基本原理：通过 GetSystemPowerStatus 这个 API 获得当前系统的电池电量信息，以1秒为间隔进行查询，查询结果保存到文件中同时输出到屏幕上。收到按键后退出。
代码如下：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Runtime.InteropServices;using System.Threading;using System.IO;namespace GeetBatter{ class Program { [StructLayout(LayoutKind.Sequential)] public struct SYSTEM_POWER_STATUS { public byte ACLineStatus; public byte BatteryFlag; public byte BatteryLifePercent; public byte Reserved1; public int BatteryLifeTime; public int BatteryFullLifeTime; } [DllImport("kernel32.dll", CharSet = CharSet.Auto, ExactSpelling = true)] public static extern bool GetSystemPowerStatus([In, Out] ref SYSTEM_POWER_STATUS systemPowerStatus); static void Main(string[] args) { // The system power charger struct SYSTEM_POWER_STATUS status = new SYSTEM_POWER_STATUS(); Boolean Running = true; DateTime currentTime; String Result; String Filename = DateTime.Now.ToString("HHmmss")+".txt"; FileStream fs = new FileStream(Filename, FileMode.Append); StreamWriter wr = new StreamWriter(fs); while (Running) { Thread.Sleep(1000); while (Console.KeyAvailable) { Console.ReadKey(true); Running = false; } // Get Power status from Kernell GetSystemPowerStatus(ref status); currentTime = DateTime.Now; Result = currentTime.ToString("HH:mm:ss") + "," + status.BatteryLifePercent; Console.WriteLine(Result); wr.WriteLine(Result); } wr.Close(); Console.WriteLine("Program would exit"); Console.ReadLine(); } }} |