Thread: winsock chat

Code:

bool keyHit(void)
{
  /* Get a handle to console input buffer */
  HANDLE  stdIn = GetStdHandle(STD_INPUT_HANDLE);

  /* Save the console mode so we can restore it later */
  DWORD   saveMode;
  GetConsoleMode(stdIn, &saveMode);

  /* Set the console mode. The primary purpose of this is
   * to make sure ENABLE_LINE_INPUT is disabled. As its name 
   * suggests ENABLE_LINE_INPUT will not return until the end of
   * the line while we are interested in individual characters. */ 
  SetConsoleMode(stdIn, ENABLE_PROCESSED_INPUT);

  bool  ret = false;

  /* This waits 1 millisecond for the input buffer to be signalled
   * The input buffer enters the signalled state when one or more characters
   * are available. If the input buffer is signalled WaitForSingleObject()
   * will return WAIT_OBJECT_0 and we set ret to true to indicate that there
   * is character(s) in the input buffer. If the input buffer does not become
   * signalled in the timeout period it will return WAIT_TIMEOUT. */
  if (WaitForSingleObject(stdIn, 1) == WAIT_OBJECT_0) ret = true;

  /* We restore the console mode that we saved at the start of the function. */
  SetConsoleMode(stdIn, saveMode);

  /* We return the value of ret */
  return(ret);
}

getChar() is very similar, except that it uses ReadConsole() to actually read a character from the console input buffer.

i cant press f1, i dont have msdn installed