al_draw_ustr - Allegro 5 API

       Like al_draw_text(3alleg5), except the text is passed as an ALLEGRO_USTR instead of a NUL-terminated char
       array.

       al_draw_ustr - Allegro 5 API

al_draw_text(3alleg5), al_draw_justified_ustr(3alleg5), al_draw_multiline_ustr(3alleg5)

Allegro reference manual                                                                   al_draw_ustr(3alleg5)

              #include <allegro5/allegro_font.h>

              void al_draw_ustr(const ALLEGRO_FONT *font,
                 ALLEGRO_COLOR color, float x, float y, int flags,
                 const ALLEGRO_USTR *ustr)