Perl in a Nutshell, 2nd Edition

Name

Read

Synopsis

$log->Read(flags, offset, \%eventinfo)

Reads an entry from the event log and returns the information in the eventinfo hash. offset specifies the record number you want to start at in the log. flags sets options for how you want to read the log, which can be any combination of the following:

EVENTLOG_FORWARDS_READ

Eventlog is read in forward chronological order.

EVENTLOG_BACKWARDS_READ

Eventlog is read in reverse chronological order.

EVENTLOG_SEEK_READ

The read begins at the record specified by the $RecordOffset parameter. Must also specify EVENT_LOG_FORWARDS_READ or EVENTLOG_BACKWARDS_READ.

EVENTLOG_SEQUENTIAL_READ

The read continues sequentially from the last read call.

The final argument is the output object for the event read. eventinfo is a reference to a hash that contains keys for each part of the event description. This same structure is used when you report new events to the event log using the Report method. The eventinfo hash looks like this:

%event = (
    EventID             => val,
    EventType           => val,
    Category            => val,
    ClosingRecordNumber => val,
    Source              => val,
    Computer            => val,
    Strings             => val,
    Data                => val,
);