This value is returned by the WIA service to the WIA minidriver when the IStiDeviceControl::GetMyDevicePortName call is made during the IStiUSD::Initialize method.Ī WIA minidriver for a web service scanner that is using WSDScan.sys has its CreateFileName value initialized when the device is installed.
The device property is written to a device key that is created in the registry for the imaging device that is being installed and to the CreateFileName WIA registry value (which is described in INF Files for WIA Devices). During IRP_MN_START_DEVICE, WSDScan.sys reads the PKEY_PNPX_ID device property and saves it to the registry. To install a WIA scanner driver with WSD, you should use the WSDScan.sys kernel-mode driver.
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