[gtkmm] Added a const version of get_drop_item().

[Murray Cumming <murrayc src gnome org>]

commit f465c23068137a88c86bd685dc78925a6c5b9a84
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Mar 22 09:03:41 2010 +0100

    Added a const version of get_drop_item().

 ChangeLog              |   16 ++++++++++------
 gtk/src/toolpalette.hg |    1 +
 2 files changed, 11 insertions(+), 6 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 6f8f4b8..461b9ab 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2010-03-22  Murray Cumming  <murrayc murrayc com>
+
+	* gtk/src/toolpalette.hg: Added a const version of get_drop_item().
+
 2010-03-19  Murray Cumming  <murrayc murrayc com>
 
     Regenerated C documentation XML files.
@@ -10,7 +14,7 @@
     Demo: Fix use of deprecated API.
 
 	* configure.ac: Add PANGOMM to the list of deprecations to check for.
-	* demos/Makefile.am: Add GTKMM's own deprecation defines so we don't ever use 
+	* demos/Makefile.am: Add GTKMM's own deprecation defines so we don't ever use
     deprecated API in this code.
 	* demos/gtk-demo/example_colorsel.cc:
 	* demos/gtk-demo/example_uimanager.cc: Correct use of deprecated API.
@@ -40,7 +44,7 @@
 
 	* gtk/src/toolitem.hg: Added  get_text_alignment(), get_text_orientation(),
     get_text_size_group().
-	* gtk/src/toolshell.hg: Added  get_text_orientation(), get_text_alignment(), 
+	* gtk/src/toolshell.hg: Added  get_text_orientation(), get_text_alignment(),
     get_ellipsize_mode(), get_text_size_group()
     * tools/m4/convert_gtk.m4: Added SizeGroup conversions.
 
@@ -67,14 +71,14 @@
 	* gtk/src/table.hg:
 	* gtk/src/tearoffmenuitem.hg:
 	* gtk/src/textview.hg:
-	* gtk/src/widget.[hg|ccg]: Replace uses of GSEAL()ed struct fields where 
-    possible by using new C functions. But some have no replacement so 
+	* gtk/src/widget.[hg|ccg]: Replace uses of GSEAL()ed struct fields where
+    possible by using new C functions. But some have no replacement so
     we must undef GSEAL_ENABLE in the .cpp file to keep our now-deprecated API.
 
 	* gtk/src/printer.hg: Add get_hard_margins().
 	* gtk/src/viewport.hg: Added get_bin_window().
-	* gtk/src/window.[hg|ccg]: Added get_window_type(), deprecating 
-    get_is_toplevel() and get_is_popup(). Removed get_is_dialog() because it 
+	* gtk/src/window.[hg|ccg]: Added get_window_type(), deprecating
+    get_is_toplevel() and get_is_popup(). Removed get_is_dialog() because it
     never had any implmentation, so nobody could be using it.
 
 2010-03-10  Murray Cumming  <murrayc murrayc com>
diff --git a/gtk/src/toolpalette.hg b/gtk/src/toolpalette.hg
index fa9c131..5593c56 100644
--- a/gtk/src/toolpalette.hg
+++ b/gtk/src/toolpalette.hg
@@ -73,6 +73,7 @@ public:
   _WRAP_METHOD(ToolbarStyle get_style() const, gtk_tool_palette_get_style)
 
   _WRAP_METHOD(ToolItem* get_drop_item(int x, int y), gtk_tool_palette_get_drop_item)
+  _WRAP_METHOD(const ToolItem* get_drop_item(int x, int y) const, gtk_tool_palette_get_drop_item, constversion)
 
 //This conversion is needed because of https://bugzilla.gnome.org/show_bug.cgi?id=567729#c37
 #m4 _CONVERSION(`GtkWidget*',`ToolItemGroup*',`Glib::wrap(GTK_TOOL_ITEM_GROUP($3))')