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<h1>Gdk::PixbufLoader Class Reference</h1>Inheritance diagram for Gdk::PixbufLoader:<p><center><img src="classGdk_1_1PixbufLoader__inherit__graph.png" border="0" usemap="#Gdk_1_1PixbufLoader__inherit__map" alt="Inheritance graph"></center>
<map name="Gdk_1_1PixbufLoader__inherit__map">
<area href="classGlib_1_1Object.html" shape="rect" coords="27,86,107,105" alt="">
<area href="classGlib_1_1ObjectBase.html" shape="rect" coords="12,17,121,36" alt="">
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<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="classGdk_1_1PixbufLoader-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Methods</h2></td></tr>
<tr><td nowrap align=right valign=top>virtual </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a0">~PixbufLoader</a> ()</td></tr>
<tr><td nowrap align=right valign=top>GdkPixbufLoader* </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a1">gobj</a> ()</td></tr>
<tr><td nowrap align=right valign=top>const GdkPixbufLoader* </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a2">gobj</a> () const</td></tr>
<tr><td nowrap align=right valign=top>GdkPixbufLoader* </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a3">gobj_copy</a> ()</td></tr>
<tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a4">write</a> (const guint8* buf, gsize count)</td></tr>
<tr><td> </td><td><font size=-1><em>Causes the pixbuf loader to parse the next <em>count</em> bytes of an image.</em> <a href="#a4"></a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a5">close</a> ()</td></tr>
<tr><td> </td><td><font size=-1><em>Informs a pixbuf loader that no further writes with <a class="el" href="classGdk_1_1PixbufLoader.html#a4">PixbufLoader::write()</a> will occur, so that it can free its internal loading structures.</em> <a href="#a5"></a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><<a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a>> </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a6">get_pixbuf</a> ()</td></tr>
<tr><td> </td><td><font size=-1><em>Queries the <a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a> that a pixbuf loader is currently creating.</em> <a href="#a6"></a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><<a class="el" href="classGdk_1_1PixbufAnimation.html">Gdk::PixbufAnimation</a>> </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a7">get_animation</a> ()</td></tr>
<tr><td> </td><td><font size=-1><em>Queries the <a class="el" href="classGdk_1_1PixbufAnimation.html">Gdk::PixbufAnimation</a> that a pixbuf loader is currently creating.</em> <a href="#a7"></a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="classGlib_1_1SignalProxy0.html">Glib::SignalProxy0</a><void> </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a8">signal_area_prepared</a> ()</td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="classGlib_1_1SignalProxy4.html">Glib::SignalProxy4</a>< void,<br>
int, int, int, int > </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a9">signal_area_updated</a> ()</td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="classGlib_1_1SignalProxy0.html">Glib::SignalProxy0</a><void> </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#a10">signal_closed</a> ()</td></tr>
<tr><td colspan=2><br><h2>Static Public Methods</h2></td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><PixbufLoader> </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#d0">create</a> ()</td></tr>
<tr><td> </td><td><font size=-1><em>Creates a new pixbuf loader object.</em> <a href="#d0"></a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><PixbufLoader> </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#d1">create</a> (const <a class="el" href="classGlib_1_1ustring.html">Glib::ustring</a>& image_type)</td></tr>
<tr><td> </td><td><font size=-1><em>Creates a new pixbuf loader object for a specific image type.</em> <a href="#d1"></a><em></em></font><br><br></td></tr>
<tr><td colspan=2><br><h2>Protected Methods</h2></td></tr>
<tr><td nowrap align=right valign=top> </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#b0">PixbufLoader</a> ()</td></tr>
<tr><td> </td><td><font size=-1><em>Constructs a pixbuf loader object.</em> <a href="#b0"></a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top> </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#b1">PixbufLoader</a> (const <a class="el" href="classGlib_1_1ustring.html">Glib::ustring</a>& image_type)</td></tr>
<tr><td> </td><td><font size=-1><em>Constructs a pixbuf loader object for a specific image type.</em> <a href="#b1"></a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>virtual void </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#b2">on_area_prepared</a> ()</td></tr>
<tr><td nowrap align=right valign=top>virtual void </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#b3">on_area_updated</a> (int x, int y, int width, int height)</td></tr>
<tr><td nowrap align=right valign=top>virtual void </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#b4">on_closed</a> ()</td></tr>
<tr><td colspan=2><br><h2>Related Functions</h2></td></tr>
<tr><td colspan=2>(Note that these are not member functions.)<br><br></td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><Gdk::PixbufLoader> </td><td valign=bottom><a class="el" href="classGdk_1_1PixbufLoader.html#k0">wrap</a> (GdkPixbufLoader* object, bool take_copy=false)</td></tr>
</table>
<hr><h2>Constructor & Destructor Documentation</h2>
<a name="a0" doxytag="Gdk::PixbufLoader::~PixbufLoader"></a><p>
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<td class="md" nowrap valign="top"> virtual Gdk::PixbufLoader::~PixbufLoader </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap><code> [virtual]</code></td>
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</td>
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</td>
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<a name="b0" doxytag="Gdk::PixbufLoader::PixbufLoader"></a><p>
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<td class="md" nowrap valign="top"> Gdk::PixbufLoader::PixbufLoader </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap><code> [protected]</code></td>
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</td>
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<p>
Constructs a pixbuf loader object.
