ColorControl/Shared/Native/WinApi.cs

using NWin32.NativeTypes;
using System.Runtime.InteropServices;

namespace ColorControl.Shared.Native;

public static class WinApi
{
    [StructLayout(LayoutKind.Sequential, Pack = 4)]
    public struct POWERBROADCAST_SETTING
    {
        public Guid PowerSetting;
        public uint DataLength;
        public byte Data;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct ParentProcessUtilities
    {
        // These members must match PROCESS_BASIC_INFORMATION
        internal IntPtr Reserved1;
        internal IntPtr PebBaseAddress;
        internal IntPtr Reserved2_0;
        internal IntPtr Reserved2_1;
        internal IntPtr UniqueProcessId;
        internal IntPtr InheritedFromUniqueProcessId;
    }

    public const int ENUM_CURRENT_SETTINGS = -1;
    public const int ENUM_REGISTRY_SETTINGS = -2;

    public static int PBT_POWERSETTINGCHANGE = 32787;

    public delegate void PCREATE_PROCESS_NOTIFY_ROUTINE(IntPtr ParentId, IntPtr ProcessId, bool Create);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, int vlc);

    [DllImport("user32.dll")]
    public static extern bool UnregisterHotKey(IntPtr hWnd, int id);

    [DllImport("user32.dll")]
    public static extern bool EnumDisplaySettingsA(string deviceName, int modeNum, out DEVMODEA devMode);

    [DllImport("kernel32.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool AllocConsole();

    [DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
    public static extern bool AttachConsole(int processId);

    [DllImport("kernel32.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool FreeConsole();

    [DllImport(@"User32", SetLastError = true)]
    public static extern IntPtr RegisterPowerSettingNotification(IntPtr hRecipient, ref Guid PowerSettingGuid, Int32 Flags);

    [DllImport("User32.dll", SetLastError = true)]
    public static extern bool UnregisterPowerSettingNotification(IntPtr hWnd);

    [DllImport("uxtheme.dll", CharSet = CharSet.Unicode)]
    public static extern int SetWindowTheme(IntPtr hWnd, string pszSubAppName, string pszSubIdList);

    [DllImport("uxtheme.dll", CharSet = CharSet.Unicode, EntryPoint = "#104")]
    public static extern int RefreshImmersiveColorPolicyState();

    [DllImport("uxtheme.dll", CharSet = CharSet.Unicode, EntryPoint = "#133")]
    public static extern int AllowDarkModeForWindow(IntPtr hWnd, bool allow);

    [DllImport("uxtheme.dll", CharSet = CharSet.Unicode, EntryPoint = "#135")]
    public static extern int SetPreferredAppMode(int appMode);

    [DllImport("uxtheme.dll", EntryPoint = "#136")]
    public static extern void FlushMenuThemes();

    [DllImport("dwmapi.dll", PreserveSig = true)]
    public static extern int DwmSetWindowAttribute(IntPtr hwnd, int attr, ref int attrValue, int attrSize);

    [DllImport("ntdll.dll")]
    public static extern int NtQueryInformationProcess(IntPtr processHandle, int processInformationClass, ref ParentProcessUtilities processInformation, int processInformationLength, out int returnLength);

    [DllImport("dwmapi.dll", EntryPoint = "#171")]
    public static extern void DwmpSDRToHDRBoostPtr(IntPtr monitor, double brightness);

    public enum MC_VCP_CODE_TYPE
    {
        MC_MOMENTARY,
        MC_SET_PARAMETER
    };

    [DllImport("Dxva2.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool GetVCPFeatureAndVCPFeatureReply(nint hMonitor, byte vcpCode, out MC_VCP_CODE_TYPE codeType, out uint currentValue, out uint maximumValue);

    [DllImport("Dxva2.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool SetVCPFeature(nint hMonitor, byte vcpCode, uint newValue);

    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
    public struct PHYSICAL_MONITOR
    {
        public IntPtr hPhysicalMonitor;

        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
        public string szPhysicalMonitorDescription;
    }

    [DllImport("Dxva2.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool GetNumberOfPhysicalMonitorsFromHMONITOR(IntPtr hMonitor, out uint pdwNumberOfPhysicalMonitors);

    [DllImport("Dxva2.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool GetPhysicalMonitorsFromHMONITOR(IntPtr hMonitor, uint dwPhysicalMonitorArraySize, [Out] PHYSICAL_MONITOR[] pPhysicalMonitorArray);

    [DllImport("Dxva2.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool DestroyPhysicalMonitors(uint dwPhysicalMonitorArraySize, [In] PHYSICAL_MONITOR[] pPhysicalMonitorArray);

    [DllImport("Dxva2.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool DestroyPhysicalMonitor(IntPtr hMonitor);
}