102f4aeb0Sopenharmony_ci<?xml version="1.0" encoding="UTF-8"?> 202f4aeb0Sopenharmony_ci<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"> 302f4aeb0Sopenharmony_ci<!-- saved from url=(0013)about:internet --> 402f4aeb0Sopenharmony_ci<?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" xmlns:xlink="http://www.w3.org/1999/xlink" pref:renderer="mathplayer-dl"> 502f4aeb0Sopenharmony_ci <head> 602f4aeb0Sopenharmony_ci <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 702f4aeb0Sopenharmony_ci <style xmlns="" type="text/css"> 802f4aeb0Sopenharmony_ci /* This style sets a margin around the entire page */ 902f4aeb0Sopenharmony_ci html, body { 1002f4aeb0Sopenharmony_ci margin: 10px; 1102f4aeb0Sopenharmony_ci } 1202f4aeb0Sopenharmony_ci 1302f4aeb0Sopenharmony_ci p { 1402f4aeb0Sopenharmony_ci font: normal 16px verdana, sans-serif; 1502f4aeb0Sopenharmony_ci margin: 0; 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18902f4aeb0Sopenharmony_ci } 19002f4aeb0Sopenharmony_ci 19102f4aeb0Sopenharmony_ci div.refsect2 table { 19202f4aeb0Sopenharmony_ci margin-top: 0; 19302f4aeb0Sopenharmony_ci background-color: #e6e6e6; 19402f4aeb0Sopenharmony_ci width: 100%; 19502f4aeb0Sopenharmony_ci border: 0 solid #000; 19602f4aeb0Sopenharmony_ci padding: 2px; 19702f4aeb0Sopenharmony_ci font: normal 16px courier new, monospace !important; 19802f4aeb0Sopenharmony_ci } 19902f4aeb0Sopenharmony_ci 20002f4aeb0Sopenharmony_ci div.refsect2 td { 20102f4aeb0Sopenharmony_ci background-color: #e6e6e6; 20202f4aeb0Sopenharmony_ci font: normal 16px courier new, monospace !important; 20302f4aeb0Sopenharmony_ci white-space:pre; 20402f4aeb0Sopenharmony_ci } 20502f4aeb0Sopenharmony_ci 20602f4aeb0Sopenharmony_ci /* COPYRIGHT: This style formats the text of the copyright statement at the bottom of the page */ 20702f4aeb0Sopenharmony_ci div.refsect3 { 20802f4aeb0Sopenharmony_ci font: normal 11px verdana, sans-serif; 20902f4aeb0Sopenharmony_ci margin-top: 50px; 21002f4aeb0Sopenharmony_ci margin-bottom: 20px; 21102f4aeb0Sopenharmony_ci padding-top: 0; 21202f4aeb0Sopenharmony_ci padding-bottom: 0; 21302f4aeb0Sopenharmony_ci } 21402f4aeb0Sopenharmony_ci 21502f4aeb0Sopenharmony_ci</style> 21602f4aeb0Sopenharmony_ci <title>eglQueryString</title> 21702f4aeb0Sopenharmony_ci <meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /> 21802f4aeb0Sopenharmony_ci </head> 21902f4aeb0Sopenharmony_ci <body> 22002f4aeb0Sopenharmony_ci <div class="refentry"> 22102f4aeb0Sopenharmony_ci <a id="eglQueryString"></a> 22202f4aeb0Sopenharmony_ci <div class="titlepage"></div> 22302f4aeb0Sopenharmony_ci <div xmlns="" class="refnamediv"> 22402f4aeb0Sopenharmony_ci <h1>eglQueryString</h1> 22502f4aeb0Sopenharmony_ci <p> 22602f4aeb0Sopenharmony_ci return a string describing an <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">EGL</acronym> display connection 22702f4aeb0Sopenharmony_ci </p> 22802f4aeb0Sopenharmony_ci </div> 22902f4aeb0Sopenharmony_ci <div class="refsynopsisdiv"> 23002f4aeb0Sopenharmony_ci <h2>C Specification</h2> 23102f4aeb0Sopenharmony_ci <div class="funcsynopsis"> 23202f4aeb0Sopenharmony_ci <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"> 