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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>hb-blob: HarfBuzz Manual</title> <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> <link rel="home" href="index.html" title="HarfBuzz Manual"> <link rel="up" href="ch08.html" title="Harfbuzz API"> <link rel="prev" href="harfbuzz-Buffers.html" title="Buffers"> <link rel="next" href="harfbuzz-hb-face.html" title="hb-face"> <meta name="generator" content="GTK-Doc V1.27.1 (XML mode)"> <link rel="stylesheet" href="style.css" type="text/css"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> <td width="100%" align="left" class="shortcuts"> <a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> <a href="#harfbuzz-hb-blob.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> <a href="#harfbuzz-hb-blob.object-hierarchy" class="shortcut">Object Hierarchy</a></span> </td> <td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> <td><a accesskey="u" href="ch08.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> <td><a accesskey="p" href="harfbuzz-Buffers.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> <td><a accesskey="n" href="harfbuzz-hb-face.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> </tr></table> <div class="refentry"> <a name="harfbuzz-hb-blob"></a><div class="titlepage"></div> <div class="refnamediv"><table width="100%"><tr> <td valign="top"> <h2><span class="refentrytitle"><a name="harfbuzz-hb-blob.top_of_page"></a>hb-blob</span></h2> <p>hb-blob</p> </td> <td class="gallery_image" valign="top" align="right"></td> </tr></table></div> <div class="refsect1"> <a name="harfbuzz-hb-blob.functions"></a><h2>Functions</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="functions_return"> <col class="functions_name"> </colgroup> <tbody> <tr> <td class="function_type"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="returnvalue">hb_blob_t</span></a> * </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-create" title="hb_blob_create ()">hb_blob_create</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="returnvalue">hb_blob_t</span></a> * </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-create-sub-blob" title="hb_blob_create_sub_blob ()">hb_blob_create_sub_blob</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <span class="returnvalue">void</span> </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-destroy" title="hb_blob_destroy ()">hb_blob_destroy</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type">const <span class="returnvalue">char</span> * </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-get-data" title="hb_blob_get_data ()">hb_blob_get_data</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <span class="returnvalue">char</span> * </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-get-data-writable" title="hb_blob_get_data_writable ()">hb_blob_get_data_writable</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="returnvalue">hb_blob_t</span></a> * </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-get-empty" title="hb_blob_get_empty ()">hb_blob_get_empty</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type">unsigned <span class="returnvalue">int</span> </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-get-length" title="hb_blob_get_length ()">hb_blob_get_length</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <span class="returnvalue">void</span> * </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-get-user-data" title="hb_blob_get_user_data ()">hb_blob_get_user_data</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a> </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-is-immutable" title="hb_blob_is_immutable ()">hb_blob_is_immutable</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <span class="returnvalue">void</span> </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-make-immutable" title="hb_blob_make_immutable ()">hb_blob_make_immutable</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="returnvalue">hb_blob_t</span></a> * </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-reference" title="hb_blob_reference ()">hb_blob_reference</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a> </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-set-user-data" title="hb_blob_set_user_data ()">hb_blob_set_user_data</a> <span class="c_punctuation">()</span> </td> </tr> </tbody> </table></div> </div> <a name="hb-blob-t"></a><div class="refsect1"> <a name="harfbuzz-hb-blob.other"></a><h2>Types and Values</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="name"> <col class="description"> </colgroup> <tbody> <tr> <td class="typedef_keyword">typedef</td> <td class="function_name"><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t">hb_blob_t</a></td> </tr> <tr> <td class="datatype_keyword">enum</td> <td class="function_name"><a class="link" href="harfbuzz-hb-blob.html#hb-memory-mode-t" title="enum hb_memory_mode_t">hb_memory_mode_t</a></td> </tr> </tbody> </table></div> </div> <div