getch statement

I am trying to write a program that takes a single character off the keyboard without having to press the enter key. The getch statement is supposed to do that but it does not. I am using Visual Studio 2008.

As an example:

char input;

Code:

---

input = getch();

switch (input)
{
    case 'A':
        // Stuffing.
        break;
    case 'B':
        // Stuffing.
        break;
    case 'C':
        // Stuffing.
        break;
}

---

What is the value of input? (perhaps 'a', 'b' or 'c'?)

Some people through out the fact that getch() isn't a standard function. But I think if you are going to use non-standard functions, there are better ways to get keyboard input for a Windows system.

Example:

Code:

---

#include <windows.h>
#define PRESSED(x)  ((x) & 0x80000000)

int main(void)
{
  char keys[256];

  while(1)
  {
    GetKeyboardState(keys);

    if(PRESSED(keys[VK_A]))
      printf("\rA key is down!");
    else
      printf("\rA is not being pressed!");
  }

  return 0;
}

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So far as I'm aware, there is no conio.h header in Visual Studio, hence no getch function.

Quote:

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Originally Posted by Elysia

So far as I'm aware, there is no conio.h header in Visual Studio, hence no getch function.

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strictly speaking, one doesn't preclude the other in those two statements.

There is, somewhere in the MS library code, an implementation of getch().

--
Mats

Quote:

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Originally Posted by Elysia

So far as I'm aware, there is no conio.h header in Visual Studio, hence no getch function.

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What version are you using?
I've seen it in every version from 6.0 to 2008.

I tried it in 2008, although now that it I look at it, the code I was trying used conio, not conio.h.
That was the problem...