public BattaryState GetSystemBatteryState()
{
IntPtr state = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(BattaryState)));
int ntStatus = PowerManagementInterop.CallNtPowerInformation(
5,
IntPtr.Zero,
0,
state,
(UInt32)Marshal.SizeOf(typeof(BattaryState))
);
return((BattaryState)Marshal.PtrToStructure(state, typeof(BattaryState)));
}
public PowerInformaion GetSystemPowerInformation()
{
IntPtr state = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(PowerInformaion)));
int ntStatus = PowerManagementInterop.CallNtPowerInformation(
12,
IntPtr.Zero,
0,
state,
(UInt32)Marshal.SizeOf(typeof(PowerInformaion))
);
return((PowerInformaion)Marshal.PtrToStructure(state, typeof(PowerInformaion)));
}
public string GetLastWakeTime()
{
IntPtr lastWake = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(long)));
int ntStatus = PowerManagementInterop.CallNtPowerInformation(
14,
IntPtr.Zero,
0,
lastWake,
(uint)Marshal.SizeOf(typeof(long))
);
long lastWakeTimeInSeconds = Marshal.ReadInt64(lastWake, 0) / 10000000;
TimeSpan time = TimeSpan.FromSeconds(lastWakeTimeInSeconds);
return(DateTime.Today.Add(time).ToString());
}
public void SetSuspendState(bool hibernate)
{
PowerManagementInterop.SetSuspendState(hibernate, false, false);
}