[gtkmm] Add TODO comment

[Murray Cumming <murrayc src gnome org>]

commit 4b92b911d37ec14eb6ea0a28acc109bf4373bbae
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Jul 14 12:08:40 2011 +0200

    Add TODO comment

 gdk/src/pixbuf.hg |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/gdk/src/pixbuf.hg b/gdk/src/pixbuf.hg
index c95adec..505ba3f 100644
--- a/gdk/src/pixbuf.hg
+++ b/gdk/src/pixbuf.hg
@@ -307,8 +307,22 @@ public:
             const std::vector<Glib::ustring>& option_values);
 
   _IGNORE(gdk_pixbuf_savev)
+  
+  typedef sigc::slot<const char* buf, gsize> SlotSave;
+  
+#if 0 TODO:
+  /** @throws TODO
+   */
+  void save(const SlotSave& slot, const std::string& type);
 
 
+  /** A map of option keys to option values.
+   */
+  typepdef std::map<Glib::ustring, Glib::ustring> SaveValuesMap;
+  
+  void save(const SlotSave& slot, const std::string& type, const SaveValuesMap& options);
+#endif
+
 /* TODO:
 typedef gboolean (*GdkPixbufSaveFunc)   (const gchar *buf,
 					 gsize count,