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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="sec-dnd-signals"></a>Signals</h2></div></div></div>
<p>
When a drop destination has accepted a dragged item, certain signals will be
emitted, depending on what action has been selected. For instance, the user
might have held down the <span class="keycap"><strong>Shift</strong></span> key to specify a
<code class="literal">move</code> rather than a <code class="literal">copy</code>. Remember that
the user can only select the actions which you have specified in your calls to
<code class="methodname">drag_dest_set()</code> and
<code class="methodname">drag_source_set()</code>.
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<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="sec-dnd-signals-copy"></a>Copy</h3></div></div></div>
<p>
The source widget will emit these signals, in this order:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p><code class="literal">drag_begin</code>: Provides DragContext.</p></li>
<li class="listitem"><p><code class="literal">drag_data_get</code>: Provides <code class="literal">info</code> about the dragged data format, and a <code class="literal">Gtk::SelectionData</code> structure, in which you should put the requested data.</p></li>
<li class="listitem"><p><code class="literal">drag_end</code>: Provides DragContext.</p></li>
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<p>
The destination widget will emit these signals, in this order:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p><code class="literal">drag_motion</code>: Provides DragContext and coordinates.
You can call the <code class="methodname">drag_status()</code> method of the DragContext
to indicate which action will be accepted.</p></li>
<li class="listitem"><p><code class="literal">drag_drop</code>: Provides DragContext and coordinates.
You can call <code class="methodname">drag_get_data()</code>, which triggers the
<code class="literal">drag_data_get</code> signal in the source widget, and then the
<code class="literal">drag_data_received</code> signal in the destination widget.</p></li>
<li class="listitem"><p>
<code class="literal">drag_data_received</code>: Provides <code class="literal">info</code>
about the dragged data format, and a
<code class="literal">Gtk::SelectionData</code> structure which contains the
dropped data. You should call the <code class="methodname">drag_finish()</code>
method of the <code class="literal">DragContext</code> to indicate whether the
operation was successful.
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<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="dnd-signal-move"></a>Move</h3></div></div></div>
<p>During a <code class="literal">move</code>, the source widget will also emit this signal:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p><code class="literal">drag_data_delete</code>: Gives the source the opportunity to delete the original data if that's appropriate.</p></li></ul></div>
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