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<h1>FreeType-2.6 API Reference</h1>

<h1>The TrueType Engine</h1>
<h2>Synopsis</h2>
<table class="synopsis">
<tr><td><a href="#FT_TrueTypeEngineType">FT_TrueTypeEngineType</a></td><td><a href="#FT_Get_TrueType_Engine_Type">FT_Get_TrueType_Engine_Type</a></td></tr>
</table>


<p>This section contains a function used to query the level of TrueType bytecode support compiled in this version of the library.</p>

<div class="section">
<h3 id="FT_TrueTypeEngineType">FT_TrueTypeEngineType</h3>
<p>Defined in FT_MODULE_H (ftmodapi.h).</p>
<pre>
  <span class="keyword">typedef</span> <span class="keyword">enum</span>  FT_TrueTypeEngineType_
  {
    <a href="ft2-truetype_engine.html#FT_TRUETYPE_ENGINE_TYPE_NONE">FT_TRUETYPE_ENGINE_TYPE_NONE</a> = 0,
    <a href="ft2-truetype_engine.html#FT_TRUETYPE_ENGINE_TYPE_UNPATENTED">FT_TRUETYPE_ENGINE_TYPE_UNPATENTED</a>,
    <a href="ft2-truetype_engine.html#FT_TRUETYPE_ENGINE_TYPE_PATENTED">FT_TRUETYPE_ENGINE_TYPE_PATENTED</a>

  } <b>FT_TrueTypeEngineType</b>;
</pre>

<p>A list of values describing which kind of TrueType bytecode engine is implemented in a given FT_Library instance. It is used by the <a href="ft2-truetype_engine.html#FT_Get_TrueType_Engine_Type">FT_Get_TrueType_Engine_Type</a> function.</p>

<h4>values</h4>
<table class="fields">
<tr><td class="val" id="FT_TRUETYPE_ENGINE_TYPE_NONE">FT_TRUETYPE_ENGINE_TYPE_NONE</td><td class="desc">
<p>The library doesn't implement any kind of bytecode interpreter.</p>
</td></tr>
<tr><td class="val" id="FT_TRUETYPE_ENGINE_TYPE_UNPATENTED">FT_TRUETYPE_ENGINE_TYPE_UNPATENTED</td><td class="desc">
<p>The library implements a bytecode interpreter that doesn't support the patented operations of the TrueType virtual machine.</p>
<p>Its main use is to load certain Asian fonts that position and scale glyph components with bytecode instructions. It produces bad output for most other fonts.</p>
</td></tr>
<tr><td class="val" id="FT_TRUETYPE_ENGINE_TYPE_PATENTED">FT_TRUETYPE_ENGINE_TYPE_PATENTED</td><td class="desc">
<p>The library implements a bytecode interpreter that covers the full instruction set of the TrueType virtual machine (this was governed by patents until May 2010, hence the name).</p>
</td></tr>
</table>

<h4>since</h4>
<p>2.2</p>

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<div class="section">
<h3 id="FT_Get_TrueType_Engine_Type">FT_Get_TrueType_Engine_Type</h3>
<p>Defined in FT_MODULE_H (ftmodapi.h).</p>
<pre>
  FT_EXPORT( <a href="ft2-truetype_engine.html#FT_TrueTypeEngineType">FT_TrueTypeEngineType</a> )
  <b>FT_Get_TrueType_Engine_Type</b>( <a href="ft2-base_interface.html#FT_Library">FT_Library</a>  library );
</pre>

<p>Return an <a href="ft2-truetype_engine.html#FT_TrueTypeEngineType">FT_TrueTypeEngineType</a> value to indicate which level of the TrueType virtual machine a given library instance supports.</p>

<h4>input</h4>
<table class="fields">
<tr><td class="val" id="library">library</td><td class="desc">
<p>A library instance.</p>
</td></tr>
</table>

<h4>return</h4>
<p>A value indicating which level is supported.</p>

<h4>since</h4>
<p>2.2</p>

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