Here is the code it produces for Win32_DisplayConfiguration:

use strict;
use Win32::OLE('in');

use constant wbemFlagReturnImmediately => 0x10;
use constant wbemFlagForwardOnly => 0x20;

my @computers = ("MYPC");
foreach my $computer (@computers) {
   print "\n";
   print "==========================================\n";
   print "Computer: $computer\n";
   print "==========================================\n";

   my $objWMIService = Win32::OLE->GetObject("winmgmts:\\\\$computer\\
+root\\CIMV2") or die "WMI connection failed.\n";
   my $colItems = $objWMIService->ExecQuery("SELECT * FROM Win32_Displ
+ayConfiguration", "WQL",
                  wbemFlagReturnImmediately | wbemFlagForwardOnly);

   foreach my $objItem (in $colItems) {
      print "BitsPerPel: $objItem->{BitsPerPel}\n";
      print "Caption: $objItem->{Caption}\n";
      print "Description: $objItem->{Description}\n";
      print "DeviceName: $objItem->{DeviceName}\n";
      print "DisplayFlags: $objItem->{DisplayFlags}\n";
      print "DisplayFrequency: $objItem->{DisplayFrequency}\n";
      print "DitherType: $objItem->{DitherType}\n";
      print "DriverVersion: $objItem->{DriverVersion}\n";
      print "ICMIntent: $objItem->{ICMIntent}\n";
      print "ICMMethod: $objItem->{ICMMethod}\n";
      print "LogPixels: $objItem->{LogPixels}\n";
      print "PelsHeight: $objItem->{PelsHeight}\n";
      print "PelsWidth: $objItem->{PelsWidth}\n";
      print "SettingID: $objItem->{SettingID}\n";
      print "SpecificationVersion: $objItem->{SpecificationVersion}\n"
+;
      print "\n";
   }
}
[download]

I'm assuming (hopefully not wrongly) that you can set these properties as well as getting them.

--
John.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/win32_displayconfiguration.asp

Looks like all the properties for that class are read-only. Another thing.. I'm 99% sure the WQL interface as microsoft affectionately calls their ODBC'ish interface to WMI can only be used to query information - you can't set things through it.(even if they're not read only) So if you're wanting to modify values or execute methods you must use the WMI object interface.

Update: Here's a paste from MSDN A developer making a query to WMI must use the WMI Query Language (WQL). WQL is a subset of the ANSI standard Structured Query Language (SQL), with WMI-specific extensions. Because WQL is a read-only query language, a developer cannot use WQL to instruct the Windows Management service to update, insert, or delete data in the WMI repository or in a provider. Instead, a developer can only use WQL to retrieve information. For more information, see Querying WMI.

Google comes up with this, and these from microsoft.

And this one for fun. STFM!


holli, /regexed monk/

Dear bA,

At present, the only things we seem to want to change are the video refresh rate and horizontal & vertical resolutions. Whether others will appear in future, I can't say for certain, but it seems likely.

Thanks!

Dismas

In any scripting language I don't know what the advisable way would be to do what you want. Display settings are in the registry, so you could certainly set those items directly with Win32::Registry. That IMHO is risky though, if you happened to change the settings to something that is an invalid/bad combination of values who knows what might happen to the machines. I would check into perhaps some sort of group policy tool. If a policy/template could be leveraged I think that'd be the safest/best approach.