//Instance method has 2 parameters
//1. Enumerator for a list of items to be displayed. Each item implements
//IMenuItem interface, which means that it knows howto display itself
//2. Delegate for the method which will be called on the selected item
//when the user presses enter key
public static new IState Instance(IDoubleEnumerator ide, ProcessSelectedItem psi)
{
#if WindowsCE
return(List.Instance(ide, psi));
#else
ListForm.SetList(ide);
ProcessSelected = psi;
List.Instance(ide);
return(state);
#endif
}