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<h1>GFC::Gtk::DragContext Class Reference</h1>A GTK+ Drag and Drop C++ wrapper class.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="gtk_2dnd_8hh-source.html">gfc/gtk/dnd.hh</a>></code>
<p>
<p>Inheritance diagram for GFC::Gtk::DragContext:
<p><center><img src="classGFC_1_1Gtk_1_1DragContext.png" usemap="#GFC::Gtk::DragContext_map" border="0" alt=""></center>
<map name="GFC::Gtk::DragContext_map">
<area href="classGFC_1_1Gdk_1_1DragContext.html" alt="GFC::Gdk::DragContext" shape="rect" coords="0,168,142,192">
<area doxygen="gfccore.tag:" href="classGFC_1_1G_1_1Object.html" alt="GFC::G::Object" shape="rect" coords="0,112,142,136">
<area doxygen="gfccore.tag:" href="classGFC_1_1G_1_1TypeInstance.html" alt="GFC::G::TypeInstance" shape="rect" coords="0,56,142,80">
<area doxygen="gfccore.tag:" href="classGFC_1_1Trackable.html" alt="GFC::Trackable" shape="rect" coords="0,0,142,24">
</map>
<a href="classGFC_1_1Gtk_1_1DragContext-members.html">List of all members.</a><h2>Public Member Functions</h2>
<tr><td colspan="2"><div class="groupHeader">Constructors</div></td></tr>
<ul>
<li><a class="anchor" name="z483_0" doxytag="GFC::Gtk::DragContext::~DragContext" ></a>
virtual <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html#z483_0">~DragContext</a> ()
<dl class="el"><dd class="mdescRight">Destructor. <br></dl></ul>
<tr><td colspan="2"><div class="groupHeader">Accessors</div></td></tr>
<ul>
<li><a class="el" href="classGFC_1_1Gtk_1_1Widget.html">Widget</a> * <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html#z484_0">get_source_widget</a> () const
<dl class="el"><dd class="mdescRight">Determines the source widget for a drag. <a href="#z484_0"></a><br></dl></ul>
<tr><td colspan="2"><div class="groupHeader">Methods</div></td></tr>
<ul>
<li>void <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html#z485_0">finish</a> (bool success, bool delete_data, unsigned int time)
<dl class="el"><dd class="mdescRight">Informs the drag source that the drop is finished, and that the data of the drag will no longer be required. <a href="#z485_0"></a><br></dl><li>void <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html#z485_1">set_icon_widget</a> (<a class="el" href="classGFC_1_1Gtk_1_1Widget.html">Widget</a> &widget, int hot_x, int hot_y)
<dl class="el"><dd class="mdescRight">Changes the icon for a widget to a given widget. <a href="#z485_1"></a><br></dl><li>void <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html#z485_2">set_icon_pixmap</a> (<a class="el" href="classGFC_1_1Gdk_1_1Colormap.html">Gdk::Colormap</a> &colormap, <a class="el" href="classGFC_1_1Gdk_1_1Pixmap.html">Gdk::Pixmap</a> &pixmap, <a class="el" href="classGFC_1_1Gdk_1_1Bitmap.html">Gdk::Bitmap</a> *mask, int hot_x, int hot_y)
<dl class="el"><dd class="mdescRight">Sets pixmap as the icon for a given drag. <a href="#z485_2"></a><br></dl><li>void <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html#z485_3">set_icon_pixbuf</a> (<a class="el" href="classGFC_1_1Gdk_1_1Pixbuf.html">Gdk::Pixbuf</a> &pixbuf, int hot_x, int hot_y)
<dl class="el"><dd class="mdescRight">Sets pixbuf as the icon for a given drag. <a href="#z485_3"></a><br></dl><li>void <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html#z485_4">set_icon_stock</a> (const <a class="el" href="classGFC_1_1Gtk_1_1StockId.html">StockId</a> &stock_id, int hot_x, int hot_y)
<dl class="el"><dd class="mdescRight">Sets the icon for a given drstock_idag from a stock ID. <a href="#z485_4"></a><br></dl><li>void <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html#z485_5">set_icon_default</a> ()
<dl class="el"><dd class="mdescRight">Sets the icon for a particular drag to the default icon. <a href="#z485_5"></a><br></dl></ul>
<h2>Protected Member Functions</h2>
<tr><td colspan="2"><div class="groupHeader">Constructors</div></td></tr>
<ul>
<li><a class="el" href="classGFC_1_1Gtk_1_1DragContext.html#z482_0">DragContext</a> (GdkDragContext *drag_context, bool reference=true)
<dl class="el"><dd class="mdescRight">Construct a new <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html">DragContext</a> from an existing GdkDragContext. <a href="#z482_0"></a><br></dl></ul>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A GTK+ Drag and Drop C++ wrapper class.
