platform-ibox-interface.md

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Platform::IBox Interface | Microsoft Docs		12/30/2016	cpp-windows				language-reference	VCCORLIB/Namespace not found::Platform VCCORLIB/Namespace not found::Platform::Value	C++	774df45d-f8a7-45a3-ae24-eecc3c681040	5	ghogen	ghogen	ghogen

Platform::IBox Interface

The Platform::IBox interface is the C++ name for the Windows::Foundation::IReference interface.

Syntax

template <typename T>  
interface class IBox  

Parameters

T
The type of the boxed value.

Remarks

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.

Requirements

Members

The Platform::IBox interface inherits from the Platform::IValueType interface. IBox has these members:

Properties

Method	Description
Value	Returns the unboxed value that was previously stored in this IBox instance.

IBox::Value Property

Returns the value that was originally stored in this object.

Syntax

property T Value {T get();}  

Parameters

T
The type of the boxed value.

Property Value/Return Value

Returns the value that was originally stored in this object.

Remarks

For an example, see Boxing.

See Also

Platform namespace