WMI calls for virtualization - not returning values

Hi,
I am using WMI calls to ge the Virtual system information of a VM on
Hyper-V using Ruby.
Below is my code:

require ‘pp’
require ‘win32ole’
wmi = WIN32OLE.connect(“winmgmts://./root/virtualization”)

processes = wmi.ExecQuery(“select * from
MsVM_virtualSystemManagementService”)
temp = nil
result = Array.new
input = nil

for process in processes do
pp process.Caption
pp process.Name
pp ret = process.GetSummaryInformation(input,
[0,1,2,3,4,100,101,102,103,104,105,106,107,108],
result)
end
pp result

ret is 0. which is for success. But ‘result’ is empty. Iam know that Iam
missing out something. Please do let me know how to make this work. Iam
stuck here.

Thanks in Advance,
Shreya

On Mon, Jul 13, 2009 at 3:20 AM, Shreya Govind <
[email protected]> wrote:

processes = wmi.ExecQuery("select * from
result)
end
pp result

ret is 0. which is for success. But ‘result’ is empty. Iam know that Iam
missing out something. Please do let me know how to make this work. Iam
stuck here.

Check WIN32OLE::ARGV for the result. This is explained here:

http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/169830

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