freetype-2.6/docs/reference/ft2-gx_validation.html - nest-learning-thermostat/5.1.7/freetype - Git at Google

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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-2.6 API Reference</h1>

 <h1>TrueTypeGX/AAT Validation</h1>
 <h2>Synopsis</h2>
 <table class="synopsis">
 <tr><td><a href="#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a></td><td><a href="#FT_ClassicKern_Validate">FT_ClassicKern_Validate</a></td><td><a href="#FT_VALIDATE_GX_LENGTH">FT_VALIDATE_GX_LENGTH</a></td></tr>
 <tr><td><a href="#FT_TrueTypeGX_Free">FT_TrueTypeGX_Free</a></td><td><a href="#FT_ClassicKern_Free">FT_ClassicKern_Free</a></td><td><a href="#FT_VALIDATE_GXXXX">FT_VALIDATE_GXXXX</a></td></tr>
 <tr><td>&nbsp;</td><td>&nbsp;</td><td><a href="#FT_VALIDATE_CKERNXXX">FT_VALIDATE_CKERNXXX</a></td></tr>
 </table>


 <p>This section contains the declaration of functions to validate some TrueTypeGX tables (feat, mort, morx, bsln, just, kern, opbd, trak, prop, lcar).</p>

 <div class="section">
 <h3 id="FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</h3>
 <p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
 <pre>
   FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
   <b>FT_TrueTypeGX_Validate</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>   face,
                           <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a>   validation_flags,
                           <a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a>  tables[<a href="ft2-gx_validation.html#FT_VALIDATE_GX_LENGTH">FT_VALIDATE_GX_LENGTH</a>],
                           <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a>   table_length );
 </pre>

 <p>Validate various TrueTypeGX tables to assure that all offsets and indices are valid. The idea is that a higher-level library that actually does the text layout can access those tables without error checking (which can be quite time consuming).</p>

 <h4>input</h4>
 <table class="fields">
 <tr><td class="val" id="face">face</td><td class="desc">
 <p>A handle to the input face.</p>
 </td></tr>
 <tr><td class="val" id="validation_flags">validation_flags</td><td class="desc">
 <p>A bit field that specifies the tables to be validated. See <a href="ft2-gx_validation.html#FT_VALIDATE_GXXXX">FT_VALIDATE_GXXXX</a> for possible values.</p>
 </td></tr>
 <tr><td class="val" id="table_length">table_length</td><td class="desc">
 <p>The size of the &lsquo;tables&rsquo; array. Normally, <a href="ft2-gx_validation.html#FT_VALIDATE_GX_LENGTH">FT_VALIDATE_GX_LENGTH</a> should be passed.</p>
 </td></tr>
 </table>

 <h4>output</h4>
 <table class="fields">
 <tr><td class="val" id="tables">tables</td><td class="desc">
 <p>The array where all validated sfnt tables are stored. The array itself must be allocated by a client.</p>
 </td></tr>
 </table>

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

 <h4>note</h4>
 <p>This function only works with TrueTypeGX fonts, returning an error otherwise.</p>
 <p>After use, the application should deallocate the buffers pointed to by each &lsquo;tables&rsquo; element, by calling <a href="ft2-gx_validation.html#FT_TrueTypeGX_Free">FT_TrueTypeGX_Free</a>. A NULL value indicates that the table either doesn't exist in the font, the application hasn't asked for validation, or the validator doesn't have the ability to validate the sfnt table.</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_TrueTypeGX_Free">FT_TrueTypeGX_Free</h3>
 <p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
 <pre>
   FT_EXPORT( <span class="keyword">void</span> )
   <b>FT_TrueTypeGX_Free</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>   face,
                       <a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a>  table );
 </pre>

