add cairo

author: sanine <sanine.not@pm.me> 2022-10-12 12:03:23 -0500
committer: sanine <sanine.not@pm.me> 2022-10-12 12:03:23 -0500
commit: 530ffd0b7d3c39757b20f00716e486b5caf89aff (patch)
tree: 76b35fdf57317038acf6b828871f6ae25fce2ebe /libs/cairo-1.16.0/doc/public/html/cairo-Win32-Surfaces.html
parent: 3dbe9332e47c143a237db12440f134caebd1cfbe (diff)
1 files changed, 413 insertions, 0 deletions
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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>Win32 Surfaces: Cairo: A Vector Graphics Library</title>
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+<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
+                  <a href="#cairo-Win32-Surfaces.description" class="shortcut">Description</a></span>
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+<div class="refentry">
+<a name="cairo-Win32-Surfaces"></a><div class="titlepage"></div>
+<div class="refnamediv"><table width="100%"><tr>
+<td valign="top">
+<h2><span class="refentrytitle"><a name="cairo-Win32-Surfaces.top_of_page"></a>Win32 Surfaces</span></h2>
+<p>Win32 Surfaces — Microsoft Windows surface support</p>
+</td>
+<td class="gallery_image" valign="top" align="right"></td>
+</tr></table></div>
+<div class="refsect1">
+<a name="cairo-Win32-Surfaces.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="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+</td>
+<td class="function_name">
+<a class="link" href="cairo-Win32-Surfaces.html#cairo-win32-surface-create" title="cairo_win32_surface_create ()">cairo_win32_surface_create</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+</td>
+<td class="function_name">
+<a class="link" href="cairo-Win32-Surfaces.html#cairo-win32-surface-create-with-dib" title="cairo_win32_surface_create_with_dib ()">cairo_win32_surface_create_with_dib</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+</td>
+<td class="function_name">
+<a class="link" href="cairo-Win32-Surfaces.html#cairo-win32-surface-create-with-ddb" title="cairo_win32_surface_create_with_ddb ()">cairo_win32_surface_create_with_ddb</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+</td>
+<td class="function_name">
+<a class="link" href="cairo-Win32-Surfaces.html#cairo-win32-surface-create-with-format" title="cairo_win32_surface_create_with_format ()">cairo_win32_surface_create_with_format</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+</td>
+<td class="function_name">
+<a class="link" href="cairo-Win32-Surfaces.html#cairo-win32-printing-surface-create" title="cairo_win32_printing_surface_create ()">cairo_win32_printing_surface_create</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<span class="returnvalue">HDC</span>
+</td>
+<td class="function_name">
+<a class="link" href="cairo-Win32-Surfaces.html#cairo-win32-surface-get-dc" title="cairo_win32_surface_get_dc ()">cairo_win32_surface_get_dc</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+</td>
+<td class="function_name">
+<a class="link" href="cairo-Win32-Surfaces.html#cairo-win32-surface-get-image" title="cairo_win32_surface_get_image ()">cairo_win32_surface_get_image</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<div class="refsect1">
+<a name="cairo-Win32-Surfaces.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="define_keyword">#define</td>
+<td class="function_name"><a class="link" href="cairo-Win32-Surfaces.html#CAIRO-HAS-WIN32-SURFACE:CAPS" title="CAIRO_HAS_WIN32_SURFACE">CAIRO_HAS_WIN32_SURFACE</a></td>
+</tr></tbody>
+</table></div>
+</div>
+<div class="refsect1">
+<a name="cairo-Win32-Surfaces.description"></a><h2>Description</h2>
+<p>The Microsoft Windows surface is used to render cairo graphics to
+Microsoft Windows windows, bitmaps, and printing device contexts.</p>
+<p>The surface returned by <a class="link" href="cairo-Win32-Surfaces.html#cairo-win32-printing-surface-create" title="cairo_win32_printing_surface_create ()"><code class="function">cairo_win32_printing_surface_create()</code></a> is of surface
+type <a class="link" href="cairo-cairo-surface-t.html#CAIRO-SURFACE-TYPE-WIN32-PRINTING:CAPS"><code class="literal">CAIRO_SURFACE_TYPE_WIN32_PRINTING</code></a> and is a multi-page vector surface
+type.</p>
+<p>The surface returned by the other win32 constructors is of surface type
