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<a href="intro.html"><h2>SQLite C Interface</h2></a><h2>Automatically Load Statically Linked Extensions</h2><blockquote><pre>int sqlite3_auto_extension(void (*xEntryPoint)(void));
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</pre></blockquote><p>
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This interface causes the xEntryPoint() function to be invoked for
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each new <a href="../c3ref/sqlite3.html">database connection</a> that is created. The idea here is that
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xEntryPoint() is the entry point for a statically linked SQLite extension
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that is to be automatically loaded into all new database connections.</p>
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<p>Even though the function prototype shows that xEntryPoint() takes
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no arguments and returns void, SQLite invokes xEntryPoint() with three
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arguments and expects and integer result as if the signature of the
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entry point where as follows:</p>
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int xEntryPoint(
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const char **pzErrMsg,
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const struct sqlite3_api_routines *pThunk
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</pre></blockquote></p>
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<p>If the xEntryPoint routine encounters an error, it should make *pzErrMsg
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point to an appropriate error message (obtained from <a href="../c3ref/mprintf.html">sqlite3_mprintf()</a>)
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and return an appropriate <a href="../c3ref/c_abort.html">error code</a>. SQLite ensures that *pzErrMsg
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is NULL before calling the xEntryPoint(). SQLite will invoke
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<a href="../c3ref/free.html">sqlite3_free()</a> on *pzErrMsg after xEntryPoint() returns. If any
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xEntryPoint() returns an error, the <a href="../c3ref/open.html">sqlite3_open()</a>, <a href="../c3ref/open.html">sqlite3_open16()</a>,
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or <a href="../c3ref/open.html">sqlite3_open_v2()</a> call that provoked the xEntryPoint() will fail.</p>
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<p>Calling sqlite3_auto_extension(X) with an entry point X that is already
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on the list of automatic extensions is a harmless no-op. No entry point
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will be called more than once for each database connection that is opened.</p>
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<p>See also: <a href="../c3ref/reset_auto_extension.html">sqlite3_reset_auto_extension()</a>.
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</p><p>See also lists of
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<a href="objlist.html">Objects</a>,
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<a href="constlist.html">Constants</a>, and
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<a href="funclist.html">Functions</a>.</p>