gtk-gtktreeview-drag-and-drop.html

最新gtk中文资料集

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<div class="refsect2" lang="en">
<a name="id3770029"></a><h3>
<a name="GtkTreeDragSourceIface"></a>GtkTreeDragSourceIface</h3>
<a class="indexterm" name="id3770041"></a><pre class="programlisting">typedef struct {
  GTypeInterface g_iface;

  /* VTable - not signals */

  gboolean     (* row_draggable)        (GtkTreeDragSource   *drag_source,
                                         GtkTreePath         *path);

  gboolean     (* drag_data_get)        (GtkTreeDragSource   *drag_source,
                                         GtkTreePath         *path,
                                         GtkSelectionData    *selection_data);

  gboolean     (* drag_data_delete)     (GtkTreeDragSource *drag_source,
                                         GtkTreePath       *path);
} GtkTreeDragSourceIface;
</pre>
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<div class="refsect2" lang="en">
<a name="id3770066"></a><h3>
<a name="gtk-tree-drag-source-drag-data-delete"></a>gtk_tree_drag_source_drag_data_delete ()</h3>
<a class="indexterm" name="id3770081"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a>            gtk_tree_drag_source_drag_data_delete
                                                        (<a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragSource">GtkTreeDragSource</a> *drag_source,
                                                         <a class="link" href="GtkTreeModel.html#GtkTreePath">GtkTreePath</a> *path);</pre>
<p>
Asks the <a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragSource"><span class="type">GtkTreeDragSource</span></a> to delete the row at <em class="parameter"><code>path</code></em>, because
it was moved somewhere else via drag-and-drop. Returns <a
href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"
><code class="literal">FALSE</code></a>
if the deletion fails because <em class="parameter"><code>path</code></em> no longer exists, or for
some model-specific reason. Should robustly handle a <em class="parameter"><code>path</code></em> no
longer found in the model!</p>
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<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>drag_source</code></em>&#160;:</span></p></td>
<td> a <a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragSource"><span class="type">GtkTreeDragSource</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>path</code></em>&#160;:</span></p></td>
<td> row that was being dragged
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td> <a
href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a> if the row was successfully deleted
</td>
</tr>
</tbody>
</table></div>
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<div class="refsect2" lang="en">
<a name="id3770223"></a><h3>
<a name="gtk-tree-drag-source-drag-data-get"></a>gtk_tree_drag_source_drag_data_get ()</h3>
<a class="indexterm" name="id3770237"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a>            gtk_tree_drag_source_drag_data_get  (<a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragSource">GtkTreeDragSource</a> *drag_source,
                                                         <a class="link" href="GtkTreeModel.html#GtkTreePath">GtkTreePath</a> *path,
                                                         <a class="link" href="GtkWidget.html#GtkSelectionData">GtkSelectionData</a> *selection_data);</pre>
<p>
Asks the <a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragSource"><span class="type">GtkTreeDragSource</span></a> to fill in <em class="parameter"><code>selection_data</code></em> with a
representation of the row at <em class="parameter"><code>path</code></em>. <em class="parameter"><code>selection_data-&gt;target</code></em> gives
the required type of the data.  Should robustly handle a <em class="parameter"><code>path</code></em> no
longer found in the model!</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>drag_source</code></em>&#160;:</span></p></td>
<td> a <a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragSource"><span class="type">GtkTreeDragSource</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>path</code></em>&#160;:</span></p></td>
<td> row that was dragged
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>selection_data</code></em>&#160;:</span></p></td>
<td> a <a class="link" href="GtkWidget.html#GtkSelectionData"><span class="type">GtkSelectionData</span></a> to fill with data from the dragged row
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td> <a
href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a> if data of the required type was provided 
</td>
</tr>
</tbody>
</table></div>
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<div class="refsect2" lang="en">
<a name="id3770404"></a><h3>
<a name="gtk-tree-drag-source-row-draggable"></a>gtk_tree_drag_source_row_draggable ()</h3>
<a class="indexterm" name="id3770418"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a>            gtk_tree_drag_source_row_draggable  (<a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragSource">GtkTreeDragSource</a> *drag_source,
                                                         <a class="link" href="GtkTreeModel.html#GtkTreePath">GtkTreePath</a> *path);</pre>
<p>
Asks the <a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragSource"><span class="type">GtkTreeDragSource</span></a> whether a particular row can be used as
the source of a DND operation. If the source doesn't implement
this interface, the row is assumed draggable.</p>
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</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>drag_source</code></em>&#160;:</span></p></td>
<td> a <a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragSource"><span class="type">GtkTreeDragSource</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>path</code></em>&#160;:</span></p></td>
<td> row on which user is initiating a drag
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td> <a
href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a> if the row can be dragged
</td>
</tr>
</tbody>
</table></div>
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<div class="refsect2" lang="en">
<a name="id3770529"></a><h3>
<a name="GtkTreeDragDest-struct"></a>GtkTreeDragDest</h3>
<a class="indexterm" name="id3770542"></a><pre class="programlisting">typedef struct _GtkTreeDragDest GtkTreeDragDest;</pre>
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</p>
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<div class="refsect2" lang="en">
<a name="id3770558"></a><h3>
<a name="GtkTreeDragDestIface"></a>GtkTreeDragDestIface</h3>
<a class="indexterm" name="id3770570"></a><pre class="programlisting">typedef struct {
  GTypeInterface g_iface;

  /* VTable - not signals */

  gboolean     (* drag_data_received) (GtkTreeDragDest   *drag_dest,
                                       GtkTreePath       *dest,
                                       GtkSelectionData  *selection_data);

  gboolean     (* row_drop_possible)  (GtkTreeDragDest   *drag_dest,
                                       GtkTreePath       *dest_path,
				       GtkSelectionData  *selection_data);
} GtkTreeDragDestIface;
</pre>
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<div class="refsect2" lang="en">
<a name="id3770594"></a><h3>
<a name="gtk-tree-drag-dest-drag-data-received"></a>gtk_tree_drag_dest_drag_data_received ()</h3>
<a class="indexterm" name="id3770608"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a>            gtk_tree_drag_dest_drag_data_received
                                                        (<a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragDest">GtkTreeDragDest</a> *drag_dest,
                                                         <a class="link" href="GtkTreeModel.html#GtkTreePath">GtkTreePath</a> *dest,
                                                         <a class="link" href="GtkWidget.html#GtkSelectionData">GtkSelectionData</a> *selection_data);</pre>
<p>