<p>
GTK+ has a rich set of functions for doing inter-process communication via the drag-and-drop metaphor. GTK+ can do drag-and-drop (DND) via multiple protocols. The currently supported protocols are the Xdnd and Motif protocols. As well as the methods in this class, applications may need to use some facilities provided for Selections. Also, the Drag and Drop API makes use of signals in the <a class="el" href="classGFC_1_1Gtk_1_1Widget.html">Widget</a> class.<p>
<a class="el" href="classGFC_1_1Gtk_1_1DragContext.html">DragContext</a> is a convenient wrapper class for the GTK+ drag-and-drop functions. It derives from <a class="el" href="classGFC_1_1Gdk_1_1DragContext.html">Gdk::DragContext</a>. There is no GtkDragContext.<p>
The default icon for a drag opration can be changed via the stock system by changing the stock pixbuf for GTK_STOCK_DND.
<p>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="z482_0" doxytag="GFC::Gtk::DragContext::DragContext" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> GFC::Gtk::DragContext::DragContext </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">GdkDragContext * </td>
<td class="mdname" nowrap> <em>drag_context</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>bool </td>
<td class="mdname" nowrap> <em>reference</em> = <code>true</code></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [explicit, protected]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Construct a new <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html">DragContext</a> from an existing GdkDragContext.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>drag_context</em> </td><td>A pointer to a GdkDragContext. </td></tr>
<tr><td></td><td valign=top><em>reference</em> </td><td>Set false if the initial reference count is floating, set true if it's not.</td></tr>
</table>
</dl>
<br>
The <em>drag_context</em> can be a newly created GdkDragContext or an existing GdkDragContext. (see <a class="elRef" doxygen="gfccore.tag:" href="classGFC_1_1G_1_1Object.html#z68_0">G::Object::Object</a>).
<p>
Reimplemented from <a class="el" href="classGFC_1_1Gdk_1_1DragContext.html#z128_1">GFC::Gdk::DragContext</a>.
<p>
</td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="z485_0" doxytag="GFC::Gtk::DragContext::finish" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::DragContext::finish </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">bool </td>
<td class="mdname" nowrap> <em>success</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>bool </td>
<td class="mdname" nowrap> <em>delete_data</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>unsigned int </td>
<td class="mdname" nowrap> <em>time</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Informs the drag source that the drop is finished, and that the data of the drag will no longer be required.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>success</em> </td><td>A flag indicating whether the drop was successful. </td></tr>
<tr><td></td><td valign=top><em>delete_data</em> </td><td>A flag indicating whether the source should delete the original data (true for a move). </td></tr>
<tr><td></td><td valign=top><em>time</em> </td><td>The timestamp from the "drag_data_drop" signal. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="z484_0" doxytag="GFC::Gtk::DragContext::get_source_widget" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="classGFC_1_1Gtk_1_1Widget.html">Widget</a>* GFC::Gtk::DragContext::get_source_widget </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Determines the source widget for a drag.
<p>
<dl compact><dt><b>Returns:</b></dt><dd>If the drag is occurring within a single application, a pointer to the source widget. Otherwise, null. </dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="z485_5" doxytag="GFC::Gtk::DragContext::set_icon_default" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::DragContext::set_icon_default </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Sets the icon for a particular drag to the default icon.
