Converts the specified storage object from OLE 2 structured storage to the OLE
1 storage model but does not include the presentation data. This is one of
several compatibility functions. You can use these functions to determine if an
object class is from OLE 1 and to convert objects between OLE 1 and OLE 2 storage
| IStorage * pStg,
||//Points to the OLE 2 storage object to be converted
| LPOLESTREAM lpolestm
||//Points to the stream where the OLE1 storage is written
Points to the storage object to be converted to an OLE 1 storage.
Points to a stream where the persistent representation of the object is saved
using the OLE 1 storage model.
Indicates the storage object was successfully converted and the OLESTREAM
structure contains the persistent representation of an OLE 1 object.
Indicates object cannot be converted because its storage is missing a stream.
Indicates the specified storage object contains a Paintbrush object in DIB
format and there is no presentation data in the OLESTREAM
Indicates invalid value for the pstg
This function converts an OLE 2 storage object to OLE 1 format. The OLESTREAM
code implemented for OLE 1 must be available.
On entry, the stream pointed to by lpolestm
should be created and positioned just as it would be for an OleSaveToStream
call. On exit, the stream contains the persistent representation of the
object using OLE 1 storage.
Paintbrush objects are dealt with differently from other objects because
their native data is in DIB format. When Paintbrush objects are converted using OleConvertIStorageToOLESTREAM
, no presentation data is added to the OLESTREAM
. To include presentation data, use the OleConvertIStorageToOLESTREAMEx
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