 <p>Free the buffer allocated by TrueTypeGX validator.</p>

 <h4>input</h4>
 <table class="fields">
 <tr><td class="val" id="face">face</td><td class="desc">
 <p>A handle to the input face.</p>
 </td></tr>
 <tr><td class="val" id="table">table</td><td class="desc">
 <p>The pointer to the buffer allocated by <a href="ft2-gx_validation.html#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a>.</p>
 </td></tr>
 </table>

 <h4>note</h4>
 <p>This function must be used to free the buffer allocated by <a href="ft2-gx_validation.html#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a> only.</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_ClassicKern_Validate">FT_ClassicKern_Validate</h3>
 <p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
 <pre>
   FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
   <b>FT_ClassicKern_Validate</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>    face,
                            <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a>    validation_flags,
                            <a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a>  *ckern_table );
 </pre>

 <p>Validate classic (16-bit format) kern table to assure that the offsets and indices are valid. The idea is that a higher-level library that actually does the text layout can access those tables without error checking (which can be quite time consuming).</p>
 <p>The &lsquo;kern&rsquo; table validator in <a href="ft2-gx_validation.html#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a> deals with both the new 32-bit format and the classic 16-bit format, while FT_ClassicKern_Validate only supports the classic 16-bit format.</p>

 <h4>input</h4>
 <table class="fields">
 <tr><td class="val" id="face">face</td><td class="desc">
 <p>A handle to the input face.</p>
 </td></tr>
 <tr><td class="val" id="validation_flags">validation_flags</td><td class="desc">
 <p>A bit field that specifies the dialect to be validated. See <a href="ft2-gx_validation.html#FT_VALIDATE_CKERNXXX">FT_VALIDATE_CKERNXXX</a> for possible values.</p>
 </td></tr>
 </table>

 <h4>output</h4>
 <table class="fields">
 <tr><td class="val" id="ckern_table">ckern_table</td><td class="desc">
 <p>A pointer to the kern table.</p>
 </td></tr>
 </table>

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

 <h4>note</h4>
 <p>After use, the application should deallocate the buffers pointed to by &lsquo;ckern_table&rsquo;, by calling <a href="ft2-gx_validation.html#FT_ClassicKern_Free">FT_ClassicKern_Free</a>. A NULL value indicates that the table doesn't exist in the font.</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_ClassicKern_Free">FT_ClassicKern_Free</h3>
 <p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
 <pre>
   FT_EXPORT( <span class="keyword">void</span> )
   <b>FT_ClassicKern_Free</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>   face,
                        <a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a>  table );
 </pre>

 <p>Free the buffer allocated by classic Kern validator.</p>

 <h4>input</h4>
 <table class="fields">
 <tr><td class="val" id="face">face</td><td class="desc">
 <p>A handle to the input face.</p>
 </td></tr>
 <tr><td class="val" id="table">table</td><td class="desc">
 <p>The pointer to the buffer that is allocated by <a href="ft2-gx_validation.html#FT_ClassicKern_Validate">FT_ClassicKern_Validate</a>.</p>
 </td></tr>
 </table>

 <h4>note</h4>
 <p>This function must be used to free the buffer allocated by <a href="ft2-gx_validation.html#FT_ClassicKern_Validate">FT_ClassicKern_Validate</a> only.</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_VALIDATE_GX_LENGTH">FT_VALIDATE_GX_LENGTH</h3>
 <p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
 <pre>
 #define <b>FT_VALIDATE_GX_LENGTH</b>     (FT_VALIDATE_GX_LAST_INDEX + 1)
 </pre>

