pythonCE GetSystemPowerState windows api

[lorenzo.mentaschi at yahoo.it]

On Apr 25, 6:19 pm, Thomas Heller <thel... at python.net> wrote:
> lorenzo.mentas... at yahoo.it schrieb:
>
>
>
> > Hi all,
> > I need to call GetSystemPowerState windows api from pythonCE, because
> > I need to know if a windows ce 5 device is in sleep/off status.
> > I can find this api in ctypes.windll.coredll, but I cannot figure out
> > how to pass parameters to this procedure: msdn giude (
> >http://msdn.microsoft.com/en-us/library/ms899319.aspx) speaks about 3
> > parameters, of wich 2 are output: a "LPWSTR pBuffer" and a "PDWORD
> > pFlags". Returned value of the call is an exit status code
> > rappresenting if call succeded or failed.
>
> > I tried to call this api in several ways, but obtained always exit
> > code 87 (meaning that parameters are wrong) or 122 (meaning "pBuffer"
> > variable is too small, in this case I passed None as pBuffer, since
> > I'm interested only in pFlags result).
>
> > Have you any idea? Maybe another api or way to perform this simple
> > task?
>
> Python 2.5 (release25-maint, Dec 19 2006, 23:22:00) [MSC v.1201 32 bit (ARM)] on win32>>> from ctypes import *
> >>> d=windll.coredll
> >>> d.GetSystemPowerState
>
> <_FuncPtr object at 0x0016EC60>
>
> >>> p=create_unicode_buffer(256)
> >>> flags=c_ulong()
> >>> f=d.GetSystemPowerState
> >>> f(p,256,byref(flags))
> 0
> >>> p.value
> u'on'
> >>> flags
> c_ulong(268500992L)
> >>> hex(flags.value)
> '0x10010000L'
>
> Thomas

Thank you very much! :)