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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>cairomm: Cairo::RefPtr< T_CppObject > Class Template Reference</title>
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<h1>Cairo::RefPtr< T_CppObject > Class Template Reference</h1> </div>
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<p>RefPtr<> is a reference-counting shared smartpointer. <a href="#_details">More...</a></p>
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Inheritance diagram for Cairo::RefPtr< T_CppObject >:</div>
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<p><a href="classCairo_1_1RefPtr-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#aff19258db23434b3d41db0488b9249ea">RefPtr</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Default constructor. <a href="#aff19258db23434b3d41db0488b9249ea"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a227899cc9f00a7f4fce1f14cf73249d2">~RefPtr</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor - decrements reference count. <a href="#a227899cc9f00a7f4fce1f14cf73249d2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a15f8fd5fdb043ef974e8f56b2fcc3d67">RefPtr</a> (T_CppObject* pCppObject)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">For use only in the internal implementation of cairomm, gtkmm, etc. <a href="#a15f8fd5fdb043ef974e8f56b2fcc3d67"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#acb129373ab925b608bb542edc4a35e07">RefPtr</a> (T_CppObject* pCppObject, int* refcount)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">For use only in the internal implementation of sharedptr. <a href="#acb129373ab925b608bb542edc4a35e07"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a2abb53dbe20af15dcfb9903df9c336d5">RefPtr</a> (const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& src)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Copy constructor. <a href="#a2abb53dbe20af15dcfb9903df9c336d5"></a><br/></td></tr>
<tr><td class="memTemplParams" colspan="2">template<class T_CastFrom > </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top"> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a9f908e85eb371b62739fc04df304ab0e">RefPtr</a> (const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CastFrom >& src)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Copy constructor (from different, but castable type). <a href="#a9f908e85eb371b62739fc04df304ab0e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a52edce24b7b132ba4ff2f8ef0571bb46">swap</a> (<a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& other)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Swap the contents of two RefPtr<>. <a href="#a52edce24b7b132ba4ff2f8ef0571bb46"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#af02d3fb424f50e0f0ed1443709d38c5e">operator=</a> (const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& src)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Copy from another <a class="el" href="classCairo_1_1RefPtr.html" title="RefPtr<> is a reference-counting shared smartpointer.">RefPtr</a>: <a href="#af02d3fb424f50e0f0ed1443709d38c5e"></a><br/></td></tr>
<tr><td class="memTemplParams" colspan="2">template<class T_CastFrom > </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#ac82b7f2edd6f88c60be74b12af8e717a">operator=</a> (const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CastFrom >& src)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Copy from different, but castable type). <a href="#ac82b7f2edd6f88c60be74b12af8e717a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a8270e1280138a5e2c1ec7775a05b9ded">operator==</a> (const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& src) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Tests whether the RefPtr<> point to the same underlying instance. <a href="#a8270e1280138a5e2c1ec7775a05b9ded"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a70e5c59dcd60f1fe8b0e2fb33d9bae31">operator!=</a> (const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& src) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">See <a class="el" href="classCairo_1_1RefPtr.html#a8270e1280138a5e2c1ec7775a05b9ded" title="Tests whether the RefPtr<> point to the same underlying instance.">operator==()</a>. <a href="#a70e5c59dcd60f1fe8b0e2fb33d9bae31"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">T_CppObject* </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#ae46ca4c9c90e3dd6a01e2d06a9b7504d">operator-></a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Dereferencing. <a href="#ae46ca4c9c90e3dd6a01e2d06a9b7504d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a391b39a970de38580e3dc074b08f225f">operator bool</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Test whether the RefPtr<> points to any underlying instance. <a href="#a391b39a970de38580e3dc074b08f225f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a9c00d0d5e9a924520413869bcf162d2a">clear</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Set underlying instance to 0, decrementing reference count of existing instance appropriately. <a href="#a9c00d0d5e9a924520413869bcf162d2a"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr><td class="memTemplParams" colspan="2">template<class T_CastFrom > </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a6858cff2dc6fbe3b44cad59589d73628">cast_dynamic</a> (const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CastFrom >& src)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Dynamic cast to derived class. <a href="#a6858cff2dc6fbe3b44cad59589d73628"></a><br/></td></tr>
