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From: Owen <100607 DOT 3203 AT CompuServe DOT COM>
Newsgroups: comp.os.msdos.djgpp
Subject: Keyboard handler
Date: 8 Oct 1995 12:47:23 GMT
Organization: CompuServe, Inc. (1-800-689-0736)
Lines: 24
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Dj-Gateway: from newsgroup comp.os.msdos.djgpp

I am using V2 beta of DJGPP and trying to replace the default 
keyboard interupt (9), I can do this in Turbo C++ but I don't 
quite understand the DPMI functions as the info program explains 
them. when i run the program below it crashes if i press a key.
could someone help me.  Thanks for and help in advance

int keys;
void keyb_handler(void);
void keyb_handler()
{ keys++; }
main()
{
long delay,tmp;
__dpmi_paddr old_handler,new_handler;
__dpmi_get_protected_mode_interrupt_vector(9,&old_handler);
new_handler.offset32=(long)keyb_handler;
new_handler.selector=_go32_my_ds();
if (__dpmi_set_protected_mode_interrupt_vector(9,&new_handler)==0)
      {
      for (delay=0; delay<10000 ; delay++) tmp++;
      __dpmi_set_protected_mode_interrupt_vector(9,&old_handler);
      printf("%d",keys);
      }
}