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IWiaDevMgr interface (wia_xp.h)

  • Article

Applications use the IWiaDevMgr interface to create and manage image acquisition devices. They also use it to register to receive device events.

Note  For Windows Vista applications, use IWiaDevMgr2 instead of IWiaDevMgr.
 

Inheritance

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

Methods

The IWiaDevMgr interface has these methods.

 
IWiaDevMgr::AddDeviceDlg

This method is not implemented. (IWiaDevMgr.AddDeviceDlg)
IWiaDevMgr::CreateDevice

The IWiaDevMgr::CreateDevice creates a hierarchical tree of IWiaItem objects for a Windows Image Acquisition (WIA) device.
IWiaDevMgr::EnumDeviceInfo

Applications use the IWiaDevMgr::EnumDeviceInfo method to enumerate property information for each available Windows Image Acquisition (WIA) device.
IWiaDevMgr::GetImageDlg

The IWiaDevMgr::GetImageDlg method displays one or more dialog boxes that enable a user to acquire an image from a Windows Image Acquisition (WIA) device and write the image to a specified file.
IWiaDevMgr::RegisterEventCallbackCLSID

The IWiaDevMgr::RegisterEventCallbackCLSID method registers an application to receive events even if the application may not be running.
IWiaDevMgr::RegisterEventCallbackInterface

The IWiaDevMgr::RegisterEventCallbackInterface method registers a running application Windows Image Acquisition (WIA) event notification.
IWiaDevMgr::RegisterEventCallbackProgram

The IWiaDevMgr::RegisterEventCallbackProgram method registers an application to receive device events. It is primarily provided for backward compatibility with applications that were not written for WIA.
IWiaDevMgr::SelectDeviceDlg

The IWiaDevMgr::SelectDeviceDlg displays a dialog box that enables the user to select a hardware device for image acquisition.
IWiaDevMgr::SelectDeviceDlgID

The IWiaDevMgr::SelectDeviceDlgID method displays a dialog box that enables the user to select a hardware device for image acquisition.

Remarks

The IWiaDevMgr 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)