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glXQueryExtension
</span></span></a>
25 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
26 Copyright
<span class=
"trademark"></span>©
1991-
2006
27 Silicon Graphics, Inc. This document is licensed under the SGI
28 Free Software B License. For details, see
29 <a class=
"ulink" href=
"http://oss.sgi.com/projects/FreeB/" target=
"_top">http://oss.sgi.com/projects/FreeB/
</a>.
30 </p></div></div></body></html>