## Presentation Device Driver Reference for OS/2

[prev][next][parent][TOC]

### Parameters

ulAlertHandle (ULONG) - input

Indicates the alert handle returned by SplRegister.

pInData (PVOID) - input

Contains the value from ulAlertHandle.

pOutData (PVOID) - output

Receives a PRTSETALERT data structure, followed by the extended alert data.

The PRTSETALERT data structure is followed by the extended alert data. The format of this extended alert data is dependent on the protocol converter.

Only applications that know the protocol converter's convention for returned extended alert information can use the BIDI_READ_ALERT(801Dh) command structure. An application must first register for an extended alert using SplRegister, and the application must have been posted a message indicating that an extended alert was received from the printer. Only then can the application issue a BIDI_READ_ALERT.