class="refsect1"> <a name="harfbuzz-hb-blob.object-hierarchy"></a><h2>Object Hierarchy</h2> <pre class="screen"> <a href="/home/behdad/.local/share/gtk-doc/html/gobject/gobject-Boxed-Types.html">GBoxed</a> <span class="lineart">╰──</span> hb_blob_t <a href="/home/behdad/.local/share/gtk-doc/html/gobject/gobject-Enumeration-and-Flag-Types.html">GEnum</a> <span class="lineart">╰──</span> hb_memory_mode_t </pre> </div> <div class="refsect1"> <a name="harfbuzz-hb-blob.description"></a><h2>Description</h2> </div> <div class="refsect1"> <a name="harfbuzz-hb-blob.functions_details"></a><h2>Functions</h2> <div class="refsect2"> <a name="hb-blob-create"></a><h3>hb_blob_create ()</h3> <pre class="programlisting"><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="returnvalue">hb_blob_t</span></a> * hb_blob_create (<em class="parameter"><code>const <span class="type">char</span> *data</code></em>, <em class="parameter"><code>unsigned <span class="type">int</span> length</code></em>, <em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-memory-mode-t" title="enum hb_memory_mode_t"><span class="type">hb_memory_mode_t</span></a> mode</code></em>, <em class="parameter"><code><span class="type">void</span> *user_data</code></em>, <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre> <p>Creates a new "blob" object wrapping <em class="parameter"><code>data</code></em> . The <em class="parameter"><code>mode</code></em> parameter is used to negotiate ownership and lifecycle of <em class="parameter"><code>data</code></em> .</p> <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p> <div class="refsect3"> <a name="hb-blob-create.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>data</p></td> <td class="parameter_description"><p>Pointer to blob data.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>length</p></td> <td class="parameter_description"><p>Length of <em class="parameter"><code>data</code></em> in bytes.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>mode</p></td> <td class="parameter_description"><p>Memory mode for <em class="parameter"><code>data</code></em> .</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>user_data</p></td> <td class="parameter_description"><p>Data parameter to pass to <em class="parameter"><code>destroy</code></em> .</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>destroy</p></td> <td class="parameter_description"><p>Callback to call when <em class="parameter"><code>data</code></em> is not needed anymore.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="hb-blob-create.returns"></a><h4>Returns</h4> <p> New blob, or the empty blob if something failed or if <em class="parameter"><code>length</code></em> is zero. Destroy with <a class="link" href="harfbuzz-hb-blob.html#hb-blob-destroy" title="hb_blob_destroy ()"><code class="function">hb_blob_destroy()</code></a>.</p> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-create-sub-blob"></a><h3>hb_blob_create_sub_blob ()</h3> <pre class="programlisting"><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="returnvalue">hb_blob_t</span></a> * hb_blob_create_sub_blob (<em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="type">hb_blob_t</span></a> *parent</code></em>, <em class="parameter"><code>unsigned <span class="type">int</span> offset</code></em>, <em class="parameter"><code>unsigned <span class="type">int</span> length</code></em>);</pre> <p>Returns a blob that represents a range of bytes in <em class="parameter"><code>parent</code></em> . The new blob is always created with <a class="link" href="harfbuzz-hb-blob.html#HB-MEMORY-MODE-READONLY:CAPS"><code class="literal">HB_MEMORY_MODE_READONLY</code></a>, meaning that it will never modify data in the parent blob. The parent data is not expected to be modified, and will result in undefined behavior if it is.</p> <p>Makes <em class="parameter"><code>parent</code></em> immutable.</p> <div class="refsect3"> <a name="hb-blob-create-sub-blob.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>parent</p></td> <td class="parameter_description"><p>Parent blob.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>offset</p></td> <td class="parameter_description"><p>Start offset of sub-blob within <em class="parameter"><code>parent</code></em> , in bytes.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>length</p></td> <td class="parameter_description"><p>Length of sub-blob.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="hb-blob-create-sub-blob.returns"></a><h4>Returns</h4> <p> New blob, or the empty blob if something failed or if <em class="parameter"><code>length</code></em> is zero or <em class="parameter"><code>offset</code></em> is beyond the end of <em class="parameter"><code>parent</code></em> 's data. Destroy with <a class="link" href="harfbuzz-hb-blob.html#hb-blob-destroy" title="hb_blob_destroy ()"><code class="function">hb_blob_destroy()</code></a>.