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<div class="navpath"><a class="el" href="namespaceGdk.html">Gdk</a>::<a class="el" href="classGdk_1_1PixbufAnimationIter.html">PixbufAnimationIter</a>
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<h1>Gdk::PixbufAnimationIter Class Reference</h1><!-- doxytag: class="Gdk::PixbufAnimationIter" --><!-- doxytag: inherits="Glib::Object" -->
<p>An iterator which points to a certain position in a <a class="el" href="classGdk_1_1PixbufAnimation.html" title="The gdk-pixbuf library provides a simple mechanism to load and represent animations...">PixbufAnimation</a>. <a href="#_details">More...</a></p>
<p>Inherits <a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/classGlib_1_1Object.html">Glib::Object</a>.</p>
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Collaboration diagram for Gdk::PixbufAnimationIter:</div>
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<area shape="rect" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/classGlib_1_1Object.html" title="Glib::Object" alt="" coords="44,160,135,189"/><area shape="rect" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/classGlib_1_1ObjectBase.html" title="Glib::ObjectBase" alt="" coords="29,83,149,112"/><area shape="rect" doxygen="libsigc++-2.0.tag:http://library.gnome.org/devel/libsigc++/unstable/" href="http://library.gnome.org/devel/libsigc++/unstable/structsigc_1_1trackable.html" title="sigc::trackable" alt="" coords="36,5,143,35"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="classGdk_1_1PixbufAnimationIter-members.html">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#abb04812c40c3cde3adae527f91e992b4">~PixbufAnimationIter</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GdkPixbufAnimationIter* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#a5aac29041dd100a119b8aa703dbafe3f">gobj</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Provides access to the underlying C GObject. <a href="#a5aac29041dd100a119b8aa703dbafe3f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const GdkPixbufAnimationIter* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#a8d6407acb0d49bc5ff6ed415d93b536b">gobj</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Provides access to the underlying C GObject. <a href="#a8d6407acb0d49bc5ff6ed415d93b536b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GdkPixbufAnimationIter* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#ae2e23368fa026c6deeaacd4168074a44">gobj_copy</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. <a href="#ae2e23368fa026c6deeaacd4168074a44"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#a59be27954e4c177236c5bebfa6c84602">get_delay_time</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Gets the number of milliseconds the current pixbuf should be displayed, or -1 if the current pixbuf should be displayed forever. <a href="#a59be27954e4c177236c5bebfa6c84602"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/classGlib_1_1RefPtr.html">Glib::RefPtr</a>< <a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#a66d583297b87ac3f2b1424526afe962c">get_pixbuf</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Gets the current pixbuf which should be displayed; the pixbuf will be the same size as the animation itself (<a class="el" href="classGdk_1_1Pixbuf.html#aa465be4bf65b9fedf471848c21bfab98">Gdk::Pixbuf::get_width()</a>, <a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a>:get_height()). <a href="#a66d583297b87ac3f2b1424526afe962c"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/classGlib_1_1RefPtr.html">Glib::RefPtr</a>< const <a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#a2b0c8610e86dd96f49425d48396797be">get_pixbuf</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Gets the current pixbuf which should be displayed; the pixbuf will be the same size as the animation itself (<a class="el" href="classGdk_1_1Pixbuf.html#aa465be4bf65b9fedf471848c21bfab98">Gdk::Pixbuf::get_width()</a>, <a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a>:get_height()). <a href="#a2b0c8610e86dd96f49425d48396797be"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#ad50a6088b03fb35fe65dea11debecd84">on_currently_loading_frame</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Used to determine how to respond to the area_updated signal on <a class="el" href="classGdk_1_1PixbufLoader.html">Gdk::PixbufLoader</a> when loading an animation. <a href="#ad50a6088b03fb35fe65dea11debecd84"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#ac4f9496b9197f968656760fa16218f25">advance</a> (const <a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/structGlib_1_1TimeVal.html">Glib::TimeVal</a>& current_time)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Possibly advances an animation to a new frame. <a href="#ac4f9496b9197f968656760fa16218f25"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#a1bd10ac0d757e79e1d0e4fda7778d0a0">advance</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Possibly advances an animation to a new frame. <a href="#a1bd10ac0d757e79e1d0e4fda7778d0a0"></a><br/></td></tr>