<tr><td class="memTemplParams" colspan="2">template<class T_CastFrom > </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#ad94b14307bcb276fa9fa2ea69bb57e43">cast_static</a> (const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CastFrom >& src)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Static cast to derived class. <a href="#ad94b14307bcb276fa9fa2ea69bb57e43"></a><br/></td></tr>
<tr><td class="memTemplParams" colspan="2">template<class T_CastFrom > </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classCairo_1_1RefPtr.html#a95662b0f276cecb068bb6027f34e3b9b">cast_const</a> (const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CastFrom >& src)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Cast to non-const. <a href="#a95662b0f276cecb068bb6027f34e3b9b"></a><br/></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<div class="textblock"><h3>template<class T_CppObject><br/>
class Cairo::RefPtr< T_CppObject ></h3>
<p>RefPtr<> is a reference-counting shared smartpointer. </p>
<p>Reference counting means that a shared reference count is incremented each time a <a class="el" href="classCairo_1_1RefPtr.html" title="RefPtr<> is a reference-counting shared smartpointer.">RefPtr</a> is copied, and decremented each time a <a class="el" href="classCairo_1_1RefPtr.html" title="RefPtr<> is a reference-counting shared smartpointer.">RefPtr</a> is destroyed, for instance when it leaves its scope. When the reference count reaches zero, the contained object is deleted</p>
<p>cairomm uses <a class="el" href="classCairo_1_1RefPtr.html" title="RefPtr<> is a reference-counting shared smartpointer.">RefPtr</a> so that you don't need to remember to delete the object explicitly, or know when a method expects you to delete the object that it returns, and to prevent any need to manually reference and unreference() cairo objects. </p>
<dl><dt><b>Examples: </b></dt><dd>
<p><a class="el" href="image-surface_8cc-example.html#_a0">image-surface.cc</a>, <a class="el" href="pdf-surface_8cc-example.html#_a1">pdf-surface.cc</a>, <a class="el" href="ps-surface_8cc-example.html#_a1">ps-surface.cc</a>, <a class="el" href="svg-surface_8cc-example.html#_a1">svg-surface.cc</a>, <a class="el" href="toy-text_8cc-example.html#_a0">toy-text.cc</a>, and <a class="el" href="user-font_8cc-example.html#_a0">user-font.cc</a>.</p>
</dd>
</dl></div><hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="aff19258db23434b3d41db0488b9249ea"></a><!-- doxytag: member="Cairo::RefPtr::RefPtr" ref="aff19258db23434b3d41db0488b9249ea" args="()" -->
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template <class T_CppObject> </div>
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<td class="memname"><a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::<a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a> </td>
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<p>Default constructor. </p>
<p>Afterwards it will be null and use of -> will cause a segmentation fault. </p>
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<a class="anchor" id="a227899cc9f00a7f4fce1f14cf73249d2"></a><!-- doxytag: member="Cairo::RefPtr::~RefPtr" ref="a227899cc9f00a7f4fce1f14cf73249d2" args="()" -->
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<p>Destructor - decrements reference count. </p>
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<a class="anchor" id="a15f8fd5fdb043ef974e8f56b2fcc3d67"></a><!-- doxytag: member="Cairo::RefPtr::RefPtr" ref="a15f8fd5fdb043ef974e8f56b2fcc3d67" args="(T_CppObject *pCppObject)" -->
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<td>(</td>
<td class="paramtype">T_CppObject * </td>
<td class="paramname"><em>pCppObject</em></td><td>)</td>
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<p>For use only in the internal implementation of cairomm, gtkmm, etc. </p>
<p>This takes ownership of <em>pCppObject</em>, so it will be deleted when the last <a class="el" href="classCairo_1_1RefPtr.html" title="RefPtr<> is a reference-counting shared smartpointer.">RefPtr</a> is deleted, for instance when it goes out of scope.</p>
<p>This assumes that <em>pCppObject</em> already has a starting reference for its underlying cairo object, so that destruction of <em></em> will cause a corresponding unreference of its underlying cairo object. For instance, a cairo_*_create() function usually provides a starting reference, but a cairo_*_get_*() function requires the caller to manually reference the returned object. In this case, you should call reference() on <em>pCppObject</em> before passing it to this constructor. </p>
