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Custom fan profiles with editor
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seerge
227
NativeMethods.cs
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227
NativeMethods.cs
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using System.Runtime.InteropServices;
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public class NativeMethods
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{
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[DllImport("PowrProf.dll", CharSet = CharSet.Unicode)]
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static extern UInt32 PowerWriteDCValueIndex(IntPtr RootPowerKey,
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[MarshalAs(UnmanagedType.LPStruct)] Guid SchemeGuid,
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[MarshalAs(UnmanagedType.LPStruct)] Guid SubGroupOfPowerSettingsGuid,
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[MarshalAs(UnmanagedType.LPStruct)] Guid PowerSettingGuid,
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int AcValueIndex);
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[DllImport("PowrProf.dll", CharSet = CharSet.Unicode)]
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static extern UInt32 PowerWriteACValueIndex(IntPtr RootPowerKey,
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[MarshalAs(UnmanagedType.LPStruct)] Guid SchemeGuid,
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[MarshalAs(UnmanagedType.LPStruct)] Guid SubGroupOfPowerSettingsGuid,
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[MarshalAs(UnmanagedType.LPStruct)] Guid PowerSettingGuid,
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int AcValueIndex);
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[DllImport("PowrProf.dll", CharSet = CharSet.Unicode)]
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static extern UInt32 PowerReadACValueIndex(IntPtr RootPowerKey,
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[MarshalAs(UnmanagedType.LPStruct)] Guid SchemeGuid,
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[MarshalAs(UnmanagedType.LPStruct)] Guid SubGroupOfPowerSettingsGuid,
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[MarshalAs(UnmanagedType.LPStruct)] Guid PowerSettingGuid,
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out IntPtr AcValueIndex
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);
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[DllImport("PowrProf.dll", CharSet = CharSet.Unicode)]
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static extern UInt32 PowerReadDCValueIndex(IntPtr RootPowerKey,
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[MarshalAs(UnmanagedType.LPStruct)] Guid SchemeGuid,
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[MarshalAs(UnmanagedType.LPStruct)] Guid SubGroupOfPowerSettingsGuid,
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[MarshalAs(UnmanagedType.LPStruct)] Guid PowerSettingGuid,
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out IntPtr AcValueIndex
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);
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[DllImport("PowrProf.dll", CharSet = CharSet.Unicode)]
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static extern UInt32 PowerSetActiveScheme(IntPtr RootPowerKey,
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[MarshalAs(UnmanagedType.LPStruct)] Guid SchemeGuid);
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[DllImport("PowrProf.dll", CharSet = CharSet.Unicode)]
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static extern UInt32 PowerGetActiveScheme(IntPtr UserPowerKey, out IntPtr ActivePolicyGuid);
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static readonly Guid GUID_CPU = new Guid("54533251-82be-4824-96c1-47b60b740d00");
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static readonly Guid GUID_BOOST = new Guid("be337238-0d82-4146-a960-4f3749d470c7");
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[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
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public struct DEVMODE
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{
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
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public string dmDeviceName;
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public short dmSpecVersion;
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public short dmDriverVersion;
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public short dmSize;
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public short dmDriverExtra;
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public int dmFields;
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public int dmPositionX;
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public int dmPositionY;
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public int dmDisplayOrientation;
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public int dmDisplayFixedOutput;
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public short dmColor;
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public short dmDuplex;
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public short dmYResolution;
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public short dmTTOption;
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public short dmCollate;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
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public string dmFormName;
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public short dmLogPixels;
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public short dmBitsPerPel;
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public int dmPelsWidth;
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public int dmPelsHeight;
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public int dmDisplayFlags;
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public int dmDisplayFrequency;
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public int dmICMMethod;
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public int dmICMIntent;
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public int dmMediaType;
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public int dmDitherType;
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public int dmReserved1;
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public int dmReserved2;
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public int dmPanningWidth;
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public int dmPanningHeight;
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};
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[Flags()]
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public enum DisplaySettingsFlags : int
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{
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CDS_UPDATEREGISTRY = 1,
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CDS_TEST = 2,
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CDS_FULLSCREEN = 4,
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CDS_GLOBAL = 8,
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CDS_SET_PRIMARY = 0x10,
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CDS_RESET = 0x40000000,
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CDS_NORESET = 0x10000000
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}
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// PInvoke declaration for EnumDisplaySettings Win32 API
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[DllImport("user32.dll")]
