Windows Dev Center

Wia object

The Wia object is the entry point for all Windows Image Acquisition (WIA) scripting functionality. Any application that uses the WIA scripting model must create a SafeWia or Wia object. Use that object to enumerate and create devices and to receive notification of hardware events.

Note  This object is not safe for scripting. For a version of this object that is safe for scripting, see SafeWia.
 

Members

The Wia object has these types of members:

Events

The Wia object has these events.

EventDescription
OnDeviceConnected

Event that occurs when a new WIA hardware device is connected.

OnDeviceDisconnected

Event that occurs when a new WIA hardware device is disconnected.

OnTransferComplete

Event that occurs when a data transfer is completed successfully.

 

Methods

The Wia object has these methods.

MethodDescription
Create

The Create method of the Wia object makes a connection to the specified WIA device, and returns an Item object that represents the device.

 

Properties

The Wia object has these properties.

PropertyAccess typeDescription

Devices

Read-only

Collection of DeviceInfo objects that represents all of the devices installed on the computer. Read-only.

Note  This collection is 0-based.
 

 

Requirements

Minimum supported client

Windows 2000 Professional, Windows XP [desktop apps only]

Minimum supported server

Windows Server 2003 [desktop apps only]

DLL

Wiascr.dll (version 4.90 or later)

IID

CLSID_Wia

 

 

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