Energieverwaltung von Netzwerkadaptern und USB Root Hub

[delphisnoopy]

Hab mich jetzt auch etwas durch die ganzen WMI Funtionen geschlagen. Bei den WMI Klassen

Win32_NetworkAdapter bzw. Win32_USBHub

kann ich die gesuchten Devices finden, aber bei der Abfrage der Attribute

PowerManagementCapabilities und PowerManagementSupported

bekomme ich nicht die gesuchten Einstellungen, sondern nur NULL zurück...

[t.roller]

PowerManagementCapabilities sind Arrays, die man entsprechend auswerten muss.

[delphisnoopy]

ok, kannst du vielleicht ein Beispiel geben wie ich diese auslese?

[t.roller]

Wenn der WMI-Provider bestimmte Daten nicht zur Verfügung stellt, kommt trotzdem nichts.

Delphi-Quellcode:

//-----------------------------------------------------------------------------------------------------
//     This code was generated by the Wmi Delphi Code Creator http://theroadtodelphi.wordpress.com
//     Version: 1.8.3.0 
//     LIABILITY DISCLAIMER
//     THIS GENERATED CODE IS DISTRIBUTED "AS IS". NO WARRANTY OF ANY KIND IS EXPRESSED OR IMPLIED.
//     YOU USE IT AT YOUR OWN RISK. THE AUTHOR NOT WILL BE LIABLE FOR DATA LOSS,
//     DAMAGES AND LOSS OF PROFITS OR ANY OTHER KIND OF LOSS WHILE USING OR MISUSING THIS CODE.
//----------------------------------------------------------------------------------------------------
program GetWMI_Info;

{$APPTYPE CONSOLE}

uses
(*  SysUtils, ActiveX, ComObj, Variants;  *)
  System.SysUtils,
  Winapi.ActiveX,
  System.Win.ComObj,
  System.Variants;

function VarToInt(const AVariant: Variant): INT64;// integer;
begin Result := StrToIntDef(Trim(VarToStr(AVariant)), 0); end;

// Die Klasse "Win32_USBHub" stellt die Verwaltungseigenschaften eines USB-Hubs dar.

procedure  GetWin32_USBHubInfo;
const
  WbemUser            ='';
  WbemPassword        ='';
  WbemComputer        ='localhost';
  wbemFlagForwardOnly = $00000020;
var
  FSWbemLocator : OLEVariant;
  FWMIService   : OLEVariant;
  FWbemObjectSet: OLEVariant;
  FWbemObject   : OLEVariant;
  oEnum         : IEnumvariant;
  iValue        : LongWord;
  j : Integer;
begin;
  FSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  FWMIService   := FSWbemLocator.ConnectServer(WbemComputer, 'root\CIMV2', WbemUser, WbemPassword);
  FWbemObjectSet:= FWMIService.ExecQuery('SELECT * FROM Win32_USBHub','WQL',wbemFlagForwardOnly);
  oEnum         := IUnknown(FWbemObjectSet._NewEnum) as IEnumVariant;
  while oEnum.Next(1, FWbemObject, iValue) = 0 do
  begin
    Writeln(Format('Availability                   %d',[VarToInt(FWbemObject.Availability)]));// Uint16
    Writeln(Format('Caption                        %s',[VarToStr(FWbemObject.Caption)]));// String
    Writeln(Format('ClassCode                      %d',[VarToInt(FWbemObject.ClassCode)]));// Uint8
    Writeln(Format('ConfigManagerErrorCode         %d',[VarToInt(FWbemObject.ConfigManagerErrorCode)]));// Uint32
    Writeln(Format('ConfigManagerUserConfig        %s',[VarToStr(FWbemObject.ConfigManagerUserConfig)]));// Boolean
    Writeln(Format('CreationClassName              %s',[VarToStr(FWbemObject.CreationClassName)]));// String
//    Writeln(Format('CurrentAlternateSettings       %d',[VarToInt(FWbemObject.CurrentAlternateSettings)]));// Array of Uint8
    Writeln(Format('CurrentConfigValue             %d',[VarToInt(FWbemObject.CurrentConfigValue)]));// Uint8
    Writeln(Format('Description                    %s',[VarToStr(FWbemObject.Description)]));// String
    Writeln(Format('DeviceID                       %s',[VarToStr(FWbemObject.DeviceID)]));// String
    Writeln(Format('ErrorCleared                   %s',[VarToStr(FWbemObject.ErrorCleared)]));// Boolean
    Writeln(Format('ErrorDescription               %s',[VarToStr(FWbemObject.ErrorDescription)]));// String
    Writeln(Format('GangSwitched                   %s',[VarToStr(FWbemObject.GangSwitched)]));// Boolean
    Writeln(Format('InstallDate                    %s',[VarToStr(FWbemObject.InstallDate)]));// Datetime
    Writeln(Format('LastErrorCode                  %d',[VarToInt(FWbemObject.LastErrorCode)]));// Uint32
    Writeln(Format('Name                           %s',[VarToStr(FWbemObject.Name)]));// String
    Writeln(Format('NumberOfConfigs                %d',[VarToInt(FWbemObject.NumberOfConfigs)]));// Uint8
    Writeln(Format('NumberOfPorts                  %d',[VarToInt(FWbemObject.NumberOfPorts)]));// Uint8
    Writeln(Format('PNPDeviceID                    %s',[VarToStr(FWbemObject.PNPDeviceID)]));// String
//    Writeln(Format('PowerManagementCapabilities    %d',[VarToInt(FWbemObject.PowerManagementCapabilities)]));// Array of Uint16
    for j:= low(VarToInt(FWbemObject.PowerManagementCapabilities)) to high(VarToInt(FWbemObject.PowerManagementCapabilities)) do
    Writeln(Format('PowerManagementCapabilities    %d',[VarToInt(FWbemObject.PowerManagementCapabilities[j])]));

