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<h1>GFC::Gtk::TreeDragDest Class Reference</h1>A GtkTreeDragDest C++ wrapper class.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="treednd_8hh-source.html">gfc/gtk/treednd.hh</a>></code>
<p>
<p>Inheritance diagram for GFC::Gtk::TreeDragDest:
<p><center><img src="classGFC_1_1Gtk_1_1TreeDragDest.png" usemap="#GFC::Gtk::TreeDragDest_map" border="0" alt=""></center>
<map name="GFC::Gtk::TreeDragDest_map">
<area doxygen="gfccore.tag:" href="classGFC_1_1G_1_1TypeInterface.html" alt="GFC::G::TypeInterface" shape="rect" coords="78,112,225,136">
<area doxygen="gfccore.tag:" href="classGFC_1_1G_1_1TypeInstance.html" alt="GFC::G::TypeInstance" shape="rect" coords="78,56,225,80">
<area doxygen="gfccore.tag:" href="classGFC_1_1Trackable.html" alt="GFC::Trackable" shape="rect" coords="78,0,225,24">
<area href="classGFC_1_1Gtk_1_1ListStore.html" alt="GFC::Gtk::ListStore" shape="rect" coords="0,224,147,248">
<area href="classGFC_1_1Gtk_1_1TreeStore.html" alt="GFC::Gtk::TreeStore" shape="rect" coords="157,224,304,248">
</map>
<a href="classGFC_1_1Gtk_1_1TreeDragDest-members.html">List of all members.</a><h2>Public Member Functions</h2>
<tr><td colspan="2"><div class="groupHeader">Accessors</div></td></tr>
<ul>
<li><a class="anchor" name="z964_0" doxytag="GFC::Gtk::TreeDragDest::gtk_tree_drag_dest" ></a>
GtkTreeDragDest * <a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html#z964_0">gtk_tree_drag_dest</a> () const
<dl class="el"><dd class="mdescRight">Get a pointer to the GtkTreeDragDest structure. <br></dl><li><a class="anchor" name="z964_1" doxytag="GFC::Gtk::TreeDragDest::operator GtkTreeDragDest *" ></a>
<a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html#z964_1">operator GtkTreeDragDest *</a> () const
<dl class="el"><dd class="mdescRight">Conversion operator; safely converts a <a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html">TreeDragDest</a> to a GtkTreeDragDest pointer. <br></dl><li>bool <a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html#z964_2">row_drop_possible</a> (const <a class="el" href="classGFC_1_1Gtk_1_1TreePath.html">TreePath</a> &dest_path, const <a class="el" href="classGFC_1_1Gtk_1_1SelectionData.html">SelectionData</a> &selection_data) const
<dl class="el"><dd class="mdescRight">Determines whether a drop is possible before the given <em>dest_path</em>, at the same depth as <em>dest_path</em>, that is, can we drop the data in selection_data at that location. <a href="#z964_2"></a><br></dl></ul>
<tr><td colspan="2"><div class="groupHeader">Methods</div></td></tr>
<ul>
<li>bool <a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html#z965_0">drag_data_received</a> (const <a class="el" href="classGFC_1_1Gtk_1_1TreePath.html">TreePath</a> &dest, const <a class="el" href="classGFC_1_1Gtk_1_1SelectionData.html">SelectionData</a> &selection_data)
<dl class="el"><dd class="mdescRight">Asks the <a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html">TreeDragDest</a> to insert a row before the path dest, deriving the contents of the row from <em>selection_data</em>. <a href="#z965_0"></a><br></dl></ul>
<h2>Protected Member Functions</h2>
<tr><td colspan="2"><div class="groupHeader">Constructors</div></td></tr>
<ul>
<li><a class="anchor" name="z963_0" doxytag="GFC::Gtk::TreeDragDest::TreeDragDest" ></a>
<a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html#z963_0">TreeDragDest</a> ()
<dl class="el"><dd class="mdescRight">Constructs a new <a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html">TreeDragDest</a> object. <br></dl><li><a class="anchor" name="z963_1" doxytag="GFC::Gtk::TreeDragDest::~TreeDragDest" ></a>
virtual <a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html#z963_1">~TreeDragDest</a> ()=0
<dl class="el"><dd class="mdescRight">Destructor. <br></dl></ul>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A GtkTreeDragDest C++ wrapper class.
