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Your IP : 216.73.216.152
# Copyright � 2008, Microsoft Corporation. All rights reserved.
#get the power config
$methodDefinition = @"
using System;
using System.Runtime.InteropServices;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;
public sealed class PowerConfig
{
[Flags]
public enum POWER_DATA_ACCESSOR
{
/// <summary>
/// Check for overrides on AC power settings.
/// </summary>
ACCESS_AC_POWER_SETTING_INDEX = 0x0,
/// <summary>
/// Check for overrides on DC power settings.
/// </summary>
ACCESS_DC_POWER_SETTING_INDEX = 0x1,
/// <summary>
/// Check for restrictions on specific power schemes.
/// </summary>
ACCESS_SCHEME = 0x10,
/// <summary>
/// Check for restrictions on active power schemes.
/// </summary>
ACCESS_ACTIVE_SCHEME = 0x13,
/// <summary>
/// Check for restrictions on creating or restoring power schemes.
/// </summary>
ACCESS_CREATE_SCHEME = 0x14
};
public enum POWER_PLATFORM_ROLE
{
PlatformRoleUnspecified = 0,
PlatformRoleDesktop = 1,
PlatformRoleMobile = 2,
PlatformRoleWorkstation = 3,
PlatformRoleEnterpriseServer = 4,
PlatformRoleSOHOServer = 5,
PlatformRoleAppliancePC = 6,
PlatformRolePerformanceServer = 7,
PlatformRoleMaximum = 8
};
[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
public struct SYSTEM_POWER_CAPABILITIES
{
/// BOOLEAN->BYTE->unsigned char
public byte PowerButtonPresent;
/// BOOLEAN->BYTE->unsigned char
public byte SleepButtonPresent;
/// BOOLEAN->BYTE->unsigned char
public byte LidPresent;
/// BOOLEAN->BYTE->unsigned char
public byte SystemS1;
/// BOOLEAN->BYTE->unsigned char
public byte SystemS2;
/// BOOLEAN->BYTE->unsigned char
public byte SystemS3;
/// BOOLEAN->BYTE->unsigned char
public byte SystemS4;
/// BOOLEAN->BYTE->unsigned char
public byte SystemS5;
/// BOOLEAN->BYTE->unsigned char
public byte HiberFilePresent;
/// BOOLEAN->BYTE->unsigned char
public byte FullWake;
/// BOOLEAN->BYTE->unsigned char
public byte VideoDimPresent;
/// BOOLEAN->BYTE->unsigned char
public byte ApmPresent;
/// BOOLEAN->BYTE->unsigned char
public byte UpsPresent;
/// BOOLEAN->BYTE->unsigned char
public byte ThermalControl;
/// BOOLEAN->BYTE->unsigned char
public byte ProcessorThrottle;
/// BYTE->unsigned char
public byte ProcessorMinThrottle;
/// BYTE->unsigned char
public byte ProcessorMaxThrottle;
/// BOOLEAN->BYTE->unsigned char
public byte FastSystemS4;
/// BYTE[3]
[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst = 3, ArraySubType = System.Runtime.InteropServices.UnmanagedType.I1)]
public byte[] spare2;
/// BOOLEAN->BYTE->unsigned char
public byte DiskSpinDown;
/// BYTE[8]
[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst = 8, ArraySubType = System.Runtime.InteropServices.UnmanagedType.I1)]
public byte[] spare3;
/// BOOLEAN->BYTE->unsigned char
public byte SystemBatteriesPresent;
/// BOOLEAN->BYTE->unsigned char
public byte BatteriesAreShortTerm;
/// BATTERY_REPORTING_SCALE[3]
[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst = 3, ArraySubType = System.Runtime.InteropServices.UnmanagedType.Struct)]