 <p>The number of tables checked in this module. Use it as a parameter for the &lsquo;table-length&rsquo; argument of function <a href="ft2-gx_validation.html#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a>.</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_VALIDATE_GXXXX">FT_VALIDATE_GXXXX</h3>
 <p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
 <pre>
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_feat">FT_VALIDATE_feat</a>  FT_VALIDATE_GX_BITFIELD( feat )
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_mort">FT_VALIDATE_mort</a>  FT_VALIDATE_GX_BITFIELD( mort )
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_morx">FT_VALIDATE_morx</a>  FT_VALIDATE_GX_BITFIELD( morx )
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_bsln">FT_VALIDATE_bsln</a>  FT_VALIDATE_GX_BITFIELD( bsln )
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_just">FT_VALIDATE_just</a>  FT_VALIDATE_GX_BITFIELD( just )
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_kern">FT_VALIDATE_kern</a>  FT_VALIDATE_GX_BITFIELD( kern )
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_opbd">FT_VALIDATE_opbd</a>  FT_VALIDATE_GX_BITFIELD( opbd )
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_trak">FT_VALIDATE_trak</a>  FT_VALIDATE_GX_BITFIELD( trak )
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_prop">FT_VALIDATE_prop</a>  FT_VALIDATE_GX_BITFIELD( prop )
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_lcar">FT_VALIDATE_lcar</a>  FT_VALIDATE_GX_BITFIELD( lcar )

 #define <a href="ft2-gx_validation.html#FT_VALIDATE_GX">FT_VALIDATE_GX</a>  ( <a href="ft2-gx_validation.html#FT_VALIDATE_feat">FT_VALIDATE_feat</a> | \
                           <a href="ft2-gx_validation.html#FT_VALIDATE_mort">FT_VALIDATE_mort</a> | \
                           <a href="ft2-gx_validation.html#FT_VALIDATE_morx">FT_VALIDATE_morx</a> | \
                           <a href="ft2-gx_validation.html#FT_VALIDATE_bsln">FT_VALIDATE_bsln</a> | \
                           <a href="ft2-gx_validation.html#FT_VALIDATE_just">FT_VALIDATE_just</a> | \
                           <a href="ft2-gx_validation.html#FT_VALIDATE_kern">FT_VALIDATE_kern</a> | \
                           <a href="ft2-gx_validation.html#FT_VALIDATE_opbd">FT_VALIDATE_opbd</a> | \
                           <a href="ft2-gx_validation.html#FT_VALIDATE_trak">FT_VALIDATE_trak</a> | \
                           <a href="ft2-gx_validation.html#FT_VALIDATE_prop">FT_VALIDATE_prop</a> | \
                           <a href="ft2-gx_validation.html#FT_VALIDATE_lcar">FT_VALIDATE_lcar</a> )
 </pre>

 <p>A list of bit-field constants used with <a href="ft2-gx_validation.html#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a> to indicate which TrueTypeGX/AAT Type tables should be validated.</p>

 <h4>values</h4>
 <table class="fields">
 <tr><td class="val" id="FT_VALIDATE_feat">FT_VALIDATE_feat</td><td class="desc">
 <p>Validate &lsquo;feat&rsquo; table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_mort">FT_VALIDATE_mort</td><td class="desc">
 <p>Validate &lsquo;mort&rsquo; table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_morx">FT_VALIDATE_morx</td><td class="desc">
 <p>Validate &lsquo;morx&rsquo; table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_bsln">FT_VALIDATE_bsln</td><td class="desc">
 <p>Validate &lsquo;bsln&rsquo; table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_just">FT_VALIDATE_just</td><td class="desc">
 <p>Validate &lsquo;just&rsquo; table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_kern">FT_VALIDATE_kern</td><td class="desc">
 <p>Validate &lsquo;kern&rsquo; table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_opbd">FT_VALIDATE_opbd</td><td class="desc">
 <p>Validate &lsquo;opbd&rsquo; table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_trak">FT_VALIDATE_trak</td><td class="desc">
 <p>Validate &lsquo;trak&rsquo; table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_prop">FT_VALIDATE_prop</td><td class="desc">
 <p>Validate &lsquo;prop&rsquo; table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_lcar">FT_VALIDATE_lcar</td><td class="desc">
 <p>Validate &lsquo;lcar&rsquo; table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_GX">FT_VALIDATE_GX</td><td class="desc">
 <p>Validate all TrueTypeGX tables (feat, mort, morx, bsln, just, kern, opbd, trak, prop and lcar).</p>
 </td></tr>
 </table>