23302f4aeb0Sopenharmony_ci <tr valign="bottom"> 23402f4aeb0Sopenharmony_ci <td> 23502f4aeb0Sopenharmony_ci <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">char const * <strong class="fsfunc">eglQueryString</strong>(</code> 23602f4aeb0Sopenharmony_ci <td>EGLDisplay <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">display</var>, </td> 23702f4aeb0Sopenharmony_ci </td> 23802f4aeb0Sopenharmony_ci </tr> 23902f4aeb0Sopenharmony_ci <tr valign="top"> 24002f4aeb0Sopenharmony_ci <td> </td> 24102f4aeb0Sopenharmony_ci <td>EGLint <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">name</var><code>)</code></td> 24202f4aeb0Sopenharmony_ci </tr> 24302f4aeb0Sopenharmony_ci </table> 24402f4aeb0Sopenharmony_ci </div> 24502f4aeb0Sopenharmony_ci </div> 24602f4aeb0Sopenharmony_ci <div class="refsect1"> 24702f4aeb0Sopenharmony_ci <a id="parameters"></a> 24802f4aeb0Sopenharmony_ci <h2>Parameters</h2> 24902f4aeb0Sopenharmony_ci <div class="variablelist"> 25002f4aeb0Sopenharmony_ci <dl class="variablelist"> 25102f4aeb0Sopenharmony_ci <dt> 25202f4aeb0Sopenharmony_ci <span class="term"> 25302f4aeb0Sopenharmony_ci <em class="parameter"> 25402f4aeb0Sopenharmony_ci <code>display</code> 25502f4aeb0Sopenharmony_ci </em> 25602f4aeb0Sopenharmony_ci </span> 25702f4aeb0Sopenharmony_ci </dt> 25802f4aeb0Sopenharmony_ci <dd> 25902f4aeb0Sopenharmony_ci <p> 26002f4aeb0Sopenharmony_ci Specifies the EGL display connection. 26102f4aeb0Sopenharmony_ci </p> 26202f4aeb0Sopenharmony_ci </dd> 26302f4aeb0Sopenharmony_ci <dt> 26402f4aeb0Sopenharmony_ci <span class="term"> 26502f4aeb0Sopenharmony_ci <em class="parameter"> 26602f4aeb0Sopenharmony_ci <code>name</code> 26702f4aeb0Sopenharmony_ci </em> 26802f4aeb0Sopenharmony_ci </span> 26902f4aeb0Sopenharmony_ci </dt> 27002f4aeb0Sopenharmony_ci <dd> 27102f4aeb0Sopenharmony_ci <p> 27202f4aeb0Sopenharmony_ci Specifies a symbolic constant, one of 27302f4aeb0Sopenharmony_ci <code class="constant">EGL_CLIENT_APIS</code>, 27402f4aeb0Sopenharmony_ci <code class="constant">EGL_VENDOR</code>, 27502f4aeb0Sopenharmony_ci <code class="constant">EGL_VERSION</code>, or 27602f4aeb0Sopenharmony_ci <code class="constant">EGL_EXTENSIONS</code>. 27702f4aeb0Sopenharmony_ci </p> 27802f4aeb0Sopenharmony_ci </dd> 27902f4aeb0Sopenharmony_ci </dl> 28002f4aeb0Sopenharmony_ci </div> 28102f4aeb0Sopenharmony_ci </div> 28202f4aeb0Sopenharmony_ci <div class="refsect1"> 28302f4aeb0Sopenharmony_ci <a id="description"></a> 28402f4aeb0Sopenharmony_ci <h2>Description</h2> 28502f4aeb0Sopenharmony_ci <p> 28602f4aeb0Sopenharmony_ci <code class="function">eglQueryString</code> returns a pointer to a 28702f4aeb0Sopenharmony_ci static string describing an EGL display connection. 