public BATTERY_REPORTING_SCALE[] BatteryScale;
/// SYSTEM_POWER_STATE->_SYSTEM_POWER_STATE
public SYSTEM_POWER_STATE AcOnLineWake;
/// SYSTEM_POWER_STATE->_SYSTEM_POWER_STATE
public SYSTEM_POWER_STATE SoftLidWake;
/// SYSTEM_POWER_STATE->_SYSTEM_POWER_STATE
public SYSTEM_POWER_STATE RtcWake;
/// SYSTEM_POWER_STATE->_SYSTEM_POWER_STATE
public SYSTEM_POWER_STATE MinDeviceWakeState;
/// SYSTEM_POWER_STATE->_SYSTEM_POWER_STATE
public SYSTEM_POWER_STATE DefaultLowLatencyWake;
}
public enum SYSTEM_POWER_STATE
{
/// PowerSystemUnspecified -> 0
PowerSystemUnspecified = 0,
/// PowerSystemWorking -> 1
PowerSystemWorking = 1,
/// PowerSystemSleeping1 -> 2
PowerSystemSleeping1 = 2,
/// PowerSystemSleeping2 -> 3
PowerSystemSleeping2 = 3,
/// PowerSystemSleeping3 -> 4
PowerSystemSleeping3 = 4,
/// PowerSystemHibernate -> 5
PowerSystemHibernate = 5,
/// PowerSystemShutdown -> 6
PowerSystemShutdown = 6,
/// PowerSystemMaximum -> 7
PowerSystemMaximum = 7,
}
[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
public struct BATTERY_REPORTING_SCALE
{
/// DWORD->unsigned int
public uint Granularity;
/// DWORD->unsigned int
public uint Capacity;
}
[DllImport("powrprof.dll")]
private static extern UInt32 CallNtPowerInformation(
Int32 InformationLevel,
IntPtr lpInputBuffer,
UInt32 nInputBufferSize,
ref SYSTEM_POWER_CAPABILITIES lpOutputBuffer,
UInt32 nOutputBufferSize
);
[DllImport("PowrProf.dll", CharSet = CharSet.Auto)]
private static extern POWER_PLATFORM_ROLE PowerDeterminePlatformRole();
/// <summary>
/// Full call to method PowerSettingAccessCheck().
/// </summary>
/// <param name="AccessFlags">One or more check specifier flags</param>
/// <param name="PowerGuid">The relevant Power Policy GUID</param>
/// <returns></returns>
[DllImport("PowrProf.dll")]
[return: MarshalAs(UnmanagedType.U4)]
private static extern UInt32 PowerSettingAccessCheck(
POWER_DATA_ACCESSOR AccessFlags,
[MarshalAs(UnmanagedType.LPStruct)] Guid PowerGuid
);
private PowerConfig() { }
[DllImport("PowrProf.dll")]
private static extern uint PowerReadACValueIndex(
uint RootPowerKey,
ref Guid SchemeGuid,
ref Guid SubGroupOfPowerSettingsGuid,
ref Guid PowerSettingGuid,
ref UInt32 Value
);
[DllImport("PowrProf.dll")]
private static extern uint PowerReadDCValueIndex(
uint RootPowerKey,
ref Guid SchemeGuid,
ref Guid SubGroupOfPowerSettingsGuid,
ref Guid PowerSettingGuid,
ref UInt32 Value
);
[DllImport("PowrProf.dll")]
private static extern uint PowerReadACDefaultIndex(
uint RootPowerKey,
ref Guid SchemeGuid,
ref Guid SubGroupOfPowerSettingsGuid,
ref Guid PowerSettingGuid,
ref UInt32 Value
);
[DllImport("PowrProf.dll")]
private static extern uint PowerReadDCDefaultIndex(
uint RootPowerKey,
ref Guid SchemeGuid,
ref Guid SubGroupOfPowerSettingsGuid,
ref Guid PowerSettingGuid,
ref UInt32 Value
);
[DllImport("PowrProf.dll")]
private static extern uint PowerWriteACValueIndex(
uint RootPowerKey,
ref Guid SchemeGuid,
ref Guid SubGroupOfPowerSettingsGuid,
ref Guid PowerSettingGuid,