 <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_VALIDATE_CKERNXXX">FT_VALIDATE_CKERNXXX</h3>
 <p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
 <pre>
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_MS">FT_VALIDATE_MS</a>     ( FT_VALIDATE_GX_START &lt;&lt; 0 )
 #define <a href="ft2-gx_validation.html#FT_VALIDATE_APPLE">FT_VALIDATE_APPLE</a>  ( FT_VALIDATE_GX_START &lt;&lt; 1 )

 #define <a href="ft2-gx_validation.html#FT_VALIDATE_CKERN">FT_VALIDATE_CKERN</a>  ( <a href="ft2-gx_validation.html#FT_VALIDATE_MS">FT_VALIDATE_MS</a> | <a href="ft2-gx_validation.html#FT_VALIDATE_APPLE">FT_VALIDATE_APPLE</a> )
 </pre>

 <p>A list of bit-field constants used with <a href="ft2-gx_validation.html#FT_ClassicKern_Validate">FT_ClassicKern_Validate</a> to indicate the classic kern dialect or dialects. If the selected type doesn't fit, <a href="ft2-gx_validation.html#FT_ClassicKern_Validate">FT_ClassicKern_Validate</a> regards the table as invalid.</p>

 <h4>values</h4>
 <table class="fields">
 <tr><td class="val" id="FT_VALIDATE_MS">FT_VALIDATE_MS</td><td class="desc">
 <p>Handle the &lsquo;kern&rsquo; table as a classic Microsoft kern table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_APPLE">FT_VALIDATE_APPLE</td><td class="desc">
 <p>Handle the &lsquo;kern&rsquo; table as a classic Apple kern table.</p>
 </td></tr>
 <tr><td class="val" id="FT_VALIDATE_CKERN">FT_VALIDATE_CKERN</td><td class="desc">
 <p>Handle the &lsquo;kern&rsquo; as either classic Apple or Microsoft kern table.</p>
 </td></tr>
 </table>

 <hr>
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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-2.6 API Reference</h1>

	<h1>TrueTypeGX/AAT Validation</h1>
	<h2>Synopsis</h2>
	<table class="synopsis">
	<tr><td><a href="#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a></td><td><a href="#FT_ClassicKern_Validate">FT_ClassicKern_Validate</a></td><td><a href="#FT_VALIDATE_GX_LENGTH">FT_VALIDATE_GX_LENGTH</a></td></tr>
	<tr><td><a href="#FT_TrueTypeGX_Free">FT_TrueTypeGX_Free</a></td><td><a href="#FT_ClassicKern_Free">FT_ClassicKern_Free</a></td><td><a href="#FT_VALIDATE_GXXXX">FT_VALIDATE_GXXXX</a></td></tr>
	<tr><td> </td><td> </td><td><a href="#FT_VALIDATE_CKERNXXX">FT_VALIDATE_CKERNXXX</a></td></tr>
	</table>


	<p>This section contains the declaration of functions to validate some TrueTypeGX tables (feat, mort, morx, bsln, just, kern, opbd, trak, prop, lcar).</p>

	<div class="section">
	<h3 id="FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</h3>
	<p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
	<pre>
	FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
	<b>FT_TrueTypeGX_Validate</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
	<a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> validation_flags,
	<a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a> tables[<a href="ft2-gx_validation.html#FT_VALIDATE_GX_LENGTH">FT_VALIDATE_GX_LENGTH</a>],
	<a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> table_length );
	</pre>

	<p>Validate various TrueTypeGX tables to assure that all offsets and indices are valid. The idea is that a higher-level library that actually does the text layout can access those tables without error checking (which can be quite time consuming).</p>

