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14<h1>DVDGetUserData</h1>
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16
17<h2>C Specification</h2>
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19<dl>
20  <dd><pre><code>#include &lt;revolution/dvd.h&gt;</code></pre>
21  </dd>
22<dd><pre><CODE>void* DVDGetUserData(DVDCommandBlock* block);</CODE></pre>
23  </dd>
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26<h2>Arguments</h2>
27<TABLE border="1" cellpadding="3" cellspacing="0.1">
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29<TD width="120" bgcolor="#ffffe8"><em><strong><code>block</code></strong></em></TD>
30<TD width="520">Command block.</TD>
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33<h2>Return Values</h2>
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35<P>User data.</P>
36<H2>Description</H2>
37<P>The <code>DVDGetUserData</code> function is a macro that obtains user data from <STRONG><em><code>block</code></em></STRONG>. You must set the user data in advance using the <a href="DVDSetUserData.html"><code>DVDSetUserData</code></a> function. Otherwise, the <code>DVDGetUserData</code> function returns an unknown value.</P>
38<h2>See Also</h2>
39
40<p><a href="DVDSetUserData.html"><code>DVDSetUserData</code></a></p>
41<H2>Revision History</H2>
42<P>03/01/2006 Initial version.</P>
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