register_font_file_type - Register a new font loading function. Allegro game
programming library.
#include <allegro.h>
void register_font_file_type(const char *ext, FONT
*(*load)(const char *filename, RGB *pal, void *param));
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.