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<a name="gdk-pixbuf-File-Loading"></a><div class="titlepage"></div>
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<td valign="top">
<h2><span class="refentrytitle"><a name="gdk-pixbuf-File-Loading.top_of_page"></a>File Loading</span></h2>
<p>File Loading — Loading a pixbuf from a file.</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gdk-pixbuf-File-Loading.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="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-file" title="gdk_pixbuf_new_from_file ()">gdk_pixbuf_new_from_file</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-file-at-size" title="gdk_pixbuf_new_from_file_at_size ()">gdk_pixbuf_new_from_file_at_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-file-at-scale" title="gdk_pixbuf_new_from_file_at_scale ()">gdk_pixbuf_new_from_file_at_scale</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk-pixbuf-Module-Interface.html#GdkPixbufFormat" title="struct GdkPixbufFormat"><span class="returnvalue">GdkPixbufFormat</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-get-file-info" title="gdk_pixbuf_get_file_info ()">gdk_pixbuf_get_file_info</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="gdk-pixbuf-File-Loading.html#gdk-pixbuf-get-file-info-async" title="gdk_pixbuf_get_file_info_async ()">gdk_pixbuf_get_file_info_async</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk-pixbuf-Module-Interface.html#GdkPixbufFormat" title="struct GdkPixbufFormat"><span class="returnvalue">GdkPixbufFormat</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-get-file-info-finish" title="gdk_pixbuf_get_file_info_finish ()">gdk_pixbuf_get_file_info_finish</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-resource" title="gdk_pixbuf_new_from_resource ()">gdk_pixbuf_new_from_resource</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-resource-at-scale" title="gdk_pixbuf_new_from_resource_at_scale ()">gdk_pixbuf_new_from_resource_at_scale</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-stream" title="gdk_pixbuf_new_from_stream ()">gdk_pixbuf_new_from_stream</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="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-stream-async" title="gdk_pixbuf_new_from_stream_async ()">gdk_pixbuf_new_from_stream_async</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-stream-finish" title="gdk_pixbuf_new_from_stream_finish ()">gdk_pixbuf_new_from_stream_finish</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-stream-at-scale" title="gdk_pixbuf_new_from_stream_at_scale ()">gdk_pixbuf_new_from_stream_at_scale</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="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-stream-at-scale-async" title="gdk_pixbuf_new_from_stream_at_scale_async ()">gdk_pixbuf_new_from_stream_at_scale_async</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gdk-pixbuf-File-Loading.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <gdk-pixbuf/gdk-pixbuf.h>
</pre>
</div>
<div class="refsect1">
<a name="gdk-pixbuf-File-Loading.description"></a><h2>Description</h2>
<p>The GdkPixBuf library provides a simple mechanism for loading
an image from a file in synchronous fashion. This means that the
library takes control of the application while the file is being
loaded; from the user's point of view, the application will block
until the image is done loading.</p>
<p>This interface can be used by applications in which blocking is
acceptable while an image is being loaded. It can also be used to
load small images in general. Applications that need progressive
loading can use the <a class="link" href="GdkPixbufLoader.html" title="GdkPixbufLoader"><span class="type">GdkPixbufLoader</span></a> functionality instead.</p>
</div>
<div class="refsect1">
<a name="gdk-pixbuf-File-Loading.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gdk-pixbuf-new-from-file"></a><h3>gdk_pixbuf_new_from_file ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
gdk_pixbuf_new_from_file (<em class="parameter"><code>const <span class="type">char</span> *filename</code></em>,
<em class="parameter"><code><a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates a new pixbuf by loading an image from a file. The file format is
detected automatically. If <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is returned, then <em class="parameter"><code>error</code></em>
will be set.
Possible errors are in the <a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GDK-PIXBUF-ERROR:CAPS" title="GDK_PIXBUF_ERROR"><span class="type">GDK_PIXBUF_ERROR</span></a> and <a href="../glib/glib-File-Utilities.html#G-FILE-ERROR:CAPS"><span class="type">G_FILE_ERROR</span></a> domains.</p>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-file.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>filename</p></td>
<td class="parameter_description"><p>Name of file to load, in the GLib file name encoding</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>Return location for an error</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-file.returns"></a><h4>Returns</h4>
<p> A newly-created pixbuf with a reference count of 1, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if
any of several error conditions occurred: the file could not be opened,
there was no loader for the file's format, there was not enough memory to
allocate the image buffer, or the image file contained invalid data.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-new-from-file-at-size"></a><h3>gdk_pixbuf_new_from_file_at_size ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
gdk_pixbuf_new_from_file_at_size (<em class="parameter"><code>const <span class="type">char</span> *filename</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates a new pixbuf by loading an image from a file.
