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title: "ptr | Microsoft Docs"
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---
# ptr
Designates a pointer as a full pointer.  
  
## Syntax  
  
```  
  
[ptr]  
  
```  
  
## Remarks  
 The **ptr** C++ attribute has the same functionality as the [ptr](http://msdn.microsoft.com/library/windows/desktop/aa367149) MIDL attribute.  
  
## Example  
 See the example for [defaultvalue](../windows/defaultvalue.md) for a sample use of **ptr**.  
  
## Requirements  
  
### Attribute Context  
  
|||  
|-|-|  
|**Applies to**|Interface parameter, interface method, `typedef`|  
|**Repeatable**|No|  
|**Required attributes**|None|  
|**Invalid attributes**|None|  
  
 For more information about the attribute contexts, see [Attribute Contexts](../windows/attribute-contexts.md).  
  
## See Also  
 [IDL Attributes](../windows/idl-attributes.md)   
 [Interface Attributes](../windows/interface-attributes.md)   
 [Method Attributes](../windows/method-attributes.md)   
 [Typedef, Enum, Union, and Struct Attributes](../windows/typedef-enum-union-and-struct-attributes.md)