rtk_widget *rtk_create_button(rtk_widget *par, const char *str, rtk_callback cbfunc);
rtk_widget *rtk_create_iconbutton(rtk_widget *par, rtk_icon *icon, rtk_callback cbfunc);
rtk_widget *rtk_create_label(rtk_widget *par, const char *text);
rtk_widget *rtk_create_button(rtk_widget *par, const char *str, rtk_callback cbfunc);
rtk_widget *rtk_create_iconbutton(rtk_widget *par, rtk_icon *icon, rtk_callback cbfunc);
rtk_widget *rtk_create_label(rtk_widget *par, const char *text);