+<a class="link" href="cairo-cairo-surface-t.html#CAIRO-SURFACE-TYPE-WIN32:CAPS"><code class="literal">CAIRO_SURFACE_TYPE_WIN32</code></a> and is a raster surface type.</p>
+</div>
+<div class="refsect1">
+<a name="cairo-Win32-Surfaces.functions_details"></a><h2>Functions</h2>
+<div class="refsect2">
+<a name="cairo-win32-surface-create"></a><h3>cairo_win32_surface_create ()</h3>
+<pre class="programlisting"><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+cairo_win32_surface_create (<em class="parameter"><code><span class="type">HDC</span> hdc</code></em>);</pre>
+<p>Creates a cairo surface that targets the given DC.  The DC will be
+queried for its initial clip extents, and this will be used as the
+size of the cairo surface.  The resulting surface will always be of
+format <a class="link" href="cairo-Image-Surfaces.html#CAIRO-FORMAT-RGB24:CAPS"><code class="literal">CAIRO_FORMAT_RGB24</code></a>; should you need another surface format,
+you will need to create one through
+<a class="link" href="cairo-Win32-Surfaces.html#cairo-win32-surface-create-with-format" title="cairo_win32_surface_create_with_format ()"><code class="function">cairo_win32_surface_create_with_format()</code></a> or
+<a class="link" href="cairo-Win32-Surfaces.html#cairo-win32-surface-create-with-dib" title="cairo_win32_surface_create_with_dib ()"><code class="function">cairo_win32_surface_create_with_dib()</code></a>.</p>
+<div class="refsect3">
+<a name="cairo-win32-surface-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>hdc</p></td>
+<td class="parameter_description"><p>the DC to create a surface for</p></td>
+<td class="parameter_annotations"> </td>
+</tr></tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="cairo-win32-surface-create.returns"></a><h4>Returns</h4>
+<p> the newly created surface, NULL on failure</p>
+</div>
+<p class="since">Since: 1.0</p>
+</div>
+<hr>
+<div class="refsect2">
+<a name="cairo-win32-surface-create-with-dib"></a><h3>cairo_win32_surface_create_with_dib ()</h3>
+<pre class="programlisting"><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+cairo_win32_surface_create_with_dib (<em class="parameter"><code><a class="link" href="cairo-Image-Surfaces.html#cairo-format-t" title="enum cairo_format_t"><span class="type">cairo_format_t</span></a> format</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>);</pre>
+<p>Creates a device-independent-bitmap surface not associated with
+any particular existing surface or device context. The created
+bitmap will be uninitialized.</p>
+<div class="refsect3">
+<a name="cairo-win32-surface-create-with-dib.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>format</p></td>
+<td class="parameter_description"><p>format of pixels in the surface to create</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>width</p></td>
+<td class="parameter_description"><p>width of the surface, in pixels</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>height</p></td>
+<td class="parameter_description"><p>height of the surface, in pixels</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="cairo-win32-surface-create-with-dib.returns"></a><h4>Returns</h4>
+<p> the newly created surface</p>
+</div>
+<p class="since">Since: 1.2</p>
+</div>
+<hr>
+<div class="refsect2">
+<a name="cairo-win32-surface-create-with-ddb"></a><h3>cairo_win32_surface_create_with_ddb ()</h3>
+<pre class="programlisting"><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+cairo_win32_surface_create_with_ddb (<em class="parameter"><code><span class="type">HDC</span> hdc</code></em>,
+                                     <em class="parameter"><code><a class="link" href="cairo-Image-Surfaces.html#cairo-format-t" title="enum cairo_format_t"><span class="type">cairo_format_t</span></a> format</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>);</pre>
+<p>Creates a device-dependent-bitmap surface not associated with
+any particular existing surface or device context. The created
+bitmap will be uninitialized.</p>
+<div class="refsect3">
+<a name="cairo-win32-surface-create-with-ddb.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>hdc</p></td>
+<td class="parameter_description"><p>a DC compatible with the surface to create</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>format</p></td>
