🚀 go-pugleaf

In article <rqjbpINNiqv@matt.ksu.ksu.edu>, kentiler@matt.ksu.ksu.edu (Kent Iler) writes:
> Hello,
>    Is there a way to test to see if a key is already pressed.  Let say I run
> this program from the autoexec, and I want to see if the space bar is pressed.
> If it is I want to do one thing, if not I want to do another.  I don't want to
> wait there for a key to be pressed, just see if it already is.  I have C++ and
> Turbo Pascal to program with.  Thanks.
> 						--Kent


Try this:

  if (bioskey(1)==0) /* No key pressed */
  else /* key pressed */

  bioskey is defined in bios.h,  but here is a generic version of it:

  int bioskey(int cmd)
  {
    struct REGPACK rp;
    rp.r_ax=cmd<<8;
    intr (0x16, &rp);
    if ( ((rp.r_flags&0x40)==0x40) && (cmd==1) )
      return 0; /* ZF set if no key pressed, return 0 */
    return rp.r_ax; /* else AH=Scan Code, AL=ASCII Char */
  }

Aki.
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