Description:

This function allows applications to unregister for notification of events about printers. This function should be used when an application no longer wants certain alerts, in order to limit the network traffic.

#define INCL_SPL
#define INCL_SPLBIDI
#include <os2.h>

PSZ      pszComputerName;  /*  Printer server name to unregister for alert notification. */
PSZ      pszName;          /*  Case-sensitive name of printer port to unregister for alerts. */
ULONG    ulHandle;         /*  Spooler alert handle previously allocated by SplRegister. */
ULONG    ulCategory;       /*  Category of alert to unregister. */
ULONG    ulType;           /*  Type of alert to unregister for the given category. */
ULONG    rc;               /*  Return codes. */

rc = SplUnRegister(pszComputerName, pszName,
       ulHandle, ulCategory, ulType);