IWiaMiniDrv::drvNotifyPnpEvent method (wiamindr_lh.h)
The IWiaMiniDrv::drvNotifyPnpEvent method responds to the event received from the WIA service.
Syntax
HRESULT drvNotifyPnpEvent(
[in] const GUID *pEventGUID,
[in] BSTR bstrDeviceID,
[in] ULONG ulReserved
);
Parameters
[in] pEventGUID
Points to a GUID identifying the event.
[in] bstrDeviceID
Specifies a string containing the device's unique identifier.
[in] ulReserved
Reserved.
Return value
On success, the method should return S_OK. If the method fails, it should return a standard COM error code.
Remarks
The WIA service notifies a WIA minidriver of a supported device event by calling the IWiaMiniDrv::drvNotifyPnpEvent method. In this method the minidriver implements the device-specific functionality needed to respond to the event.
If this method is called with *pEventGuid set to WIA_EVENT_CANCEL_IO device event, it should cancel all current I/O operations as soon as possible.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Desktop |
| Header | wiamindr_lh.h (include Wiamindr.h) |