	<h4>input</h4>
	<table class="fields">
	<tr><td class="val" id="face">face</td><td class="desc">
	<p>A handle to the input face.</p>
	</td></tr>
	<tr><td class="val" id="validation_flags">validation_flags</td><td class="desc">
	<p>A bit field that specifies the tables to be validated. See <a href="ft2-gx_validation.html#FT_VALIDATE_GXXXX">FT_VALIDATE_GXXXX</a> for possible values.</p>
	</td></tr>
	<tr><td class="val" id="table_length">table_length</td><td class="desc">
	<p>The size of the ‘tables’ array. Normally, <a href="ft2-gx_validation.html#FT_VALIDATE_GX_LENGTH">FT_VALIDATE_GX_LENGTH</a> should be passed.</p>
	</td></tr>
	</table>

	<h4>output</h4>
	<table class="fields">
	<tr><td class="val" id="tables">tables</td><td class="desc">
	<p>The array where all validated sfnt tables are stored. The array itself must be allocated by a client.</p>
	</td></tr>
	</table>

	<h4>return</h4>
	<p>FreeType error code. 0 means success.</p>

	<h4>note</h4>
	<p>This function only works with TrueTypeGX fonts, returning an error otherwise.</p>
	<p>After use, the application should deallocate the buffers pointed to by each ‘tables’ element, by calling <a href="ft2-gx_validation.html#FT_TrueTypeGX_Free">FT_TrueTypeGX_Free</a>. A NULL value indicates that the table either doesn't exist in the font, the application hasn't asked for validation, or the validator doesn't have the ability to validate the sfnt table.</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_TrueTypeGX_Free">FT_TrueTypeGX_Free</h3>
	<p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
	<pre>
	FT_EXPORT( <span class="keyword">void</span> )
	<b>FT_TrueTypeGX_Free</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
	<a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a> table );
	</pre>

	<p>Free the buffer allocated by TrueTypeGX validator.</p>

	<h4>input</h4>
	<table class="fields">
	<tr><td class="val" id="face">face</td><td class="desc">
	<p>A handle to the input face.</p>
	</td></tr>
	<tr><td class="val" id="table">table</td><td class="desc">
	<p>The pointer to the buffer allocated by <a href="ft2-gx_validation.html#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a>.</p>
	</td></tr>
	</table>

	<h4>note</h4>
	<p>This function must be used to free the buffer allocated by <a href="ft2-gx_validation.html#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a> only.</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_ClassicKern_Validate">FT_ClassicKern_Validate</h3>
	<p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
	<pre>
	FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
	<b>FT_ClassicKern_Validate</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
	<a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> validation_flags,
	<a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a> *ckern_table );
	</pre>

	<p>Validate classic (16-bit format) kern table to assure that the offsets and indices are valid. The idea is that a higher-level library that actually does the text layout can access those tables without error checking (which can be quite time consuming).</p>
	<p>The ‘kern’ table validator in <a href="ft2-gx_validation.html#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a> deals with both the new 32-bit format and the classic 16-bit format, while FT_ClassicKern_Validate only supports the classic 16-bit format.</p>

	<h4>input</h4>
	<table class="fields">
	<tr><td class="val" id="face">face</td><td class="desc">
	<p>A handle to the input face.</p>
	</td></tr>
	<tr><td class="val" id="validation_flags">validation_flags</td><td class="desc">
	<p>A bit field that specifies the dialect to be validated. See <a href="ft2-gx_validation.html#FT_VALIDATE_CKERNXXX">FT_VALIDATE_CKERNXXX</a> for possible values.</p>
	</td></tr>
	</table>

	<h4>output</h4>
	<table class="fields">
	<tr><td class="val" id="ckern_table">ckern_table</td><td class="desc">
	<p>A pointer to the kern table.</p>
	</td></tr>
	</table>