uint AcValueIndex
);
[DllImport("PowrProf.dll")]
private static extern uint PowerWriteDCValueIndex(
uint RootPowerKey,
ref Guid SchemeGuid,
ref Guid SubGroupOfPowerSettingsGuid,
ref Guid PowerSettingGuid,
uint AcValueIndex
);
[DllImport("PowrProf.dll")]
private static extern uint PowerGetActiveScheme(
uint UserRootPowerKey,
ref IntPtr ActivePolicyGuid
);
[DllImport("PowrProf.dll")]
private static extern uint PowerSetActiveScheme(
uint UserRootPowerKey,
ref Guid SchemeGuid
);
[DllImport("powrprof.dll")]
public static extern UInt32 PowerEnumerate(
uint RootPowerKey,
IntPtr SchemeGuid,
IntPtr SubGroupOfPowerSettingGuid,
UInt32 AcessFlags,
UInt32 Index,
ref Guid Buffer,
ref UInt32 BufferSize);
[DllImport("powrprof.dll")]
public static extern UInt32 PowerReadFriendlyName(
IntPtr RootPowerKey,
ref Guid SchemeGuid,
IntPtr SubGroupOfPowerSettingGuid,
IntPtr PowerSettingGuid,
IntPtr Buffer,
ref UInt32 BufferSize);
public static Guid ActiveSchemeGuid()
{
IntPtr guidPtr = new IntPtr();
uint res = PowerConfig.PowerGetActiveScheme(0, ref guidPtr);
if (res != 0)
{
throw new Win32Exception((Int32)res);
}
Guid ret = (Guid)Marshal.PtrToStructure(guidPtr, typeof(Guid));
Marshal.FreeHGlobal(guidPtr);
return ret;
}
public static uint SetPowerActiveSchemeGuid(ref Guid activeSchemeGuid)
{
uint res = 0;
res = PowerConfig.PowerSetActiveScheme(0, ref activeSchemeGuid);
if (res !=0)
{
throw new Win32Exception((Int32)res);
}
return res;
}
public static uint ReadPowerSetting(bool ac,
ref Guid activeSchemeGuid,
ref Guid subGroupGuid,
ref Guid settingGuid,
ref UInt32 value)
{
uint res = 0;
if (ac)
{
res = PowerConfig.PowerReadACValueIndex(0, ref activeSchemeGuid, ref subGroupGuid,
ref settingGuid,
ref value);
}
else
{
res = PowerConfig.PowerReadDCValueIndex(0, ref activeSchemeGuid, ref subGroupGuid,
ref settingGuid,
ref value);
}
if (res !=0)
{
throw new Win32Exception((Int32)res);
}
return res;
}
public static uint ReadDefaultSetting(bool ac,
ref Guid activeSchemeGuid,
ref Guid subGroupGuid,
ref Guid settingGuid,
ref UInt32 value)
{
uint res = 0;
if (ac)
{
res = PowerConfig.PowerReadACDefaultIndex(0, ref activeSchemeGuid, ref subGroupGuid,
ref settingGuid,
ref value);
}
else
{
res = PowerConfig.PowerReadDCDefaultIndex(0, ref activeSchemeGuid, ref subGroupGuid,
ref settingGuid,
ref value);
}
if (res !=0)
{
throw new Win32Exception((Int32)res);
}
return res;
}
public static uint WritePowerSetting(bool ac,
ref Guid activeSchemeGuid,
ref Guid subGroupGuid,
ref Guid settingGuid,
UInt32 newValue)
{
uint res = 0;
if (ac)
{
res = PowerConfig.PowerWriteACValueIndex(0, ref activeSchemeGuid, ref subGroupGuid,
ref settingGuid,
newValue);
}
else
{
res = PowerConfig.PowerWriteDCValueIndex(0, ref activeSchemeGuid, ref subGroupGuid,
ref settingGuid,
newValue);
}
if (res !=0)
{
throw new Win32Exception((Int32)res);
}
res = PowerConfig.PowerSetActiveScheme(0,
ref activeSchemeGuid);
if (res !=0)
{
throw new Win32Exception((Int32)res);
}
return res;
}
public static Guid BalancedPowerPlan()
{
