---
title: "registration_script | Microsoft Docs"
ms.custom: ""
ms.date: "11/04/2016"
ms.reviewer: ""
ms.suite: ""
ms.technology:  
  - "cpp-windows"
ms.tgt_pltfrm: ""
ms.topic: "language-reference"
f1_keywords: 
  - "vc-attr.registration_script"
dev_langs: 
  - "C++"
helpviewer_keywords: 
  - "registration_script attribute"
ms.assetid: 786f8072-9187-4163-a979-7a604dd4c888
caps.latest.revision: 10
author: "mikeblome"
ms.author: "mblome"
manager: "ghogen"
translation.priority.ht: 
  - "cs-cz"
  - "de-de"
  - "es-es"
  - "fr-fr"
  - "it-it"
  - "ja-jp"
  - "ko-kr"
  - "pl-pl"
  - "pt-br"
  - "ru-ru"
  - "tr-tr"
  - "zh-cn"
  - "zh-tw"
---
# registration_script
Executes the specified custom registration script.  
  
## Syntax  
  
```  
  
      [ registration_script(   
   script   
) ]  
```  
  
#### Parameters  
 *script*  
 The full path to a custom registration script (.rgs) file. A value of **none**, such as `script = "none"`, indicates that the coclass has no registration requirements.  
  
## Remarks  
 The **registration_script** C++ attribute executes the custom registration script specified by **script**. If this attribute is not specified, a standard .rgs file (containing information for registering the component) is used. For more information on .rgs files, see [The ATL Registry Component (Registrar)](../atl/atl-registry-component-registrar.md).  
  
 This attribute requires that the [coclass](../windows/coclass.md), [progid](../windows/progid.md), or [vi_progid](../windows/vi-progid.md) attribute (or another attribute that implies one of these) also be applied to the same element.  
  
## Example  
 The following code specifies that the component has a registry script called cpp_attr_ref_registration_script.rgs.  
  
```  
// cpp_attr_ref_registration_script.cpp  
// compile with: /LD  
#define _ATL_ATTRIBUTES  
#include "atlbase.h"  
#include "atlcom.h"  
  
[module (name="REG")];  
  
[object, uuid("d9cd196b-6836-470b-9b9b-5b04b828e5b0")]  
__interface IFace {};  
  
// requires "cpp_attr_ref_registration_script.rgs"  
// create sample .RGS file "cpp_attr_ref_registration_script.rgs" if it does not exist  
[ coclass, registration_script(script="cpp_attr_ref_registration_script.rgs"),  
  uuid("50d3ad42-3601-4f26-8cfe-0f1f26f98f67")]  
class CMyClass:public IFace {};  
```  
  
## Requirements  
  
### Attribute Context  
  
|||  
|-|-|  
|**Applies to**|**class**, `struct`|  
|**Repeatable**|No|  
|**Required attributes**|One or more of the following: **coclass**, **progid**, or **vi_progid**.|  
|**Invalid attributes**|None|  
  
 For more information about the attribute contexts, see [Attribute Contexts](../windows/attribute-contexts.md).  
  
## See Also  
 [COM Attributes](../windows/com-attributes.md)   
 [Class Attributes](../windows/class-attributes.md)   
 [rdx](../windows/rdx.md)