React on keypress event in XBMC script?

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Hi there,

Is it possible to react on keypress in a XBMC script?

For example, something like this:
import xbmc, xbmcgui

class MyWindow(xbmcgui.Window):
def __init__(self):
pass

def onKeyPress(key):
xbmcgui.Dialog().ok("Key", "You pressed: " + key)

Thanks in advance!

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Found a workaround:

def doAction(action):
if action == 7: # ACTION_PARENT_DIR
doWhatIWantToDoAtKeyPress()

Would still like to know if the scenario I first described is possible though...