Re: Problems evaluating WMI method

[Duarte Silva <duartejcsilva@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 1326 bytes --]

On Wednesday 01 October 2008 21:26:28 Carlos Corbacho wrote:
> On Wednesday 01 October 2008 21:13:50 Duarte Silva wrote:
> > I got the correct answer when I do instance = 0x33 and method_id = 0x01.
> > So, I looked at hp-wmi.c code and acer-wmi.c and they depend on this
> > instance and method_id. But my laptop doesnt seem to depend.
>
> acer-wmi doesn't rely on the instance_id, it just gets ignored. It does use
> the method_id though.
>
> > Is this
> > instance and method_id a WMI standart or is it a HP and Acer laptop
> > specific? My laptop is a LG.
>
> Yes, these are part of the WMI standard (in that, they need to be passed
> in). I would recommend you read through the spec:
>
> http://web.archive.org/web/20071011004327/http://www.microsoft.com/whdc/sys
>tem/pnppwr/wmi/wmi-acpi.mspx
>
> Essentially - you need to pass the instance and method id's, but what
> values you pass and their meaning is completely vendor specific (which is
> pretty much a good summary of ACPI-WMI in general).
>
> -Carlos

Oh, I got it, so it doesnt have a standart meaning, now it makes sence. In my 
case when you pass 0x01 as the method_id you are saying you want to get the 
value defined by the instance variable. Other values for the method_id can 
mean other actions. Thanks for the help Carlos :)

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 489 bytes --]