gui_strlen - Returns the length of a string in pixels. Allegro game programming library.

       Helper  function  for  use  by  the  GUI routines. Returns the length of a string in pixels, ignoring '&'
       characters.

       gui_strlen - Returns the length of a string in pixels. Allegro game programming library.

gui_textout_ex(3alleg4)

Allegro                                           version 4.4.3                              gui_strlen(3alleg4)

#include<allegro.h>intgui_strlen(constchar*s);