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<!-- keywords: SQLITE_STATIC SQLITE_TRANSIENT -->
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<a href="intro.html"><h2>SQLite C Interface</h2></a>
<h2>Constants Defining Special Destructor Behavior</h2>
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<blockquote><pre>
typedef void (*sqlite3_destructor_type)(void*);
#define SQLITE_STATIC ((sqlite3_destructor_type)0)
#define SQLITE_TRANSIENT ((sqlite3_destructor_type)-1)
</pre></blockquote>
<p>
These are special values for the destructor that is passed in as the
final argument to routines like <a href="../c3ref/result_blob.html">sqlite3_result_blob()</a>. If the destructor
argument is SQLITE_STATIC, it means that the content pointer is constant
and will never change. It does not need to be destroyed. The
SQLITE_TRANSIENT value means that the content will likely change in
the near future and that SQLite should make its own private copy of
the content before returning.</p>
<p>The typedef is necessary to work around problems in certain
C++ compilers.
</p><p>See also lists of
<a href="objlist.html">Objects</a>,
<a href="constlist.html">Constants</a>, and
<a href="funclist.html">Functions</a>.</p>
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