---
title: "_com_error::Source | Microsoft Docs"
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---
# _com_error::Source
**Microsoft Specific**  
  
 Calls **IErrorInfo::GetSource** function.  
  
## Syntax  
  
```  
  
_bstr_t Source() const;  
  
```  
  
## Return Value  
 Returns the result of **IErrorInfo::GetSource** for the **IErrorInfo** object recorded within the `_com_error` object. The resulting BSTR is encapsulated in a `_bstr_t` object. If no **IErrorInfo** is recorded, it returns an empty `_bstr_t`.  
  
## Remarks  
 Any failure while calling the **IErrorInfo::GetSource** method is ignored.  
  
 **END Microsoft Specific**  
  
## See Also  
 [_com_error Class](../cpp/com-error-class.md)