The Platform::IBox interface is the C++ name for the Windows::Foundation::IReference interface.
template <typename T>
interface class IBoxT
The type of the boxed value.
The IBox<T> interface is primarily used internally to represent nullable value types, as described in Value classes and structs (C++/CX). The interface is also used to box value types that are passed to C++ methods that take parameters of type Object^. You can explicitly declare an input parameter as IBox<SomeValueType>. For an example, see Boxing.
The Platform::IBox interface inherits from the Platform::IValueType interface. IBox has these members:
Properties
Returns the value that was originally stored in this object.
property T Value {T get();}T
The type of the boxed value.
Returns the value that was originally stored in this object.
For an example, see Boxing.