Guid subgroup = new Guid("fea3413e-7e05-4911-9a71-700331f1c294");
Guid setting = new Guid("245d8541-3943-4422-b025-13a784f679b7");
Guid Buffer = new Guid();
Guid BalancedGuid = new Guid();
UInt32 SchemeIndex = 0;
UInt32 BufferSize = (UInt32)Marshal.SizeOf(typeof(Guid));
while (0 == PowerConfig.PowerEnumerate(0, IntPtr.Zero, IntPtr.Zero, 16, SchemeIndex, ref Buffer, ref BufferSize))
{
uint ACvalue = 0;
uint DCvalue = 0;
PowerConfig.ReadPowerSetting(true, ref Buffer, ref subgroup, ref setting, ref ACvalue);
PowerConfig.ReadPowerSetting(false, ref Buffer, ref subgroup, ref setting, ref DCvalue);
if ((2 == ACvalue) && (2 == DCvalue))
{
BalancedGuid = Buffer;
}
SchemeIndex++;
}
return BalancedGuid;
}
public static UInt32 CheckPowerSetting(bool ac,Guid guid)
{
UInt32 res;
if (ac)
{
res = PowerConfig.PowerSettingAccessCheck(POWER_DATA_ACCESSOR.ACCESS_AC_POWER_SETTING_INDEX, guid);
}
else
{
res = PowerConfig.PowerSettingAccessCheck(POWER_DATA_ACCESSOR.ACCESS_DC_POWER_SETTING_INDEX, guid);
}
return res;
}
public static UInt32 CheckActiveSchemeAccess()
{
UInt32 res;
res = PowerConfig.PowerSettingAccessCheck(POWER_DATA_ACCESSOR.ACCESS_ACTIVE_SCHEME, new Guid());
if (res !=0)
{
throw new Win32Exception((Int32)res);
}
return res;
}
public static bool IsLaptop()
{
bool result = false;
POWER_PLATFORM_ROLE platform_role = PowerDeterminePlatformRole();
if (platform_role == POWER_PLATFORM_ROLE.PlatformRoleMobile)
{
result = true;
}
return result;
}
public static bool IsVideoDim()
{
SYSTEM_POWER_CAPABILITIES powercapabilityes = new SYSTEM_POWER_CAPABILITIES();
uint result = CallNtPowerInformation(
4, //SystemPowerCapabilities
(IntPtr)null,
0,
ref powercapabilityes,
(UInt32)Marshal.SizeOf(new SYSTEM_POWER_CAPABILITIES()));
if (result != 0)
{
return false;
}
if (powercapabilityes.VideoDimPresent == 1)
{
return true;
}
else
{
return false;
}
}
public static string ReadActiveSchemeFriendlyName()
{
Guid ptrActiveGuid = ActiveSchemeGuid();
uint buffSize = 0;
uint res = PowerReadFriendlyName(IntPtr.Zero, ref ptrActiveGuid, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, ref buffSize);
if (res == 0)
{
IntPtr ptrName = Marshal.AllocHGlobal((int)buffSize);
res = PowerReadFriendlyName(IntPtr.Zero,ref ptrActiveGuid, IntPtr.Zero, IntPtr.Zero, ptrName, ref buffSize);
if (res == 0)
{
string ret = Marshal.PtrToStringUni(ptrName);
Marshal.FreeHGlobal(ptrName);
return ret;
}
Marshal.FreeHGlobal(ptrName);
}
throw new Win32Exception((Int32)res);
}
}
public class ScreenSaver
{
// Signatures for unmanaged calls
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError=true)]
private static extern bool SystemParametersInfo(
int uAction, int uParam, ref int lpvParam,
int flags);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern bool SystemParametersInfo(
int uAction, int uParam, ref bool lpvParam,
int flags);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern int PostMessage(IntPtr hWnd,
int wMsg, int wParam, int lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr OpenDesktop(