	<h4>return</h4>
	<p>FreeType error code. 0 means success.</p>

	<h4>note</h4>
	<p>After use, the application should deallocate the buffers pointed to by ‘ckern_table’, by calling <a href="ft2-gx_validation.html#FT_ClassicKern_Free">FT_ClassicKern_Free</a>. A NULL value indicates that the table doesn't exist in the font.</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_ClassicKern_Free">FT_ClassicKern_Free</h3>
	<p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
	<pre>
	FT_EXPORT( <span class="keyword">void</span> )
	<b>FT_ClassicKern_Free</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
	<a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a> table );
	</pre>

	<p>Free the buffer allocated by classic Kern validator.</p>

	<h4>input</h4>
	<table class="fields">
	<tr><td class="val" id="face">face</td><td class="desc">
	<p>A handle to the input face.</p>
	</td></tr>
	<tr><td class="val" id="table">table</td><td class="desc">
	<p>The pointer to the buffer that is allocated by <a href="ft2-gx_validation.html#FT_ClassicKern_Validate">FT_ClassicKern_Validate</a>.</p>
	</td></tr>
	</table>

	<h4>note</h4>
	<p>This function must be used to free the buffer allocated by <a href="ft2-gx_validation.html#FT_ClassicKern_Validate">FT_ClassicKern_Validate</a> only.</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_VALIDATE_GX_LENGTH">FT_VALIDATE_GX_LENGTH</h3>
	<p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
	<pre>
	#define <b>FT_VALIDATE_GX_LENGTH</b> (FT_VALIDATE_GX_LAST_INDEX + 1)
	</pre>

	<p>The number of tables checked in this module. Use it as a parameter for the ‘table-length’ argument of function <a href="ft2-gx_validation.html#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a>.</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_VALIDATE_GXXXX">FT_VALIDATE_GXXXX</h3>
	<p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
	<pre>
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_feat">FT_VALIDATE_feat</a> FT_VALIDATE_GX_BITFIELD( feat )
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_mort">FT_VALIDATE_mort</a> FT_VALIDATE_GX_BITFIELD( mort )
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_morx">FT_VALIDATE_morx</a> FT_VALIDATE_GX_BITFIELD( morx )
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_bsln">FT_VALIDATE_bsln</a> FT_VALIDATE_GX_BITFIELD( bsln )
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_just">FT_VALIDATE_just</a> FT_VALIDATE_GX_BITFIELD( just )
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_kern">FT_VALIDATE_kern</a> FT_VALIDATE_GX_BITFIELD( kern )
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_opbd">FT_VALIDATE_opbd</a> FT_VALIDATE_GX_BITFIELD( opbd )
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_trak">FT_VALIDATE_trak</a> FT_VALIDATE_GX_BITFIELD( trak )
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_prop">FT_VALIDATE_prop</a> FT_VALIDATE_GX_BITFIELD( prop )
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_lcar">FT_VALIDATE_lcar</a> FT_VALIDATE_GX_BITFIELD( lcar )

	#define <a href="ft2-gx_validation.html#FT_VALIDATE_GX">FT_VALIDATE_GX</a> ( <a href="ft2-gx_validation.html#FT_VALIDATE_feat">FT_VALIDATE_feat</a> \| \
	<a href="ft2-gx_validation.html#FT_VALIDATE_mort">FT_VALIDATE_mort</a> \| \
	<a href="ft2-gx_validation.html#FT_VALIDATE_morx">FT_VALIDATE_morx</a> \| \
	<a href="ft2-gx_validation.html#FT_VALIDATE_bsln">FT_VALIDATE_bsln</a> \| \
	<a href="ft2-gx_validation.html#FT_VALIDATE_just">FT_VALIDATE_just</a> \| \
	<a href="ft2-gx_validation.html#FT_VALIDATE_kern">FT_VALIDATE_kern</a> \| \
	<a href="ft2-gx_validation.html#FT_VALIDATE_opbd">FT_VALIDATE_opbd</a> \| \
	<a href="ft2-gx_validation.html#FT_VALIDATE_trak">FT_VALIDATE_trak</a> \| \
	<a href="ft2-gx_validation.html#FT_VALIDATE_prop">FT_VALIDATE_prop</a> \| \
	<a href="ft2-gx_validation.html#FT_VALIDATE_lcar">FT_VALIDATE_lcar</a> )
	</pre>