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public static extern int EnumDisplaySettingsEx(
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string lpszDeviceName,
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int iModeNum,
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ref DEVMODE lpDevMode);
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// PInvoke declaration for ChangeDisplaySettings Win32 API
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[DllImport("user32.dll")]
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public static extern int ChangeDisplaySettingsEx(
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string lpszDeviceName, ref DEVMODE lpDevMode, IntPtr hwnd,
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DisplaySettingsFlags dwflags, IntPtr lParam);
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public const int ENUM_CURRENT_SETTINGS = -1;
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public const string laptopScreenName = "\\\\.\\DISPLAY1";
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public static DEVMODE CreateDevmode()
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{
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DEVMODE dm = new DEVMODE();
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dm.dmDeviceName = new String(new char[32]);
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dm.dmFormName = new String(new char[32]);
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dm.dmSize = (short)Marshal.SizeOf(dm);
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return dm;
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}
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public static Screen FindLaptopScreen()
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{
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var screens = Screen.AllScreens;
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Screen laptopScreen = null;
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foreach (var screen in screens)
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{
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if (screen.DeviceName == laptopScreenName)
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{
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laptopScreen = screen;
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}
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}
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if (laptopScreen is null) return null;
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else return laptopScreen;
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}
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public static int GetRefreshRate()
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{
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DEVMODE dm = CreateDevmode();
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Screen laptopScreen = FindLaptopScreen();
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int frequency = -1;
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if (laptopScreen is null)
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return -1;
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if (0 != NativeMethods.EnumDisplaySettingsEx(laptopScreen.DeviceName, NativeMethods.ENUM_CURRENT_SETTINGS, ref dm))
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{
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frequency = dm.dmDisplayFrequency;
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}
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return frequency;
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}
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public static int SetRefreshRate(int frequency = 120)
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{
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DEVMODE dm = CreateDevmode();
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Screen laptopScreen = FindLaptopScreen();
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if (laptopScreen is null)
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return -1;
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if (0 != NativeMethods.EnumDisplaySettingsEx(laptopScreen.DeviceName, NativeMethods.ENUM_CURRENT_SETTINGS, ref dm))
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{
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dm.dmDisplayFrequency = frequency;
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int iRet = NativeMethods.ChangeDisplaySettingsEx(laptopScreen.DeviceName, ref dm, IntPtr.Zero, DisplaySettingsFlags.CDS_UPDATEREGISTRY, IntPtr.Zero);
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return iRet;
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}
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return 0;
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}
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static Guid GetActiveScheme()
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{
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IntPtr pActiveSchemeGuid;
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var hr = PowerGetActiveScheme(IntPtr.Zero, out pActiveSchemeGuid);
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Guid activeSchemeGuid = (Guid)Marshal.PtrToStructure(pActiveSchemeGuid, typeof(Guid));
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return activeSchemeGuid;
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}
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public static int GetCPUBoost()
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{
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IntPtr AcValueIndex;
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Guid activeSchemeGuid = GetActiveScheme();
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UInt32 value = PowerReadACValueIndex(IntPtr.Zero,
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activeSchemeGuid,
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GUID_CPU,
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GUID_BOOST, out AcValueIndex);
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return AcValueIndex.ToInt32();
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}
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public static void SetCPUBoost(int boost = 0)
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{
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Guid activeSchemeGuid = GetActiveScheme();
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var hrAC = PowerWriteACValueIndex(
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IntPtr.Zero,
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activeSchemeGuid,
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GUID_CPU,
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GUID_BOOST,
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boost);
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PowerSetActiveScheme(IntPtr.Zero, activeSchemeGuid);
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var hrDC = PowerWriteDCValueIndex(
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IntPtr.Zero,
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activeSchemeGuid,
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GUID_CPU,
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GUID_BOOST,
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boost);
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PowerSetActiveScheme(IntPtr.Zero, activeSchemeGuid);
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}
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}
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