wiasWritePageBufToStream function (wiamdef.h)
The wiasWritePageBufToStream function writes the contents of a temporary page buffer to the IStream interface provided by the application.
Syntax
HRESULT wiasWritePageBufToStream(
[in] PMINIDRV_TRANSFER_CONTEXT pmdtc,
[in] IStream *pstream
);
Parameters
[in] pmdtc
Pointer to a MINIDRV_TRANSFER_CONTEXT structure.
[in] pstream
Pointer to the IStream data stream provided by the application. The IStream interface is described in the Microsoft Windows SDK documentation.
Return value
On success, the function returns S_OK. If the function fails, it returns a standard COM error or one of the WIA_ERROR_XXX errors (described in the Windows SDK documentation).
Remarks
The function writes data from a temporary page buffer that is allocated by a minidriver to the image data stream provided by the calling application. Minidrivers typically call this function after acquiring a page of data for which the minidriver allocated a temporary buffer.
This function is similar to wiasWriteBufToFile and wiasWritePageBufToFile. The wiasWriteBufToFile function can be used to write a buffer of image data to any type of image file. The wiasWritePageBufToFile function can be used to write a page of image data to a multipage TIFF file with all appropriate tags and image file directory (IFD) entries. If the driver intends to write this multipage TIFF file data to a stream, it would call wiasWritePageBufToStream.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Desktop |
| Header | wiamdef.h (include Wiamdef.h) |
| Library | Wiaservc.lib |
| DLL | Wiaservc.dll |