public static extern NtStatus NtAlpcQueryInformation( SafeKernelObjectHandle PortHandle, AlpcPortInformationClass PortInformationClass, SafeBuffer PortInformation, int Length, out int ReturnLength );
public static extern NtStatus NtAlpcSetInformation( [In] SafeKernelObjectHandle PortHandle, AlpcPortInformationClass PortInformationClass, SafeBuffer PortInformation, int Length);