---
description: "Learn more about: ptr"
title: "ptr (C++ COM Attribute)"
ms.date: "10/02/2018"
f1_keywords: ["vc-attr.ptr"]
helpviewer_keywords: ["ptr attribute"]
ms.assetid: 95eaea57-a5be-45f6-a612-ba2c9bc4645a
---
# ptr

Designates a pointer as a full pointer.

## Syntax

```cpp
[ptr]
```

## Remarks

The **ptr** C++ attribute has the same functionality as the [ptr](/windows/win32/Midl/ptr) MIDL attribute.

## Example

See the example for [defaultvalue](defaultvalue.md) for a sample use of **ptr**.

## Requirements

| Attribute context | Value |
|-|-|
|**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](cpp-attributes-com-net.md#contexts).

## See also

[IDL Attributes](idl-attributes.md)<br/>
[Interface Attributes](interface-attributes.md)<br/>
[Method Attributes](method-attributes.md)<br/>
[Typedef, Enum, Union, and Struct Attributes](typedef-enum-union-and-struct-attributes.md)