Thanks.
Will check it out, but, BTW, the documentation isn't perfectly rendered as
far as I'm concerned, since I find mailing lists the best place to do
research on these matters, although have looked through documentation
already, searched around places like codeproject, done a few google
searches, etc., but didn't find a real answer until now, but, like you said,
since it's not really platform independent, I think will for now leave it
alone as such.
Thanks again for help, either way
Jacob Kruger
Blind Biker
Skype: BlindZA
'...fate had broken his body, but not his spirit...'
----- Original Message -----
From: "Tim Roberts" <t...@probo.com>
To: "Python-Win32 List" <python-win32@python.org>
Sent: Tuesday, July 05, 2011 9:20 PM
Subject: Re: [python-win32] More relating to catching cursor keystrokes in
command line
Jacob Kruger wrote:
The following seems to actually work relatively consistently after just a
bit of testing:
#bit of code sample
while True:
sKey = msvcrt.getwch()
if str(ord(sKey)) == "77":
#end of code sample
And then on this windows7 machine, the following are the strings that
seem to match:
72 = up
75 = left
77 = right
80 = down
"SEEM" to match? Are you reading any of the replies in this thread?
Did you read my explanation earlier? Have you read ANY of the
documentation? You don't need to guess about this. The behavior of
getch in DOS is well-defined.
The arrow keys (ALL of the non-ASCII keys, in fact) generate TWO bytes
in getch. The first byte is 224 (or hex 0xE0). That is a special code
that tells you "this is the first byte of a two-byte key code). The
second byte will then be the set you have posted.
What on earth is the point of converting to string with
"str(ord(sKey))"? Why wouldn't you just write "if ord(sKey) == 77"?
So, a more general solution might be:
def getKeyCode():
x = ord(msvcrt.getch())
if x != 224: return x
return (x << 8) | ord(msvcrt.getch())
Now, you can tell the difference between up-arrow and the H key.
k = getKeyCode()
if k == ord('H'):
print "H key pressed"
elif k == 0xE048:
print "Up-arrow pressed"
Anyway, this is just testing, and like you said, would most likely not
work too cross platform as such, but anyway.
It DEFINITELY does not work cross-platform. That key-code sequencing is
a remnant of the BIOS in PCs, and this getch behavior is leftover from
MS-DOS. Linux requires an entirely different approach.
--
Tim Roberts, t...@probo.com
Providenza & Boekelheide, Inc.
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