28802f4aeb0Sopenharmony_ci <em class="parameter"><code>name</code></em> can be one of the following: 28902f4aeb0Sopenharmony_ci </p> 29002f4aeb0Sopenharmony_ci <div class="variablelist"> 29102f4aeb0Sopenharmony_ci <dl class="variablelist"> 29202f4aeb0Sopenharmony_ci <dt> 29302f4aeb0Sopenharmony_ci <span class="term"> 29402f4aeb0Sopenharmony_ci <code class="constant">EGL_CLIENT_APIS</code> 29502f4aeb0Sopenharmony_ci </span> 29602f4aeb0Sopenharmony_ci </dt> 29702f4aeb0Sopenharmony_ci <dd> 29802f4aeb0Sopenharmony_ci <p> 29902f4aeb0Sopenharmony_ci Returns a string describing which client rendering 30002f4aeb0Sopenharmony_ci APIs are supported. The string contains a 30102f4aeb0Sopenharmony_ci space-separate list of API names. The list must 30202f4aeb0Sopenharmony_ci include at least one of <code class="code">OpenGL</code>, 30302f4aeb0Sopenharmony_ci <code class="code">OpenGL_ES</code>, or <code class="code">OpenVG</code>. 30402f4aeb0Sopenharmony_ci These strings correspond respectively to values 30502f4aeb0Sopenharmony_ci <code class="constant">EGL_OPENGL_API</code>, 30602f4aeb0Sopenharmony_ci <code class="constant">EGL_OPENGL_ES_API</code>, and 30702f4aeb0Sopenharmony_ci <code class="constant">EGL_OPENVG_API</code> of the 30802f4aeb0Sopenharmony_ci <a class="citerefentry" href="eglBindAPI.html"><span class="citerefentry"><span class="refentrytitle">eglBindAPI</span></span></a>, 30902f4aeb0Sopenharmony_ci <em class="parameter"><code>api</code></em> argument. 31002f4aeb0Sopenharmony_ci </p> 31102f4aeb0Sopenharmony_ci </dd> 31202f4aeb0Sopenharmony_ci <dt> 31302f4aeb0Sopenharmony_ci <span class="term"> 31402f4aeb0Sopenharmony_ci <code class="constant">EGL_VENDOR</code> 31502f4aeb0Sopenharmony_ci </span> 31602f4aeb0Sopenharmony_ci </dt> 31702f4aeb0Sopenharmony_ci <dd> 31802f4aeb0Sopenharmony_ci <p> 31902f4aeb0Sopenharmony_ci Returns the company responsible for this EGL implementation. This 32002f4aeb0Sopenharmony_ci name does not change from release to release. 32102f4aeb0Sopenharmony_ci </p> 32202f4aeb0Sopenharmony_ci </dd> 32302f4aeb0Sopenharmony_ci <dt> 32402f4aeb0Sopenharmony_ci <span class="term"> 32502f4aeb0Sopenharmony_ci <code class="constant">EGL_VERSION</code> 32602f4aeb0Sopenharmony_ci </span> 32702f4aeb0Sopenharmony_ci </dt> 32802f4aeb0Sopenharmony_ci <dd> 32902f4aeb0Sopenharmony_ci <p> 33002f4aeb0Sopenharmony_ci Returns a version or release number. 33102f4aeb0Sopenharmony_ci The <code class="constant">EGL_VERSION</code> string is laid out as 33202f4aeb0Sopenharmony_ci follows:</p> 33302f4aeb0Sopenharmony_ci <p> 33402f4aeb0Sopenharmony_ci <em class="replaceable"><code>major_version</code></em>.<em class="replaceable"><code>minor_version</code></em> 33502f4aeb0Sopenharmony_ci space 33602f4aeb0Sopenharmony_ci <em class="replaceable"><code>vendor_specific_info</code></em> 33702f4aeb0Sopenharmony_ci </p> 33802f4aeb0Sopenharmony_ci </dd> 33902f4aeb0Sopenharmony_ci <dt> 34002f4aeb0Sopenharmony_ci <span class="term"> 34102f4aeb0Sopenharmony_ci <code class="constant">EGL_EXTENSIONS</code> 34202f4aeb0Sopenharmony_ci </span> 34302f4aeb0Sopenharmony_ci </dt> 34402f4aeb0Sopenharmony_ci <dd> 34502f4aeb0Sopenharmony_ci <p> 34602f4aeb0Sopenharmony_ci Returns a space separated list of supported extensions to EGL. 34702f4aeb0Sopenharmony_ci </p> 34802f4aeb0Sopenharmony_ci </dd> 34902f4aeb0Sopenharmony_ci </dl> 35002f4aeb0Sopenharmony_ci </div> 35102f4aeb0Sopenharmony_ci </div> 35202f4aeb0Sopenharmony_ci <div class="refsect1"> 35302f4aeb0Sopenharmony_ci <a id="notes"></a> 35402f4aeb0Sopenharmony_ci <h2>Notes</h2> 35502f4aeb0Sopenharmony_ci <p> 35602f4aeb0Sopenharmony_ci <code class="constant">EGL_CLIENT_APIS</code> is supported only if 35702f4aeb0Sopenharmony_ci the EGL version is 1.2 or greater. 