---
title: "_bstr_t::length | Microsoft Docs"
ms.custom: ""
ms.date: "11/04/2016"
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ms.technology: ["cpp-language"]
ms.tgt_pltfrm: ""
ms.topic: "language-reference"
f1_keywords: ["_bstr_t::length"]
dev_langs: ["C++"]
helpviewer_keywords: ["length method [C++]", "BSTR object [C++], length"]
ms.assetid: 4f2e2c76-8894-4ef9-833f-4c6e796d0654
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author: "mikeblome"
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---
# _bstr_t::length
**Microsoft Specific**  
  
 Returns the number of characters in the `_bstr_t`, not including the terminating null, of the encapsulated `BSTR`.  
  
## Syntax  
  
```  
  
unsigned int length ( ) const throw( );  
  
```  
  
## Remarks  
 **END Microsoft Specific**  
  
## See Also  
 [_bstr_t Class](../cpp/bstr-t-class.md)