The file format is detected automatically. If <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is returned, then
<em class="parameter"><code>error</code></em>
will be set. Possible errors are in the <a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GDK-PIXBUF-ERROR:CAPS" title="GDK_PIXBUF_ERROR"><span class="type">GDK_PIXBUF_ERROR</span></a> and
<a href="../glib/glib-File-Utilities.html#G-FILE-ERROR:CAPS"><span class="type">G_FILE_ERROR</span></a> domains.</p>
<p>The image will be scaled to fit in the requested size, preserving
the image's aspect ratio. Note that the returned pixbuf may be smaller
than <em class="parameter"><code>width</code></em>
x <em class="parameter"><code>height</code></em>
, if the aspect ratio requires it. To load
and image at the requested size, regardless of aspect ratio, use
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-file-at-scale" title="gdk_pixbuf_new_from_file_at_scale ()"><code class="function">gdk_pixbuf_new_from_file_at_scale()</code></a>.</p>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-file-at-size.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>filename</p></td>
<td class="parameter_description"><p>Name of file to load, in the GLib file name encoding</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>The width the image should have or -1 to not constrain the width</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>The height the image should have or -1 to not constrain the height</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>Return location for an error</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-file-at-size.returns"></a><h4>Returns</h4>
<p> A newly-created pixbuf with a reference count of 1, or
<a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if any of several error conditions occurred: the file could not
be opened, there was no loader for the file's format, there was not
enough memory to allocate the image buffer, or the image file contained
invalid data.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-4.html#api-index-2.4">2.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-new-from-file-at-scale"></a><h3>gdk_pixbuf_new_from_file_at_scale ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
gdk_pixbuf_new_from_file_at_scale (<em class="parameter"><code>const <span class="type">char</span> *filename</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> preserve_aspect_ratio</code></em>,
<em class="parameter"><code><a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates a new pixbuf by loading an image from a file. The file format is
detected automatically. If <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is returned, then <em class="parameter"><code>error</code></em>
will be set.
Possible errors are in the <a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GDK-PIXBUF-ERROR:CAPS" title="GDK_PIXBUF_ERROR"><span class="type">GDK_PIXBUF_ERROR</span></a> and <a href="../glib/glib-File-Utilities.html#G-FILE-ERROR:CAPS"><span class="type">G_FILE_ERROR</span></a> domains.
The image will be scaled to fit in the requested size, optionally preserving
the image's aspect ratio. </p>
<p>When preserving the aspect ratio, a <em class="parameter"><code>width</code></em>
of -1 will cause the image
to be scaled to the exact given height, and a <em class="parameter"><code>height</code></em>
of -1 will cause
the image to be scaled to the exact given width. When not preserving
aspect ratio, a <em class="parameter"><code>width</code></em>
or <em class="parameter"><code>height</code></em>
of -1 means to not scale the image
at all in that dimension. Negative values for <em class="parameter"><code>width</code></em>
and <em class="parameter"><code>height</code></em>
are
allowed since 2.8.</p>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-file-at-scale.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>filename</p></td>
<td class="parameter_description"><p>Name of file to load, in the GLib file name encoding</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>The width the image should have or -1 to not constrain the width</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>The height the image should have or -1 to not constrain the height</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>preserve_aspect_ratio</p></td>
<td class="parameter_description"><p><a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> to preserve the image's aspect ratio</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>Return location for an error</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-file-at-scale.returns"></a><h4>Returns</h4>
<p> A newly-created pixbuf with a reference count of 1, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
if any of several error conditions occurred: the file could not be opened,
there was no loader for the file's format, there was not enough memory to
allocate the image buffer, or the image file contained invalid data.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-6.html#api-index-2.6">2.6</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-get-file-info"></a><h3>gdk_pixbuf_get_file_info ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-Module-Interface.html#GdkPixbufFormat" title="struct GdkPixbufFormat"><span class="returnvalue">GdkPixbufFormat</span></a> *
gdk_pixbuf_get_file_info (<em class="parameter"><code>const <a href="../glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *filename</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> *width</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> *height</code></em>);</pre>
<p>Parses an image file far enough to determine its format and size.</p>
<div class="refsect3">
<a name="gdk-pixbuf-get-file-info.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>filename</p></td>
<td class="parameter_description"><p>The name of the file to identify.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p> Return location for the width of the
image, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed instead of a pointer to a location."><span class="acronym">optional</span></acronym>][<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p> Return location for the height of the
image, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed instead of a pointer to a location."><span class="acronym">optional</span></acronym>][<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="gdk-pixbuf-get-file-info.returns"></a><h4>Returns</h4>
<p> A <a class="link" href="gdk-pixbuf-Module-Interface.html#GdkPixbufFormat" title="struct GdkPixbufFormat"><span class="type">GdkPixbufFormat</span></a> describing
the image format of the file or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the image format wasn't
recognized. The return value is owned by <a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="type">GdkPixbuf</span></a> and should
not be freed. </p>
<p><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>][<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-2-4.html#api-index-2.4">2.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-get-file-info-async"></a><h3>gdk_pixbuf_get_file_info_async ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_pixbuf_get_file_info_async (<em class="parameter"><code>const <a href="../glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *filename</code></em>,
<em class="parameter"><code><a href="../gio/GCancellable.html#GCancellable-struct"><span class="type">GCancellable</span></a> *cancellable</code></em>,
<em class="parameter"><code><a href="../gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> callback</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Asynchronously parses an image file far enough to determine its
format and size.</p>
<p>For more details see <a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-get-file-info" title="gdk_pixbuf_get_file_info ()"><code class="function">gdk_pixbuf_get_file_info()</code></a>, which is the synchronous
version of this function.</p>
<p>When the operation is finished, <em class="parameter"><code>callback</code></em>
will be called in the
main thread. You can then call <a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-get-file-info-finish" title="gdk_pixbuf_get_file_info_finish ()"><code class="function">gdk_pixbuf_get_file_info_finish()</code></a> to
get the result of the operation.</p>
<div class="refsect3">
<a name="gdk-pixbuf-get-file-info-async.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>filename</p></td>
<td class="parameter_description"><p>The name of the file to identify</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="../gio/GCancellable.html#GCancellable-struct"><span class="type">GCancellable</span></a> object, <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <a href="../gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> to call when the file info is available</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>the data to pass to the callback function</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-32.html#api-index-2.32">2.32</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-get-file-info-finish"></a><h3>gdk_pixbuf_get_file_info_finish ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-Module-Interface.html#GdkPixbufFormat" title="struct GdkPixbufFormat"><span class="returnvalue">GdkPixbufFormat</span></a> *
gdk_pixbuf_get_file_info_finish (<em class="parameter"><code><a href="../gio/GAsyncResult.html#GAsyncResult-struct"><span class="type">GAsyncResult</span></a> *async_result</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> *width</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> *height</code></em>,
<em class="parameter"><code><a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Finishes an asynchronous pixbuf parsing operation started with
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-get-file-info-async" title="gdk_pixbuf_get_file_info_async ()"><code class="function">gdk_pixbuf_get_file_info_async()</code></a>.</p>
<div class="refsect3">
<a name="gdk-pixbuf-get-file-info-finish.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>async_result</p></td>
<td class="parameter_description"><p>a <a href="../gio/GAsyncResult.html#GAsyncResult-struct"><span class="type">GAsyncResult</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p> Return location for the width of the image, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </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>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p> Return location for the height of the image, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </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>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-pixbuf-get-file-info-finish.returns"></a><h4>Returns</h4>
<p> A <a class="link" href="gdk-pixbuf-Module-Interface.html#GdkPixbufFormat" title="struct GdkPixbufFormat"><span class="type">GdkPixbufFormat</span></a> describing the image
format of the file or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the image format wasn't
recognized. The return value is owned by GdkPixbuf and should
not be freed. </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-2-32.html#api-index-2.32">2.32</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-new-from-resource"></a><h3>gdk_pixbuf_new_from_resource ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
gdk_pixbuf_new_from_resource (<em class="parameter"><code>const <span class="type">char</span> *resource_path</code></em>,
<em class="parameter"><code><a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates a new pixbuf by loading an image from an resource.</p>
<p>The file format is detected automatically. If <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is returned, then
<em class="parameter"><code>error</code></em>
will be set.</p>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-resource.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>resource_path</p></td>
<td class="parameter_description"><p>the path of the resource file</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>Return location for an error</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-resource.returns"></a><h4>Returns</h4>
<p> A newly-created pixbuf, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if any of several error
conditions occurred: the file could not be opened, the image format is
