al_get_native_file_dialog_path - Man Page

#include <allegro5/allegro_native_dialog.h>

const char *al_get_native_file_dialog_path(
   const ALLEGRO_FILECHOOSER *dialog, size_t i)

Returns one of the selected paths with index i. The index should range from 0 to the return value of al_get_native_file_dialog_count(3) -1.

al_create_native_file_dialog(3).