New upstream version 3.23.0
This commit is contained in:
Iain Lane
@ -3,12 +3,12 @@
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>GtkContainer: GTK+ 3 Reference Manual</title>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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@ -537,119 +537,59 @@ every widget request at least enough space to display all of its content at all
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<p>When <a class="link" href="GtkWidget.html#gtk-widget-get-preferred-height" title="gtk_widget_get_preferred_height ()"><code class="function">gtk_widget_get_preferred_height()</code></a> is called on a container that is height-for-width,
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the container must return the height for its minimum width. This is easily achieved by
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simply calling the reverse apis implemented for itself as follows:</p>
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<div class="informalexample">
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<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
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<tbody>
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<tr>
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<td class="listing_lines" align="right"><pre>1
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27</pre></td>
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<td class="listing_code"><pre class="programlisting"><span class="keyword">static</span><span class="normal"> </span><span class="type">void</span>
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<span class="function">foo_container_get_preferred_height</span><span class="normal"> </span><span class="symbol">(</span><span class="usertype">GtkWidget</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">widget</span><span class="symbol">,</span>
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<span class="normal"> </span><span class="usertype">gint</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">min_height</span><span class="symbol">,</span>
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<span class="normal"> </span><span class="usertype">gint</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">nat_height</span><span class="symbol">)</span>
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<span class="cbracket">{</span>
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<span class="normal"> </span><span class="keyword">if</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">i_am_in_height_for_width_mode</span><span class="symbol">)</span>
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<span class="normal"> </span><span class="cbracket">{</span>
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<span class="normal"> </span><span class="usertype">gint</span><span class="normal"> min_width</span><span class="symbol">;</span>
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<span class="normal"> </span><span class="function">GTK_WIDGET_GET_CLASS</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">widget</span><span class="symbol">)-></span><span class="function">get_preferred_width</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">widget</span><span class="symbol">,</span>
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<span class="normal"> </span><span class="symbol">&</span><span class="normal">min_width</span><span class="symbol">,</span>
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<span class="normal"> NULL</span><span class="symbol">);</span>
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<span class="normal"> </span><span class="function">GTK_WIDGET_GET_CLASS</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">widget</span><span class="symbol">)-></span><span class="normal">get_preferred_height_for_width</span>
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<span class="normal"> </span><span class="symbol">(</span><span class="normal">widget</span><span class="symbol">,</span>
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<span class="normal"> min_width</span><span class="symbol">,</span>
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<span class="normal"> min_height</span><span class="symbol">,</span>
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<span class="normal"> nat_height</span><span class="symbol">);</span>
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<span class="normal"> </span><span class="cbracket">}</span>
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<span class="normal"> </span><span class="keyword">else</span>
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<span class="normal"> </span><span class="cbracket">{</span>
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<span class="normal"> </span><span class="symbol">...</span><span class="normal"> many containers support both </span><span class="usertype">request</span><span class="normal"> modes</span><span class="symbol">,</span><span class="normal"> execute the</span>
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<span class="normal"> </span><span class="usertype">real</span><span class="normal"> width</span><span class="symbol">-</span><span class="keyword">for</span><span class="symbol">-</span><span class="normal">height request here by returning the</span>
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<span class="normal"> collective heights of all widgets that are stacked</span>
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<span class="normal"> </span><span class="function">vertically</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">or whatever is appropriate </span><span class="keyword">for</span><span class="normal"> </span><span class="usertype">this</span><span class="normal"> container</span><span class="symbol">)</span>
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<span class="normal"> </span><span class="symbol">...</span>
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<span class="normal"> </span><span class="cbracket">}</span>
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<span class="cbracket">}</span></pre></td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="informalexample"><pre class="programlisting">
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static void
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foo_container_get_preferred_height (GtkWidget *widget,
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gint *min_height,
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gint *nat_height)
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{
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if (i_am_in_height_for_width_mode)
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{
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gint min_width;
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GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget,
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&min_width,
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NULL);
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GTK_WIDGET_GET_CLASS (widget)->get_preferred_height_for_width
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(widget,
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min_width,
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min_height,
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nat_height);
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}
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else
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{
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... many containers support both request modes, execute the
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real width-for-height request here by returning the
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collective heights of all widgets that are stacked
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vertically (or whatever is appropriate for this container)
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...
