GdkPixbuf       Gtk2::Gdk::Pixbuf
PangoAlignment  Gtk2::Pango::Alignment
PangoAttrList   Gtk2::Pango::AttrList
PangoEllipsizeMode      Gtk2::Pango::EllipsizeMode
PangoLayout     Gtk2::Pango::Layout
PangoWrapMode   Gtk2::Pango::WrapMode
timestamp       seconds from the System Epoch
GstElement      GStreamer::Element
ClutterUnit     units
ClutterFixed    fixed point number
ClutterAngle    fixed point angle
CoglHandle      handle
CoglTextureVertex       texture vertex