debian man page for register_font_file_type

register_font_file_type(3alleg4)				  Allegro manual				  register_font_file_type(3alleg4)

NAME
       register_font_file_type - Register a new font loading function. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       void register_font_file_type(const char *ext, FONT *(*load)(const char *filename, RGB *pal, void *param));

DESCRIPTION
       Informs the load_font() functions of a new file type, providing a routine to read fonts in this format. The function you supply must follow
       the following prototype:

	  FONT *load_my_font(const char *filename, RGB *pal, void *param)
	  {
	     ...
	  }

       The pal parameter can optionally be used to return a palette for the FONT.  The parameter param can be anything you like: you can use  this
       to  pass  information  to  your loading routine, such as for instance the font height, the character range to load or the index number of a
       font in a datafile.  If you choose to write your own font loading code, your function should be prepared to deal with a value of  NULL  for
       either of these parameters.

SEE ALSO
       load_font(3alleg4)

Allegro 							   version 4.4.2				  register_font_file_type(3alleg4)