fter calling the function, <code>output_len</code> is the size of the used data in <code>output</code>.</p>
</td></tr>
</table>

<h4>return</h4>

<p>FreeType error code. 0&nbsp;means success.</p>
<h4>note</h4>

<p>This function may return <code>FT_Err_Unimplemented_Feature</code> if your build of FreeType was not compiled with zlib support.</p>
<h4>since</h4>

<p>2.5.1</p>
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            </article>
          </div>
        </