</p> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-destroy"></a><h3>hb_blob_destroy ()</h3> <pre class="programlisting"><span class="returnvalue">void</span> hb_blob_destroy (<em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="type">hb_blob_t</span></a> *blob</code></em>);</pre> <p>Descreases the reference count on <em class="parameter"><code>blob</code></em> , and if it reaches zero, destroys <em class="parameter"><code>blob</code></em> , freeing all memory, possibly calling the destroy-callback the blob was created for if it has not been called already.</p> <p>See TODO:link object types for more information.</p> <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p> <div class="refsect3"> <a name="hb-blob-destroy.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody><tr> <td class="parameter_name"><p>blob</p></td> <td class="parameter_description"><p>a blob.</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-get-data"></a><h3>hb_blob_get_data ()</h3> <pre class="programlisting">const <span class="returnvalue">char</span> * hb_blob_get_data (<em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="type">hb_blob_t</span></a> *blob</code></em>, <em class="parameter"><code>unsigned <span class="type">int</span> *length</code></em>);</pre> <div class="refsect3"> <a name="hb-blob-get-data.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>blob</p></td> <td class="parameter_description"><p>a blob.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>length</p></td> <td class="parameter_description"><p>. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="hb-blob-get-data.returns"></a><h4>Returns</h4> <p>. </p> <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=length]</span></p> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-get-data-writable"></a><h3>hb_blob_get_data_writable ()</h3> <pre class="programlisting"><span class="returnvalue">char</span> * hb_blob_get_data_writable (<em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="type">hb_blob_t</span></a> *blob</code></em>, <em class="parameter"><code>unsigned <span class="type">int</span> *length</code></em>);</pre> <p>Tries to make blob data writable (possibly copying it) and return pointer to data.</p> <p>Fails if blob has been made immutable, or if memory allocation fails.</p> <div class="refsect3"> <a name="hb-blob-get-data-writable.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>blob</p></td> <td class="parameter_description"><p>a blob.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>length</p></td> <td class="parameter_description"><p>output length of the writable data. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="hb-blob-get-data-writable.returns"></a><h4>Returns</h4> <p>Writable blob data, or <code class="literal">NULL</code> if failed. </p> <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=length]</span></p> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-get-empty"></a><h3>hb_blob_get_empty ()</h3> <pre class="programlisting"><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="returnvalue">hb_blob_t</span></a> * hb_blob_get_empty (<em class="parameter"><code><span class="type">void</span></code></em>);</pre> <p>Returns the singleton empty blob.</p> <p>See TODO:link object types for more information.</p> <div class="refsect3"> <a name="hb-blob-get-empty.returns"></a><h4>Returns</h4> <p>the empty blob. </p> <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-get-length"></a><h3>hb_blob_get_length ()</h3> <pre class="programlisting">unsigned <span class="returnvalue">int</span> hb_blob_get_length (<em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="type">hb_blob_t</span></a> *blob</code></em>);</pre> <div class="refsect3"> <a name="hb-blob-get-length.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody><tr> <td class="parameter_name"><p>blob</p></td> <td class="parameter_description"><p>a blob.</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="hb-blob-get-length.returns"></a><h4>Returns</h4> <p> the length of blob data in bytes.</p> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-get-user-data"></a><h3>hb_blob_get_user_data ()</h3> <pre class="programlisting"><span class="returnvalue">void</span> * hb_blob_get_user_data (<em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="type">hb_blob_t</span></a> *blob</code></em>, <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-user-data-key-t"><span class="type">hb_user_data_key_t</span></a> *key</code></em>);</pre> <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p> <div class="refsect3"> <a name="hb-blob-get-user-data.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>blob</p></td> <td class="parameter_description"><p>a blob.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>key</p></td> <td class="parameter_description"><p>key for data to get.