<tr><td colspan="2"><h2>Related Functions</h2></td></tr>
<tr><td colspan="2"><p>(Note that these are not member functions.) </p>
<br/><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/classGlib_1_1RefPtr.html">Glib::RefPtr</a><br class="typebreak"/>
< <a class="el" href="classGdk_1_1PixbufAnimationIter.html">Gdk::PixbufAnimationIter</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classGdk_1_1PixbufAnimationIter.html#a0c68bd7a2e248042af42c41d2aa11016">wrap</a> (GdkPixbufAnimationIter* object, bool take_copy=false)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A <a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/namespaceGlib.html#a671306f4a3a0cae5ab4d7a9d54886592">Glib::wrap()</a> method for this object. <a href="#a0c68bd7a2e248042af42c41d2aa11016"></a><br/></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>An iterator which points to a certain position in a <a class="el" href="classGdk_1_1PixbufAnimation.html" title="The gdk-pixbuf library provides a simple mechanism to load and represent animations...">PixbufAnimation</a>. </p>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="abb04812c40c3cde3adae527f91e992b4"></a><!-- doxytag: member="Gdk::PixbufAnimationIter::~PixbufAnimationIter" ref="abb04812c40c3cde3adae527f91e992b4" args="()" -->
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<td class="memname">virtual Gdk::PixbufAnimationIter::~PixbufAnimationIter </td>
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<td><code> [virtual]</code></td>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a1bd10ac0d757e79e1d0e4fda7778d0a0"></a><!-- doxytag: member="Gdk::PixbufAnimationIter::advance" ref="a1bd10ac0d757e79e1d0e4fda7778d0a0" args="()" -->
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<td class="memname">bool Gdk::PixbufAnimationIter::advance </td>
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<p>Possibly advances an animation to a new frame. </p>
<p>Chooses the frame based on the start time passed to <a class="el" href="classGdk_1_1PixbufAnimation.html#a7ad528dcc330239499e0c0f6010905b7">Gdk::PixbufAnimation::get_iter()</a>.</p>
<p>If this function returns false, there's no need to update the animation display, assuming the display had been rendered prior to advancing; if true, you need to call <a class="el" href="classGdk_1_1PixbufAnimationIter.html#a66d583297b87ac3f2b1424526afe962c" title="Gets the current pixbuf which should be displayed; the pixbuf will be the same size...">get_pixbuf()</a> and update the display with the new pixbuf.</p>
<dl class="since_2_14"><dt><b><a class="el" href="since_2_14.html#_since_2_14000007">Since gtkmm 2.14:</a></b></dt><dd></dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if the image may need updating. </dd></dl>
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<a class="anchor" id="ac4f9496b9197f968656760fa16218f25"></a><!-- doxytag: member="Gdk::PixbufAnimationIter::advance" ref="ac4f9496b9197f968656760fa16218f25" args="(const Glib::TimeVal &current_time)" -->
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<td class="memname">bool Gdk::PixbufAnimationIter::advance </td>
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<td class="paramtype">const <a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/structGlib_1_1TimeVal.html">Glib::TimeVal</a> & </td>
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<p>Possibly advances an animation to a new frame. </p>
<p>Chooses the frame based on the start time passed to <a class="el" href="classGdk_1_1PixbufAnimation.html#a7ad528dcc330239499e0c0f6010905b7">Gdk::PixbufAnimation::get_iter()</a>.</p>
<p><em>current_time</em> would normally come from Glib::get_current_time(), and must be greater than or equal to the time passed to <a class="el" href="classGdk_1_1PixbufAnimation.html#a7ad528dcc330239499e0c0f6010905b7">Gdk::PixbufAnimation::get_iter()</a>, and must increase or remain unchanged each time <a class="el" href="classGdk_1_1PixbufAnimationIter.html#a66d583297b87ac3f2b1424526afe962c" title="Gets the current pixbuf which should be displayed; the pixbuf will be the same size...">get_pixbuf()</a> is called. That is, you can't go backward in time; animations only play forward.</p>