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<p>For use only in the internal implementation of sharedptr. </p>
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template <class T_CppObject> </div>
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<td class="memname"><a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::<a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a> </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& </td>
<td class="paramname"><em>src</em></td><td>)</td>
<td><code> [inline]</code></td>
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<p>Copy constructor. </p>
<p>This increments the shared reference count. </p>
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<a class="anchor" id="a9f908e85eb371b62739fc04df304ab0e"></a><!-- doxytag: member="Cairo::RefPtr::RefPtr" ref="a9f908e85eb371b62739fc04df304ab0e" args="(const RefPtr< T_CastFrom > &src)" -->
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template <class T_CppObject> </div>
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<td class="memname"><a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::<a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a> </td>
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<td class="paramtype">const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CastFrom >& </td>
<td class="paramname"><em>src</em></td><td>)</td>
<td><code> [inline]</code></td>
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<p>Copy constructor (from different, but castable type). </p>
<p>Increments the reference count. </p>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a95662b0f276cecb068bb6027f34e3b9b"></a><!-- doxytag: member="Cairo::RefPtr::cast_const" ref="a95662b0f276cecb068bb6027f34e3b9b" args="(const RefPtr< T_CastFrom > &src)" -->
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template <class T_CppObject> </div>
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<td class="memname">static <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a><T_CppObject> <a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::cast_const </td>
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<td class="paramtype">const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CastFrom >& </td>
<td class="paramname"><em>src</em></td><td>)</td>
<td><code> [inline, static]</code></td>
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<p>Cast to non-const. </p>
<p>The <a class="el" href="classCairo_1_1RefPtr.html" title="RefPtr<> is a reference-counting shared smartpointer.">RefPtr</a> can't be cast with the usual notation so instead you can use </p>
<div class="fragment"><pre class="fragment"> ptr_unconst = <a class="code" href="classCairo_1_1RefPtr.html#a95662b0f276cecb068bb6027f34e3b9b" title="Cast to non-const.">RefPtr<UnConstType>::cast_const</a>(ptr_const);
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<td class="memname">static <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a><T_CppObject> <a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::cast_dynamic </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CastFrom >& </td>
<td class="paramname"><em>src</em></td><td>)</td>
<td><code> [inline, static]</code></td>
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<p>Dynamic cast to derived class. </p>
<p>The <a class="el" href="classCairo_1_1RefPtr.html" title="RefPtr<> is a reference-counting shared smartpointer.">RefPtr</a> can't be cast with the usual notation so instead you can use </p>
<div class="fragment"><pre class="fragment"> ptr_derived = <a class="code" href="classCairo_1_1RefPtr.html#a6858cff2dc6fbe3b44cad59589d73628" title="Dynamic cast to derived class.">RefPtr<Derived>::cast_dynamic</a>(ptr_base);
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template <class T_CppObject> </div>
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<td class="memname">static <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a><T_CppObject> <a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::cast_static </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CastFrom >& </td>
<td class="paramname"><em>src</em></td><td>)</td>
<td><code> [inline, static]</code></td>
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<p>Static cast to derived class. </p>
<p>Like the dynamic cast; the notation is </p>
<div class="fragment"><pre class="fragment"> ptr_derived = <a class="code" href="classCairo_1_1RefPtr.html#ad94b14307bcb276fa9fa2ea69bb57e43" title="Static cast to derived class.">RefPtr<Derived>::cast_static</a>(ptr_base);
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<td class="memname">void <a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::clear </td>
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<p>Set underlying instance to 0, decrementing reference count of existing instance appropriately. </p>