string hDesktop, int Flags, bool Inherit,
uint DesiredAccess);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern bool CloseDesktop(
IntPtr hDesktop);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern bool EnumDesktopWindows(
IntPtr hDesktop, EnumDesktopWindowsProc callback,
IntPtr lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern bool IsWindowVisible(
IntPtr hWnd);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr GetForegroundWindow();
// Callbacks
private delegate bool EnumDesktopWindowsProc(
IntPtr hDesktop, IntPtr lParam);
// Constants
private const int SPI_GETSCREENSAVERACTIVE = 16;
private const int SPI_SETSCREENSAVERACTIVE = 17;
private const int SPI_GETSCREENSAVERTIMEOUT = 14;
private const int SPI_SETSCREENSAVERTIMEOUT = 15;
private const int SPI_GETSCREENSAVERRUNNING = 114;
private const int SPIF_SENDWININICHANGE = 2;
private const uint DESKTOP_WRITEOBJECTS = 0x0080;
private const uint DESKTOP_READOBJECTS = 0x0001;
private const int WM_CLOSE = 16;
// Returns TRUE if the screen saver is active
// (enabled, but not necessarily running).
public static bool GetScreenSaverActive()
{
bool isActive = false;
SystemParametersInfo(SPI_GETSCREENSAVERACTIVE, 0,
ref isActive, 0);
return isActive;
}
// Pass in TRUE(1) to activate or FALSE(0) to deactivate
// the screen saver.
public static void SetScreenSaverActive(int Active)
{
int nullVar = 0;
bool res = SystemParametersInfo(SPI_SETSCREENSAVERACTIVE,
Active, ref nullVar, SPIF_SENDWININICHANGE);
if (!res)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
// Returns the screen saver timeout setting, in seconds
public static Int32 GetScreenSaverTimeout()
{
Int32 value = 0;
bool res = SystemParametersInfo(SPI_GETSCREENSAVERTIMEOUT, 0,
ref value, 0);
if (!res)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
return value;
}
// Pass in the number of seconds to set the screen saver
// timeout value.
public static void SetScreenSaverTimeout(Int32 Value)
{
int nullVar = 0;
bool res = SystemParametersInfo(SPI_SETSCREENSAVERTIMEOUT,
Value, ref nullVar, SPIF_SENDWININICHANGE);
if (!res)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
// Returns TRUE if the screen saver is actually running
public static bool GetScreenSaverRunning()
{
bool isRunning = false;
bool res = SystemParametersInfo(SPI_GETSCREENSAVERRUNNING, 0,
ref isRunning, 0);
if (!res)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
return isRunning;
}
}
"@
Add-Type -TypeDefinition $methodDefinition
$powerconfig = [PowerConfig]
$ScreenSaver = [ScreenSaver]
function GetActiveSchemeFriendlyName()
{
return $powerconfig::ReadActiveSchemeFriendlyName()
}
function IsLaptop()
{
return $powerconfig::IsLaptop()
}
function IsVideoDim()
{
return $powerconfig::IsVideoDim()
}
function CheckPPMCapability {
[bool]$result = $false
try {
$locator = New-Object -ComObject "WbemScripting.SWbemLocator"
$server = $locator.connectServer(".", "root\wmi")
$class = $server.Get("KernelPerfStates")
$object = $class.Instances_()
$result = (0 -lt ($object | Measure-Object).Count)