	<p>A list of bit-field constants used with <a href="ft2-gx_validation.html#FT_TrueTypeGX_Validate">FT_TrueTypeGX_Validate</a> to indicate which TrueTypeGX/AAT Type tables should be validated.</p>

	<h4>values</h4>
	<table class="fields">
	<tr><td class="val" id="FT_VALIDATE_feat">FT_VALIDATE_feat</td><td class="desc">
	<p>Validate ‘feat’ table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_mort">FT_VALIDATE_mort</td><td class="desc">
	<p>Validate ‘mort’ table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_morx">FT_VALIDATE_morx</td><td class="desc">
	<p>Validate ‘morx’ table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_bsln">FT_VALIDATE_bsln</td><td class="desc">
	<p>Validate ‘bsln’ table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_just">FT_VALIDATE_just</td><td class="desc">
	<p>Validate ‘just’ table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_kern">FT_VALIDATE_kern</td><td class="desc">
	<p>Validate ‘kern’ table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_opbd">FT_VALIDATE_opbd</td><td class="desc">
	<p>Validate ‘opbd’ table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_trak">FT_VALIDATE_trak</td><td class="desc">
	<p>Validate ‘trak’ table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_prop">FT_VALIDATE_prop</td><td class="desc">
	<p>Validate ‘prop’ table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_lcar">FT_VALIDATE_lcar</td><td class="desc">
	<p>Validate ‘lcar’ table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_GX">FT_VALIDATE_GX</td><td class="desc">
	<p>Validate all TrueTypeGX tables (feat, mort, morx, bsln, just, kern, opbd, trak, prop and lcar).</p>
	</td></tr>
	</table>

	<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_VALIDATE_CKERNXXX">FT_VALIDATE_CKERNXXX</h3>
	<p>Defined in FT_GX_VALIDATE_H (ftgxval.h).</p>
	<pre>
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_MS">FT_VALIDATE_MS</a> ( FT_VALIDATE_GX_START << 0 )
	#define <a href="ft2-gx_validation.html#FT_VALIDATE_APPLE">FT_VALIDATE_APPLE</a> ( FT_VALIDATE_GX_START << 1 )

	#define <a href="ft2-gx_validation.html#FT_VALIDATE_CKERN">FT_VALIDATE_CKERN</a> ( <a href="ft2-gx_validation.html#FT_VALIDATE_MS">FT_VALIDATE_MS</a> \| <a href="ft2-gx_validation.html#FT_VALIDATE_APPLE">FT_VALIDATE_APPLE</a> )
	</pre>

	<p>A list of bit-field constants used with <a href="ft2-gx_validation.html#FT_ClassicKern_Validate">FT_ClassicKern_Validate</a> to indicate the classic kern dialect or dialects. If the selected type doesn't fit, <a href="ft2-gx_validation.html#FT_ClassicKern_Validate">FT_ClassicKern_Validate</a> regards the table as invalid.</p>

	<h4>values</h4>
	<table class="fields">
	<tr><td class="val" id="FT_VALIDATE_MS">FT_VALIDATE_MS</td><td class="desc">
	<p>Handle the ‘kern’ table as a classic Microsoft kern table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_APPLE">FT_VALIDATE_APPLE</td><td class="desc">
	<p>Handle the ‘kern’ table as a classic Apple kern table.</p>
	</td></tr>
	<tr><td class="val" id="FT_VALIDATE_CKERN">FT_VALIDATE_CKERN</td><td class="desc">
	<p>Handle the ‘kern’ as either classic Apple or Microsoft kern table.</p>
	</td></tr>
	</table>

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