void api_activate_surface(char const *appid, char const *role, char const *drawing_area, const reply_func &reply);
void api_deactivate_surface(char const *appid, char const *role, const reply_func &reply);
void api_enddraw(char const *appid, char const *role);
+ bool api_client_set_render_order(const char *appid, const std::vector<std::string> &render_order);
result<json_object *> api_get_display_info();
result<json_object *> api_get_area_info(char const *role);
void send_event(char const *evname, char const *label);