how-to-declare-pinning-pointers-and-value-types.md

title	ms.custom	ms.date	ms.reviewer	ms.suite	ms.technology	ms.tgt_pltfrm	ms.topic	dev_langs	helpviewer_keywords	ms.assetid	caps.latest.revision	author	ms.author	manager
How to: Declare Pinning Pointers and Value Types | Microsoft Docs		11/04/2016			cpp-windows		language-reference	C++	value types, declaring pinning pointers	57c5ec8a-f85a-48c4-ba8b-a81268bcede0	8	mikeblome	mblome	ghogen

How to: Declare Pinning Pointers and Value Types

A value type can be implicitly boxed. You can then declare a pinning pointer to the value type object itself and use a pin_ptr to the boxed value type.

Example

Code

// pin_ptr_value.cpp  
// compile with: /clr  
value struct V {  
   int i;  
};  
  
int main() {  
   V ^ v = gcnew V;   // imnplicit boxing  
   v->i=8;  
   System::Console::WriteLine(v->i);  
   pin_ptr<V> mv = &*v;  
   mv->i = 7;  
   System::Console::WriteLine(v->i);  
   System::Console::WriteLine(mv->i);  
}  

Output

8  
7  
7  

See Also

pin_ptr (C++/CLI)