al_ustr_vappendf (3alleg5)

• #include <allegro5/allegro.h>
  
  bool al_ustr_vappendf(ALLEGRO_USTR *us, const char *fmt, va_list ap)
  
  

Like al_ustr_appendf(3alleg5) but you pass the variable argument list directly, instead of the arguments themselves. See al_ustr_newf(3alleg5) about the "%s" and "%c" specifiers.

Returns true on success, false on error.

al_ustr_appendf(3alleg5), al_ustr_append(3alleg5)