Get xbmcgui Window properties

Hi,

Anyone familiair with getting (all) available Window properties to be read in Python?
I tried the following examples:

a = str(xbmcgui.Window(getCurrentWindowId()).getProperty(‘Addon.Description’))
b = str(xbmcgui.Window(getCurrentWindowId()).getProperty(‘Category’))
c = str(xbmcgui.Window(getCurrentWindowId()).getListItem(‘1’))
d = str(xbmcgui.Window(getCurrentWindowId()).getListItem(1))
e = str(xbmcgui.Window(getCurrentWindowId()).getListSize)
f = str(xbmcgui.Window(getCurrentWindowId()).getListItem(‘Icon’))

None of them seem to return anything.

Kind regards,
Jeroen