Energieverwaltung von Netzwerkadaptern und USB Root Hub

[delphisnoopy]

Hallo,

ich würde gerne ein Programm schreiben um die Energieverwaltung Netzwerkadaptern und USB Geräten auszulesen und auch zu verändern. Speziell geht es dabei um die Einstellung unter Windows 7:

Geräter-Manager->Netwerkadapter->Mein-USBLAN Adapter->Energieverwaltung->"Computer kann das Gerät ausschalten, um Energie zu sparen"

bzw.

Geräter-Manager->USB-Controller->Root-Hub->Energieverwaltung->"Computer kann das Gerät ausschalten, um Energie zu sparen"

Ich habe im Beitrag http://www.delphipraxis.net/140025-n...eiberinfo.html Funktionen gefunden, um Netzwerkadapter anzuzeigen und Informationen über Ip-Adress und MAC-Adresse zu bekommen. Leider finde ich keine Auslesemöglichkeit für die Energieverwaltung.

Kann mir jemand sagen ob ich über die WMI Funktionen die Energieverwaltung lesen/setzen kann, oder ob ich hier an der komplett falschen Stelle suche?
Und außerdem wie ich das ganze auch für USB-Controller verwenden kann?

Vielen Dank schonmal!

[t.roller]

Mit devcon.exe kann man die Devices kontrollieren.

Note: To change the status or configuration of a device, you must be a member of the Administrators group on the computer.

Beispiele:

Delphi-Quellcode:

function GetConsoleOutput(Command : string;
         Output, Errors : TStringList) : Boolean;
var
  Buffer            : array[0..255] of Char;
  CreationFlags     : DWORD;
  NumberOfBytesRead : DWORD;
  PipeErrorsRead    : THandle;
  PipeErrorsWrite   : THandle;
  PipeOutputRead    : THandle;
  PipeOutputWrite   : THandle;
  ProcessInfo       : TProcessInformation;
  SecurityAttr      : TSecurityAttributes;
  StartupInfo       : TStartupInfo;
  Stream            : TMemoryStream;
begin
  //Initialisierung ProcessInfo
  FillChar(ProcessInfo, SizeOf(TProcessInformation), 0);

  //Initialisierung SecurityAttr
  FillChar(SecurityAttr, SizeOf(TSecurityAttributes), 0);
  SecurityAttr.nLength              := SizeOf(TSecurityAttributes);
  SecurityAttr.bInheritHandle       := True;
  SecurityAttr.lpSecurityDescriptor := nil;

  //Pipes erzeugen
  CreatePipe(PipeOutputRead, PipeOutputWrite, @SecurityAttr, 0);
  CreatePipe(PipeErrorsRead, PipeErrorsWrite, @SecurityAttr, 0);

  //Initialisierung StartupInfo
  FillChar(StartupInfo, SizeOf(TStartupInfo), 0);
  StartupInfo.cb          := SizeOf(TStartupInfo);
  StartupInfo.hStdInput   := 0;
  StartupInfo.hStdOutput  := PipeOutputWrite;
  StartupInfo.hStdError   := PipeErrorsWrite;
  StartupInfo.wShowWindow := SW_HIDE;
  StartupInfo.dwFlags     := STARTF_USESHOWWINDOW or STARTF_USESTDHANDLES;

  CreationFlags := CREATE_DEFAULT_ERROR_MODE or
                   CREATE_NEW_CONSOLE or
                   NORMAL_PRIORITY_CLASS;

  // Folgende Zeile ist nur für Delphi ab 2009 erforderlich:
  UniqueString(Command);

  if CreateProcess(nil,
                   PChar(Command),
                   nil,
                   nil,
                   True,
                   CreationFlags,
                   nil,
                   nil,
                   StartupInfo,
                   ProcessInfo) then
  begin
    Result := True;
    //Write-Pipes schließen
    CloseHandle(PipeOutputWrite);
    CloseHandle(PipeErrorsWrite);

    //Ausgabe Read-Pipe auslesen
    Stream := TMemoryStream.Create;
    try
      while ReadFile(PipeOutputRead, Buffer, 255, NumberOfBytesRead, nil) do
      begin
         Stream.Write(Buffer, NumberOfBytesRead);
      end;
      OEMToAnsiBuff(Stream.Memory, Stream.Memory, Stream.Size);  //<--------------
      Stream.Position := 0;
      Output.LoadFromStream(Stream);
    finally
      Stream.Free;
    end;
    CloseHandle(PipeOutputRead);

    //Fehler Read-Pipe auslesen
    Stream := TMemoryStream.Create;
    try
      while ReadFile(PipeErrorsRead, Buffer, 255, NumberOfBytesRead, nil) do
      begin
         Stream.Write(Buffer, NumberOfBytesRead);
      end;
      OEMToAnsiBuff(Stream.Memory, Stream.Memory, Stream.Size);          
      Stream.Position := 0;
      Errors.LoadFromStream(Stream);
    finally
      Stream.Free;
    end;
    CloseHandle(PipeErrorsRead);

    WaitForSingleObject(ProcessInfo.hProcess, INFINITE);
    CloseHandle(ProcessInfo.hProcess);
  end
  else
  begin
    Result := False;
    CloseHandle(PipeOutputRead);
    CloseHandle(PipeOutputWrite);
    CloseHandle(PipeErrorsRead);
    CloseHandle(PipeErrorsWrite);
  end;
end;

procedure TForm2.Button1Click(Sender: TObject);
var
  Output : TStringList;
  Errors : TStringList;
begin
  Output := TStringList.Create;
  Errors := TStringList.Create;
  Memo1.Lines.Add('----------------------USB OFF---------------------');
  try
    if GetConsoleOutput('devcon.exe disable USB\ROOT_HUB20', Output, Errors)  // USB 2.0
    then Memo1.Lines.AddStrings(Output); Memo1.Lines.Add('');
    if GetConsoleOutput('devcon.exe disable USB\ROOT_HUB30', Output, Errors)  // USB 3.0
    then Memo1.Lines.AddStrings(Output);
  finally
    Output.free;
    Errors.free;
  end;
end;

procedure TForm2.Button2Click(Sender: TObject);
var
  Output : TStringList;
  Errors : TStringList;
begin
  Output := TStringList.Create;
  Errors := TStringList.Create;
  Memo1.Lines.Add('----------------------USB ON----------------------');
  try
    if GetConsoleOutput('devcon.exe enable USB\ROOT_HUB20', Output, Errors) // USB 2.0
    then Memo1.Lines.AddStrings(Output); Memo1.Lines.Add('');
    if GetConsoleOutput('devcon.exe enable USB\ROOT_HUB30', Output, Errors) // USB 3.0
    then Memo1.Lines.AddStrings(Output);
  finally
    Output.free;
    Errors.free;
  end;
end;

Einen Energieeffizienzdiagnose-Bericht bekommt man damit:
powercfg energy
(Administrator-Rechte erforderlich)
Mit powercfg.exe kann man sehr viel machen.
WMI hast Du selbst schon erwähnt.

[delphisnoopy]

Hallo t.roller,

vielen Dank für die Antwort, aber das ist nicht ganz das, was ich suche. Ich will nicht den gesamten USB Hub deaktivieren, sondern nur die folgende Option auslesen bzw. deaktivieren:

Geräter-Manager->USB-Controller->Root-Hub->Energieverwaltung->"Computer kann das Gerät ausschalten, um Energie zu sparen"

Der USB Hub soll weiter laufen, es ist aber wichtig, dass er nicht das angeschlossene Gerät in einem bestimmten Zustand des Power Managements deaktiviertv (s. Bild im Anhang).

[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?