Device object

The Device Object represents the current device instance and is the entry point into WPD Automation. The Device Object provides access and enumeration of device services and storages as well as access to device specific properties, events, and services.

A Device Object is created through the following property of a scripting host.


var deviceObject = window.external;

Note  A Device Object is functional only while the physical device that it represents is connected. Any operations performed on a Device Object after the physical device is disconnected will return an error and raise a DISP_E_EXCEPTION exception, with pExcepInfo filled out.

Members

The Device object has these types of members:

Events

The Device object has these events.

EventDescription
onDeviceReset

Occurs when the device is about to reset.

onDeviceUpdated

Occurs when the device has been updated, as when a device property has been changed.

 

Methods

The Device object has these methods.

MethodDescription
GetServicesByType

Returns a collection of services for the specified service type.

 

Properties

The Device object has these properties.

PropertyAccess typeDescription

Services

Read-only

Provides read-only access to a collection of all the services on the device.

Storages

Read-only

Provides read-only access to a collection of all the legacy storages on the device.

WpdProperty

Read/write

Gets or sets the value of a device-specific property.

 

Requirements

Minimum supported client

Windows 7 [desktop apps only]

Minimum supported server

Windows Server 2008 R2 [desktop apps only]

See also

About the Device Object
Service Object
Storage Object
WPD Automation Reference
WPDObject

 

 

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