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title: "_com_error::operator = | Microsoft Docs"
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---
# _com_error::operator =
**Microsoft Specific**  
  
 Assigns an existing `_com_error` object to another.  
  
## Syntax  
  
```  
  
      _com_error& operator = (  
   const _com_error& that   
) throw ( );  
```  
  
#### Parameters  
 `that`  
 A `_com_error` object.  
  
 **END Microsoft Specific**  
  
## See Also  
 [_com_error Class](../cpp/com-error-class.md)