<p>
</td>
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<a name="b1" doxytag="Gdk::PixbufLoader::PixbufLoader"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
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<td class="md">
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<td class="md" nowrap valign="top"> Gdk::PixbufLoader::PixbufLoader </td>
<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">const <a class="el" href="classGlib_1_1ustring.html">Glib::ustring</a>& </td>
<td class="mdname1" valign="top" nowrap> <em>image_type</em> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap><code> [explicit, protected]</code></td>
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</td>
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<p>
Constructs a pixbuf loader object for a specific image type.
<p>
Constructs a new pixbuf loader object that always attempts to parse image data as if it were an image of type <em>image_type,</em> instead of identifying the type automatically. Useful if you want an error if the image isn't the expected type, for loading image formats that can't be reliably identified by looking at the data, or if the user manually forces a specific type. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>image_type</em> </td><td>Name of the image format to be loaded with the image. </td></tr>
</table>
</dl>
<dl compact><dt><b>Exceptions:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>Gdk::PixbufError</em> </td><td></td></tr>
</table>
</dl>
</td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a name="a5" doxytag="Gdk::PixbufLoader::close"></a><p>
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<td class="md" nowrap valign="top"> void Gdk::PixbufLoader::close </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
</tr>
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</td>
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<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
<td>
<p>
Informs a pixbuf loader that no further writes with <a class="el" href="classGdk_1_1PixbufLoader.html#a4">PixbufLoader::write()</a> will occur, so that it can free its internal loading structures.
<p>
Also, tries to parse any data that hasn't yet been parsed; if the remaining data is partial or corrupt, an exception will be thrown. If you're just cancelling a load rather than expecting it to be finished, writing an empty <code>catch()</code> block to ignore errors is reasonable. <dl compact><dt><b>Exceptions:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>Gdk::PixbufError</em> </td><td></td></tr>
<tr><td valign=top><em>Glib::FileError</em> </td><td></td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a name="d1" doxytag="Gdk::PixbufLoader::create"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
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<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> <a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><PixbufLoader> Gdk::PixbufLoader::create </td>
<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">const <a class="el" href="classGlib_1_1ustring.html">Glib::ustring</a>& </td>
<td class="mdname1" valign="top" nowrap> <em>image_type</em> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap><code> [static]</code></td>
</tr>
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</td>
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<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Creates a new pixbuf loader object for a specific image type.
<p>
Creates a new pixbuf loader object that always attempts to parse image data as if it were an image of type <em>image_type,</em> instead of identifying the type automatically. Useful if you want an error if the image isn't the expected type, for loading image formats that can't be reliably identified by looking at the data, or if the user manually forces a specific type. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>image_type</em> </td><td>Name of the image format to be loaded with the image. </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>A newly-created pixbuf loader. </dd></dl>
<dl compact><dt><b>Exceptions:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>Gdk::PixbufError</em> </td><td></td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a name="d0" doxytag="Gdk::PixbufLoader::create"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
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<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> <a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><PixbufLoader> Gdk::PixbufLoader::create </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap><code> [static]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Creates a new pixbuf loader object.
<p>
<dl compact><dt><b>Returns:</b></dt><dd>A newly-created pixbuf loader. </dd></dl>
</td>
</tr>
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<a name="a7" doxytag="Gdk::PixbufLoader::get_animation"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
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<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> <a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><<a class="el" href="classGdk_1_1PixbufAnimation.html">Gdk::PixbufAnimation</a>> Gdk::PixbufLoader::get_animation </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
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<p>
Queries the <a class="el" href="classGdk_1_1PixbufAnimation.html">Gdk::PixbufAnimation</a> that a pixbuf loader is currently creating.
<p>
In general it only makes sense to call this function after the "area_prepared" signal has been emitted by the loader. If the loader doesn't have enough bytes yet (hasn't emitted the "area_prepared" signal) this function will return <code>0</code>. <dl compact><dt><b>Returns:</b></dt><dd>The <a class="el" href="classGdk_1_1PixbufAnimation.html">Gdk::PixbufAnimation</a> that the loader is loading, or <code>0</code> if not enough data has been read to determine the information. </dd></dl>
</td>
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<a name="a6" doxytag="Gdk::PixbufLoader::get_pixbuf"></a><p>
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<td class="md">
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<td class="md" nowrap valign="top"> <a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><<a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a>> Gdk::PixbufLoader::get_pixbuf </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
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</td>
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</td>
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<p>
Queries the <a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a> that a pixbuf loader is currently creating.