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<td class="memname"><a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::operator bool </td>
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<td class="paramname"></td><td>)</td>
<td> const<code> [inline]</code></td>
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<p>Test whether the RefPtr<> points to any underlying instance. </p>
<p>Mimics usage of ordinary pointers: </p>
<div class="fragment"><pre class="fragment"> <span class="keywordflow">if</span> (ptr)
do_something();
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<td class="memname">bool <a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::<a class="elRef" doxygen="libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01176.html#gac4373547895ec9df9035719b38a2621a">operator!</a>= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& </td>
<td class="paramname"><em>src</em></td><td>)</td>
<td> const<code> [inline]</code></td>
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<p>See <a class="el" href="classCairo_1_1RefPtr.html#a8270e1280138a5e2c1ec7775a05b9ded" title="Tests whether the RefPtr<> point to the same underlying instance.">operator==()</a>. </p>
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<td class="memname">T_CppObject* <a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::operator-> </td>
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<td class="paramname"></td><td>)</td>
<td> const<code> [inline]</code></td>
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<p>Dereferencing. </p>
<p>Use the methods of the underlying instance like so: <code>refptr->memberfun()</code>. </p>
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<a class="anchor" id="af02d3fb424f50e0f0ed1443709d38c5e"></a><!-- doxytag: member="Cairo::RefPtr::operator=" ref="af02d3fb424f50e0f0ed1443709d38c5e" args="(const RefPtr< T_CppObject > &src)" -->
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<td class="memname"><a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a><T_CppObject>& <a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::operator= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& </td>
<td class="paramname"><em>src</em></td><td>)</td>
<td><code> [inline]</code></td>
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<p>Copy from another <a class="el" href="classCairo_1_1RefPtr.html" title="RefPtr<> is a reference-counting shared smartpointer.">RefPtr</a>: </p>
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<a class="anchor" id="ac82b7f2edd6f88c60be74b12af8e717a"></a><!-- doxytag: member="Cairo::RefPtr::operator=" ref="ac82b7f2edd6f88c60be74b12af8e717a" args="(const RefPtr< T_CastFrom > &src)" -->
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template <class T_CppObject> </div>
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template <class T_CastFrom > </div>
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<td class="memname"><a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a><T_CppObject>& <a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::operator= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CastFrom >& </td>
<td class="paramname"><em>src</em></td><td>)</td>
<td><code> [inline]</code></td>
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<p>Copy from different, but castable type). </p>
<p>Increments the reference count. </p>
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<a class="anchor" id="a8270e1280138a5e2c1ec7775a05b9ded"></a><!-- doxytag: member="Cairo::RefPtr::operator==" ref="a8270e1280138a5e2c1ec7775a05b9ded" args="(const RefPtr< T_CppObject > &src) const " -->
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<td class="memname">bool <a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::operator== </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& </td>
<td class="paramname"><em>src</em></td><td>)</td>
<td> const<code> [inline]</code></td>
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<p>Tests whether the RefPtr<> point to the same underlying instance. </p>
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<a class="anchor" id="a52edce24b7b132ba4ff2f8ef0571bb46"></a><!-- doxytag: member="Cairo::RefPtr::swap" ref="a52edce24b7b132ba4ff2f8ef0571bb46" args="(RefPtr< T_CppObject > &other)" -->
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<td class="memname">void <a class="el" href="classCairo_1_1RefPtr.html">Cairo::RefPtr</a>< T_CppObject >::swap </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classCairo_1_1RefPtr.html">RefPtr</a>< T_CppObject >& </td>
<td class="paramname"><em>other</em></td><td>)</td>
<td><code> [inline]</code></td>
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<p>Swap the contents of two RefPtr<>. </p>
<p>This method swaps the internal pointers to T_CppObject. This can be done safely without involving a reference/unreference cycle and is therefore highly efficient. </p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>cairomm/refptr.h</li>
</ul>
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