ADOStreamConstruction Interface

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

This interface supports the following properties:

Properties

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);
   

3. Call the IADOStreamConstruction::put_Stream property method to set the OLE DB IStream object on the ADO Stream object:

   IUnknown *pUnk=NULL;
   pStream->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 and later

Library: msado15.dll

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

See Also