C# Definition:

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
struct USER_POWER_POLICY {
            public uint Revision;
            public POWER_ACTION_POLICY IdleAc;
            public POWER_ACTION_POLICY IdleDc;
            public uint IdleTimeoutAc;
            public uint IdleTimeoutDc;
            public byte IdleSensitivityAc;
            public byte IdleSensitivityDc;
            public byte ThrottlePolicyAc;
            public byte ThrottlePolicyDc;
            public SYSTEM_POWER_STATE MaxSleepAc;
            public SYSTEM_POWER_STATE MaxSleepDc;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
            public uint[] Reserved;
            public uint VideoTimeoutAc;
            public uint VideoTimeoutDc;
            public uint SpindownTimeoutAc;
            public uint SpindownTimeoutDc;
            [MarshalAs(UnmanagedType.I1)]
            public bool OptimizeForPowerAc;
            [MarshalAs(UnmanagedType.I1)]
            public bool OptimizeForPowerDc;
            public byte FanThrottleToleranceAc;
            public byte FanThrottleToleranceDc;
            public byte ForcedThrottleAc;
            public byte ForcedThrottleDc;
}

VB Definition:

    Structure USER_POWER_POLICY
        Public Revision As UInteger
        Public IdleAc As POWER_ACTION_POLICY
        Public IdleDc As POWER_ACTION_POLICY
        Public IdleTimeoutAc As UInteger
        Public IdleTimeoutDc As UInteger
        Public IdleSensitivityAc As Byte
        Public IdleSensitivityDc As Byte
        Public ThrottlePolicyAc As Byte
        Public ThrottlePolicyDc As Byte
        Public MaxSleepAc As SYSTEM_POWER_STATE
        Public MaxSleepDc As SYSTEM_POWER_STATE
        <MarshalAs(UnmanagedType.ByValArray, SizeConst:=2)> _
        Public Reserved As UInteger()
        Public VideoTimeoutAc As UInteger
        Public VideoTimeoutDc As UInteger
        Public SpindownTimeoutAc As UInteger
        Public SpindownTimeoutDc As UInteger
        <MarshalAs(UnmanagedType.I1)> _
        Public OptimizeForPowerAc As Boolean
        <MarshalAs(UnmanagedType.I1)> _
        Public OptimizeForPowerDc As Boolean
        Public FanThrottleToleranceAc As Byte
        Public FanThrottleToleranceDc As Byte
        Public ForcedThrottleAc As Byte
        Public ForcedThrottleDc As Byte
    End Structure

User-Defined Field Types:

None.

Notes:

None.