result<int> api_request_surface(char const *appid, char const *drawing_name);
char const *api_request_surface(char const *appid, char const *drawing_name, char const *ivi_id);
+ void api_set_role(char const *appid, char const *drawing_name, unsigned pid);
void api_activate_surface(char const *appid, char const *drawing_name, char const *drawing_area, const reply_func &reply);
void api_deactivate_surface(char const *appid, char const *drawing_name, const reply_func &reply);
void api_enddraw(char const *appid, char const *drawing_name);