+<td class="parameter_description"><p>format of pixels in the surface to create</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>width</p></td>
+<td class="parameter_description"><p>width of the surface, in pixels</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>height</p></td>
+<td class="parameter_description"><p>height of the surface, in pixels</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="cairo-win32-surface-create-with-ddb.returns"></a><h4>Returns</h4>
+<p> the newly created surface</p>
+</div>
+<p class="since">Since: 1.4</p>
+</div>
+<hr>
+<div class="refsect2">
+<a name="cairo-win32-surface-create-with-format"></a><h3>cairo_win32_surface_create_with_format ()</h3>
+<pre class="programlisting"><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+cairo_win32_surface_create_with_format
+                               (<em class="parameter"><code><span class="type">HDC</span> hdc</code></em>,
+                                <em class="parameter"><code><a class="link" href="cairo-Image-Surfaces.html#cairo-format-t" title="enum cairo_format_t"><span class="type">cairo_format_t</span></a> format</code></em>);</pre>
+<p>Creates a cairo surface that targets the given DC.  The DC will be
+queried for its initial clip extents, and this will be used as the
+size of the cairo surface.</p>
+<p>Supported formats are:
+<a class="link" href="cairo-Image-Surfaces.html#CAIRO-FORMAT-ARGB32:CAPS"><code class="literal">CAIRO_FORMAT_ARGB32</code></a>
+<a class="link" href="cairo-Image-Surfaces.html#CAIRO-FORMAT-RGB24:CAPS"><code class="literal">CAIRO_FORMAT_RGB24</code></a></p>
+<p>Note: <em class="parameter"><code>format</code></em>
+ only tells cairo how to draw on the surface, not what
+the format of the surface is. Namely, cairo does not (and cannot)
+check that <em class="parameter"><code>hdc</code></em>
+ actually supports alpha-transparency.</p>
+<div class="refsect3">
+<a name="cairo-win32-surface-create-with-format.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>hdc</p></td>
+<td class="parameter_description"><p>the DC to create a surface for</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>format</p></td>
+<td class="parameter_description"><p>format of pixels in the surface to create</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="cairo-win32-surface-create-with-format.returns"></a><h4>Returns</h4>
+<p> the newly created surface, NULL on failure</p>
+</div>
+<p class="since">Since: 1.14</p>
+</div>
+<hr>
+<div class="refsect2">
+<a name="cairo-win32-printing-surface-create"></a><h3>cairo_win32_printing_surface_create ()</h3>
+<pre class="programlisting"><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+cairo_win32_printing_surface_create (<em class="parameter"><code><span class="type">HDC</span> hdc</code></em>);</pre>
+<p>Creates a cairo surface that targets the given DC.  The DC will be
+queried for its initial clip extents, and this will be used as the
+size of the cairo surface.  The DC should be a printing DC;
+antialiasing will be ignored, and GDI will be used as much as
+possible to draw to the surface.</p>
+<p>The returned surface will be wrapped using the paginated surface to
+provide correct complex rendering behaviour; <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-show-page" title="cairo_surface_show_page ()"><code class="function">cairo_surface_show_page()</code></a> and
+associated methods must be used for correct output.</p>
+<div class="refsect3">
+<a name="cairo-win32-printing-surface-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>hdc</p></td>
+<td class="parameter_description"><p>the DC to create a surface for</p></td>
+<td class="parameter_annotations"> </td>
+</tr></tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="cairo-win32-printing-surface-create.returns"></a><h4>Returns</h4>
+<p> the newly created surface</p>
+</div>
+<p class="since">Since: 1.6</p>
+</div>
+<hr>
+<div class="refsect2">
+<a name="cairo-win32-surface-get-dc"></a><h3>cairo_win32_surface_get_dc ()</h3>
+<pre class="programlisting"><span class="returnvalue">HDC</span>
+cairo_win32_surface_get_dc (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>);</pre>
+<p>Returns the HDC associated with this surface, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if none.
