-#define MODEST_TYPE_MAIL_HEADER_VIEW (modest_mail_header_view_get_type ())
-#define MODEST_MAIL_HEADER_VIEW(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), MODEST_TYPE_MAIL_HEADER_VIEW, ModestMailHeaderView))
-#define MODEST_MAIL_HEADER_VIEW_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), MODEST_TYPE_MAIL_HEADER_VIEW, ModestMailHeaderViewClass))
-#define MODEST_IS_MAIL_HEADER_VIEW(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), MODEST_TYPE_MAIL_HEADER_VIEW))
-#define MODEST_IS_MAIL_HEADER_VIEW_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), MODEST_TYPE_MAIL_HEADER_VIEW))
-#define MODEST_MAIL_HEADER_VIEW_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), MODEST_TYPE_MAIL_HEADER_VIEW, ModestMailHeaderViewClass))
+/* convenience macros */
+#define MODEST_TYPE_MAIL_HEADER_VIEW (modest_mail_header_view_get_type())
+#define MODEST_MAIL_HEADER_VIEW(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),MODEST_TYPE_MAIL_HEADER_VIEW,ModestMailHeaderView))
+#define MODEST_IS_MAIL_HEADER_VIEW(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),MODEST_TYPE_MAIL_HEADER_VIEW))
+#define MODEST_MAIL_HEADER_VIEW_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE((obj),MODEST_TYPE_MAIL_HEADER_VIEW,ModestMailHeaderViewIface))