#include <graphics.h>
int installuserfont(char *name);
 

name is a file name in the current directory (pathname is not supported)
of a font file containing a stroked font. Up to twenty fonts can be
installed at one time.

/* installuserfont example */
 
#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
 
/* function prototype */
void checkerrors(void);
int main(void)
{
   /* request autodetection */
   int gdriver = DETECT, gmode;
   int userfont;
   int midx, midy;
 
   /* initialize graphics and local variables */
   initgraph(&gdriver, &gmode, "");
 
   midx = getmaxx() / 2;
   midy = getmaxy() / 2;
 
   /* check for any initialization errors */
   checkerrors();
 
   /* install a user-defined font file */
 
   userfont = installuserfont("USER.CHR");
 
   /* check for any installation errors */
   checkerrors();
 
   /* select the user font */
   settextstyle(userfont, HORIZ_DIR, 4);
 
   /* output some text */
   outtextxy(midx, midy, "Testing!");
 
   /* clean up */
   getch();
   closegraph();
   return 0;
}
 
/* check for and report any graphics errors */
void checkerrors(void)
{
   int errorcode;
 
   /* read result of last graphics operation */
   errorcode = graphresult();
 
   if (errorcode != grOk) {
printf("Graphics error: %s\n", grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
 
exit(1);
   }
}

settextstyle

  no output of example at the moment
  do not hesitate and add it...