<p>If using the method overload that takes no current_time parameter then the current time will be used. So you only need to explicitly pass <em>current_time</em> if you're doing something odd like playing the animation at double speed.</p>
<p>If this function returns <code>false</code>, there's no need to update the animation display, assuming the display had been rendered prior to advancing; if <code>true</code>, you need to call <a class="el" href="classGdk_1_1PixbufAnimationIter.html#a66d583297b87ac3f2b1424526afe962c" title="Gets the current pixbuf which should be displayed; the pixbuf will be the same size...">get_pixbuf()</a> and update the display with the new pixbuf.</p>
<dl class="since_2_14"><dt><b><a class="el" href="since_2_14.html#_since_2_14000006">Since gtkmm 2.14:</a></b></dt><dd></dd></dl>
<dl><dt><b>Parameters:</b></dt><dd>
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<dl class="return"><dt><b>Returns:</b></dt><dd><code>true</code> if the image may need updating. </dd></dl>
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<td class="memname">int Gdk::PixbufAnimationIter::get_delay_time </td>
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<p>Gets the number of milliseconds the current pixbuf should be displayed, or -1 if the current pixbuf should be displayed forever. </p>
<p>Glib::signal_timeout.connect() conveniently takes a timeout in milliseconds, so you can use a timeout to schedule the next update.</p>
<dl class="since_2_14"><dt><b><a class="el" href="since_2_14.html#_since_2_14000002">Since gtkmm 2.14:</a></b></dt><dd></dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>Delay time in milliseconds (thousandths of a second). </dd></dl>
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<a class="anchor" id="a2b0c8610e86dd96f49425d48396797be"></a><!-- doxytag: member="Gdk::PixbufAnimationIter::get_pixbuf" ref="a2b0c8610e86dd96f49425d48396797be" args="() const " -->
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<td class="memname"><a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/classGlib_1_1RefPtr.html">Glib::RefPtr</a><const <a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a>> Gdk::PixbufAnimationIter::get_pixbuf </td>
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<p>Gets the current pixbuf which should be displayed; the pixbuf will be the same size as the animation itself (<a class="el" href="classGdk_1_1Pixbuf.html#aa465be4bf65b9fedf471848c21bfab98">Gdk::Pixbuf::get_width()</a>, <a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a>:get_height()). </p>
<p>This pixbuf should be displayed for <a class="el" href="classGdk_1_1PixbufAnimationIter.html#a59be27954e4c177236c5bebfa6c84602" title="Gets the number of milliseconds the current pixbuf should be displayed, or -1 if...">get_delay_time()</a> milliseconds. The returned pixbuf will become invalid when the iterator advances to the next frame, which may happen anytime you call <a class="el" href="classGdk_1_1PixbufAnimationIter.html#a1bd10ac0d757e79e1d0e4fda7778d0a0" title="Possibly advances an animation to a new frame.">advance()</a>. Copy the pixbuf to keep it, with <a class="el" href="classGdk_1_1Pixbuf.html#aa29db4f8d4410dc74916b53d231a1fbd">Gdk::Pixbuf::copy()</a> as it may get recycled as you advance the iterator.</p>
<dl class="since_2_14"><dt><b><a class="el" href="since_2_14.html#_since_2_14000004">Since gtkmm 2.14:</a></b></dt><dd></dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>The pixbuf to be displayed. </dd></dl>
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<p>Gets the current pixbuf which should be displayed; the pixbuf will be the same size as the animation itself (<a class="el" href="classGdk_1_1Pixbuf.html#aa465be4bf65b9fedf471848c21bfab98">Gdk::Pixbuf::get_width()</a>, <a class="el" href="classGdk_1_1Pixbuf.html">Gdk::Pixbuf</a>:get_height()). </p>
<p>This pixbuf should be displayed for <a class="el" href="classGdk_1_1PixbufAnimationIter.html#a59be27954e4c177236c5bebfa6c84602" title="Gets the number of milliseconds the current pixbuf should be displayed, or -1 if...">get_delay_time()</a> milliseconds. The returned pixbuf will become invalid when the iterator advances to the next frame, which may happen anytime you call <a class="el" href="classGdk_1_1PixbufAnimationIter.html#a1bd10ac0d757e79e1d0e4fda7778d0a0" title="Possibly advances an animation to a new frame.">advance()</a>. Copy the pixbuf to keep it, with <a class="el" href="classGdk_1_1Pixbuf.html#aa29db4f8d4410dc74916b53d231a1fbd">Gdk::Pixbuf::copy()</a> as it may get recycled as you advance the iterator.</p>
<dl class="since_2_14"><dt><b><a class="el" href="since_2_14.html#_since_2_14000003">Since gtkmm 2.14:</a></b></dt><dd></dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>The pixbuf to be displayed. </dd></dl>
