public SystemBatteryState GetSystemBatteryState()
{
IntPtr status = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(SystemBatteryState)));
Win32FunctionInvokeWrapper.CallNtPowerInformation(INFORMATION_LEVEL.SystemBatteryState, IntPtr.Zero, 0, status, (UInt32)Marshal.SizeOf(typeof(SystemBatteryState)));
return((SystemBatteryState)Marshal.PtrToStructure(status, typeof(SystemBatteryState)));
}
public DateTime GetLastSleepTime()
{
IntPtr status = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(long)));
Win32FunctionInvokeWrapper.CallNtPowerInformation(INFORMATION_LEVEL.LastSleepTime, (IntPtr)null, 0, status, (UInt32)Marshal.SizeOf(typeof(long)));
long lastSleepTime = (long)Marshal.PtrToStructure(status, typeof(long));
return(DateTime.FromFileTime(lastSleepTime));
}