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.

Method Description
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 Methods Description
IUnknown::QueryInterface Returns pointers to supported interfaces.
IUnknown::AddRef Increments reference count.
IUnknown::Release Decrements reference count.

 

Requirements

Requirement Value
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