IWiaTransferCallback interface

The IWiaTransferCallback interface receives callbacks during a data transfer.

Members

The IWiaTransferCallback interface inherits from the IUnknown interface. IWiaTransferCallback also has these types of members:

Methods

The IWiaTransferCallback interface has these methods.

MethodDescription
GetNextStream

Gets a new stream for the specified item.

TransferCallback

Provides progress and other notifications during a transfer.

 

Remarks

Image processing filter developers should implement this interface and the IWiaImageFilter interface.

The IWiaTransferCallback interface, like all Component Object Model (COM) interfaces, inherits the IUnknown interface methods.

IUnknown MethodsDescription
IUnknown::QueryInterface Returns pointers to supported interfaces.
IUnknown::AddRef Increments reference count.
IUnknown::Release Decrements reference count.

 

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

Wia.h

IDL

Wia.idl

Library

Wiaguid.lib

 

 

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