<p>
GTK+ supports Drag-and-Drop in tree views with a high-level and a low-level API.<p>
The low-level API consists of the GTK+ DND API, augmented by some treeview utility functions: <a class="el" href="classGFC_1_1Gtk_1_1TreeView.html#z1011_40">Gtk::TreeView::set_drag_dest_row()</a>, <a class="el" href="classGFC_1_1Gtk_1_1TreeView.html#z1010_22">Gtk::TreeView::get_drag_dest_row()</a>, <a class="el" href="classGFC_1_1Gtk_1_1TreeView.html#z1010_23">Gtk::TreeView::get_dest_row_at_pos()</a> and <a class="el" href="classGFC_1_1Gtk_1_1TreeView.html#z1011_41">Gtk::TreeView::create_row_drag_icon()</a>. This API leaves a lot of flexibility, but nothing is done automatically, and implementing advanced features like hover-to-open-rows or autoscrolling on top of this API is a lot of work.<p>
On the other hand, if you write to the high-level <a class="el" href="classGFC_1_1Gtk_1_1TreeDragSource.html">TreeDragSource</a> and <a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html">TreeDragDest</a> API, then all the bookkeeping of rows is done for you, as well as things like hover-to-open and auto-scroll. The <a class="el" href="classGFC_1_1Gtk_1_1TreeDragSource.html">TreeDragSource</a> interface is implemented by <a class="el" href="classGFC_1_1Gtk_1_1TreeModelSort.html">Gtk::TreeModelSort</a>, <a class="el" href="classGFC_1_1Gtk_1_1TreeStore.html">Gtk::TreeStore</a>, <a class="el" href="classGFC_1_1Gtk_1_1ListStore.html">Gtk::ListStore</a> and <a class="el" href="classGFC_1_1Gtk_1_1TreeModelFilter.html">Gtk::TreeModelFilter</a>. The <a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html">TreeDragDest</a> interface is implemented by <a class="el" href="classGFC_1_1Gtk_1_1TreeStore.html">Gtk::TreeStore</a> and <a class="el" href="classGFC_1_1Gtk_1_1ListStore.html">Gtk::ListStore</a>.
<p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="z965_0" doxytag="GFC::Gtk::TreeDragDest::drag_data_received" ></a><p>
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<td class="md" nowrap valign="top"> bool GFC::Gtk::TreeDragDest::drag_data_received </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classGFC_1_1Gtk_1_1TreePath.html">TreePath</a> & </td>
<td class="mdname" nowrap> <em>dest</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>const <a class="el" href="classGFC_1_1Gtk_1_1SelectionData.html">SelectionData</a> & </td>
<td class="mdname" nowrap> <em>selection_data</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
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</td>
<td>
<p>
Asks the <a class="el" href="classGFC_1_1Gtk_1_1TreeDragDest.html">TreeDragDest</a> to insert a row before the path dest, deriving the contents of the row from <em>selection_data</em>.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>dest</em> </td><td>The row to drop in front of. </td></tr>
<tr><td></td><td valign=top><em>selection_data</em> </td><td>The data to drop. </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>Whether a new row was created before position <em>dest</em>.</dd></dl>
<br>
If dest is outside the tree so that inserting before it is impossible, false will be returned. Also, false may be returned if the new row is not created for some model-specific reason. Should robustly handle a dest no longer found in the model! </td>
</tr>
</table>
<a class="anchor" name="z964_2" doxytag="GFC::Gtk::TreeDragDest::row_drop_possible" ></a><p>
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<td class="md" nowrap valign="top"> bool GFC::Gtk::TreeDragDest::row_drop_possible </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classGFC_1_1Gtk_1_1TreePath.html">TreePath</a> & </td>
<td class="mdname" nowrap> <em>dest_path</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>const <a class="el" href="classGFC_1_1Gtk_1_1SelectionData.html">SelectionData</a> & </td>
<td class="mdname" nowrap> <em>selection_data</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Determines whether a drop is possible before the given <em>dest_path</em>, at the same depth as <em>dest_path</em>, that is, can we drop the data in selection_data at that location.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>dest_path</em> </td><td>The destination row. </td></tr>
<tr><td></td><td valign=top><em>selection_data</em> </td><td>The data being dragged. </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd><em>true</em> if a drop is possible before <em>dest_path</em>.</dd></dl>
<br>
Note, <em>dest_path</em> doesn't have to exist but the return value will almost certainly be false if the parent of <em>dest_path</em> doesn't exist, though. </td>
</tr>
</table>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="treednd_8hh-source.html">treednd.hh</a></ul>
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