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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 |
|
| IDL |
|
| Library |
|