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}
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}
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</pre></div>
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<p></p>
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<p>Similarly, when <a class="link" href="GtkWidget.html#gtk-widget-get-preferred-width-for-height" title="gtk_widget_get_preferred_width_for_height ()"><code class="function">gtk_widget_get_preferred_width_for_height()</code></a> is called for a container or widget
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that is height-for-width, it then only needs to return the base minimum width like so:</p>
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<div class="informalexample">
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<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
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<tbody>
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<tr>
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<td class="listing_lines" align="right"><pre>1
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19</pre></td>
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<td class="listing_code"><pre class="programlisting"><span class="keyword">static</span><span class="normal"> </span><span class="type">void</span>
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<span class="function">foo_container_get_preferred_width_for_height</span><span class="normal"> </span><span class="symbol">(</span><span class="usertype">GtkWidget</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">widget</span><span class="symbol">,</span>
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<span class="normal"> </span><span class="usertype">gint</span><span class="normal"> for_height</span><span class="symbol">,</span>
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<span class="normal"> </span><span class="usertype">gint</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">min_width</span><span class="symbol">,</span>
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<span class="normal"> </span><span class="usertype">gint</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">nat_width</span><span class="symbol">)</span>
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<span class="cbracket">{</span>
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<span class="normal"> </span><span class="keyword">if</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">i_am_in_height_for_width_mode</span><span class="symbol">)</span>
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<span class="normal"> </span><span class="cbracket">{</span>
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<span class="normal"> </span><span class="function">GTK_WIDGET_GET_CLASS</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">widget</span><span class="symbol">)-></span><span class="function">get_preferred_width</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">widget</span><span class="symbol">,</span>
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<span class="normal"> min_width</span><span class="symbol">,</span>
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<span class="normal"> nat_width</span><span class="symbol">);</span>
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<span class="normal"> </span><span class="cbracket">}</span>
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<span class="normal"> </span><span class="keyword">else</span>
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<span class="normal"> </span><span class="cbracket">{</span>
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<span class="normal"> </span><span class="symbol">...</span><span class="normal"> execute the </span><span class="usertype">real</span><span class="normal"> width</span><span class="symbol">-</span><span class="keyword">for</span><span class="symbol">-</span><span class="normal">height request here based on</span>
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<span class="normal"> the required width of the children collectively </span><span class="keyword">if</span><span class="normal"> the</span>
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<span class="normal"> container were to be allocated the </span><span class="usertype">said</span><span class="normal"> height </span><span class="symbol">...</span>
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<span class="normal"> </span><span class="cbracket">}</span>
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<span class="cbracket">}</span></pre></td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="informalexample"><pre class="programlisting">
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static void
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foo_container_get_preferred_width_for_height (GtkWidget *widget,
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gint for_height,
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gint *min_width,
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gint *nat_width)
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{
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if (i_am_in_height_for_width_mode)
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{
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GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget,
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min_width,
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nat_width);
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}
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else
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{
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... execute the real width-for-height request here based on
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the required width of the children collectively if the
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container were to be allocated the said height ...
