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<!--$Id: env_set_msgfile.so,v 10.7 2006/02/10 22:54:59 bostic Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DB_ENV->set_msgfile</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> </head> <body bgcolor=white> <table width="100%"><tr valign=top> <td> <b>DB_ENV->set_msgfile</b> </td> <td align=right> <a href="../../db4-devel-4.7.25/api_c/api_core.html"><img src="../../db4-devel-4.7.25/images/api.gif" alt="API"></a> <a href="../../db4-devel-4.7.25/ref/toc.html"><img src="../../db4-devel-4.7.25/images/ref.gif" alt="Ref"></a></td> </tr></table> <hr size=1 noshade> <tt> <b><pre> #include <db.h> <p> void DB_ENV->set_msgfile(DB_ENV *dbenv, FILE *msgfile); <p> void DB_ENV->get_msgfile(DB_ENV *dbenv, FILE **msgfilep); </pre></b> <hr size=1 noshade> <b>Description: DB_ENV->set_msgfile</b> <p>There are interfaces in the Berkeley DB library which either directly output informational messages or statistical information, or configure the library to output such messages when performing other operations, for example, <a href="../../db4-devel-4.7.25/api_c/env_set_verbose.html">DB_ENV->set_verbose</a> and <a href="../../db4-devel-4.7.25/api_c/env_stat.html">DB_ENV->stat_print</a>.</p> <p>The DB_ENV->set_msgfile and <a href="../../db4-devel-4.7.25/api_c/db_set_msgfile.html">DB->set_msgfile</a> methods are used to display these messages for the application. In this case the message will include a trailing <newline> character.</p> <p>Setting <b>msgfile</b> to NULL unconfigures the interface.</p> <p>Alternatively, you can use the <a href="../../db4-devel-4.7.25/api_c/env_set_msgcall.html">DB_ENV->set_msgcall</a> or <a href="../../db4-devel-4.7.25/api_c/db_set_msgcall.html">DB->set_msgcall</a> methods to capture the additional error information in a way that does not use C library FILE *'s.</p> <p>The DB_ENV->set_msgfile method configures operations performed using the specified <a href="../../db4-devel-4.7.25/api_c/env_class.html">DB_ENV</a> handle, not all operations performed on the underlying database environment.</p> <p>The DB_ENV->set_msgfile method may be called at any time during the life of the application.</p> <b>Parameters</b> <br> <b>msgfile</b><ul compact><li>The <b>msgfile</b> parameter is a C library FILE * to be used for displaying messages.</ul> <br> <hr size=1 noshade> <b>Description: DB_ENV->get_msgfile</b> <p>The DB_ENV->get_msgfile method returns the FILE *.</p> <p>The DB_ENV->get_msgfile method may be called at any time during the life of the application.</p> <p>The DB_ENV->get_msgfile method returns a non-zero error value on failure and 0 on success. </p> <b>Parameters</b> <br> <b>msgfilep</b><ul compact><li>The DB_ENV->get_msgfile method returns the FILE * in <b>msgfilep</b>.</ul> <br> <hr size=1 noshade> <br><b>Class</b> <a href="../../db4-devel-4.7.25/api_c/env_class.html">DB_ENV</a> <br><b>See Also</b> <a href="../../db4-devel-4.7.25/api_c/env_list.html">Database Environments and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db4-devel-4.7.25/api_c/api_core.html"><img src="../../db4-devel-4.7.25/images/api.gif" alt="API"></a><a href="../../db4-devel-4.7.25/ref/toc.html"><img src="../../db4-devel-4.7.25/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> </body> </html>
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