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   &#160;<span id="projectnumber">1.8.20</span>
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<a href="#define-members">Defines</a>  </div>
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<div class="title">Utility macros</div>  </div>
<div class="ingroups"><a class="el" href="group__DBus.html">D-Bus low-level public API</a></div></div><!--header-->
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<p><a class="el" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to &quot;1&quot;.">TRUE</a>, <a class="el" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to &quot;0&quot;.">FALSE</a>, <a class="el" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>, and so on  
<a href="#details">More...</a></p>
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Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DBusMacros.html#ga875146b01015e9ced22b25d76d549ab2">DBUS_BEGIN_DECLS</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Macro used prior to declaring functions in the D-Bus header files.  <a href="#ga875146b01015e9ced22b25d76d549ab2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DBusMacros.html#gae4a9263a43f8220f6e1c0fd07cf6e59a">DBUS_END_DECLS</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Macro used after declaring functions in the D-Bus header files.  <a href="#gae4a9263a43f8220f6e1c0fd07cf6e59a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gaa8cecfc5c5c054d2875c03e77b7be15d"></a><!-- doxytag: member="DBusMacros::TRUE" ref="gaa8cecfc5c5c054d2875c03e77b7be15d" args="" -->
#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d">TRUE</a>&#160;&#160;&#160;1</td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Expands to "1". <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gaa93f0eb578d23995850d61f7d61c55c1"></a><!-- doxytag: member="DBusMacros::FALSE" ref="gaa93f0eb578d23995850d61f7d61c55c1" args="" -->
#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1">FALSE</a>&#160;&#160;&#160;0</td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Expands to "0". <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga070d2ce7b6bb7e5c05602aa8c308d0c4"></a><!-- doxytag: member="DBusMacros::NULL" ref="ga070d2ce7b6bb7e5c05602aa8c308d0c4" args="" -->
#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>&#160;&#160;&#160;((void*) 0)</td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">A null pointer, defined appropriately for C or C++. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DBusMacros.html#ga7b014fa99f6ef38c1aa5a9c02468e3a0">DBUS_DEPRECATED</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Tells the compiler to warn about a function or type if it's used.  <a href="#ga7b014fa99f6ef38c1aa5a9c02468e3a0"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DBusMacros.html#ga4fa4b760e4b3d14076981ad21407b5c8">_DBUS_GNUC_EXTENSION</a></td></tr>
<tr><td class="mdescLeft">&#160;</td><td class="mdescRight">Tells gcc not to warn about extensions to the C standard in the following expression, even if compiling with -pedantic.  <a href="#ga4fa4b760e4b3d14076981ad21407b5c8"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gab64386a75b748deb7e3bc41a417d5661"></a><!-- doxytag: member="DBusMacros::DBUS_EXPORT" ref="gab64386a75b748deb7e3bc41a417d5661" args="" -->
#define&#160;</td><td class="memItemRight" valign="bottom"><b>DBUS_EXPORT</b></td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<p><a class="el" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to &quot;1&quot;.">TRUE</a>, <a class="el" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to &quot;0&quot;.">FALSE</a>, <a class="el" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>, and so on </p>
<p>Utility macros. </p>
<hr/><h2>Define Documentation</h2>
<a class="anchor" id="ga4fa4b760e4b3d14076981ad21407b5c8"></a><!-- doxytag: member="dbus&#45;macros.h::_DBUS_GNUC_EXTENSION" ref="ga4fa4b760e4b3d14076981ad21407b5c8" args="" -->
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          <td class="memname">#define <a class="el" href="group__DBusMacros.html#ga4fa4b760e4b3d14076981ad21407b5c8">_DBUS_GNUC_EXTENSION</a></td>
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<p>Tells gcc not to warn about extensions to the C standard in the following expression, even if compiling with -pedantic. </p>
<p>Do not use this macro in your own code; please consider it to be internal to libdbus. </p>

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<a class="anchor" id="ga875146b01015e9ced22b25d76d549ab2"></a><!-- doxytag: member="dbus&#45;macros.h::DBUS_BEGIN_DECLS" ref="ga875146b01015e9ced22b25d76d549ab2" args="" -->
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          <td class="memname">#define <a class="el" href="group__DBusMacros.html#ga875146b01015e9ced22b25d76d549ab2">DBUS_BEGIN_DECLS</a></td>
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<p>Macro used prior to declaring functions in the D-Bus header files. </p>
<p>Expands to "extern "C"" when using a C++ compiler, and expands to nothing when using a C compiler.</p>
<p>Please don't use this in your own code, consider it D-Bus internal. </p>

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<a class="anchor" id="ga7b014fa99f6ef38c1aa5a9c02468e3a0"></a><!-- doxytag: member="dbus&#45;macros.h::DBUS_DEPRECATED" ref="ga7b014fa99f6ef38c1aa5a9c02468e3a0" args="" -->
<div class="memitem">
<div class="memproto">
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          <td class="memname">#define <a class="el" href="group__DBusMacros.html#ga7b014fa99f6ef38c1aa5a9c02468e3a0">DBUS_DEPRECATED</a></td>
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<div class="memdoc">

<p>Tells the compiler to warn about a function or type if it's used. </p>
<p>Code marked in this way should also be enclosed in </p>
<div class="fragment"><pre class="fragment"><span class="preprocessor"> #ifndef DBUS_DISABLE_DEPRECATED</span>
<span class="preprocessor"></span>  deprecated stuff here
<span class="preprocessor"> #endif</span>
</pre></div><p>Please don't use this in your own code, consider it D-Bus internal. </p>

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<a class="anchor" id="gae4a9263a43f8220f6e1c0fd07cf6e59a"></a><!-- doxytag: member="dbus&#45;macros.h::DBUS_END_DECLS" ref="gae4a9263a43f8220f6e1c0fd07cf6e59a" args="" -->
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          <td class="memname">#define <a class="el" href="group__DBusMacros.html#gae4a9263a43f8220f6e1c0fd07cf6e59a">DBUS_END_DECLS</a></td>
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<div class="memdoc">

<p>Macro used after declaring functions in the D-Bus header files. </p>
<p>Expands to "}" when using a C++ compiler, and expands to nothing when using a C compiler.</p>
<p>Please don't use this in your own code, consider it D-Bus internal. </p>

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