LogWaitEvent - Example Code

The following example waits for an event notification from the Error Logging service. The call will wait indefinitely for an event notification.

  #define INCL_LOGGING
  #include <unidef.h>
  #include <os2.h>
  #include <stdio.h>
  #include <lfdef.h>

  {
  APIRET rc;              /* return code */
  ULONG service;
  LWEREQUEST log_wait_event_packet;
  HLOGNOTIFY log_notify;
  EVENTKEY EventKey;
  BYTE log_entry_buffer¢4096!;
  UniChar pathname¢512!;
  ULONG pathname_length = sizeof(pathname);


  service =  ERROR_LOGGING_SERVICE;

  /* Construct the LogChangeEventFilter parameter packet  */
  log_wait_event_packet.packet_size = sizeof(LWEREQUEST);
  log_wait_event_packet.packet_revision_number = LF_UNI_API;
  log_wait_event_packet.LogNotify = log_notify;
  log_wait_event_packet.pEventKey = &EventKey;
  log_wait_event_packet.pLogEntryBuffer = &log_entry_buffer;
  log_wait_event_packet.timeout = 0;
  log_wait_event_packet.queue_flags = 0;
  log_wait_event_packet.pathname_length = &pathname_length;
  log_wait_event_packet.pathname = pathname;

  rc = LogWaitEvent(service,                      /* service */
                   &log_wait_event_packet)        /* parameter packet */
  if (rc |= 0)
    {
     printf("LogWaitEvent error: return code = %d",rc);
     return;
    }