[英]Get Windows power plans/schemes in C# (using WinAPI)
I'm interested in getting all power plans that you have in your computer using C#. 我有兴趣使用C#获取计算机中的所有电源计划。
I was thinking you might be able to use the API PowerEnumerate function in some way: 我以为你可能会以某种方式使用API PowerEnumerate函数:
DWORD WINAPI PowerEnumerate(
_In_opt_ HKEY RootPowerKey,
_In_opt_ const GUID *SchemeGuid,
_In_opt_ const GUID *SubGroupOfPowerSettingsGuid,
_In_ POWER_DATA_ACCESSOR AccessFlags,
_In_ ULONG Index,
_Out_opt_ UCHAR *Buffer,
_Inout_ DWORD *BufferSize
);
But I have no idea on how to as I really don't know C. So.. How can I like, enumerate through all available power plans and create aa list of them. 但是我不知道怎么样,因为我真的不知道C.所以..我怎么样,列举所有可用的电力计划并创建一个列表。 I then want to be able to access each power plans GUID and their "user friendly name". 然后,我希望能够访问每个电源计划GUID及其“用户友好名称”。
So.. Perhaps if someone who is good at using the WinAPI from C# who would like to help, that would be great - or if someone has a better solution. 所以..也许如果有人擅长使用C#的WinAPI想要提供帮助,那就太好了 - 或者如果有人有更好的解决方案。 I've really tried to find a good answer to this but there doesn't seem to be any. 我真的试图找到一个很好的答案,但似乎没有。 I think this would help a lot of people. 我认为这会对很多人有所帮助。
Can anyone help with this? 有人能帮忙吗?
This should do it: 这应该这样做:
using System;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Collections.Generic;
public class Program
{
[DllImport("PowrProf.dll")]
public static extern UInt32 PowerEnumerate(IntPtr RootPowerKey, IntPtr SchemeGuid, IntPtr SubGroupOfPowerSettingGuid, UInt32 AcessFlags, UInt32 Index, ref Guid Buffer, ref UInt32 BufferSize);
[DllImport("PowrProf.dll")]
public static extern UInt32 PowerReadFriendlyName(IntPtr RootPowerKey, ref Guid SchemeGuid, IntPtr SubGroupOfPowerSettingGuid, IntPtr PowerSettingGuid, IntPtr Buffer, ref UInt32 BufferSize);
public enum AccessFlags : uint
{
ACCESS_SCHEME = 16,
ACCESS_SUBGROUP = 17,
ACCESS_INDIVIDUAL_SETTING = 18
}
private static string ReadFriendlyName(Guid schemeGuid)
{
uint sizeName = 1024;
IntPtr pSizeName = Marshal.AllocHGlobal((int)sizeName);
string friendlyName;
try
{
PowerReadFriendlyName(IntPtr.Zero, ref schemeGuid, IntPtr.Zero, IntPtr.Zero, pSizeName, ref sizeName);
friendlyName = Marshal.PtrToStringUni(pSizeName);
}
finally
{
Marshal.FreeHGlobal(pSizeName);
}
return friendlyName;
}
public static IEnumerable<Guid> GetAll()
{
var schemeGuid = Guid.Empty;
uint sizeSchemeGuid = (uint)Marshal.SizeOf(typeof(Guid));
uint schemeIndex = 0;
while (PowerEnumerate(IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, (uint)AccessFlags.ACCESS_SCHEME, schemeIndex, ref schemeGuid, ref sizeSchemeGuid) == 0)
{
yield return schemeGuid;
schemeIndex++;
}
}
public static void Main()
{
var guidPlans = GetAll();
foreach (Guid guidPlan in guidPlans)
{
Console.WriteLine(ReadFriendlyName(guidPlan));
}
}
}
You might have to run this program as administrator for security purposes. 出于安全考虑,您可能必须以管理员身份运行此程序。
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