////////////////////////////////////////////////////////////////////////
// Function name : ViewModel
// Description : Constructor
// :
// Return type :
// Argument : Frontend - Form Class
////////////////////////////////////////////////////////////////////////
public ViewModel( Frontend fe)
{
// Get Form class as we need to update when data arrives
frontend = fe ;
// create the delegates for the callback functions
md = new MRZDelegate(MRZCallback);
id = new ImageDelegate(ImageCallback);
Status = new DLL_STATUS();
}