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  const struct  {    int          err_code;    const char*  err_msg;  } ft_errors[] =
  #include &lt;freetype/fterrors.h&gt;</code></pre></div></p><p>An alternative to using an array is a switch statement.<div class="highlight"><pre><span></span><code>  #undef FTERRORS_H_  #define FT_ERROR_START_LIST     switch ( error_code ) {  #define FT_ERRORDEF( e, v, s )    case v: return s;  #define FT_ERROR_END_LIST       }</code></pre></div></p><p>If you use <code>FT_CONFIG_OPTION_USE_MODULE_ERRORS</code>, <code>error_code</code> should be replaced with <code>FT_ERROR_BASE(error_code)</code> in the last example.</p><h2 id="ft_error_string">FT_Error_String<a class="headerlink" href="#ft_error_string" title="Permanent link">&para;</a></h2><p>Defined in FT_ERRORS_H (freetype/fterrors.h).</p><div class = "codehilite"><pre><code>  FT_EXPORT( <span class="keyword">const</span> <span class="keyword">char</span>* )  <b>FT_Error_String</b>( <a href="ft2-basic_types.html#ft_error">FT_Error</a>  error_code );</code></pre></div>
<p>Retrieve the description of a valid FreeType error code.</p><h4>input</h4><table class="fields"><tr><td class="val" id="error_code">error_code</td><td class="desc"><p>A valid FreeType error code.</p></td></tr></table>
<h4>return</h4>
<p>A C&nbsp;string or <code>NULL</code>, if any error occurred.</p><h4>note</h4>
<p>FreeType has to be compiled with <code>FT_CONFIG_OPTION_ERROR_STRINGS</code> or <code>FT_DEBUG_LEVEL_ERROR</code> to get meaningful descriptions. &lsquo;error_string&rsquo; will be <code>NULL</code> otherwise.</p><p>Module identification will be ignored:<div class="highlight"><pre><span></span><code>  <span class="n">strcmp</span><span class="p">(</span> <span class="n">FT_Error_String</span><span class="p">(</span>  <span class="n">FT_Err_Unknown_File_Format</span> <span class="p">),</span>          <span class="n">FT_Error_String</span><span class="p">(</span> <span class="n">BDF_Err_Unknown_File_Format</span> <span class="p">)</span> <span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">;</span></code></pre></div></p><hr>                                                            

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