[gtkmm] Gtk::ColorChooser::get_rgba(): Add documentation

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 6ff643faf7d104974582cbe92799a151ae1d2326
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Mon Dec 16 14:50:38 2013 +0100

    Gtk::ColorChooser::get_rgba(): Add documentation

 gtk/src/colorchooser.hg |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/gtk/src/colorchooser.hg b/gtk/src/colorchooser.hg
index 59d535b..dfc040d 100644
--- a/gtk/src/colorchooser.hg
+++ b/gtk/src/colorchooser.hg
@@ -45,7 +45,10 @@ class ColorChooser : public Glib::Interface
   _CLASS_INTERFACE(ColorChooser, GtkColorChooser, GTK_COLOR_CHOOSER, GtkColorChooserInterface)
 
 public:
-  //TODO: Documentation.
+  /** Gets the currently selected color.
+   * @return The currently selected color.
+   * @newin{3,4}
+   */
   Gdk::RGBA get_rgba() const;
   _IGNORE(gtk_color_chooser_get_rgba)