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title: "AsWeak Function | Microsoft Docs"
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---
# AsWeak Function
Retrieves a weak reference to a specified instance.  
  
## Syntax  
  
```  
template<  
   typename T  
>  
HRESULT AsWeak(  
   _In_ T* p,  
   _Out_ WeakRef* pWeak  
);  
```  
  
#### Parameters  
 `T`  
 A pointer to the type of parameter `p`.  
  
 `p`  
 An instance of a type.  
  
 `pWeak`  
 When this operation completes, a pointer to a weak reference to parameter `p`.  
  
## Return Value  
 S_OK, if this operation is successful; otherwise, an error HRESULT that indicates the cause of the failure.  
  
## Requirements  
 **Header:** client.h  
  
 **Namespace:** Microsoft::WRL  
  
## See Also  
 [Microsoft::WRL Namespace](../windows/microsoft-wrl-namespace.md)