Programmatically get Windows Setting | Account Setting | Require Sign In

Question

I have an issue when tried to get Windows Setting programmatically. I want to detect if user have config Require Sign-In when PC wake up from sleep or not. I can get information from Screen Saver Setting only, but it's not sufficient in this case. I googling a lot but can not find any solution, Is it possible? Thanks Screen Capture Require Sign In option

Answer 1

OK, after a long search, I found the answer you need, with the help of PowerGetActiveScheme () and PowerReadDCValueIndex ()

Code Sample: (C#)

According to your needs, you can easily convert to C ++.

using System;
using System.Runtime.InteropServices;

namespace PowrprofTest
{
    class Program
    {

        private static readonly Guid CONSOLELOCK = new Guid("0e796bdb-100d-47d6-a2d5-f7d2daa51f51");
        private static readonly Guid SUB_NONE = new Guid("fea3413e-7e05-4911-9a71-700331f1c294");

        [StructLayout(LayoutKind.Sequential)]
        public class GuidClass
        {
            public Guid Value;
        }

        [DllImport("powrprof.dll")]
        public static extern UInt32 PowerGetActiveScheme(
            IntPtr UserRootPowerKey,
            ref IntPtr ActivePolicyGuid
        );

        [DllImport("powrprof.dll", CharSet = CharSet.Unicode)]
        public static extern UInt32 PowerReadACValueIndex(
            IntPtr RootPowerKey,
            ref Guid SchemeGuid,
            ref Guid SubGroupOfPowerSettingsGuid,
            ref Guid PowerSettingGuid,
            ref UInt32 AcValueIndex
        );

        [DllImport("powrprof.dll", CharSet = CharSet.Unicode)]
        public static extern UInt32 PowerReadDCValueIndex(
            IntPtr RootPowerKey, ref Guid SchemeGuid,
            ref Guid SubGroupOfPowerSettingsGuid,
            ref Guid PowerSettingGuid,
            ref UInt32 AcValueIndex
        );

        static void Main(string[] args)
        {
            Guid scheme = GetActiveSchemeGuid();

            bool sleepLockEnabledAC = (GetACValue(scheme, SUB_NONE, CONSOLELOCK) == 1) ? true : false;
            bool sleepLockEnabledDC = (GetDCValue(scheme, SUB_NONE, CONSOLELOCK) == 1) ? true : false;

            Console.WriteLine("Sleep lock enabled on AC : " + sleepLockEnabledAC);
            Console.WriteLine("Sleep lock enabled on DC : " + sleepLockEnabledDC);
            Console.ReadLine();
        }

        static Guid GetActiveSchemeGuid()
        {
            IntPtr activeSchemePtr = IntPtr.Zero;
            uint res = PowerGetActiveScheme(IntPtr.Zero, ref activeSchemePtr);
            GuidClass temp = new GuidClass();
            Marshal.PtrToStructure(activeSchemePtr, temp);
            Guid scheme = temp.Value;
            return scheme;
        }

        /// <summary>
        /// Get setting for Plugged in
        /// </summary>
        static UInt32 GetACValue(Guid scheme, Guid subgroup, Guid setting)
        {
            UInt32 value = 0;
            PowerReadACValueIndex(IntPtr.Zero, ref scheme, ref subgroup, ref setting, ref value);
            return value;
        }

        /// <summary>
        /// Get setting for On battery
        /// </summary>
        static UInt32 GetDCValue(Guid scheme, Guid subgroup, Guid setting)
        {
            UInt32 value = 0;
            PowerReadDCValueIndex(IntPtr.Zero, ref scheme, ref subgroup, ref setting, ref value);
            return value;
        }
    }
}

Debug:

Sleep lock enabled on AC : True

Sleep lock enabled on AC : False