IWiaDevMgr2 interface

The IWiaDevMgr2 interface is used to create and manage image acquisition devices and to register to receive device events.

Members

The IWiaDevMgr2 interface inherits from the IUnknown interface. IWiaDevMgr2 also has these types of members:

The IWiaDevMgr2 interface has these methods.

Method	Description
CreateDevice	Creates a hierarchical tree of IWiaItem2 objects for a WIA 2.0 device.
EnumDeviceInfo	Creates an enumerator of property information for each available WIA 2.0 device.
GetImageDlg	The IWiaDevMgr2::GetImageDlg method displays one or more dialog boxes that enable a user to acquire an image from a WIA 2.0 device and write the image to a specified file. This method extends the functionality of IWiaDevMgr2::SelectDeviceDlg to encapsulate image acquisition within a single API call.
RegisterEventCallbackCLSID	The IWiaDevMgr2::RegisterEventCallbackCLSID method registers an application to receive events even if the application is not running.
RegisterEventCallbackInterface	Registers a running application for WIA 2.0 event notification.
RegisterEventCallbackProgram	The IWiaDevMgr2::RegisterEventCallbackProgram method registers an application to receive device events. It is primarily provided for backward compatibility with applications that were not written for WIA 2.0.
SelectDeviceDlg	Displays a dialog box that enables the user to select a hardware device for image acquisition.
SelectDeviceDlgID	Displays a dialog box that enables the user to select a hardware device for image acquisition.

The IWiaDevMgr2 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.

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