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adostreamconstruction-interface.md

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title ADOStreamConstruction Interface | Microsoft Docs
ms.prod sql
ms.prod_service connectivity
ms.technology connectivity
ms.custom
ms.date 01/19/2017
ms.reviewer
ms.topic conceptual
apitype COM
f1_keywords
ADOStreamConstruction
helpviewer_keywords
ADOStreamConstruction interface [ADO]
ms.assetid 92f5a939-3e1a-4b14-a9dd-90e6ce2dec74
author MightyPen
ms.author genemi

ADOStreamConstruction Interface

The ADOStreamConstruction interface is used to construct an ADO Stream object from an OLE DB IStream object in a C/C++ application.

Properties
Stream Property Read/Write. Gets/sets an OLE DB Stream object.

Methods

None.

Events

None.

Remarks

Given an OLE DB IStream object (pStream), the construction of an ADO Stream object (adoStr) amounts to the following three basic operations:

  1. Create an ADO Stream object:

    Stream20Ptr adoStr;  
adoStr.CreateInstance(__uuidof(Stream));

  2. Query the IADOStreamConstruction interface on the Stream object:

    adoStreamConstructionPtr adoStrConstruct=NULL;  
adoStr->QueryInterface(__uuidof(ADOStreamConstruction),  
                     (void**)&adoStrConstruct);

Call the IADOStreamConstruction::get_Stream property method to set the OLE DB IStream object on the ADO Stream object:

IUnknown *pUnk=NULL;  
pRowset->QueryInterface(IID_IUnknown, (void**)&pUnk);  
adoStrConstruct->put_Stream(pUnk);

The resultant adoStr object now represents the ADO Stream object constructed from the OLE DB IStream object.

Requirements

Version: ADO 2.0 or a later version

Library: msado15.dll

UUID: 00000283-0000-0010-8000-00AA006D2EA4

See Also

ADO API Reference