    Writeln(Format('PowerManagementSupported       %s',[VarToStr(FWbemObject.PowerManagementSupported)]));// Boolean
    Writeln(Format('ProtocolCode                   %d',[VarToInt(FWbemObject.ProtocolCode)]));// Uint8
    Writeln(Format('Status                         %s',[VarToStr(FWbemObject.Status)]));// String
    Writeln(Format('StatusInfo                     %d',[VarToInt(FWbemObject.StatusInfo)]));// Uint16
    Writeln(Format('SubclassCode                   %d',[VarToInt(FWbemObject.SubclassCode)]));// Uint8
    Writeln(Format('SystemCreationClassName        %s',[VarToStr(FWbemObject.SystemCreationClassName)]));// String
    Writeln(Format('SystemName                     %s',[VarToStr(FWbemObject.SystemName)]));// String
    Writeln(Format('USBVersion                     %d',[VarToInt(FWbemObject.USBVersion)]));// Uint16
       
    Writeln(StringOfChar('-',80));
    FWbemObject:=Unassigned;
  end;
end;

// Die Klasse "Win32_NetworkAdapter" stellt einen Netzwerkadapter in einem Win32-
// System dar.

procedure  GetWin32_NetworkAdapterInfo;
const
  WbemUser            ='';
  WbemPassword        ='';
  WbemComputer        ='localhost';
  wbemFlagForwardOnly = $00000020;
var
  FSWbemLocator : OLEVariant;
  FWMIService   : OLEVariant;
  FWbemObjectSet: OLEVariant;
  FWbemObject   : OLEVariant;
  oEnum         : IEnumvariant;
  iValue        : LongWord;
  j : Integer;
begin;
  FSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  FWMIService   := FSWbemLocator.ConnectServer(WbemComputer, 'root\CIMV2', WbemUser, WbemPassword);
  FWbemObjectSet:= FWMIService.ExecQuery('SELECT * FROM Win32_NetworkAdapter','WQL',wbemFlagForwardOnly);
  oEnum         := IUnknown(FWbemObjectSet._NewEnum) as IEnumVariant;
  while oEnum.Next(1, FWbemObject, iValue) = 0 do
  begin
    Writeln(Format('AdapterType                    %s',[VarToStr(FWbemObject.AdapterType)]));// String
    Writeln(Format('AdapterTypeId                  %d',[VarToInt(FWbemObject.AdapterTypeId)]));// Uint16
    Writeln(Format('AutoSense                      %s',[VarToStr(FWbemObject.AutoSense)]));// Boolean
    Writeln(Format('Availability                   %d',[VarToInt(FWbemObject.Availability)]));// Uint16
    Writeln(Format('Caption                        %s',[VarToStr(FWbemObject.Caption)]));// String
    Writeln(Format('ConfigManagerErrorCode         %d',[VarToInt(FWbemObject.ConfigManagerErrorCode)]));// Uint32
    Writeln(Format('ConfigManagerUserConfig        %s',[VarToStr(FWbemObject.ConfigManagerUserConfig)]));// Boolean
    Writeln(Format('CreationClassName              %s',[VarToStr(FWbemObject.CreationClassName)]));// String
    Writeln(Format('Description                    %s',[VarToStr(FWbemObject.Description)]));// String
    Writeln(Format('DeviceID                       %s',[VarToStr(FWbemObject.DeviceID)]));// String
    Writeln(Format('ErrorCleared                   %s',[VarToStr(FWbemObject.ErrorCleared)]));// Boolean
    Writeln(Format('ErrorDescription               %s',[VarToStr(FWbemObject.ErrorDescription)]));// String
    Writeln(Format('GUID                           %s',[VarToStr(FWbemObject.GUID)]));// String
    Writeln(Format('Index                          %d',[VarToInt(FWbemObject.Index)]));// Uint32
    Writeln(Format('InstallDate                    %s',[VarToStr(FWbemObject.InstallDate)]));// Datetime
    Writeln(Format('Installed                      %s',[VarToStr(FWbemObject.Installed)]));// Boolean
    Writeln(Format('InterfaceIndex                 %d',[VarToInt(FWbemObject.InterfaceIndex)]));// Uint32
    Writeln(Format('LastErrorCode                  %d',[VarToInt(FWbemObject.LastErrorCode)]));// Uint32
