<code>NULL</code>.</p>
<div class="fragment"><div class="line"><span class="keyword">const</span> <span class="keywordtype">char</span>* description;</div>
<div class="line"><span class="keywordtype">int</span> code = <a class="code hl_function" href="group__init.html#ga944986b4ec0b928d488141f92982aa18">glfwGetError</a>(&amp;description);</div>
<div class="line"> </div>
<div class="line"><span class="keywordflow">if</span> (description)</div>
<div class="line">    display_error_message(code, description);</