根据网上搜集资料，最后整理 分享下
using System;
using System.Linq;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Drawing;
namespace PDAeffect
{
public class BatteryControl
{
/// <summary>
/// 外边框
/// </summary>
private Point[] BatteryPolygon = new Point[8];
/// <summary>
/// 是否充电状态
/// </summary>
private State AState = State.Normal;
private int Percent = 0;
private int iLeft = 30 + 2, iTop = 178, iWidth = 20, iHeight = 10;
private int iRectWidth = 0;
private Rectangle Rect = new Rectangle();
private string text = "";
private SYSTEM_POWER_STATUS_EX status = new SYSTEM_POWER_STATUS_EX();
/// <summary>
/// 电池当前状态 Charge：充电中；UnderCharge：电量不足；Normal：电池正常使用.
/// </summary>
public enum State
{
/// <summary>
/// 充电中
/// </summary>
Charge,
/// <summary>
/// 充电不足
/// </summary>
UnderCharge,
/// <summary>
/// 正常状态
/// </summary>
Normal,
/// <summary>
/// 充电完成
/// </summary>
ChargeFinally
};
private class SYSTEM_POWER_STATUS_EX
{
public byte ACLineStatus = 0;
public byte BatteryFlag = 0;
public byte BatteryLifePercent = 0;
public byte Reserved1 = 0;
public uint BatteryLifeTime = 0;
public uint BatteryFullLifeTime = 0;
public byte Reserved2 = 0;
public byte BackupBatteryFlag = 0;
public byte BackupBatteryLifePercent = 0;
public byte Reserved3 = 0;
public uint BackupBatteryLifeTime = 0;
public uint BackupBatteryFullLifeTime = 0;
}
[DllImport("coredll")]
private static extern int GetSystemPowerStatusEx(SYSTEM_POWER_STATUS_EX lpSystemPowerStatus, bool fUpdate);
[DllImport("coredll")]
public static extern void SystemIdleTimerReset();
/// <summary>
/// 构造函数 在屏幕默认位置构建电池形状
/// </summary>
public void Battery()
{
SetPolygon();
}
/// <summary>
/// 构造函数 电池形状的X和Y坐标
/// </summary>
/// <param name="StartLeft">电池形状的X坐标</param>
/// <param name="StartTop">电池形状的Y坐标</param>
public void Battery(int StartLeft, int StartTop)
{
iLeft = StartLeft;
iTop = StartTop;
SetPolygon();
}
/// <summary>
/// 构造函数 根据X坐标、Y坐标、宽度、高度构造电池形状
/// </summary>
/// <param name="StartLeft">电池形状的X坐标</param>
/// <param name="StartTop">电池形状的Y坐标</param>
/// <param name="StartWidth">电池形状的宽度</param>
/// <param name="StartHeight">电池形状的高度</param>
public void Battery(int StartLeft, int StartTop, int StartWidth, int StartHeight)
{
iLeft = StartLeft;
iTop = StartTop;
iWidth = StartWidth;
iHeight = StartHeight;
SetPolygon();
}
/// <summary>
/// 设置电池形状
/// </summary>
void SetPolygon()
{
int Head = 2;
int HeightLowHalf = (Height - Head) / 2;
//外边框
BatteryPolygon[0].X = iLeft;
BatteryPolygon[0].Y = iTop;
BatteryPolygon[1].X = iLeft + iWidth;
BatteryPolygon[1].Y = iTop;
BatteryPolygon[2].X = iLeft + iWidth;
BatteryPolygon[2].Y = iTop + HeightLowHalf;
BatteryPolygon[3].X = iLeft + iWidth + Head;
BatteryPolygon[3].Y = iTop + HeightLowHalf;
BatteryPolygon[4].X = iLeft + iWidth + Head;
BatteryPolygon[4].Y = iTop + HeightLowHalf + Head;
BatteryPolygon[5].X = iLeft + iWidth;
BatteryPolygon[5].Y = iTop + HeightLowHalf + Head;