    Writeln(Format('MACAddress                     %s',[VarToStr(FWbemObject.MACAddress)]));// String
    Writeln(Format('Manufacturer                   %s',[VarToStr(FWbemObject.Manufacturer)]));// String
    Writeln(Format('MaxNumberControlled            %d',[VarToInt(FWbemObject.MaxNumberControlled)]));// Uint32
    Writeln(Format('MaxSpeed                       %d',[VarToInt(FWbemObject.MaxSpeed)]));// Uint64
    Writeln(Format('Name                           %s',[VarToStr(FWbemObject.Name)]));// String
    Writeln(Format('NetConnectionID                %s',[VarToStr(FWbemObject.NetConnectionID)]));// String
    Writeln(Format('NetConnectionStatus            %d',[VarToInt(FWbemObject.NetConnectionStatus)]));// Uint16
    Writeln(Format('NetEnabled                     %s',[VarToStr(FWbemObject.NetEnabled)]));// Boolean
//    Writeln(Format('NetworkAddresses               %s',[VarToStr(FWbemObject.NetworkAddresses)]));// Array of String
//    Writeln(Format('PermanentAddress               %s',[VarToStr(FWbemObject.PermanentAddress)]));// String
    Writeln(Format('PhysicalAdapter                %s',[VarToStr(FWbemObject.PhysicalAdapter)]));// Boolean
    Writeln(Format('PNPDeviceID                    %s',[VarToStr(FWbemObject.PNPDeviceID)]));// String
//    Writeln(Format('PowerManagementCapabilities    %d',[VarToInt(FWbemObject.PowerManagementCapabilities)]));// Array of Uint16
    for j:= low(VarToInt(FWbemObject.PowerManagementCapabilities)) to high(VarToInt(FWbemObject.PowerManagementCapabilities)) do
    Writeln(Format('PowerManagementCapabilities    %d',[VarToInt(FWbemObject.PowerManagementCapabilities[j])]));
    Writeln(Format('PowerManagementSupported       %s',[VarToStr(FWbemObject.PowerManagementSupported)]));// Boolean
    Writeln(Format('ProductName                    %s',[VarToStr(FWbemObject.ProductName)]));// String
    Writeln(Format('ServiceName                    %s',[VarToStr(FWbemObject.ServiceName)]));// String
    Writeln(Format('Speed                          %d',[VarToInt(FWbemObject.Speed)]));// Uint64
    Writeln(Format('Status                         %s',[VarToStr(FWbemObject.Status)]));// String
    Writeln(Format('StatusInfo                     %d',[VarToInt(FWbemObject.StatusInfo)]));// Uint16
    Writeln(Format('SystemCreationClassName        %s',[VarToStr(FWbemObject.SystemCreationClassName)]));// String
    Writeln(Format('SystemName                     %s',[VarToStr(FWbemObject.SystemName)]));// String
    Writeln(Format('TimeOfLastReset                %s',[VarToStr(FWbemObject.TimeOfLastReset)]));// Datetime

    Writeln(StringOfChar('-',80));
    FWbemObject:=Unassigned;
  end;
end;

begin
 try
    CoInitialize(nil);
    try
//      GetWin32_USBHubInfo;
      GetWin32_NetworkAdapterInfo;
    finally
      CoUninitialize;
    end;
 except
    on E:EOleException do
        Writeln(Format('EOleException %s %x', [E.Message,E.ErrorCode])); 
    on E:Exception do
        Writeln(E.Classname, ':', E.Message);
 end;
 Writeln('Press Enter to exit');
 Readln;      
end.

[delphisnoopy]

ok, danke schonmal. Läuft bei mir auch soweit, aber die entsprechenden Zeilen

Delphi-Quellcode:

    for j:= low(VarToInt(FWbemObject.PowerManagementCapabilities)) to high(VarToInt(FWbemObject.PowerManagementCapabilities)) do
    Writeln(Format('PowerManagementCapabilities %d',[VarToInt(FWbemObject.PowerManagementCapabilities[j])]));
    Writeln(Format('PowerManagementSupported %s',[VarToStr(FWbemObject.PowerManagementSupported)]));// Boolean

geben auch hier keine Werte aus. Dann ist die von mir gesuchte Information anscheinend nicht über WMI Funktionen auslesbar, oder sehe ich das falsch?