typedef void (*VikLayerFuncAddMenuItems) (VikLayer *,GtkMenu *,gpointer); /* gpointer is a VikLayersPanel */
typedef gboolean (*VikLayerFuncSublayerAddMenuItems) (VikLayer *,GtkMenu *,gpointer, /* first gpointer is a VikLayersPanel */
gint,gpointer,GtkTreeIter *);
typedef void (*VikLayerFuncAddMenuItems) (VikLayer *,GtkMenu *,gpointer); /* gpointer is a VikLayersPanel */
typedef gboolean (*VikLayerFuncSublayerAddMenuItems) (VikLayer *,GtkMenu *,gpointer, /* first gpointer is a VikLayersPanel */
gint,gpointer,GtkTreeIter *);