[Allegro] Manual do biblioteki alfont?

#include <allegro.h>
#include <alfont.h>
#include <string>
#include <iostream>
#include <conio.h>

using namespace std;

int main()
{
    allegro_init();
    install_mouse();
    install_keyboard();
    set_color_depth( 32 );
   
   
    /*
        * initializes the library. You must run this, otherwise you're program will crash.
        */
    alfont_init();
    set_gfx_mode( GFX_AUTODETECT, 800, 600, 0, 0 );
   
    BITMAP * background = load_bitmap( "detail/Sunset.bmp", 0 );
    BITMAP * buffer = create_bitmap( 800, 600 );
    ALFONT_FONT * copperplate_font = alfont_load_font( "detail/COPRGTB.TTF" );
   
    alfont_set_font_size( copperplate_font, 36 );
   
    string text = "This is a test of fonts.....";
    const int blue = makecol( 50, 30, 180 );
   
    alfont_textprintf_ex( buffer, copperplate_font, 5, 5, blue, - 1, text.c_str() );
   
    blit( buffer, screen, 0, 0, 0, 0, 800, 600 );
   
    while( !key[ KEY_ESC ] )
    { };
   
    /*
        * you must ALWAYS run alfont_exit. Do not forget.
        */
    alfont_exit();
   
   
    return 0;
} END_OF_MAIN();