<p>
This must be called with a context for the source side of a drag. </td>
</tr>
</table>
<a class="anchor" name="z485_3" doxytag="GFC::Gtk::DragContext::set_icon_pixbuf" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::DragContext::set_icon_pixbuf </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classGFC_1_1Gdk_1_1Pixbuf.html">Gdk::Pixbuf</a> & </td>
<td class="mdname" nowrap> <em>pixbuf</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>hot_x</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>hot_y</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Sets pixbuf as the icon for a given drag.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>pixbuf</em> </td><td>The image data for the icon. </td></tr>
<tr><td></td><td valign=top><em>hot_x</em> </td><td>The X offset within pixbuf of the hotspot. </td></tr>
<tr><td></td><td valign=top><em>hot_y</em> </td><td>The Y offset within pixbuf of the hotspot. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="z485_2" doxytag="GFC::Gtk::DragContext::set_icon_pixmap" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::DragContext::set_icon_pixmap </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classGFC_1_1Gdk_1_1Colormap.html">Gdk::Colormap</a> & </td>
<td class="mdname" nowrap> <em>colormap</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="classGFC_1_1Gdk_1_1Pixmap.html">Gdk::Pixmap</a> & </td>
<td class="mdname" nowrap> <em>pixmap</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap><a class="el" href="classGFC_1_1Gdk_1_1Bitmap.html">Gdk::Bitmap</a> * </td>
<td class="mdname" nowrap> <em>mask</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>hot_x</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>hot_y</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Sets pixmap as the icon for a given drag.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>colormap</em> </td><td>The colormap of the icon. </td></tr>
<tr><td></td><td valign=top><em>pixmap</em> </td><td>The image data for the icon. </td></tr>
<tr><td></td><td valign=top><em>mask</em> </td><td>The transparency mask for the icon. </td></tr>
<tr><td></td><td valign=top><em>hot_x</em> </td><td>The X offset within pixmap of the hotspot. </td></tr>
<tr><td></td><td valign=top><em>hot_y</em> </td><td>The Y offset within pixmap of the hotspot.</td></tr>
</table>
</dl>
<br>
GTK+ retains references for the arguments, and will release them when they are no longer needed. In general, <a class="el" href="classGFC_1_1Gtk_1_1DragContext.html#z485_3">set_icon_pixbuf()</a> will be more convenient to use. </td>
</tr>
</table>
<a class="anchor" name="z485_4" doxytag="GFC::Gtk::DragContext::set_icon_stock" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::DragContext::set_icon_stock </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classGFC_1_1Gtk_1_1StockId.html">StockId</a> & </td>
<td class="mdname" nowrap> <em>stock_id</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>hot_x</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>hot_y</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Sets the icon for a given drstock_idag from a stock ID.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>stock_id</em> </td><td>The identifier of the stock icon to use for the drag. </td></tr>
<tr><td></td><td valign=top><em>hot_x</em> </td><td>The X offset within icon of the hotspot. </td></tr>
<tr><td></td><td valign=top><em>hot_y</em> </td><td>The Y offset within icon of the hotspot. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="z485_1" doxytag="GFC::Gtk::DragContext::set_icon_widget" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::DragContext::set_icon_widget </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classGFC_1_1Gtk_1_1Widget.html">Widget</a> & </td>
<td class="mdname" nowrap> <em>widget</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>hot_x</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>hot_y</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Changes the icon for a widget to a given widget.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>widget</em> </td><td>A toplevel window to use as an icon. </td></tr>
<tr><td></td><td valign=top><em>hot_x</em> </td><td>The X offset within widget of the hotspot. </td></tr>
<tr><td></td><td valign=top><em>hot_y</em> </td><td>The Y offset within widget of the hotspot.</td></tr>
</table>
</dl>
<br>
GTK+ will not destroy the icon, so if you don't want it to persist, you should connect to the "drag_end" signal and destroy it yourself. </td>
</tr>
</table>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="gtk_2dnd_8hh-source.html">gtk/dnd.hh</a></ul>
<hr size="1"><address style="align: right;"><small>Generated on Tue Aug 24 00:34:39 2004 for GFC-UI by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border=0 ></a> 1.3.8 </small></address>
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