static extern bool DeviceIoControl(
Microsoft.Win32.SafeHandles.SafeFileHandle hDevice,
uint IoControlCode,
ref BATTERY_WAIT_STATUS InBuffer,
int nInBufferSize,
ref BATTERY_STATUS OutBuffer,
int nOutBufferSize,
ref int pBytesReturned,
IntPtr Overlapped
);
public override void UpdateValues()
{
batterystats = Getbatterystatus(batterypath);
ForegroundMeter.Percent = batterystats.Capacity / 42400.0;
if (batterystats.Rate > 0)
{
BackgroundMeter.Percent = Clamp((batterystats.Rate - 29000) / 4000.0);
BackgroundMeter.ColorEnd = Color.FromArgb(0, 178, 148);
}
else if (batterystats.Rate == 0)
{
BackgroundMeter.Percent = 0.0;
}
else
{
BackgroundMeter.Percent = Clamp((-batterystats.Rate - 2000) / 10000.0);
BackgroundMeter.ColorEnd = Color.FromArgb(255, 178, 148);
}
HighlightMeter.Percent = 0.0;
//Debug.WriteLine(batterystats.Capacity);
}
private BATTERY_STATUS Getbatterystatus(string path)
{
BATTERY_WAIT_STATUS bws;
BATTERY_STATUS res = new BATTERY_STATUS();
SafeFileHandle hBattery;
int err = 0, outLen = 0;
int wait = 1000, s = 0;
hBattery = CreateFile(path, 0x80000000 | 0x40000000, 0x1 | 0x2, IntPtr.Zero, 3, 0x80, IntPtr.Zero);
err = Marshal.GetLastWin32Error();
DeviceIoControl(hBattery, 2703424, ref wait, Marshal.SizeOf(wait), ref s, Marshal.SizeOf(s), ref outLen, IntPtr.Zero);
err = Marshal.GetLastWin32Error();
bws.BatteryTag = s;
bws.Timeout = 10000;
bws.PowerState = 0x1 | 0x2 | 0x4 | 0x8;
bws.LowCapacity = 0;
bws.HighCapacity = 10000;
DeviceIoControl(hBattery, 2703436, ref bws, Marshal.SizeOf(bws), ref res, Marshal.SizeOf(res), ref outLen, IntPtr.Zero);
err = Marshal.GetLastWin32Error();
//MessageBox.Show(res.Capacity.ToString());
hBattery.Close();
return(res);
}