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}
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}
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</pre></div>
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<p></p>
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<p>Height for width requests are generally implemented in terms of a virtual allocation
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of widgets in the input orientation. Assuming an height-for-width request mode, a container
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@ -711,45 +651,23 @@ for regular properties.</p>
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<widget> elements, one for each child that should be added to the focus
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chain. The ”name” attribute gives the id of the widget.</p>
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<p>An example of these properties in UI definitions:</p>
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<div class="informalexample">
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<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
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<tbody>
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<tr>
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<td class="listing_lines" align="right"><pre>1
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15</pre></td>
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<td class="listing_code"><pre class="programlisting"><span class="symbol"><</span><span class="usertype">object</span><span class="normal"> class</span><span class="symbol">=</span><span class="string">"GtkBox"</span><span class="symbol">></span>
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<span class="normal"> </span><span class="symbol"><</span><span class="normal">child</span><span class="symbol">></span>
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<span class="normal"> </span><span class="symbol"><</span><span class="usertype">object</span><span class="normal"> class</span><span class="symbol">=</span><span class="string">"GtkEntry"</span><span class="normal"> id</span><span class="symbol">=</span><span class="string">"entry1"</span><span class="symbol">/></span>
|
||||
<span class="normal"> </span><span class="symbol"><</span><span class="normal">packing</span><span class="symbol">></span>
|
||||
<span class="normal"> </span><span class="symbol"><</span><span class="usertype">property</span><span class="normal"> name</span><span class="symbol">=</span><span class="string">"pack-type"</span><span class="symbol">></span><span class="normal">start</span><span class="symbol"></</span><span class="normal">property</span><span class="symbol">></span>
|
||||
<span class="normal"> </span><span class="symbol"></</span><span class="normal">packing</span><span class="symbol">></span>
|
||||
<span class="normal"> </span><span class="symbol"></</span><span class="normal">child</span><span class="symbol">></span>
|
||||
<span class="normal"> </span><span class="symbol"><</span><span class="normal">child</span><span class="symbol">></span>
|
||||
<span class="normal"> </span><span class="symbol"><</span><span class="usertype">object</span><span class="normal"> class</span><span class="symbol">=</span><span class="string">"GtkEntry"</span><span class="normal"> id</span><span class="symbol">=</span><span class="string">"entry2"</span><span class="symbol">/></span>
|
||||
<span class="normal"> </span><span class="symbol"></</span><span class="normal">child</span><span class="symbol">></span>
|
||||
<span class="normal"> </span><span class="symbol"><</span><span class="normal">focus</span><span class="symbol">-</span><span class="normal">chain</span><span class="symbol">></span>
|
||||
<span class="normal"> </span><span class="symbol"><</span><span class="usertype">widget</span><span class="normal"> name</span><span class="symbol">=</span><span class="string">"entry1"</span><span class="symbol">/></span>
|
||||
<span class="normal"> </span><span class="symbol"><</span><span class="usertype">widget</span><span class="normal"> name</span><span class="symbol">=</span><span class="string">"entry2"</span><span class="symbol">/></span>
|
||||
<span class="normal"> </span><span class="symbol"></</span><span class="normal">focus</span><span class="symbol">-</span><span class="normal">chain</span><span class="symbol">></span>
|
||||
<span class="symbol"></</span><span class="normal">object</span><span class="symbol">></span></pre></td>
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||||
</tr>
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||||
</tbody>