not supported, there was not enough memory to allocate the image buffer,
the stream contained invalid data, or the operation was cancelled.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-new-from-resource-at-scale"></a><h3>gdk_pixbuf_new_from_resource_at_scale ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
gdk_pixbuf_new_from_resource_at_scale (<em class="parameter"><code>const <span class="type">char</span> *resource_path</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> preserve_aspect_ratio</code></em>,
<em class="parameter"><code><a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates a new pixbuf by loading an image from an resource.</p>
<p>The file format is detected automatically. If <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is returned, then
<em class="parameter"><code>error</code></em>
will be set.</p>
<p>The image will be scaled to fit in the requested size, optionally
preserving the image's aspect ratio. When preserving the aspect ratio,
a <em class="parameter"><code>width</code></em>
of -1 will cause the image to be scaled to the exact given
height, and a <em class="parameter"><code>height</code></em>
of -1 will cause the image to be scaled to the
exact given width. When not preserving aspect ratio, a <em class="parameter"><code>width</code></em>
or
<em class="parameter"><code>height</code></em>
of -1 means to not scale the image at all in that dimension.</p>
<p>The stream is not closed.</p>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-resource-at-scale.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>resource_path</p></td>
<td class="parameter_description"><p>the path of the resource file</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>The width the image should have or -1 to not constrain the width</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>The height the image should have or -1 to not constrain the height</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>preserve_aspect_ratio</p></td>
<td class="parameter_description"><p><a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> to preserve the image's aspect ratio</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>Return location for an error</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-resource-at-scale.returns"></a><h4>Returns</h4>
<p> A newly-created pixbuf, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if any of several error
conditions occurred: the file could not be opened, the image format is
not supported, there was not enough memory to allocate the image buffer,
the stream contained invalid data, or the operation was cancelled.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-new-from-stream"></a><h3>gdk_pixbuf_new_from_stream ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
gdk_pixbuf_new_from_stream (<em class="parameter"><code><a href="../gio/GInputStream.html#GInputStream-struct"><span class="type">GInputStream</span></a> *stream</code></em>,
<em class="parameter"><code><a href="../gio/GCancellable.html#GCancellable-struct"><span class="type">GCancellable</span></a> *cancellable</code></em>,
<em class="parameter"><code><a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates a new pixbuf by loading an image from an input stream. </p>
<p>The file format is detected automatically. If <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is returned, then
<em class="parameter"><code>error</code></em>
will be set. The <em class="parameter"><code>cancellable</code></em>
can be used to abort the operation
from another thread. If the operation was cancelled, the error
<a href="../gio/gio-GIOError.html#G-IO-ERROR-CANCELLED:CAPS"><code class="literal">G_IO_ERROR_CANCELLED</code></a> will be returned. Other possible errors are in
the <a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GDK-PIXBUF-ERROR:CAPS" title="GDK_PIXBUF_ERROR"><span class="type">GDK_PIXBUF_ERROR</span></a> and <a href="../gio/gio-GIOError.html#G-IO-ERROR:CAPS"><code class="literal">G_IO_ERROR</code></a> domains. </p>
<p>The stream is not closed.</p>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-stream.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>stream</p></td>
<td class="parameter_description"><p>a <a href="../gio/GInputStream.html#GInputStream-struct"><span class="type">GInputStream</span></a> to load the pixbuf from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="../gio/GCancellable.html#GCancellable-struct"><span class="type">GCancellable</span></a> object, <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>Return location for an error</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-stream.returns"></a><h4>Returns</h4>
<p> A newly-created pixbuf, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if any of several error
conditions occurred: the file could not be opened, the image format is
not supported, there was not enough memory to allocate the image buffer,
the stream contained invalid data, or the operation was cancelled.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-14.html#api-index-2.14">2.14</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-new-from-stream-async"></a><h3>gdk_pixbuf_new_from_stream_async ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_pixbuf_new_from_stream_async (<em class="parameter"><code><a href="../gio/GInputStream.html#GInputStream-struct"><span class="type">GInputStream</span></a> *stream</code></em>,
<em class="parameter"><code><a href="../gio/GCancellable.html#GCancellable-struct"><span class="type">GCancellable</span></a> *cancellable</code></em>,
<em class="parameter"><code><a href="../gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> callback</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Creates a new pixbuf by asynchronously loading an image from an input stream.</p>
<p>For more details see <a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-stream" title="gdk_pixbuf_new_from_stream ()"><code class="function">gdk_pixbuf_new_from_stream()</code></a>, which is the synchronous
version of this function.</p>
<p>When the operation is finished, <em class="parameter"><code>callback</code></em>
will be called in the main thread.