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<a class="anchor" id="a8d6407acb0d49bc5ff6ed415d93b536b"></a><!-- doxytag: member="Gdk::PixbufAnimationIter::gobj" ref="a8d6407acb0d49bc5ff6ed415d93b536b" args="() const " -->
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<td class="memname">const GdkPixbufAnimationIter* Gdk::PixbufAnimationIter::gobj </td>
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<p>Provides access to the underlying C GObject. </p>
<p>Reimplemented from <a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/classGlib_1_1ObjectBase.html#a778a94181132976bbfb0519793f3b32e">Glib::ObjectBase</a>.</p>
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<a class="anchor" id="a5aac29041dd100a119b8aa703dbafe3f"></a><!-- doxytag: member="Gdk::PixbufAnimationIter::gobj" ref="a5aac29041dd100a119b8aa703dbafe3f" args="()" -->
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<td class="memname">GdkPixbufAnimationIter* Gdk::PixbufAnimationIter::gobj </td>
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<p>Provides access to the underlying C GObject. </p>
<p>Reimplemented from <a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/classGlib_1_1ObjectBase.html#a4c6efc18be8cb9c56e58fc0bd20fafbe">Glib::ObjectBase</a>.</p>
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<a class="anchor" id="ae2e23368fa026c6deeaacd4168074a44"></a><!-- doxytag: member="Gdk::PixbufAnimationIter::gobj_copy" ref="ae2e23368fa026c6deeaacd4168074a44" args="()" -->
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<td class="memname">GdkPixbufAnimationIter* Gdk::PixbufAnimationIter::gobj_copy </td>
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<p>Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. </p>
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<a class="anchor" id="ad50a6088b03fb35fe65dea11debecd84"></a><!-- doxytag: member="Gdk::PixbufAnimationIter::on_currently_loading_frame" ref="ad50a6088b03fb35fe65dea11debecd84" args="() const " -->
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<p>Used to determine how to respond to the area_updated signal on <a class="el" href="classGdk_1_1PixbufLoader.html">Gdk::PixbufLoader</a> when loading an animation. </p>
<p>The area_updated signal is emitted for an area of the frame currently streaming in to the loader. So if you're on the currently loading frame, you need to redraw the screen for the updated area.</p>
<dl class="since_2_14"><dt><b><a class="el" href="since_2_14.html#_since_2_14000005">Since gtkmm 2.14:</a></b></dt><dd></dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd><code>true</code> if the frame we're on is partially loaded, or the last frame. </dd></dl>
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<hr/><h2>Friends And Related Function Documentation</h2>
<a class="anchor" id="a0c68bd7a2e248042af42c41d2aa11016"></a><!-- doxytag: member="Gdk::PixbufAnimationIter::wrap" ref="a0c68bd7a2e248042af42c41d2aa11016" args="(GdkPixbufAnimationIter *object, bool take_copy=false)" -->
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<td class="memname"><a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/classGlib_1_1RefPtr.html">Glib::RefPtr</a>< <a class="el" href="classGdk_1_1PixbufAnimationIter.html">Gdk::PixbufAnimationIter</a> > wrap </td>
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<td class="paramtype">GdkPixbufAnimationIter * </td>
<td class="paramname"> <em>object</em>, </td>
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<td>)</td>
<td></td><td></td><td><code> [related]</code></td>
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<p>A <a class="elRef" doxygen="glibmm-2.4.tag:http://library.gnome.org/devel/glibmm/unstable/" href="http://library.gnome.org/devel/glibmm/unstable/namespaceGlib.html#a671306f4a3a0cae5ab4d7a9d54886592">Glib::wrap()</a> method for this object. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>object</em> </td><td>The C instance. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>take_copy</em> </td><td>False if the result should take ownership of the C instance. True if it should take a new copy or ref. </td></tr>
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<dl class="return"><dt><b>Returns:</b></dt><dd>A C++ instance that wraps this C instance. </dd></dl>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>gdkmm/pixbufanimationiter.h</li>
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<hr size="1"/><address style="text-align: right;"><small>Generated on Tue May 4 13:21:44 2010 for gtkmm by 
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.1 </small></address>
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