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7<title>TryGetFront</title>
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10<h1><CODE><a href="../../../nn/Overview.html">nn</a>::<a href="../../../nn/os/Overview.html">os</a>::<a href="../../../nn/os/BlockingQueue/Overview.html">BlockingQueue</a>::TryGetFront</CODE> Member Function</h1>
11<h2>Syntax</h2>
12    <div class="section">
13      <pre class="definition">#include &lt;nn/os.h&gt;
14
15bool TryGetFront(
16     <a href="../../../nn_types/uptr.html">uptr</a> * pOut
17) const;
18</pre>
19    </div>
20<h2>Parameters</h2>
21    <div class="section">
22      <table class="arguments">
23        <thead>
24          <tr>
25            <td width="15" />
26<th>Name</th>
27<td>Description</td>
28          </tr>
29        </thead>
30        <tr>
31<td>out</td>
32<th>pOut</th>
33<td>Location at which to store the retrieved value</td>
34        </tr> </table>
35    </div>
36<h2>Return Values</h2>
37<div class="section">Returns <CODE>true</CODE> if the element could be obtained, and <CODE>false</CODE> otherwise. </div>
38<h2>Description</h2>
39    <div class="section">
40<p>Gets the element at the front of the queue.</p><p>If the queue is empty, does nothing and returns <CODE>false</CODE>. If the queue is not empty, this function writes the first element in the queue to <SPAN class="argument">*pOut</SPAN> and returns <CODE>true</CODE>. The state of the queue does not change.</p><!-- write here --></div>
41<h2>Revision History</h2>
42    <div class="section">
43      <dl class="history">
44        <dt>2010/01/07</dt>
45<dd>Initial version.<br />
46        </dd>
47      </dl>
48    </div>
49  <hr><p>CONFIDENTIAL</p></body>
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51