IEnumWIA_FORMAT_INFO interface (wia_xp.h)
Use the IEnumWIA_FORMAT_INFO interface to enumerate the format and media type information for a device.
Inheritance
The IEnumWIA_FORMAT_INFO interface inherits from the IUnknown interface. IEnumWIA_FORMAT_INFO also has these types of members:
Methods
The IEnumWIA_FORMAT_INFO interface has these methods.
| IEnumWIA_FORMAT_INFO::Clone The IEnumWIA_FORMAT_INFO::Clone method creates an additional instance of the IEnumWIA_FORMAT_INFO interface and returns an interface pointer to the new interface. |
| IEnumWIA_FORMAT_INFO::GetCount The IEnumWIA_FORMAT_INFO::GetCount method returns the number of elements stored by this enumerator. |
| IEnumWIA_FORMAT_INFO::Next The IEnumWIA_FORMAT_INFO::Next method returns an array of WIA_FORMAT_INFO structures. |
| IEnumWIA_FORMAT_INFO::Reset The IEnumWIA_FORMAT_INFO::Reset method sets the enumeration back to the first WIA_FORMAT_INFO structure. |
| IEnumWIA_FORMAT_INFO::Skip The IEnumWIA_FORMAT_INFO::Skip method skips the specified number of structures in the enumeration. |
Remarks
The IEnumWIA_FORMAT_INFO interface is a specific implementation for Windows Image Acquisition (WIA) of the standard Component Object Model (COM) enumeration interface. For details, see IEnumXXXX.
Applications obtain a pointer to the IEnumWIA_FORMAT_INFO interface by invoking the IWiaDataTransfer::idtEnumWIA_FORMAT_INFO method of an item's IWiaDataTransfer interface.
The IEnumWIA_FORMAT_INFO interface, like all 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 2000 Professional, Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | wia_xp.h (include Wia.h) |
See also
Other Resources
Reference