7

在 c++ 中,有一个函数 getch(),它返回您按下的键的变量 - 就像 enter 将是 13。我怎么能在 perl 中做到这一点?

4

2 回答 2

9

您可以使用Term::ReadKey

于 2010-06-07T08:34:45.910 回答
4

简而言之:

$x = ord(getc);

详细的:

$c = getc(STDIN);
$x = ord($c);

来自perldoc -f getc

"However, it cannot be used by itself to fetch single 
characters without waiting for the user to hit enter. 
For that, try something more like":

   1.  if ($BSD_STYLE) {
   2. system "stty cbreak </dev/tty >/dev/tty 2>&1";
   3. }
   4. else {
   5. system "stty", '-icanon', 'eol', "\001";
   6. }
   7.
   8. $key = getc(STDIN);
   9.
  10. if ($BSD_STYLE) {
  11. system "stty -cbreak </dev/tty >/dev/tty 2>&1";
  12. }
  13. else {
  14. system 'stty', 'icanon', 'eol', '^@'; # ASCII NUL
  15. }
  16. print "\n";
于 2010-06-07T08:38:28.663 回答