You can then call <a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-stream-finish" title="gdk_pixbuf_new_from_stream_finish ()"><code class="function">gdk_pixbuf_new_from_stream_finish()</code></a> to get the result of the operation.</p>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-stream-async.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>stream</p></td>
<td class="parameter_description"><p>a <a href="../gio/GInputStream.html#GInputStream-struct"><span class="type">GInputStream</span></a> from which to load the pixbuf</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="../gio/GCancellable.html#GCancellable-struct"><span class="type">GCancellable</span></a> object, <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <a href="../gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> to call when the pixbuf is loaded</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>the data to pass to the callback function</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 2.24</p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-new-from-stream-finish"></a><h3>gdk_pixbuf_new_from_stream_finish ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
gdk_pixbuf_new_from_stream_finish (<em class="parameter"><code><a href="../gio/GAsyncResult.html#GAsyncResult-struct"><span class="type">GAsyncResult</span></a> *async_result</code></em>,
<em class="parameter"><code><a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Finishes an asynchronous pixbuf creation operation started with
<a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-stream-async" title="gdk_pixbuf_new_from_stream_async ()"><code class="function">gdk_pixbuf_new_from_stream_async()</code></a>.</p>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-stream-finish.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>async_result</p></td>
<td class="parameter_description"><p>a <a href="../gio/GAsyncResult.html#GAsyncResult-struct"><span class="type">GAsyncResult</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-stream-finish.returns"></a><h4>Returns</h4>
<p> a <a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="type">GdkPixbuf</span></a> or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> on error. Free the returned
object with <a href="../gobject/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a>.</p>
</div>
<p class="since">Since: 2.24</p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-new-from-stream-at-scale"></a><h3>gdk_pixbuf_new_from_stream_at_scale ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
gdk_pixbuf_new_from_stream_at_scale (<em class="parameter"><code><a href="../gio/GInputStream.html#GInputStream-struct"><span class="type">GInputStream</span></a> *stream</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> width</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> height</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> preserve_aspect_ratio</code></em>,
<em class="parameter"><code><a href="../gio/GCancellable.html#GCancellable-struct"><span class="type">GCancellable</span></a> *cancellable</code></em>,
<em class="parameter"><code><a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates a new pixbuf by loading an image from an input stream. </p>
<p>The file format is detected automatically. If <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is returned, then
<em class="parameter"><code>error</code></em>
will be set. The <em class="parameter"><code>cancellable</code></em>
can be used to abort the operation
from another thread. If the operation was cancelled, the error
<a href="../gio/gio-GIOError.html#G-IO-ERROR-CANCELLED:CAPS"><code class="literal">G_IO_ERROR_CANCELLED</code></a> will be returned. Other possible errors are in
the <a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GDK-PIXBUF-ERROR:CAPS" title="GDK_PIXBUF_ERROR"><span class="type">GDK_PIXBUF_ERROR</span></a> and <a href="../gio/gio-GIOError.html#G-IO-ERROR:CAPS"><code class="literal">G_IO_ERROR</code></a> domains. </p>
<p>The image will be scaled to fit in the requested size, optionally
preserving the image's aspect ratio.</p>
<p>When preserving the aspect ratio, a <em class="parameter"><code>width</code></em>
of -1 will cause the image to be
scaled to the exact given height, and a <em class="parameter"><code>height</code></em>
of -1 will cause the image
to be scaled to the exact given width. If both <em class="parameter"><code>width</code></em>
and <em class="parameter"><code>height</code></em>
are
given, this function will behave as if the smaller of the two values
is passed as -1.</p>
<p>When not preserving aspect ratio, a <em class="parameter"><code>width</code></em>
or <em class="parameter"><code>height</code></em>
of -1 means to not
scale the image at all in that dimension.</p>