BatteryPolygon[6].X = iLeft + iWidth;
BatteryPolygon[6].Y = iTop + HeightLowHalf + Head + HeightLowHalf;
BatteryPolygon[7].X = iLeft;
BatteryPolygon[7].Y = iTop + HeightLowHalf + Head + HeightLowHalf;
//内矩形
Rect.X = BatteryPolygon[0].X + 2;
Rect.Y = BatteryPolygon[0].Y + 2;
Rect.Width = BatteryPolygon[6].X - BatteryPolygon[0].X - 3;
Rect.Height = BatteryPolygon[6].Y - BatteryPolygon[0].Y - 3;
iRectWidth = Rect.Width;
GetBatteryState();
}
/// <summary>
/// 获取电池状态
/// </summary>
public void GetBatteryState()
{
if (GetSystemPowerStatusEx(status, false) == 1)
{
if (status.ACLineStatus == 1)
{
//BatteryFlag = 128 充电完成
if(status.BatteryFlag == 128)
//if (status.BatteryLifePercent >= 100)
{
//status.BatteryLifePercent = 100; //.BatteryFullLifeTime
text = "充电完成...";
AState = State.ChargeFinally;
} //BatteryFlag = 8 正在充电
else
{
AState = State.Charge;
text = "充电中...";
}
}
else
{
//BatteryFlag = 1 正在使用电池
AState = State.Normal;
if (status.BatteryLifePercent > 100) status.BatteryLifePercent = 100;
text = status.BatteryLifePercent.ToString() + "%";
}
Percent = status.BatteryLifePercent;
if (Percent <= 20)
{
AState = State.UnderCharge;
text = "电量不足...";
}
Rect.Width = iRectWidth * ((Percent + 5) > 100 ? 100 : Percent + 8) / 100;
}
}
/// <summary>
/// 电池形状X坐标
/// </summary>
public int Left
{
get { return iLeft; }
set { iLeft = value; SetPolygon(); }
}
/// <summary>
/// 电池形状Y坐标
/// </summary>
public int Top
{
get { return iTop; }
set { iTop = value; SetPolygon(); }
}
/// <summary>
/// 电池形状宽度
/// </summary>
public int Width
{
get { return iWidth; }
set { iWidth = value; SetPolygon(); }
}
/// <summary>
/// 电池形状高度
/// </summary>
public int Height
{
get { return iHeight; }
set { iHeight = value; SetPolygon(); }
}
/// <summary>
/// 电池电量百分比
/// </summary>
public int BatteryPercent
{
get { return Percent; }
}
/// <summary>
/// 电池状态
/// </summary>
public Rectangle BatteryState
{
get
{
GetBatteryState();
return Rect;
}
}
/// <summary>
/// 电池外边框
/// </summary>
public Point[] BatteryStateRect
{
get { return BatteryPolygon; }
set { BatteryPolygon = value; }
}
/// <summary>
/// 当前电池状态，有充电、充电不足、正常 三种状态
/// </summary>
public State Status
{
get { return AState; }
}
/// <summary>
/// 电池显示的内容
/// </summary>
public string Text
{
get { return text; }
}
}
}
方法1：
WinCE获取电池充电状态
SYSTEM_POWER_STATUS_EX2 powerState;
memset(&powerState, 0, sizeof(powerState));
DWORD dwResult = GetSystemPowerStatusEx2(&powerState, sizeof(powerState), TRUE);
if(dwResult != 0)
{
if(powerState.ACLineStatus == AC_LINE_ONLINE)
{
//MessageBox(_T("交流电"));
if(powerState.BatteryFlag != BATTERY_FLAG_HIGH)
{
// 正在充电
//SetPowerStepBmp(200);
MessageBox(_T("充电..."));
}
else
{
// 充电结束
//SetPowerStepBmp(300);
MessageBox(_T("充电结束..."));
}
}
else
{
MessageBox(_T("直流电"));
//INT pow = GetPowerStep((INT)powerState.BatteryLifePercent);
//SetPowerStepBmp((INT)powerState.BatteryLifePercent);
}
}
效果图（见右上角）：
(部分桌面内容，受保护已抹掉)
