HRESULT SetCustData(
  REFGUID  guid,     
  VARIANT  *pVarVal  
);
 
Sets a value for custom data.
The return value obtained from the returned HRESULT is one of the following:
| Return value | Meaning | 
|---|---|
| S_OK | Success. | 
| E_OUTOFMEMORY | Out of memory. | 
| E_INVALIDARG | One or more of the arguments is invalid. |