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WiaTransferParams structure

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The WiaTransferParams is transmitted to an application during a data transfer by the Windows Image Acquisition (WIA) run-time system to the IWiaTransferCallback::TransferCallback method.

Syntax

typedef struct _WiaTransferParams {
  LONG    lMessage;
  LONG    lPercentComplete;
  ULONG64 ulTransferredBytes;
  HRESULT hrErrorStatus;
} WiaTransferParams;

Members

lMessage

Type: LONG

Indicates the status of the data transfer.

WIA_TRANSFER_MSG_STATUS

WIA_TRANSFER_MSG_END_OF_STREAM

WIA_TRANSFER_MSG_END_OF_TRANSFER

WIA_TRANSFER_MSG_DEVICE_STATUS

WIA_TRANSFER_MSG_NEW_PAGE

lPercentComplete

Type: LONG

Indicates the progress of the data transfer as a percentage.

ulTransferredBytes

Type: ULONG64

Indicates the amount of data transferred.

hrErrorStatus

Type: HRESULT

The status, or error state, of the device set by the driver; for example, "warming up".

Requirements

Requirement Value
Minimum supported client
 Windows Vista [desktop apps only]
Minimum supported server
 Windows Server 2008 [desktop apps only]
Header
Wia.h