<p>The stream is not closed.</p>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-stream-at-scale.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>stream</p></td>
<td class="parameter_description"><p>a <a href="../gio/GInputStream.html#GInputStream-struct"><span class="type">GInputStream</span></a> to load the pixbuf from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>The width the image should have or -1 to not constrain the width</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>The height the image should have or -1 to not constrain the height</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>preserve_aspect_ratio</p></td>
<td class="parameter_description"><p><a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> to preserve the image's aspect ratio</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="../gio/GCancellable.html#GCancellable-struct"><span class="type">GCancellable</span></a> object, <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>Return location for an error</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-stream-at-scale.returns"></a><h4>Returns</h4>
<p> A newly-created pixbuf, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if any of several error
conditions occurred: the file could not be opened, the image format is
not supported, there was not enough memory to allocate the image buffer,
the stream contained invalid data, or the operation was cancelled.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-14.html#api-index-2.14">2.14</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdk-pixbuf-new-from-stream-at-scale-async"></a><h3>gdk_pixbuf_new_from_stream_at_scale_async ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdk_pixbuf_new_from_stream_at_scale_async
(<em class="parameter"><code><a href="../gio/GInputStream.html#GInputStream-struct"><span class="type">GInputStream</span></a> *stream</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> width</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> height</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> preserve_aspect_ratio</code></em>,
<em class="parameter"><code><a href="../gio/GCancellable.html#GCancellable-struct"><span class="type">GCancellable</span></a> *cancellable</code></em>,
<em class="parameter"><code><a href="../gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> callback</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Creates a new pixbuf by asynchronously loading an image from an input stream.</p>
<p>For more details see <a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-stream-at-scale" title="gdk_pixbuf_new_from_stream_at_scale ()"><code class="function">gdk_pixbuf_new_from_stream_at_scale()</code></a>, which is the synchronous
version of this function.</p>
<p>When the operation is finished, <em class="parameter"><code>callback</code></em>
will be called in the main thread.
You can then call <a class="link" href="gdk-pixbuf-File-Loading.html#gdk-pixbuf-new-from-stream-finish" title="gdk_pixbuf_new_from_stream_finish ()"><code class="function">gdk_pixbuf_new_from_stream_finish()</code></a> to get the result of the operation.</p>
<div class="refsect3">
<a name="gdk-pixbuf-new-from-stream-at-scale-async.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>stream</p></td>
<td class="parameter_description"><p>a <a href="../gio/GInputStream.html#GInputStream-struct"><span class="type">GInputStream</span></a> from which to load the pixbuf</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>the width the image should have or -1 to not constrain the width</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>the height the image should have or -1 to not constrain the height</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>preserve_aspect_ratio</p></td>
<td class="parameter_description"><p><a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> to preserve the image's aspect ratio</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="../gio/GCancellable.html#GCancellable-struct"><span class="type">GCancellable</span></a> object, <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <a href="../gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> to call when the pixbuf is loaded</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>the data to pass to the callback function</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 2.24</p>
</div>
</div>
<div class="refsect1">
<a name="gdk-pixbuf-File-Loading.other_details"></a><h2>Types and Values</h2>
</div>
<div class="refsect1">
<a name="gdk-pixbuf-File-Loading.see-also"></a><h2>See Also</h2>
<p><a class="link" href="GdkPixbufLoader.html" title="GdkPixbufLoader"><span class="type">GdkPixbufLoader</span></a>.</p>
</div>
</div>
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