From: x1 <caldridge@...>
Date: 2005-12-08T14:35:23+09:00
Subject: Re: Win32OLE: Output parameters, Dispatch IDs

I have not been able to figure anything out yet myself.

Do you know off hand how one would be able to find any variable
names(if exist) that are pointing to a given object?

For instance when looking at ObjectSpace.cantremembermethodname(Array)
You get something like:
["notepad", nil, nil, 333]

How would one be able to determine the object id and / or any variable
names associated with it?

On 12/7/05, Dave Burt <dave@burt.id.au> wrote:
> Hi,
>
> x1 recently asked about an issue with a WMI script that had an output parameter.
> I guess you can get a result from an output parameter via WIN32OLE#_invoke (with
> VT_BYREF?) if you have the Dispatch ID for the method. But for a few WMI objects
> I've seen recently, I haven't been able to get a WIN32OLE_METHOD instance for a
> lot of methods, even ones that I can invoke. For example:
>
> # Get a Win32_Process WMI object
> wmi_svc = WIN32OLE.connect("winmgmts:\\\\.\\root\\cimv2:Win32_Process")
> # Try to get the method
> wmi_svc.ole_method("Create")  #=> WIN32OLERuntimeError: Not found Create
> # Invoke the method
> wmi_svc.invoke("Create", "notepad", nil, nil, nil)  #=> (Creates notepad.exe
> process)
>
> That last parameter is an output parameter which should return the PID of the
> created process as a uint32.
>
> Is there a way I can get info on a method like that, and how do I get the result
> of an output parameter?
>
> Cheers,
> Dave
>
>
>