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| <h2><span class="refentrytitle"><a name="GAppInfoMonitor.top_of_page"></a>GAppInfoMonitor</span></h2> |
| <p>GAppInfoMonitor — Monitor application information for changes</p> |
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| <div class="refsect1"> |
| <a name="GAppInfoMonitor.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"> |
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| <tbody><tr> |
| <td class="function_type"> |
| <a class="link" href="GAppInfoMonitor.html" title="GAppInfoMonitor"><span class="returnvalue">GAppInfoMonitor</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="GAppInfoMonitor.html#g-app-info-monitor-get" title="g_app_info_monitor_get ()">g_app_info_monitor_get</a> <span class="c_punctuation">()</span> |
| </td> |
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| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="GAppInfoMonitor.signals"></a><h2>Signals</h2> |
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| <col width="300px" class="signals_name"> |
| <col width="200px" class="signals_flags"> |
| </colgroup> |
| <tbody><tr> |
| <td class="signal_type"><span class="returnvalue">void</span></td> |
| <td class="signal_name"><a class="link" href="GAppInfoMonitor.html#GAppInfoMonitor-changed" title="The “changed” signal">changed</a></td> |
| <td class="signal_flags"><a href="../gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS">Run First</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="GAppInfoMonitor.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="screen"> <a href="../gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> |
| <span class="lineart">╰──</span> GAppInfoMonitor |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="GAppInfoMonitor.description"></a><h2>Description</h2> |
| <p><a class="link" href="GAppInfoMonitor.html" title="GAppInfoMonitor"><span class="type">GAppInfoMonitor</span></a> is a very simple object used for monitoring the app |
| info database for changes (ie: newly installed or removed |
| applications).</p> |
| <p>Call <a class="link" href="GAppInfoMonitor.html#g-app-info-monitor-get" title="g_app_info_monitor_get ()"><code class="function">g_app_info_monitor_get()</code></a> to get a <a class="link" href="GAppInfoMonitor.html" title="GAppInfoMonitor"><span class="type">GAppInfoMonitor</span></a> and connect |
| to the "changed" signal.</p> |
| <p>In the usual case, applications should try to make note of the change |
| (doing things like invalidating caches) but not act on it. In |
| particular, applications should avoid making calls to <a class="link" href="GAppInfo.html" title="GAppInfo"><span class="type">GAppInfo</span></a> APIs |
| in response to the change signal, deferring these until the time that |
| the data is actually required. The exception to this case is when |
| application information is actually being displayed on the screen |
| (eg: during a search or when the list of all applications is shown). |
| The reason for this is that changes to the list of installed |
| applications often come in groups (like during system updates) and |
| rescanning the list on every change is pointless and expensive.</p> |
| </div> |
| <div class="refsect1"> |
| <a name="GAppInfoMonitor.functions_details"></a><h2>Functions</h2> |
| <div class="refsect2"> |
| <a name="g-app-info-monitor-get"></a><h3>g_app_info_monitor_get ()</h3> |
| <pre class="programlisting"><a class="link" href="GAppInfoMonitor.html" title="GAppInfoMonitor"><span class="returnvalue">GAppInfoMonitor</span></a> * |
| g_app_info_monitor_get (<em class="parameter"><code><span class="type">void</span></code></em>);</pre> |
| <p>Gets the <a class="link" href="GAppInfoMonitor.html" title="GAppInfoMonitor"><span class="type">GAppInfoMonitor</span></a> for the current thread-default main |
| context.</p> |
| <p>The <a class="link" href="GAppInfoMonitor.html" title="GAppInfoMonitor"><span class="type">GAppInfoMonitor</span></a> will emit a "changed" signal in the |
| thread-default main context whenever the list of installed |
| applications (as reported by <a class="link" href="GAppInfo.html#g-app-info-get-all" title="g_app_info_get_all ()"><code class="function">g_app_info_get_all()</code></a>) may have changed.</p> |
| <p>You must only call <a href="../gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a> on the return value from under |
| the same main context as you created it.</p> |
| <div class="refsect3"> |
| <a name="g-app-info-monitor-get.returns"></a><h4>Returns</h4> |
| <p> a reference to a <a class="link" href="GAppInfoMonitor.html" title="GAppInfoMonitor"><span class="type">GAppInfoMonitor</span></a>. </p> |
| <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p> |
| </div> |
| <p class="since">Since: <a class="link" href="api-index-2-40.html#api-index-2.40">2.40</a></p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="GAppInfoMonitor.other_details"></a><h2>Types and Values</h2> |
| </div> |
| <div class="refsect1"> |
| <a name="GAppInfoMonitor.signal-details"></a><h2>Signal Details</h2> |
| <div class="refsect2"> |
| <a name="GAppInfoMonitor-changed"></a><h3>The <code class="literal">“changed”</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| user_function (<a class="link" href="GAppInfoMonitor.html" title="GAppInfoMonitor"><span class="type">GAppInfoMonitor</span></a> *arg0, |
| <a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data)</pre> |
| <p>Signal emitted when the app info database for changes (ie: newly installed |
| or removed applications).</p> |
| <div class="refsect3"> |
| <a name="GAppInfoMonitor-changed.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>user_data</p></td> |
| <td class="parameter_description"><p>user data set when the signal handler was connected.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <p>Flags: <a href="../gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS">Run First</a></p> |
| </div> |
| </div> |
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