Is there a better way to analyze the key which was pressed without printing on the screen in C (eg. Arrow keys and Return)?

Question

int Process (void)
{
  for (;;)
  {
    unsigned char Char_Fore = getch();
    if (Char_Fore == 0xE0)
    {
      unsigned char Char_Back = getch();
      switch (Char_Back)
      {
        case 0x48:
          Up();
          break;
        case 0x50:
          Down();
          break;
      }
    }
    else if (Char_Fore == 0x0D)
      Enter();
  }
  return 0;
}

This code can run properly on some machine, but some can't because of the getch() function.

getch() or _getch() is a function declared in conio.h , and the return value would vary if your keyboard is not IBM set 2, or the different compiler were chosen (not Mingw-gcc).

Is there a better way to analyze the key which was pressed in C without printing on the screen and without using a deprecated function like getch() or _getch() in console?

You're already using the winAPI, you don't need conio (I think). — , Jan 11 '14 at 02:52

score 4 · Answer 1 · answered Jan 11 '14 at 03:04

4

I know this isn't really an answer, but I don't have enough reputation to comment.

I recall using a header called termios.h, and using it I could turn off echoing of characters, now this was on a UNIX system, but I'd imagine there's a Windows equivalent.

Here's the pressanykey code with windows.h, perhaps you could adjust it to your needs? http://www.cplusplus.com/forum/articles/7312/#msg33734

answered Jan 11 '14 at 03:04

JMercer

352
2
9

Thanks for your help, but it seems that it is OS-specific. I think I'll give PDCurses a try. – Kevin Dong Jan 11 '14 at 03:11
Now at 60+, you should have "comment everywhere" "Leave comments on other people's posts" – chux - Reinstate Monica Jan 11 '14 at 03:15
Hurray for comments! Good luck!:) – JMercer Jan 11 '14 at 03:16

score 3 · Accepted Answer · edited May 23 '17 at 12:29

3

Check out curses or ncurses, sounds like kind of thing you want to be using.

PDCurses seems to be the Windows option - Is ncurses available for windows?

edited May 23 '17 at 12:29

Community

1
1

answered Jan 11 '14 at 02:52

Graeme

2,971
21
26

Is there a better way to analyze the key which was pressed without printing on the screen in C (eg. Arrow keys and Return)?

2 Answers2