---
title: "_com_error::WCode"
ms.date: "11/04/2016"
f1_keywords: ["_com_error::WCode"]
helpviewer_keywords: ["WCode method [C++]"]
ms.assetid: f3b21852-f8ea-4e43-bff1-11c2d35454c4
---
# _com_error::WCode

**Microsoft Specific**

Retrieves the 16-bit error code mapped into the encapsulated HRESULT.

## Syntax

```
WORD WCode ( ) const throw( );
```

## Return Value

If the HRESULT is within the range 0x80040200 to 0x8004FFFF, the `WCode` method returns the HRESULT minus 0x80040200; otherwise, it returns zero.

## Remarks

The `WCode` method is used to undo a mapping that happens in the COM support code. The wrapper for a `dispinterface` property or method calls a support routine that packages the arguments and calls `IDispatch::Invoke`. Upon return, if a failure HRESULT of `DISP_E_EXCEPTION` is returned, the error information is retrieved from the `EXCEPINFO` structure passed to `IDispatch::Invoke`. The error code can either be a 16-bit value stored in the `wCode` member of the `EXCEPINFO` structure or a full 32-bit value in the `scode` member of the `EXCEPINFO` structure. If a 16-bit `wCode` is returned, it must first be mapped to a 32-bit failure HRESULT.

**END Microsoft Specific**

## See also

[_com_error::HRESULTToWCode](../cpp/com-error-hresulttowcode.md)<br/>
[_com_error::WCodeToHRESULT](../cpp/com-error-wcodetohresult.md)<br/>
[_com_error Class](../cpp/com-error-class.md)