IntPtr problem

we are developing our first app on motorola mc9200 (android) with visual studio, and we start explore the functionality with EMDK SDK, we looked examples and is all quite ok, but now we need to move the IEMDKListener interface from the main activity to one specialized class, we have implemented the interface IEMDKListener on class,

 

  public class BarCode : IDisposable, EMDKManager.IEMDKListener

....

 

but requiere IntPtr Handle property, how to implement it?

 

        public IntPtr Handle

        {

            get

            {

                return ??;

            }

        }

 

there are example of this situation?

 

another question, is possible enable/disable the led on device? we need to signal particular situation.

 

thanks