<p>
In general it only makes sense to call this function after the "area_prepared" signal has been emitted by the loader; this means that enough data has been read to know the size of the image that will be allocated. If the loader has not received enough data via <a class="el" href="classGdk_1_1PixbufLoader.html#a4">write()</a>, then this function returns <code>0</code>. The returned pixbuf will be the same in all future calls to the loader, so simply calling Glib::object_ref() should be sufficient to continue using it. Additionally, if the loader is an animation, it will return the "static image" of the animation (see Gdk::PixbufAnimation::get_static_image()). <dl compact><dt><b>Returns:</b></dt><dd>The <a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a> that the loader is creating, or <code>0</code> if not enough data has been read to determine how to create the image buffer. </dd></dl>
</td>
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<a name="a2" doxytag="Gdk::PixbufLoader::gobj"></a><p>
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<td class="md">
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<td class="md" nowrap valign="top"> const GdkPixbufLoader* Gdk::PixbufLoader::gobj </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap> const<code> [inline]</code></td>
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<p>
<p>
Reimplemented from <a class="el" href="classGlib_1_1ObjectBase.html#a3">Glib::ObjectBase</a>. </td>
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<a name="a1" doxytag="Gdk::PixbufLoader::gobj"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
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<td class="md">
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<td class="md" nowrap valign="top"> GdkPixbufLoader* Gdk::PixbufLoader::gobj </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap><code> [inline]</code></td>
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<td>
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<p>
<p>
Reimplemented from <a class="el" href="classGlib_1_1ObjectBase.html#a2">Glib::ObjectBase</a>. </td>
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<a name="a3" doxytag="Gdk::PixbufLoader::gobj_copy"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
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<td class="md">
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<td class="md" nowrap valign="top"> GdkPixbufLoader* Gdk::PixbufLoader::gobj_copy </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
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</td>
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<p>
</td>
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<a name="b2" doxytag="Gdk::PixbufLoader::on_area_prepared"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
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<td class="md">
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<td class="md" nowrap valign="top"> virtual void Gdk::PixbufLoader::on_area_prepared </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap><code> [protected, virtual]</code></td>
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</td>
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<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
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<p>
</td>
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<a name="b3" doxytag="Gdk::PixbufLoader::on_area_updated"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
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<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> virtual void Gdk::PixbufLoader::on_area_updated </td>
<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">int </td>
<td class="mdname" nowrap> <em>x</em>, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>y</em>, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>width</em>, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>height</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [protected, virtual]</code></td>
</tr>
</table>
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<a name="b4" doxytag="Gdk::PixbufLoader::on_closed"></a><p>
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<td class="md" nowrap valign="top"> virtual void Gdk::PixbufLoader::on_closed </td>
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<a name="a8" doxytag="Gdk::PixbufLoader::signal_area_prepared"></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classGlib_1_1SignalProxy0.html">Glib::SignalProxy0</a><void> Gdk::PixbufLoader::signal_area_prepared </td>
<td class="md" valign="top">(</td>
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<dl compact><dt><b>Prototype:</b></dt><dd><code>void area_prepared()</code> </dd></dl>
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<a name="a9" doxytag="Gdk::PixbufLoader::signal_area_updated"></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classGlib_1_1SignalProxy4.html">Glib::SignalProxy4</a><void,int,int,int,int> Gdk::PixbufLoader::signal_area_updated </td>
<td class="md" valign="top">(</td>
<td class="mdname1" valign="top" nowrap> </td>
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<dl compact><dt><b>Prototype:</b></dt><dd><code>void area_updated(int x, int y, int width, int height)</code> </dd></dl>
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<a name="a10" doxytag="Gdk::PixbufLoader::signal_closed"></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classGlib_1_1SignalProxy0.html">Glib::SignalProxy0</a><void> Gdk::PixbufLoader::signal_closed </td>
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<dl compact><dt><b>Prototype:</b></dt><dd><code>void closed()</code> </dd></dl>
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<a name="a4" doxytag="Gdk::PixbufLoader::write"></a><p>
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<td class="md" nowrap valign="top"> void Gdk::PixbufLoader::write </td>
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<td class="md" nowrap valign="top">const guint8* </td>
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<td class="md" nowrap>gsize </td>
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<p>
Causes the pixbuf loader to parse the next <em>count</em> bytes of an image.
<p>
It will return if the data was loaded successfully, and throw an exception if an error occurred. In the latter case, the loader will be closed, and will not accept further writes. <dl compact><dt><b>Parameters:</b></dt><dd>
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<tr><td valign=top><em>buf</em> </td><td>Pointer to image data. </td></tr>
<tr><td valign=top><em>count</em> </td><td>Length of the <em>buf</em> buffer in bytes. </td></tr>
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<dl compact><dt><b>Exceptions:</b></dt><dd>
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<tr><td valign=top><em>Gdk::PixbufError</em> </td><td></td></tr>
<tr><td valign=top><em>Glib::FileError</em> </td><td></td></tr>
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<hr><h2>Friends And Related Function Documentation</h2>
<a name="k0" doxytag="Gdk::PixbufLoader::wrap"></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><Gdk::PixbufLoader> wrap </td>
<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">GdkPixbufLoader* </td>
<td class="mdname" nowrap> <em>object</em>, </td>
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<td class="md" nowrap>bool </td>
<td class="mdname" nowrap> <em>take_copy</em> = false</td>
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<td class="md">) </td>
<td class="md" colspan="2"><code> [related]</code></td>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="pixbufloader_8h.html">pixbufloader.h</a></ul>
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