35802f4aeb0Sopenharmony_ci </p> 35902f4aeb0Sopenharmony_ci </div> 36002f4aeb0Sopenharmony_ci <div class="refsect1"> 36102f4aeb0Sopenharmony_ci <a id="errors"></a> 36202f4aeb0Sopenharmony_ci <h2>Errors</h2> 36302f4aeb0Sopenharmony_ci <p> 36402f4aeb0Sopenharmony_ci <code class="constant">NULL</code> is returned on failure. 36502f4aeb0Sopenharmony_ci </p> 36602f4aeb0Sopenharmony_ci <p> 36702f4aeb0Sopenharmony_ci <code class="constant">EGL_BAD_DISPLAY</code> is generated if 36802f4aeb0Sopenharmony_ci <em class="parameter"><code>display</code></em> is not an EGL display connection. 36902f4aeb0Sopenharmony_ci </p> 37002f4aeb0Sopenharmony_ci <p> 37102f4aeb0Sopenharmony_ci <code class="constant">EGL_NOT_INITIALIZED</code> is generated if 37202f4aeb0Sopenharmony_ci <em class="parameter"><code>display</code></em> has not been initialized. 37302f4aeb0Sopenharmony_ci </p> 37402f4aeb0Sopenharmony_ci <p> 37502f4aeb0Sopenharmony_ci <code class="constant">EGL_BAD_PARAMETER</code> is generated if 37602f4aeb0Sopenharmony_ci <em class="parameter"><code>name</code></em> is not an accepted value. 37702f4aeb0Sopenharmony_ci </p> 37802f4aeb0Sopenharmony_ci </div> 37902f4aeb0Sopenharmony_ci <div class="refsect1"> 38002f4aeb0Sopenharmony_ci <a id="seealso"></a> 38102f4aeb0Sopenharmony_ci <h2>See Also</h2> 38202f4aeb0Sopenharmony_ci <p> 38302f4aeb0Sopenharmony_ci <a class="citerefentry" href="eglBindAPI.html"><span class="citerefentry"><span class="refentrytitle">eglBindAPI</span></span></a>, 38402f4aeb0Sopenharmony_ci <a class="citerefentry" href="eglGetDisplay.html"><span class="citerefentry"><span class="refentrytitle">eglGetDisplay</span></span></a>, 38502f4aeb0Sopenharmony_ci <a class="citerefentry" href="eglInitialize.html"><span class="citerefentry"><span class="refentrytitle">eglInitialize</span></span></a> 38602f4aeb0Sopenharmony_ci </p> 38702f4aeb0Sopenharmony_ci </div> 38802f4aeb0Sopenharmony_ci <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p> 38902f4aeb0Sopenharmony_ciCopyright © 2003-2014 The Khronos Group Inc. 39002f4aeb0Sopenharmony_ciPermission is hereby granted, free of charge, to any person obtaining a 39102f4aeb0Sopenharmony_cicopy of this software and/or associated documentation files (the 39202f4aeb0Sopenharmony_ci"Materials"), to deal in the Materials without restriction, including 39302f4aeb0Sopenharmony_ciwithout limitation the rights to use, copy, modify, merge, publish, 39402f4aeb0Sopenharmony_cidistribute, sublicense, and/or sell copies of the Materials, and to 39502f4aeb0Sopenharmony_cipermit persons to whom the Materials are furnished to do so, subject to 39602f4aeb0Sopenharmony_cithe condition that this copyright notice and permission notice shall be included 39702f4aeb0Sopenharmony_ciin all copies or substantial portions of the Materials. 39802f4aeb0Sopenharmony_ci</div> 39902f4aeb0Sopenharmony_ci </div> 40002f4aeb0Sopenharmony_ci </body> 40102f4aeb0Sopenharmony_ci</html> 402