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||||
</table>
|
||||
</div>
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||||
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||||
<div class="informalexample"><pre class="programlisting">
|
||||
<object class="GtkBox">
|
||||
<child>
|
||||
<object class="GtkEntry" id="entry1"/>
|
||||
<packing>
|
||||
<property name="pack-type">start</property>
|
||||
</packing>
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</child>
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||||
<child>
|
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<object class="GtkEntry" id="entry2"/>
|
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</child>
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||||
<focus-chain>
|
||||
<widget name="entry1"/>
|
||||
<widget name="entry2"/>
|
||||
</focus-chain>
|
||||
</object>
|
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</pre></div>
|
||||
<p></p>
|
||||
</div>
|
||||
</div>
|
||||
@ -1043,7 +961,7 @@ rather than <a class="link" href="GtkContainer.html#gtk-container-forall" title=
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="parameter_name"><p>callback</p></td>
|
||||
<td class="parameter_description"><p>a callback. </p></td>
|
||||
<td class="parameter_description"><p> a callback. </p></td>
|
||||
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span></td>
|
||||
</tr>
|
||||
<tr>
|
||||
@ -1079,7 +997,7 @@ gtk_container_get_children (<em class="parameter"><code><a class="link" href="Gt
|
||||
</div>
|
||||
<div class="refsect3">
|
||||
<a name="gtk-container-get-children.returns"></a><h4>Returns</h4>
|
||||
<p>a newly-allocated list of the container’s non-internal children. </p>
|
||||
<p> a newly-allocated list of the container’s non-internal children. </p>
|
||||
<p><span class="annotation">[<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> GtkWidget][<acronym title="Free data container after the code is done."><span class="acronym">transfer container</span></acronym>]</span></p>
|
||||
</div>
|
||||
</div>
|
||||
@ -1184,7 +1102,7 @@ currently focused widget. That can be obtained by calling
|
||||
</div>
|
||||
<div class="refsect3">
|
||||
<a name="gtk-container-get-focus-child.returns"></a><h4>Returns</h4>
|
||||
<p>The child widget which will receive the
|
||||
<p> The child widget which will receive the
|
||||
focus inside <em class="parameter"><code>container</code></em>
|
||||
when the <em class="parameter"><code>container</code></em>
|
||||
is focused,
|
||||
@ -1224,7 +1142,7 @@ default behaviour by overriding the class closure of this signal.</p>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="parameter_name"><p>child</p></td>
|
||||
<td class="parameter_description"><p>a <a class="link" href="GtkWidget.html" title="GtkWidget"><span class="type">GtkWidget</span></a>, or <code class="literal">NULL</code>. </p></td>
|
||||
<td class="parameter_description"><p> a <a class="link" href="GtkWidget.html" title="GtkWidget"><span class="type">GtkWidget</span></a>, or <code class="literal">NULL</code>. </p></td>
|
||||
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
|
||||
</tr>
|
||||
</tbody>
|
||||
@ -1255,7 +1173,7 @@ gtk_container_get_focus_vadjustment (<em class="parameter"><code><a class="link"
|
||||
</div>
|
||||
<div class="refsect3">
|
||||
<a name="gtk-container-get-focus-vadjustment.returns"></a><h4>Returns</h4>
|
||||
<p>the vertical focus adjustment, or
|
||||
<p> the vertical focus adjustment, or
|
||||
<code class="literal">NULL</code> if none has been set. </p>
|
||||
<p><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>][<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
|
||||
</div>
|
||||
@ -1323,7 +1241,7 @@ gtk_container_get_focus_hadjustment (<em class="parameter"><code><a class="link"
|
||||
</div>
|
||||
<div class="refsect3">
|
||||
<a name="gtk-container-get-focus-hadjustment.returns"></a><h4>Returns</h4>
|
||||
<p>the horizontal focus adjustment, or <code class="literal">NULL</code> if
|
||||
<p> the horizontal focus adjustment, or <code class="literal">NULL</code> if
|
||||
none has been set. </p>
|
||||
<p><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>][<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
|
||||
</div>
|
||||
@ -1814,7 +1732,7 @@ than <a class="link" href="GtkContainer.html#gtk-container-forall" title="gtk_co
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="parameter_name"><p>callback</p></td>
|
||||
<td class="parameter_description"><p>a callback. </p></td>
|
||||
<td class="parameter_description"><p> a callback. </p></td>
|
||||
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>][<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> callback_data]</span></td>
