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The IWiaTransfer interface provides stream-based transfer of data.
Members
The IWiaTransfer interface inherits from the IUnknown interface. IWiaTransfer also has these types of members:
Methods
The IWiaTransfer interface has these methods.
| Method | Description |
|---|---|
| Cancel | Cancels the current transfer operation. |
| Download | Initiates a data download to the caller. |
| EnumWIA_FORMAT_INFO | Creates an enumerator for the transfer formats that the WIA 2.0 device supports. |
| Upload | Initiates a data upload of a single item from the caller. |
Remarks
The IWiaTransfer 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 |
|