IEnumWIA_DEV_INFO interface (wia_xp.h)
The IEnumWIA_DEV_INFO interface enumerates the currently available Windows Image Acquisition (WIA) hardware devices and their properties. Device information properties describe the installation and configuration of WIA hardware devices.
Inheritance
The IEnumWIA_DEV_INFO interface inherits from the IUnknown interface. IEnumWIA_DEV_INFO also has these types of members:
Methods
The IEnumWIA_DEV_INFO interface has these methods.
| IEnumWIA_DEV_INFO::Clone The IEnumWIA_DEV_INFO::Clone method creates an additional instance of the IEnumWIA_DEV_INFO interface and sends back a pointer to it. |
| IEnumWIA_DEV_INFO::GetCount The IEnumWIA_DEV_INFO::GetCount method returns the number of elements stored by this enumerator. |
| IEnumWIA_DEV_INFO::Next The IEnumWIA_DEV_INFO::Next method fills an array of pointers to IWiaPropertyStorage interfaces. |
| IEnumWIA_DEV_INFO::Reset The IEnumWIA_DEV_INFO::Reset method is used by applications to restart the enumeration of device information. |
| IEnumWIA_DEV_INFO::Skip The IEnumWIA_DEV_INFO::Skip method skips the specified number of hardware devices during an enumeration of available devices. |
Remarks
The IEnumWIA_DEV_INFO interface is a specific implementation for WIA of the standard OLE enumeration interface. For details, see IEnumXXXX.
Applications obtain a pointer to the IEnumWIA_DEV_INFO interface by invoking the IWiaDevMgr::EnumDeviceInfo method.
The IEnumWIA_DEV_INFO 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 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
Conceptual
Other Resources
Reference
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