private T GetPowerInformation <T>(PowerInformationLevel informaitonLevel)
{
IntPtr inputBuffer = IntPtr.Zero;
int inputBufferLength = 0;
int outputBufferLength = Marshal.SizeOf <T>();
IntPtr outputBuffer = Marshal.AllocCoTaskMem(outputBufferLength);
var retval = PowerManagementInteroperation.CallNtPowerInformation(
(int)informaitonLevel,
inputBuffer,
inputBufferLength,
outputBuffer,
outputBufferLength);
Marshal.FreeHGlobal(inputBuffer);
if (retval == PowerManagementInteroperation.STATUS_SUCCESS)
{
var obj = Marshal.PtrToStructure <T>(outputBuffer);
Marshal.FreeHGlobal(outputBuffer);
return(obj);
}
else
{
throw new Win32Exception();
}
}
public void SetSuspendState(bool hibernate, bool force, bool wakeupEventsDisabled)
{
var result = PowerManagementInteroperation.SetSuspendState(hibernate, force, wakeupEventsDisabled);
if (!result)
{
throw new Win32Exception();
}
}
private void ExecuteHibernateFileAction(HibernateFileAction fileAction)
{
int inputBufferLength = Marshal.SizeOf <bool>();
IntPtr inputBuffer = Marshal.AllocCoTaskMem(inputBufferLength);
Marshal.WriteByte(inputBuffer, (byte)fileAction);
var retval = PowerManagementInteroperation.CallNtPowerInformation(
(int)PowerInformationLevel.SystemReserveHiberFile,
inputBuffer,
inputBufferLength,
IntPtr.Zero,
0);
Marshal.FreeHGlobal(inputBuffer);
if (retval == PowerManagementInteroperation.STATUS_SUCCESS)
{
}
else
{
throw new Win32Exception();
}
}
