kbhit() portability

Is there a portable version of kbhit()? Perhaps a windows function?

If the function were specific to Windows then it wouldn't be portable, would it? I believe the API function GetKeyboardState() does what you want, but there's no truly portable way to get the functionality of kbhit.

-Prelude

Don't you hate that?

If you really cannot live without this piece of cr*p function...then here's a Windows version that I just wrote.......

Code:

---

void kbhit(void){
HANDLE hIn = GetStdHandle(STD_INPUT_HANDLE);
INPUT_RECORD ip;//Holds keyboard event data
DWORD dwResult;
while(1){
ReadConsoleInput(hIn,&ip,1,&dwResult);//Get event
if(ip.EventType == KEY_EVENT)//Is it keyboard?
break;
}
return;
}

---

dont forget the windows.h

Using what Fordy gave me, I wrote this:

Code:

---

bool hitkb(void)
{
        HANDLE hIn = GetStdHandle(STD_INPUT_HANDLE);
        INPUT_RECORD ip;//Holds keyboard event data
        DWORD dwResult;

        ReadConsoleInput(hIn,&ip,1,&dwResult);
        if(ip.EventType == KEY_EVENT)
    return true;

        return false;
}

---

It does not, however, give the desired effect when I use it in a loop.
Example:

Code:

---

int main()
{
int Frames;
while(!hitkb())
{
Frames++;
}
cout<<Frames;
return 0;
}

---

This program displays 0 even if you never touch the keyboard.

Is there an extremely low level way to do it maybe?

It is possible to use a BIOS interruption. But I'm not sure how portable it willt be :rolleyes:
At least PC x86 compatible.
kbhit() should be the same call of (low level, BIOS interruption):

Code:

---

asm
{
  mov ah, 1
  int 16h
}

---

if ZF = 0 (zero flag), a key was pressed
kbhit() should return true is a key was pressed
Like kbhit(), the key code is not removed from keyboard buffer, using this call.

I could write using the regs struct, but cannot remember it and I dont know if it is portable.

I'm sorry, I don't understand....

I've never gone into this stuff before; please explain.