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="hb-blob-get-user-data.returns"></a><h4>Returns</h4> <p>. </p> <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-is-immutable"></a><h3>hb_blob_is_immutable ()</h3> <pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a> hb_blob_is_immutable (<em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="type">hb_blob_t</span></a> *blob</code></em>);</pre> <div class="refsect3"> <a name="hb-blob-is-immutable.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody><tr> <td class="parameter_name"><p>blob</p></td> <td class="parameter_description"><p>a blob.</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="hb-blob-is-immutable.returns"></a><h4>Returns</h4> <p> TODO</p> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-make-immutable"></a><h3>hb_blob_make_immutable ()</h3> <pre class="programlisting"><span class="returnvalue">void</span> hb_blob_make_immutable (<em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="type">hb_blob_t</span></a> *blob</code></em>);</pre> <div class="refsect3"> <a name="hb-blob-make-immutable.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody><tr> <td class="parameter_name"><p>blob</p></td> <td class="parameter_description"><p>a blob.</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-reference"></a><h3>hb_blob_reference ()</h3> <pre class="programlisting"><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="returnvalue">hb_blob_t</span></a> * hb_blob_reference (<em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="type">hb_blob_t</span></a> *blob</code></em>);</pre> <p>Increases the reference count on <em class="parameter"><code>blob</code></em> .</p> <p>See TODO:link object types for more information.</p> <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p> <div class="refsect3"> <a name="hb-blob-reference.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody><tr> <td class="parameter_name"><p>blob</p></td> <td class="parameter_description"><p>a blob.</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="hb-blob-reference.returns"></a><h4>Returns</h4> <p> <em class="parameter"><code>blob</code></em> .</p> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> <hr> <div class="refsect2"> <a name="hb-blob-set-user-data"></a><h3>hb_blob_set_user_data ()</h3> <pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a> hb_blob_set_user_data (<em class="parameter"><code><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t"><span class="type">hb_blob_t</span></a> *blob</code></em>, <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-user-data-key-t"><span class="type">hb_user_data_key_t</span></a> *key</code></em>, <em class="parameter"><code><span class="type">void</span> *data</code></em>, <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>, <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="type">hb_bool_t</span></a> replace</code></em>);</pre> <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p> <div class="refsect3"> <a name="hb-blob-set-user-data.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>blob</p></td> <td class="parameter_description"><p>a blob.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>key</p></td> <td class="parameter_description"><p>key for data to set.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>data</p></td> <td class="parameter_description"><p>data to set.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>destroy</p></td> <td class="parameter_description"><p>callback to call when <em class="parameter"><code>data</code></em> is not needed anymore.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>replace</p></td> <td class="parameter_description"><p>whether to replace an existing data with the same key.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p> </div> </div> <div class="refsect1"> <a name="harfbuzz-hb-blob.other_details"></a><h2>Types and Values</h2> <div class="refsect2"> <a name="hb-blob-t"></a><h3>hb_blob_t</h3> <pre class="programlisting">typedef struct hb_blob_t hb_blob_t; </pre> </div> <hr> <div class="refsect2"> <a name="hb-memory-mode-t"></a><h3>enum hb_memory_mode_t</h3> <div class="refsect3"> <a name="hb-memory-mode-t.members"></a><h4>Members</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="300px" class="enum_members_name"> <col class="enum_members_description"> <col width="200px" class="enum_members_annotations"> </colgroup> <tbody> <tr> <td class="enum_member_name"><p><a name="HB-MEMORY-MODE-DUPLICATE:CAPS"></a>HB_MEMORY_MODE_DUPLICATE</p></td> <td> </td> <td> </td> </tr> <tr> <td class="enum_member_name"><p><a name="HB-MEMORY-MODE-READONLY:CAPS"></a>HB_MEMORY_MODE_READONLY</p></td> <td> </td> <td> </td> </tr> <tr> <td class="enum_member_name"><p><a name="HB-MEMORY-MODE-WRITABLE:CAPS"></a>HB_MEMORY_MODE_WRITABLE</p></td> <td> </td> <td> </td> </tr> <tr> <td class="enum_member_name"><p><a name="HB-MEMORY-MODE-READONLY-MAY-MAKE-WRITABLE:CAPS"></a>HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE</p></td> <td> </td> <td> </td> </tr> </tbody> </table></div> </div> </div> </div> </div> <div class="footer"> <hr>Generated by GTK-Doc V1.27.1</div> </body> </html>