MONITEUR DE BATTERIE, POCKET PC

using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace PowerStatus
{
    public partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
        }
        
        // Structure de données utilisée pour la lecture d'informations sur l'état de batterie
        public class SYSTEM_POWER_STATUS_EX2
        {
            public byte ACLineStatus;
            public byte BatteryFlag;
            public byte BatteryLifePercent;
            public byte Reserved1;
            public uint BatteryLifeTime;
            public uint BatteryFullLifeTime;
            public byte Reserved2;
            public byte BackupBatteryFlag;
            public byte BackupBatteryLifePercent;
            public byte Reserved3;
            public uint BackupBatteryLifeTime;
            public uint BackupBatteryFullLifeTime;
            public uint BatteryVoltage;
            public uint BatteryCurrent;
            public uint BatteryAverageCurrent;
            public uint BatteryAverageInterval;
            public uint BatterymAHourConsumed;
            public uint BatteryTemperature;
            public uint BackupBatteryVoltage;
            public byte BatteryChemistry;
        }
        [DllImport("coredll")]
        private static extern uint GetSystemPowerStatusEx2(SYSTEM_POWER_STATUS_EX2 lpSystemPowerStatus, uint dwLen, bool fUpdate);

        private void timer_Tick(object sender, System.EventArgs e)
        {
            // Appelle de la fonction, on lui passe le pointeur de la structure.
            // elle remplit la structure de données et lit les données simplement

            SYSTEM_POWER_STATUS_EX2 status = new SYSTEM_POWER_STATUS_EX2();

            if (GetSystemPowerStatusEx2(status, (uint)Marshal.SizeOf(status), false) == (uint)Marshal.SizeOf(status))
            {
                // La barre de progression principale
                this.lblMainBat.Text = String.Format("{0}%", status.BatteryLifePercent);
                this.pbrMainLevel.Value = status.BatteryLifePercent;

                switch (status.ACLineStatus)
                {
                    case 0:
                        this.lblACStatus.Text = "Chargeur non connecté.";
                        break;
                    case 1:
                        this.lblACStatus.Text = "En charge.";
                        break;
                    case 2:
                        this.lblACStatus.Text = "Batterie secondaire en service.";
                        break;
                    case 3:
                        this.lblACStatus.Text = "Unconnu.";
                        break;
                    default:
                        break;
                }
                // Barre de progression secondaire.
                this.lblBackupBat.Text = String.Format("{0}%", status.BackupBatteryLifePercent);
                this.pbrBackLevel.Value = status.BackupBatteryLifePercent;
            }
        }

        private void menuItem1_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("Voullez vous vraiment quitter l'application?","Confirmation de sortie",MessageBoxButtons.YesNo,MessageBoxIcon.Question, MessageBoxDefaultButton.Button1) == DialogResult.Yes)
                Application.Exit();
        }

        private void menuItem2_Click(object sender, EventArgs e)
        {
            timer_Tick(this, EventArgs.Empty);
        }
    }
}