|
||||
</tr>
|
||||
<tr>
|
||||
@ -1972,7 +1890,7 @@ of the children. In that case, GTK+ stores <code class="literal">NULL</code> in
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="parameter_name"><p>focusable_widgets</p></td>
|
||||
<td class="parameter_description"><p>location
|
||||
<td class="parameter_description"><p> location
|
||||
to store the focus chain of the
|
||||
container, or <code class="literal">NULL</code>. You should free this list
|
||||
using <code class="function">g_list_free()</code> when you are done with it, however
|
||||
@ -2017,7 +1935,7 @@ when the focus chain is actually traversed.</p>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="parameter_name"><p>focusable_widgets</p></td>
|
||||
<td class="parameter_description"><p>the new focus chain. </p></td>
|
||||
<td class="parameter_description"><p> the new focus chain. </p></td>
|
||||
<td class="parameter_annotations"><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> GtkWidget]</span></td>
|
||||
</tr>
|
||||
</tbody>
|
||||
@ -2065,7 +1983,7 @@ gtk_container_class_find_child_property
|
||||
<tbody>
|
||||
<tr>
|
||||
<td class="parameter_name"><p>cclass</p></td>
|
||||
<td class="parameter_description"><p>a <a class="link" href="GtkContainer.html#GtkContainerClass" title="struct GtkContainerClass"><span class="type">GtkContainerClass</span></a>. </p></td>
|
||||
<td class="parameter_description"><p> a <a class="link" href="GtkContainer.html#GtkContainerClass" title="struct GtkContainerClass"><span class="type">GtkContainerClass</span></a>. </p></td>
|
||||
<td class="parameter_annotations"><span class="annotation">[<acronym title="Override the parsed C type with given type."><span class="acronym">type</span></acronym> GtkContainerClass]</span></td>
|
||||
</tr>
|
||||
<tr>
|
||||
@ -2078,7 +1996,7 @@ gtk_container_class_find_child_property
|
||||
</div>
|
||||
<div class="refsect3">
|
||||
<a name="gtk-container-class-find-child-property.returns"></a><h4>Returns</h4>
|
||||
<p>the <span class="type">GParamSpec</span> of the child
|
||||
<p> the <span class="type">GParamSpec</span> of the child
|
||||
property or <code class="literal">NULL</code> if <em class="parameter"><code>class</code></em>
|
||||
has no child property with that
|
||||
name. </p>
|
||||
@ -2152,7 +2070,7 @@ gtk_container_class_install_child_properties
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="parameter_name"><p>pspecs</p></td>
|
||||
<td class="parameter_description"><p>the <span class="type">GParamSpec</span> array defining the new
|
||||
<td class="parameter_description"><p> the <span class="type">GParamSpec</span> array defining the new
|
||||
child properties. </p></td>
|
||||
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=n_pspecs]</span></td>
|
||||
</tr>
|
||||
@ -2180,7 +2098,7 @@ gtk_container_class_list_child_properties
|
||||
<tbody>
|
||||
<tr>
|
||||
<td class="parameter_name"><p>cclass</p></td>
|
||||
<td class="parameter_description"><p>a <a class="link" href="GtkContainer.html#GtkContainerClass" title="struct GtkContainerClass"><span class="type">GtkContainerClass</span></a>. </p></td>
|
||||
<td class="parameter_description"><p> a <a class="link" href="GtkContainer.html#GtkContainerClass" title="struct GtkContainerClass"><span class="type">GtkContainerClass</span></a>. </p></td>
|
||||
<td class="parameter_annotations"><span class="annotation">[<acronym title="Override the parsed C type with given type."><span class="acronym">type</span></acronym> GtkContainerClass]</span></td>
|
||||
</tr>
|
||||
<tr>
|
||||
@ -2193,7 +2111,7 @@ gtk_container_class_list_child_properties
|
||||
</div>
|
||||
<div class="refsect3">
|
||||
<a name="gtk-container-class-list-child-properties.returns"></a><h4>Returns</h4>
|
||||
<p>a newly allocated <code class="literal">NULL</code>-terminated array of <span class="type">GParamSpec</span>*.
|
||||
<p> a newly allocated <code class="literal">NULL</code>-terminated array of <span class="type">GParamSpec</span>*.
|
||||
The array must be freed with <code class="function">g_free()</code>. </p>
|
||||
<p><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=n_properties][<acronym title="Free data container after the code is done."><span class="acronym">transfer container</span></acronym>]</span></p>
|
||||
</div>
|
||||
@ -2440,6 +2358,6 @@ user_function (<a class="link" href="GtkContainer.html" title="GtkContainer"><sp
|
||||
</div>
|
||||
</div>
|
||||
<div class="footer">
|
||||
<hr>Generated by GTK-Doc V1.27</div>
|
||||
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|
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|
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|
||||
Reference in New Issue
Block a user