Not a stupid question at all - its something I was looking for, and was
(and still am) surprised not to find a cross platform implementation.
It must be possible - for a short while I dabbled with yabasic and
there the same source code would recognise a keypress in both Windows
and Linux.
My solution was:-
# Await key and return code - dos only
def _keycode_msvcrt(self):
#Loop till key pressed
while 1:
if msvcrt.kbhit():
k=ord(msvcrt.getch())
if k==0 or k==224: #Special keys
k=1000+ord(msvcrt.getch()) #return 1000+ 2nd code
pass
break
pass
pass
return k
# Await key and return code - linux only
def _keycode_linux2(self):
# Loop till key pressed
# Set up keycode list
a=[0,0,0,0,0,0]
# Press a key and populate list
try:
os.system('stty -icanon')
os.system('stty -echo')
a[0]=ord(sys.stdin.read(1))
if a[0]==27:
a[1]=ord(sys.stdin.read(1))
if a[1]==91:
a[2]=ord(sys.stdin.read(1))
if (a[2]>=49 and a[2]<=54) or a[2]==91:
a[3]=ord(sys.stdin.read(1))
if a[3]>=48 and a[3]<=57:
a[4]=ord(sys.stdin.read(1))
finally:
os.system('stty echo')
os.system('stty icanon')
# Decode keypress
if a==[ 10, 0, 0, 0, 0, 0]: k= 13 # Enter
elif a==[ 27, 27, 0, 0, 0, 0]: k= 27 # Esc (double
press)
elif a==[ 27, 91, 91, 65, 0, 0]: k=1059 # F1
elif a==[ 27, 91, 91, 66, 0, 0]: k=1060 # F2
elif a==[ 27, 91, 91, 67, 0, 0]: k=1061 # F3
elif a==[ 27, 91, 91, 68, 0, 0]: k=1062 # F4
elif a==[ 27, 91, 91, 69, 0, 0]: k=1063 # F5
elif a==[ 27, 91, 49, 55, 126, 0]: k=1064 # F6
elif a==[ 27, 91, 49, 56, 126, 0]: k=1065 # F7
elif a==[ 27, 91, 49, 57, 126, 0]: k=1066 # F8
elif a==[ 27, 91, 50, 48, 126, 0]: k=1067 # F9
elif a==[ 27, 91, 50, 49, 126, 0]: k=1068 # F10
elif a==[ 27, 91, 50, 51, 126, 0]: k=1133 # F11
elif a==[ 27, 91, 50, 52, 126, 0]: k=1134 # F12
elif a==[ 27, 91, 50, 126, 0, 0]: k=1082 # Ins
elif a==[ 27, 91, 51, 126, 0, 0]: k=1083 # Del
elif a==[ 27, 91, 49, 126, 0, 0]: k=1071 # Home
elif a==[ 27, 91, 52, 126, 0, 0]: k=1079 # End
elif a==[ 27, 91, 53, 126, 0, 0]: k=1073 # Pg Up
elif a==[ 27, 91, 54, 126, 0, 0]: k=1081 # Pg Dn
elif a==[ 27, 91, 65, 0, 0, 0]: k=1072 # Up
elif a==[ 27, 91, 66, 0, 0, 0]: k=1080 # Down
elif a==[ 27, 91, 68, 0, 0, 0]: k=1075 # Left
elif a==[ 27, 91, 67, 0, 0, 0]: k=1077 # Right
elif a==[127, 0, 0, 0, 0, 0]: k= 8 # Backspace
else: k=a[0] # Ascii code
# Done
return k
# Return key code
def key(self,case='NONE'):
# Get OS name and call platform specific function
a=sys.platform
if a=='linux2': #Linux (works on Fedora
Core 1 and 3)
k=self._keycode_linux2()
elif a=='win32': #windows
k=self._keycode_msvcrt()
else: #unknown
k=ord(raw_input())
# Adjust case
if case=='UPPER':
if k>=97 and k<=122:
k=k-32
if case=='LOWER':
if k>=65 and k<=90:
k=k+32
# Done
return k
A bit clumsy, I know (for example it needs a a double press to
recognise the escape key), and I'm not sure I understand why it works,
but for me it was a passable solution.
Peter
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