PicView/src/PicView.Core.WindowsNT/Lockscreen/LockscreenHelper.cs

// using System.Runtime.InteropServices;
// using Microsoft.Win32;
//
// namespace PicView.Core.WindowsNT.Lockscreen;
//
// public static partial class LockscreenHelper
// {
//     [LibraryImport("kernel32.dll", SetLastError = true)]
//     [return: MarshalAs(UnmanagedType.Bool)]
//     public static partial bool Wow64DisableWow64FsRedirection(ref IntPtr ptr);
//
//     public static bool SetLockScreenImage(string path)
//     {
//         const string personalizationcsp =
//             @"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\PersonalizationCSP";
//         // const string enforceLockScreenAndLogonImage =
//         //     @"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\default\DeviceLock\EnforceLockScreenAndLogonImage";
//         // const string enforcelockscreenprovider =
//         //     @"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\default\DeviceLock\EnforceLockScreenProvider";
//         var ptr = new IntPtr();
//         Wow64DisableWow64FsRedirection(ref ptr);
//
//         try
//         {
//             Registry.SetValue(personalizationcsp, "LockScreenImageStatus", 1, RegistryValueKind.DWord);
//             Registry.SetValue(personalizationcsp, "LockScreenImagePath", path, RegistryValueKind.String);
//             Registry.SetValue(personalizationcsp, "LockScreenImageUrl", path, RegistryValueKind.String);
//             
//             // Registry.SetValue(enforceLockScreenAndLogonImage, "policytype", 0, RegistryValueKind.DWord);
//             // Registry.SetValue(enforcelockscreenprovider, "policytype", 0, RegistryValueKind.DWord);
//             
//             // Seems to only work once, and then have to restart the machine to make it work again. 
//             // It seems to disable setting the lock screen image in the settings app with the text:
//             // *Some settings are managed by your organization
//             // enforceLockScreenAndLogonImage and enforcelockscreenprovider are both set to 0 to try to disable it,
//             // but it doesn't seem to work.
//             // Need to investigate further and disable it for now.
//         }
//         catch
//         {
//             return false;
//         }
//
//         return true;
//     }
// }