glib-datasets.html

glid编写实例

<tbody>
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<td>
<span class="term"><em class="parameter"><code>dataset_location</code></em>&#160;:</span></td>
<td>the location identifying the dataset.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>key_id</code></em>&#160;:</span></td>
<td>the <a href="glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> ID identifying the data element.
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td>the data previously stored at <em class="parameter"><code>key_id</code></em>, or <code class="literal">NULL</code> if none.


</td>
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<div class="refsect2" lang="en">
<a name="id3196365"></a><h3>
<a name="g-dataset-set-data"></a>g_dataset_set_data()</h3>
<a class="indexterm" name="id3196376"></a><pre class="programlisting">#define     g_dataset_set_data(l, k, d)</pre>
<p>
Sets the data corresponding to the given string identifier.
</p>
<div class="variablelist"><table border="0">
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<span class="term"><em class="parameter"><code>l</code></em>&#160;:</span></td>
<td>the location identifying the dataset.
</td>
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<tr>
<td>
<span class="term"><em class="parameter"><code>k</code></em>&#160;:</span></td>
<td>the string to identify the data element.
</td>
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<td>
<span class="term"><em class="parameter"><code>d</code></em>&#160;:</span></td>
<td>the data element.


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<hr>
<div class="refsect2" lang="en">
<a name="id3196438"></a><h3>
<a name="g-dataset-set-data-full"></a>g_dataset_set_data_full()</h3>
<a class="indexterm" name="id3196449"></a><pre class="programlisting">#define     g_dataset_set_data_full(l, k, d, f)</pre>
<p>
Sets the data corresponding to the given string identifier, and the function
to call when the data element is destroyed.
</p>
<div class="variablelist"><table border="0">
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<td>
<span class="term"><em class="parameter"><code>l</code></em>&#160;:</span></td>
<td>the location identifying the dataset.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>k</code></em>&#160;:</span></td>
<td>the string to identify the data element.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>d</code></em>&#160;:</span></td>
<td>the data element.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>f</code></em>&#160;:</span></td>
<td>the function to call when the data element is removed. This
function will be called with the data element and can be used to free any
memory allocated for it.


</td>
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</tbody>
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<hr>
<div class="refsect2" lang="en">
<a name="id3196529"></a><h3>
<a name="g-dataset-get-data"></a>g_dataset_get_data()</h3>
<a class="indexterm" name="id3196540"></a><pre class="programlisting">#define     g_dataset_get_data(l, k)</pre>
<p>
Gets the data element corresponding to a string.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
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<tr>
<td>
<span class="term"><em class="parameter"><code>l</code></em>&#160;:</span></td>
<td>the location identifying the dataset.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>k</code></em>&#160;:</span></td>
<td>the string identifying the data element.
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td>the data element corresponding to the string, or <code class="literal">NULL</code> if it is not
found.


</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3196605"></a><h3>
<a name="g-dataset-remove-data"></a>g_dataset_remove_data()</h3>
<a class="indexterm" name="id3196616"></a><pre class="programlisting">#define     g_dataset_remove_data(l, k)</pre>
<p>
Removes a data element corresponding to a string.
Its destroy function is called if it has been set.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
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<td>
<span class="term"><em class="parameter"><code>l</code></em>&#160;:</span></td>
<td>the location identifying the dataset.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>k</code></em>&#160;:</span></td>
<td>the string identifying the data element.


</td>
</tr>
</tbody>
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</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3196666"></a><h3>
<a name="g-dataset-remove-no-notify"></a>g_dataset_remove_no_notify()</h3>
<a class="indexterm" name="id3196678"></a><pre class="programlisting">#define     g_dataset_remove_no_notify(l, k)</pre>
<p>
Removes an element, without calling its destroy notifier.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
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<td>
<span class="term"><em class="parameter"><code>l</code></em>&#160;:</span></td>
<td>the location identifying the dataset.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>k</code></em>&#160;:</span></td>
<td>the string identifying the data element.


</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3196727"></a><h3>
<a name="g-dataset-foreach"></a>g_dataset_foreach ()</h3>
<a class="indexterm" name="id3196738"></a><pre class="programlisting">void        g_dataset_foreach               (<a href="glib-Basic-Types.html#gconstpointer">gconstpointer</a> dataset_location,
                                             <a href="glib-Datasets.html#GDataForeachFunc">GDataForeachFunc</a> func,
                                             <a href="glib-Basic-Types.html#gpointer">gpointer</a> user_data);</pre>
<p>
Calls the given function for each data element which is associated with the
given location.
</p>
<div class="variablelist"><table border="0">
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<td>
<span class="term"><em class="parameter"><code>dataset_location</code></em>&#160;:</span></td>
<td>the location identifying the dataset.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>func</code></em>&#160;:</span></td>
<td>the function to call for each data element.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>user_data</code></em>&#160;:</span></td>
<td>user data to pass to the function.


</td>
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<hr>
<div class="refsect2" lang="en">
<a name="id3196831"></a><h3>
<a name="GDataForeachFunc"></a>GDataForeachFunc ()</h3>
<a class="indexterm" name="id3196841"></a><pre class="programlisting">void        (*GDataForeachFunc)             (<a href="glib-Quarks.html#GQuark">GQuark</a> key_id,
                                             <a href="glib-Basic-Types.html#gpointer">gpointer</a> data,
                                             <a href="glib-Basic-Types.html#gpointer">gpointer</a> user_data);</pre>
<p>
Specifies the type of function passed to <a href="glib-Datasets.html#g-dataset-foreach"><code class="function">g_dataset_foreach()</code></a>.
It is called with each <a href="glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> id and associated data element,
together with the <em class="parameter"><code>user_data</code></em> parameter supplied to <a href="glib-Datasets.html#g-dataset-foreach"><code class="function">g_dataset_foreach()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>key_id</code></em>&#160;:</span></td>
<td>the <a href="glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> id to identifying the data element.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>data</code></em>&#160;:</span></td>
<td>the data element.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>user_data</code></em>&#160;:</span></td>
<td>user data passed to <a href="glib-Datasets.html#g-dataset-foreach"><code class="function">g_dataset_foreach()</code></a>.


</td>
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</tbody>
</table></div>
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<hr>
<div class="refsect2" lang="en">
<a name="id3196987"></a><h3>
<a name="g-dataset-destroy"></a>g_dataset_destroy ()</h3>
<a class="indexterm" name="id3196998"></a><pre class="programlisting">void        g_dataset_destroy               (<a href="glib-Basic-Types.html#gconstpointer">gconstpointer</a> dataset_location);</pre>
<p>
Destroys the dataset, freeing all memory allocated, and calling any
destroy functions set for data elements.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td>
<span class="term"><em class="parameter"><code>dataset_location</code></em>&#160;:</span></td>
<td>the location identifying the dataset.


</td>
</tr></tbody>
</table></div>
</div>
</div>
</div>
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