+gboolean modest_ui_dimming_rules_on_cancel_sending (ModestWindow *win, gpointer user_data);
+gboolean modest_ui_dimming_rules_on_send_receive (ModestWindow *win, gpointer user_data);
+gboolean modest_ui_dimming_rules_on_add_to_contacts (ModestWindow *win, gpointer user_data);