WMI functions in DDK XP

NTDEV
1

Hi,
In Win2k SDK there were the WinUm.h header and WmiP.lib library that
presented c-style( not COM ) access to the WMI functions.
I did not found anything like this in WinXP DDK and also the
documentation for these API disappeared from MSDN. I also did not found
any information that these function are obsolete - they simple
disappeared.
Can you please point me to
-any documentation on these APIs?
-if is - substantial( but not COM ) APIs?
-Any possibility to use WMI in a simple C application?

Lev Zlotin

2

These are undocumented functions and not for public consumption. The
COM stuff isn’t too bad if you have a sample to start with, also
accessing WMI via C# or windows scripting host (like a vb script) is
rather easy.

d

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Zlotin, Lev
Sent: Friday, March 10, 2006 10:38 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] WMI functions in DDK XP

Hi,
In Win2k SDK there were the WinUm.h header and WmiP.lib library that
presented c-style( not COM ) access to the WMI functions.
I did not found anything like this in WinXP DDK and also the
documentation for these API disappeared from MSDN. I also did not found
any information that these function are obsolete - they simple
disappeared.
Can you please point me to
-any documentation on these APIs?
-if is - substantial( but not COM ) APIs?
-Any possibility to use WMI in a simple C application?

Lev Zlotin

Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256

To unsubscribe, visit the List Server section of OSR Online at
http://www.osronline.com/page.cfm?name=ListServer

3

Hi,
1.Can you recommend a sample with events( p-states ) handling?
2.As I understand, using the COM interface for events required from my
application to become COM server. Is it right?
2.Do you know, is these accesses very CPU consuming?

Lev Zlotin
xxxxx@Intel.com
iNet: 8-465-6740
tel: 972-4-865-6740

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Doron Holan
Sent: Saturday, March 11, 2006 8:53 AM
To: Windows System Software Devs Interest List
Subject: RE: [ntdev] WMI functions in DDK XP

These are undocumented functions and not for public consumption. The
COM stuff isn’t too bad if you have a sample to start with, also
accessing WMI via C# or windows scripting host (like a vb script) is
rather easy.

d

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Zlotin, Lev
Sent: Friday, March 10, 2006 10:38 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] WMI functions in DDK XP

Hi,
In Win2k SDK there were the WinUm.h header and WmiP.lib library that
presented c-style( not COM ) access to the WMI functions.
I did not found anything like this in WinXP DDK and also the
documentation for these API disappeared from MSDN. I also did not found
any information that these function are obsolete - they simple
disappeared.
Can you please point me to
-any documentation on these APIs?
-if is - substantial( but not COM ) APIs?
-Any possibility to use WMI in a simple C application?

Lev Zlotin

Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256

To unsubscribe, visit the List Server section of OSR Online at
http://www.osronline.com/page.cfm?name=ListServer

Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256

To unsubscribe, visit the List Server section of OSR Online at
http://www.osronline.com/page.cfm?name=ListServer

4
  1. I don’t have any offhand, did you try looking through the entire
    DDK?
  2. I don’t know, but if so, I think it is a local COM server, the WBEM
    docs should be more clear (and you might want to look in the platform
    SDK or the WBEM SDK (if that still exists).
  3. it should not affect performance, this stuff is rather low overhead
    compared to the rest of what is going on in the OS

d

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Zlotin, Lev
Sent: Saturday, March 11, 2006 12:48 AM
To: Windows System Software Devs Interest List
Subject: RE: [ntdev] WMI functions in DDK XP

Hi,
1.Can you recommend a sample with events( p-states ) handling?
2.As I understand, using the COM interface for events required from my
application to become COM server. Is it right?
2.Do you know, is these accesses very CPU consuming?

Lev Zlotin
xxxxx@Intel.com
iNet: 8-465-6740
tel: 972-4-865-6740

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Doron Holan
Sent: Saturday, March 11, 2006 8:53 AM
To: Windows System Software Devs Interest List
Subject: RE: [ntdev] WMI functions in DDK XP

These are undocumented functions and not for public consumption. The
COM stuff isn’t too bad if you have a sample to start with, also
accessing WMI via C# or windows scripting host (like a vb script) is
rather easy.

d

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Zlotin, Lev
Sent: Friday, March 10, 2006 10:38 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] WMI functions in DDK XP

Hi,
In Win2k SDK there were the WinUm.h header and WmiP.lib library that
presented c-style( not COM ) access to the WMI functions.
I did not found anything like this in WinXP DDK and also the
documentation for these API disappeared from MSDN. I also did not found
any information that these function are obsolete - they simple
disappeared.
Can you please point me to
-any documentation on these APIs?
-if is - substantial( but not COM ) APIs?
-Any possibility to use WMI in a simple C application?

Lev Zlotin

Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256

To unsubscribe, visit the List Server section of OSR Online at
http://www.osronline.com/page.cfm?name=ListServer

Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256

To unsubscribe, visit the List Server section of OSR Online at
http://www.osronline.com/page.cfm?name=ListServer

Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256

To unsubscribe, visit the List Server section of OSR Online at
http://www.osronline.com/page.cfm?name=ListServer