} catch {
$result = $false
}
return $result
}
function IsActiveScreenSaver()
{
$result = $false
$regpath = "registry::HKEY_CURRENT_USER\Control Panel\Desktop"
if(test-path $regpath)
{
$Executable = Get-ItemProperty $regpath SCRNSAVE.EXE -ErrorAction silentlycontinue
if($Executable.'SCRNSAVE.EXE')
{
$result = $true
}
}
return $result
}
function DisableScreensaver()
{
$ScreenSaver::SetScreenSaverActive(0)
$regpath = "registry::HKEY_CURRENT_USER\Control Panel\Desktop"
if(test-path $regpath)
{
Set-ItemProperty $regpath SCRNSAVE.EXE ""
}
}
function GetActiveSchemeGuid()
{
$activeSchemeGuid = $powerconfig::ActiveSchemeGuid()
return $activeSchemeGuid
}
function SetActiveSchemeGuid([string]$ActiveSchemeGuid = $(throw "No Active Scheme Guid is specified"))
{
$ActiveSchemeGuid = new-object system.Guid($ActiveSchemeGuid)
$res = $powerconfig::SetPowerActiveSchemeGuid([ref]$ActiveSchemeGuid)
return $res
}
function Getpowersetting([bool]$isAC,[string]$subGroupGuid = $(throw "No subGroup Guid is specified"),[string]$settingGuid = $(throw "No setting Guid is specified"))
{
$activeSchemeGuid = $powerconfig::ActiveSchemeGuid()
$subGroupGuid = new-object system.Guid($subGroupGuid)
$settingGuid = new-object system.Guid($settingGuid)
$settingvalue = 0
$res = $powerconfig::ReadPowerSetting($isAC,[ref]$activeSchemeGuid,[ref]$subGroupGuid,[ref]$settingGuid,[ref]$settingvalue)
if($res -eq 0)
{
return $settingvalue
}
}
function GetDefaultpowersetting([bool]$isAC,[string]$subGroupGuid = $(throw "No subGroup Guid is specified"),[string]$settingGuid = $(throw "No setting Guid is specified"))
{
$BalancedPowerPlan = $powerconfig::BalancedPowerPlan()
$subGroupGuid = new-object system.Guid($subGroupGuid)
$settingGuid = new-object system.Guid($settingGuid)
$settingvalue = 0
$res = $powerconfig::ReadDefaultSetting($isAC,[ref]$BalancedPowerPlan,[ref]$subGroupGuid,[ref]$settingGuid,[ref]$settingvalue)
if($res -eq 0)
{
return $settingvalue
}
}
function Setpowersetting([bool]$isAC,[string]$subGroupGuid = $(throw "No subGroup Guid is specified"),[string]$settingGuid = $(throw "No setting Guid is specified"),[int]$settingvalue = $(throw "No setting value is specified"))
{
$activeSchemeGuid = $powerconfig::ActiveSchemeGuid()
$subGroupGuid = new-object system.Guid($subGroupGuid)
$settingGuid = new-object system.Guid($settingGuid)
$res = $powerconfig::WritePowerSetting($isAC,[ref]$activeSchemeGuid,[ref]$subGroupGuid,[ref]$settingGuid,$settingvalue)
return $res
}
function GetBalancedPowerPlan()
{
$BalancedPowerPlan = $powerconfig::BalancedPowerPlan()
return $BalancedPowerPlan
}
function CheckPowerSettingAccess([bool]$isAC,[string]$settingGuid = $(throw "No setting Guid is specified"))
{
$settingGuid = new-object system.Guid($settingGuid)
$result = $powerconfig::CheckPowerSetting($isAC,$settingGuid)
if($result -eq 0)
{
return $true
}
else
{
return $false
}
}
function CheckActiveSchemeAccess()
{
$result = $powerconfig::CheckActiveSchemeAccess()
if($result -eq 0)
{
return $true
}
else
{
return $false
}
}