+Also returns <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the surface is not a win32 surface.</p>
+<p>A call to <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-flush" title="cairo_surface_flush ()"><code class="function">cairo_surface_flush()</code></a> is required before using the HDC to
+ensure that all pending drawing operations are finished and to
+restore any temporary modification cairo has made to its state. A
+call to <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-mark-dirty" title="cairo_surface_mark_dirty ()"><code class="function">cairo_surface_mark_dirty()</code></a> is required after the state or
+the content of the HDC has been modified.</p>
+<div class="refsect3">
+<a name="cairo-win32-surface-get-dc.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>surface</p></td>
+<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a></p></td>
+<td class="parameter_annotations"> </td>
+</tr></tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="cairo-win32-surface-get-dc.returns"></a><h4>Returns</h4>
+<p> HDC or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if no HDC available.</p>
+</div>
+<p class="since">Since: 1.2</p>
+</div>
+<hr>
+<div class="refsect2">
+<a name="cairo-win32-surface-get-image"></a><h3>cairo_win32_surface_get_image ()</h3>
+<pre class="programlisting"><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
+cairo_win32_surface_get_image (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>);</pre>
+<p>Returns a <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> image surface that refers to the same bits
+as the DIB of the Win32 surface.  If the passed-in win32 surface
+is not a DIB surface, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is returned.</p>
+<div class="refsect3">
+<a name="cairo-win32-surface-get-image.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>surface</p></td>
+<td class="parameter_description"><p>a <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a></p></td>
+<td class="parameter_annotations"> </td>
+</tr></tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="cairo-win32-surface-get-image.returns"></a><h4>Returns</h4>
+<p> a <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> (owned by the win32 <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a>),
+or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the win32 surface is not a DIB.</p>
+</div>
+<p class="since">Since: 1.4</p>
+</div>
+</div>
+<div class="refsect1">
+<a name="cairo-Win32-Surfaces.other_details"></a><h2>Types and Values</h2>
+<div class="refsect2">
+<a name="CAIRO-HAS-WIN32-SURFACE:CAPS"></a><h3>CAIRO_HAS_WIN32_SURFACE</h3>
+<pre class="programlisting">#define CAIRO_HAS_WIN32_SURFACE 1
+</pre>
+<p>Defined if the Microsoft Windows surface backend is available.
+This macro can be used to conditionally compile backend-specific code.</p>
+<p class="since">Since: 1.0</p>
+</div>
+</div>
+<div class="refsect1">
+<a name="cairo-Win32-Surfaces.see-also"></a><h2>See Also</h2>
+<p><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a></p>
+</div>
+</div>
+<div class="footer">
+<hr>Generated by GTK-Doc V1.27</div>
+</body>
+</html>
+\ No newline at end of file
author	sanine <sanine.not@pm.me>	2022-10-12 12:03:23 -0500
committer	sanine <sanine.not@pm.me>	2022-10-12 12:03:23 -0500
commit	530ffd0b7d3c39757b20f00716e486b5caf89aff (patch)
tree	76b35fdf57317038acf6b828871f6ae25fce2ebe /libs/cairo-1.16.0/doc/public/html/cairo-Win32-Surfaces.html
parent	3dbe9332e47c143a237db12440f134caebd1cfbe (diff)