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<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table>
<h1>FreeType-2.5.5 API Reference</h1>
<h1>FreeType Version</h1>
<h2>Synopsis</h2>
<table class="synopsis">
<tr><td><a href="#FT_Library_Version">FT_Library_Version</a></td><td> </td></tr>
<tr><td> </td><td><a href="#FT_Face_CheckTrueTypePatents">FT_Face_CheckTrueTypePatents</a></td></tr>
<tr><td><a href="#FREETYPE_MAJOR">FREETYPE_MAJOR</a></td><td><a href="#FT_Face_SetUnpatentedHinting">FT_Face_SetUnpatentedHinting</a></td></tr>
<tr><td><a href="#FREETYPE_MINOR">FREETYPE_MINOR</a></td><td> </td></tr>
<tr><td><a href="#FREETYPE_PATCH">FREETYPE_PATCH</a></td><td><a href="#FREETYPE_XXX">FREETYPE_XXX</a></td></tr>
</table>
<p>Note that those functions and macros are of limited use because even a new release of FreeType with only documentation changes increases the version number.</p>
<div class="section">
<h3 id="FT_Library_Version">FT_Library_Version</h3>
<p>Defined in FT_FREETYPE_H (freetype.h).</p>
<pre>
FT_EXPORT( <span class="keyword">void</span> )
<b>FT_Library_Version</b>( <a href="ft2-base_interface.html#FT_Library">FT_Library</a> library,
<a href="ft2-basic_types.html#FT_Int">FT_Int</a> *amajor,
<a href="ft2-basic_types.html#FT_Int">FT_Int</a> *aminor,
<a href="ft2-basic_types.html#FT_Int">FT_Int</a> *apatch );
</pre>
<p>Return the version of the FreeType library being used. This is useful when dynamically linking to the library, since one cannot use the macros <a href="ft2-version.html#FREETYPE_XXX">FREETYPE_MAJOR</a>, <a href="ft2-version.html#FREETYPE_XXX">FREETYPE_MINOR</a>, and <a href="ft2-version.html#FREETYPE_XXX">FREETYPE_PATCH</a>.</p>
<h4>input</h4>
<table class="fields">
<tr><td class="val" id="library">library</td><td class="desc">
<p>A source library handle.</p>
</td></tr>
</table>
<h4>output</h4>
<table class="fields">
<tr><td class="val" id="amajor">amajor</td><td class="desc">
<p>The major version number.</p>
</td></tr>
<tr><td class="val" id="aminor">aminor</td><td class="desc">
<p>The minor version number.</p>
</td></tr>
<tr><td class="val" id="apatch">apatch</td><td class="desc">
<p>The patch version number.</p>
</td></tr>
</table>
<h4>note</h4>
<p>The reason why this function takes a ‘library’ argument is because certain programs implement library initialization in a custom way that doesn't use <a href="ft2-base_interface.html#FT_Init_FreeType">FT_Init_FreeType</a>.</p>
<p>In such cases, the library version might not be available before the library object has been created.</p>
<hr>
<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div>
<div class="section">
<h3 id="FT_Face_CheckTrueTypePatents">FT_Face_CheckTrueTypePatents</h3>
<p>Defined in FT_FREETYPE_H (freetype.h).</p>
<pre>
FT_EXPORT( <a href="ft2-basic_types.html#FT_Bool">FT_Bool</a> )
<b>FT_Face_CheckTrueTypePatents</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face );
</pre>
<p>Parse all bytecode instructions of a TrueType font file to check whether any of the patented opcodes are used. This is only useful if you want to be able to use the unpatented hinter with fonts that do <b>not</b> use these opcodes.</p>
<p>Note that this function parses <b>all</b> glyph instructions in the font file, which may be slow.</p>
<h4>input</h4>
<table class="fields">
<tr><td class="val" id="face">face</td><td class="desc">
<p>A face handle.</p>
</td></tr>
</table>
<h4>return</h4>
<p>1 if this is a TrueType font that uses one of the patented opcodes, 0 otherwise.</p>
<h4>note</h4>
<p>Since May 2010, TrueType hinting is no longer patented.</p>
<h4>since</h4>
<p>2.3.5</p>
<hr>
<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div>
<div class="section">
<h3 id="FT_Face_SetUnpatentedHinting">FT_Face_SetUnpatentedHinting</h3>
<p>Defined in FT_FREETYPE_H (freetype.h).</p>
<pre>
FT_EXPORT( <a href="ft2-basic_types.html#FT_Bool">FT_Bool</a> )
<b>FT_Face_SetUnpatentedHinting</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
<a href="ft2-basic_types.html#FT_Bool">FT_Bool</a> value );
</pre>
<p>Enable or disable the unpatented hinter for a given face. Only enable it if you have determined that the face doesn't use any patented opcodes (see <a href="ft2-version.html#FT_Face_CheckTrueTypePatents">FT_Face_CheckTrueTypePatents</a>).</p>
<h4>input</h4>
<table class="fields">
<tr><td class="val" id="face">face</td><td class="desc">
<p>A face handle.</p>
</td></tr>
<tr><td class="val" id="value">value</td><td class="desc">
<p>New boolean setting.</p>
</td></tr>
</table>
<h4>return</h4>
<p>The old setting value. This will always be false if this is not an SFNT font, or if the unpatented hinter is not compiled in this instance of the library.</p>
<h4>note</h4>
<p>Since May 2010, TrueType hinting is no longer patented.</p>
<h4>since</h4>
<p>2.3.5</p>
<hr>
<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div>
<div class="section">
<h3 id="FREETYPE_XXX">FREETYPE_XXX</h3>
<p>Defined in FT_FREETYPE_H (freetype.h).</p>
<pre>
#define <a href="ft2-version.html#FREETYPE_MAJOR">FREETYPE_MAJOR</a> 2
#define <a href="ft2-version.html#FREETYPE_MINOR">FREETYPE_MINOR</a> 5
#define <a href="ft2-version.html#FREETYPE_PATCH">FREETYPE_PATCH</a> 5
</pre>
<p>These three macros identify the FreeType source code version. Use <a href="ft2-version.html#FT_Library_Version">FT_Library_Version</a> to access them at runtime.</p>
<h4>values</h4>
<table class="fields">
<tr><td class="val" id="FREETYPE_MAJOR">FREETYPE_MAJOR</td><td class="desc">
<p>The major version number.</p>
</td></tr>
<tr><td class="val" id="FREETYPE_MINOR">FREETYPE_MINOR</td><td class="desc">
<p>The minor version number.</p>
</td></tr>
<tr><td class="val" id="FREETYPE_PATCH">FREETYPE_PATCH</td><td class="desc">
<p>The patch level.</p>
</td></tr>
</table>
<h4>note</h4>
<p>The version number of FreeType if built as a dynamic link library with the ‘libtool’ package is <i>not</i> controlled by these three macros.</p>
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