LogOpenFile - Example Code

The following example verifies that the default file (1) is opened.

  #define INCL_LOGGING
  #include <unidef.h>
  #include <os2.h>
  #include <stdio.h>
  #include <lfdef.h>
  #define ERROR_LOG_FILE_ID 1

  {
  APIRET rc;                      /* return code */
  ULONG service;
  UniChar filename¢256!;
  ULONG filename_length;
  ULONG log_file_ID;
  LOFREQUEST open_file_packet;

  service = ERROR_LOGGING_SERVICE;

  /* Construct the LogOpenFile parameter packet  */
  open_file_packet.packet_size = sizeof(LOFREQUEST);
  open_file_packet.packet_revision_number = LF_UNI_API;
  log_file_ID = ERROR_LOG_FILE_ID;
  open_file_packet.log_file_ID = &log_file_ID;
  open_file_packet.filename_length = &filename_length; /*Indicates use the
                                                               Log File ID   */
  open_file_packet.filename = &filename;

  rc = LogOpenFile(service,                       /* service */
              &open_file_packet)              /* parameter packet  */

  if (rc |= 0)
    {
     printf("LogOpenFile error: return code = %d",rc);
     return;
    }